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Seagate Technology Llc patents (2015 archive)


Recent patent applications related to Seagate Technology Llc. Seagate Technology Llc is listed as an Agent/Assignee. Note: Seagate Technology Llc may have other listings under different names/spellings. We're not affiliated with Seagate Technology Llc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "S" | Seagate Technology Llc-related inventors


12/31/15 / #20150380040

Near-field transducer efficiency monitoring system

A system may have a data storage medium that contains at least one data bit that is accessed by a transducing head that has a near-field transducer. A controller can be connected to the transducing head and store a plurality of near-field transducer operating currents in a memory. ... Seagate Technology Llc

12/31/15 / #20150380021

Asperity and head-media contact detection using multi-stage temperature coefficient of resistance sensor

A multi-stage sensor is situated on the head transducer and configured to interact with a magnetic recording medium. A first sensor stage of the multi-stage sensor has a temperature coefficient of resistance. ... Seagate Technology Llc

12/31/15 / #20150380020

Devices including at least one adhesion layer and methods of forming adhesion layers

A device that includes a near field transducer (nft), the nft having a disc and a peg, and the peg having an air bearing surface thereof; and at least one adhesion layer positioned on at least the air bearing surface of the peg, the adhesion layer including one or more of platinum (pt), iridium (ir), ruthenium (ru), rhodium (rh), palladium (pd), yttrium (y), chromium (cr), nickel (ni), and scandium (sc).. . ... Seagate Technology Llc

12/31/15 / #20150380019

Magnetic stack including cooling element

Various embodiments of a magnetic stack are disclosed. In one or more embodiments, the magnetic stack includes first and second shield layers, and a magnetically responsive lamination disposed between the first and second shield layers. ... Seagate Technology Llc

12/31/15 / #20150378890

Multi-dimentional data randomization

The disclosed technology provides for multi-dimensional data randomization in a memory cell array using circular shifts of an initial scrambling sequence. Data addressed to a first row of a data array is randomized using the initial scrambling sequence and data addressed to each row of the memory cell array is randomized using a scrambling sequence that is equal to a circular shift of the initial sequence.. ... Seagate Technology Llc

12/31/15 / #20150378642

File system back-up for multiple storage medium device

A device may comprise a first data storage medium, a second data storage medium, and a controller. The controller may be configured to store file system information to the first data storage medium, storing a copy of file system information for the first data storage medium to the second data storage medium as a backup, loading the file system information from the first data storage medium to a cache memory when the file system information in the first data storage medium contains valid data, and loading the copy of the file system information from the second data storage medium to the cache when the file system information in the first data storage medium does not contain valid data.. ... Seagate Technology Llc

12/31/15 / #20150378607

Data updating in non-volatile memory

Various embodiments of the present invention are generally directed to an apparatus and associated method for updating data in a non-volatile memory array. In accordance with some embodiments, a memory block is formed with a plurality of types of memory cell sectors arranged in data pages of a first type and log pages of a second type that can be updated in-place. ... Seagate Technology Llc

12/24/15 / #20150371670

Dual reader structure

Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack separated by a top mid-shield and a bottom mid-shield, and a pre-amplifier circuit comprising a top lead connected to the top mid-shield, configured to collect current flowing from the top mid-shield through the top sensor stack opposite a direction of current flowing from the bottom mid-shield to a bottom lead through the bottom sensor stack.. . ... Seagate Technology Llc

12/24/15 / #20150371669

Method of making a transducer head

A method of making a transducer head disclosed herein includes depositing a spacer layer on an nft layer of the transducer head, forming an etch stop layer on a spacer layer of a transducer, depositing a cladding layer on the etch stop layer, and milling the cladding layer at a sloped angle such that the milling stops at the etch stop layer.. . ... Seagate Technology Llc

12/24/15 / #20150371668

Write head having beveled non-magnetic write gap seed layer

An apparatus has a main pole layer of magnetic material, a second layer of magnetic material, a first gap layer of non-magnetic material between the main pole layer and the second layer of magnetic material, and a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material. The second gap layer of non-magnetic material can be directly adjacent to the second layer of magnetic material. ... Seagate Technology Llc

12/24/15 / #20150371667

Light source alignment

Implementations disclosed herein provide a method comprising emitting light at a plurality of locations across a surface of a recording head, detecting light output from a diffraction grating axis with a detector, and determining a target position for mounting a light source on the surface of the recording head by analyzing the detected light output corresponding to one or more of the plurality of locations.. . ... Seagate Technology Llc

12/24/15 / #20150370631

Write mapping to mitigate hard errors via soft-decision decoding

An apparatus having mapping and interface circuits. The mapping circuit (i) generates a coded item by mapping write unit bits using a modulation or recursion of past-seen bits, and (ii) calculates a particular state to program into a nonvolatile memory cell. ... Seagate Technology Llc

12/24/15 / #20150369879

Magnetic sensor annealing using a rocking field

Implementations described and claimed herein provide a system comprising an external magnetic field generator, wherein the external field magnetic field generator is configured to rock an effective annealing magnetic field between a first positive angle and a second negative angle compared to a desired pinning field orientation in an afm/pl structure.. . ... Seagate Technology Llc

12/17/15 / #20150364899

Bragg grating external cavity laser

A bragg grating external cavity laser apparatus may comprise the combination of a slider and an external cavity laser. The slider includes a waveguide that delivers light to a recording media. ... Seagate Technology Llc

12/17/15 / #20150364156

Current-based environment determination

Provided is an apparatus including a motor configured to rotate a rotating member at a rotational speed based on an applied current; and a controller configured to modify one or more operating parameters in response to determining whether a change in an environment has occurred based on the applied current.. . ... Seagate Technology Llc

12/17/15 / #20150364152

Laser optical power monitoring using thermal sensor of a head transducer

A light source is configured to produce light, a waveguide is optically coupled to the light source and configured to direct the light to an intended focus location, and a slider is configured to use the light as an energy source for heating a region of a magnetic recording medium. A thermal sensor is situated on the slider at a location outside of a light path that includes the intended focus location. ... Seagate Technology Llc

12/17/15 / #20150364149

Enlarged substrate for magnetic recording medium

An enlarged substrate for a magnetic recording medium used in a data storage device such as a hard disc drive (hdd). In some embodiments, an apparatus includes a substrate for a magnetic recording disc for installation in a 3- 1/2 inch form factor hard disc drive, the substrate having an overall diameter of nominally from 96.9 mm to 100.4 mm. ... Seagate Technology Llc

12/17/15 / #20150364148

Writer core incorporating thermal sensor having a temperature coefficient of resistance

A writer core of a transducer is configured to interact with a magnetic recording medium and comprises an upper core and a lower core. At least one of the upper and lower cores comprises a return pole having a return shield. ... Seagate Technology Llc

12/17/15 / #20150363288

Redundancies for reconstruction in mass data storage systems

A mass data storage system includes a redundancy manager that uses a physical position map to select a subset of storage resources having a physical distribution satisfying at least one resource distribution rule. The physical position map identifies physical positions of storage resources relative to a number of power supply units. ... Seagate Technology Llc

12/17/15 / #20150363127

Extended file attributes for redundant data storage

A mass data storage system includes a data manager that selects a subset of storage resources for storage of a data file and generates location metadata for the data file defining positions of each storage resource in the selected subset of storage resources. According to one implementation, the data manager further defines an extended file attribute associated with the location metadata.. ... Seagate Technology Llc

12/17/15 / #20150363126

Logical zone mapping

A mass data storage system includes a plurality of communicatively coupled storage resources that are each controlled by one of a plurality of distinct storage controllers. Each of the storage resources are mapped to one or more logical zones, and the logical zones each apply an associated storage condition to data stored therein.. ... Seagate Technology Llc

12/17/15 / #20150363111

Storage device controller

Provided is an apparatus including a first storage device having a first write speed and a second storage device having a second write speed. The apparatus also includes a controller configured to manage a transfer of data to the first storage device or the second storage device. ... Seagate Technology Llc

12/17/15 / #20150363109

Controller interface for operation of multiple storage drives

A mass data storage system includes a number of communicatively coupled storage drives powered by one or more power supplies. Shared control electronics selectively connect power and a data signal to a select storage drive via instructions within a control signal received by the common controller. ... Seagate Technology Llc

12/17/15 / #20150362983

Selective storage resource powering for data transfer management

A mass data storage system includes a plurality of communicatively coupled storage resources arranged within a power grid. Responsive to receipt of a data transfer request, a compute node of the mass data storage system selectively powers from an off state one or more of the storage resources to receive incoming data or act as a data source for a read operation.. ... Seagate Technology Llc

12/17/15 / #20150362972

Power characteristics in a system of disparate storage drives

A mass data storage system includes a plurality of communicatively coupled storage drives powered by one or more power supplies. A power map defines the relationships between the storage drives and the power supplies and power rules/policies define the maximum permissible power load on each power supply at any point in time.. ... Seagate Technology Llc

12/17/15 / #20150362968

Common controller operating multiple storage drives

A mass data storage system includes a number of communicatively coupled storage drives powered by one or more power supplies. A common controller selectively connects power and a data signal to a desired storage drive via instructions within a control signal received by the common controller. ... Seagate Technology Llc

12/10/15 / #20150356989

Hybrid-guided block copolymer assembly

A method for nano-patterning includes imprinting features in a resist with an imprint mold to form one or more topographic surface patterns on the imprinted resist. A block copolymer (“bcp”) material is deposited on the imprinted resist, wherein a molecular dimension l0 of the bcp material correlates by an integer multiple to a spacing dimension of the one or more topographic surface patterns on the imprinted resist. ... Seagate Technology Llc

12/10/15 / #20150356988

Processing servo data from two or more read transducers co-located on a slider

Two or more signals are read from two or more respective tracks of a disk drive recording medium using respective two or more read transducers co-located on a slider. The slider is aligned to the two or more tracks in response to the correlation between the two or more signals.. ... Seagate Technology Llc

12/10/15 / #20150355838

Estimating read reference voltage based on disparity and derivative metrics

An adaptive channel tracking algorithm performed by a flash memory system obtains disparity metrics and derivative metrics and uses a combination of the disparity and derivative metrics to estimate an optimal read reference voltage. The estimation of the optimal read reference voltage does not rely on assumptions about the underlying cell voltage distributions and results in a good estimate of the read reference voltage even if the standard deviations of the cell voltage distributions are different. ... Seagate Technology Llc

12/03/15 / #20150348753

Methods of forming layers

A method of forming a layer, the method including providing a substrate having at least one surface adapted for deposition thereon; providing a precursor ion beam, the precursor ion beam including ions; neutralizing at least a portion of the ions of the precursor ion beam to form a neutral particle beam, the neutral particle beam including neutral particles; and directing the neutral particle beam towards the surface of the substrate, wherein both the ions and the neutral particles have implant energies of not greater than 100 ev, and the neutral particles of the particle beam form a layer on the substrate.. . ... Seagate Technology Llc

12/03/15 / #20150348578

Creating a sub-micron pattern proximate a near-field transducer using in-slider waveguide and laser

An air-bearing surface of a slider is coated with a photoresist having a high optical absorbance at or near an operational wavelength of the slider. Light is directed at a target wavelength through an entry of a waveguide integrated into the slider. ... Seagate Technology Llc

11/26/15 / #20150341171

Virtual bands concentration for self encrypting drives

An apparatus includes a storage medium with an opaque key storage and a controller. The controller may be coupled to the storage medium. ... Seagate Technology Llc

11/26/15 / #20150340100

Flash command that reports a count of cell program failures

An apparatus comprising a memory and a controller. The memory may be configured to process a plurality of read/program operations. ... Seagate Technology Llc

11/26/15 / #20150340053

Heat assisted media recording apparatus with laser diode mode hopping suppression

An apparatus includes a slider body, a laser diode, an optical path, and a heating element. The laser diode is configured to produce energy and is subject to temperature changes as a result of producing energy. ... Seagate Technology Llc

11/26/15 / #20150340052

Devices including a near field transducer and at least one associated adhesion layer

Devices that include a near field transducer (nft), the nft having a disc and a peg, and the peg having five surfaces thereof; and at least one adhesion layer positioned on at least one of the five surfaces of the peg, the adhesion layer including one or more of the following: yttrium (y), tin (sn), iron (fe), copper (cu), carbon (c), holmium (ho), gallium (ga), silver (ag), ytterbium (yb), chromium (cr), tantalum (ta), iridium (ir), zirconium (zr), yttrium (y), scandium (sc), cobalt (co), silicon (si), nickel (ni), molybdenum (mo), niobium (nb), palladium (pd), titanium (ti), rhenium (re), osmium (os), platinum (pt), aluminum (al), ruthenium (ru), rhodium (rh), vanadium (v), germanium (ge), tin (sn), magnesium (mg), iron (fe), copper (cu), tungsten (w), hafnium (hf), carbon (c), boron (b), holmium (ho), antimony (sb), gallium (ga), manganese (mn), silver (ag), indium (in), bismuth (bi), zinc (zn), ytterbium (yb), and combinations thereof.. . ... Seagate Technology Llc

11/26/15 / #20150340051

Laser array for heat assisted magnetic recording

An apparatus comprises a unitary laser diode comprising an array of two or more active regions, at least one of which outputs a light beam in response to an input current. The apparatus also includes two or more waveguides, each waveguide corresponding to an active region of the array. ... Seagate Technology Llc

11/26/15 / #20150340050

Near-field transducer peg encapsulation

A near field transducer with a peg region, an enlarged region disposed adjacent the peg region, and a barrier material disposed between the peg region and the enlarged region. The barrier material reduces or eliminates interdiffusion of material between the peg region and the enlarged region.. ... Seagate Technology Llc

11/26/15 / #20150339066

Non-volatile complement data cache

The disclosed systems include features to mitigate a risk of data corruption attributable to unexpected power loss events. In particular, the disclosed system identifies and retrieves complement data associated with each received write command and stores the complement data in a non-volatile cache while the complement data is overwritten via execution of the write command.. ... Seagate Technology Llc

11/19/15 / #20150333776

Decoding based on randomized hard decisions

An apparatus having a memory and a controller is disclosed. The memory is configured to store a codeword. ... Seagate Technology Llc

11/19/15 / #20150333476

Solderable pad fabrication for microelectronic components

Two microelectronic components can be attached by flowing solder between solderable pads patterned on interfacing surfaces. According to one implementation, the microelectronic components can include the solderable pads patterned onto first respective surfaces and other surface features patterned onto second respective surfaces. ... Seagate Technology Llc

11/19/15 / #20150332733

Apparatus with sealed cavity

Certain exemplary aspects of the present disclosure are directed towards an apparatus in which a base deck and a forged base deck cover are coupled to one another, via a weld joint, to provide a hermetically sealed cavity within. The base deck includes an outer region, and the base deck cover includes a lip that interfaces with the outer region of the base deck to provide the weld joint. ... Seagate Technology Llc

11/19/15 / #20150332725

Controlling laser output in a hamr device

A method of controlling laser output in a heat assisted magnetic recording device can be performed by control circuitry in a data storage device. The method includes measuring a temperature, measuring laser output power of a laser, determining a power error by subtracting an optimal laser output power from the measured laser output power and comparing the power error to at least one threshold to determine whether an applied current to the laser needs to be adjusted. ... Seagate Technology Llc

11/19/15 / #20150332721

Stack including a magnetic zero layer

A stack including a crystallographic orientation interlayer, a magnetic zero layer disposed on the interlayer, and a magnetic recording layer disposed on the magnetic zero layer is disclosed. The magnetic zero layer is non-magnetic or has a saturation magnetic flux density (bs) less than about 100 emu/cc. ... Seagate Technology Llc

11/19/15 / #20150332719

Servo tracking using a single servo writing pass per track for multi sensors

At least a portion of a first servo mark is read using a first read head during a rotation of a disk, the rotation comprising no more than 360 degrees. At least a portion of a second servo mark is read using a second read head during the rotation of the disk. ... Seagate Technology Llc

11/19/15 / #20150332716

Assemblies and methods for slider electrical connection containing through circuit electrical connections

Assemblies and methods that include a flex circuit having a slider facing surface and an opposing back surface; a slider having a back surface and an opposing air bearing surface (abs), the slider including an electrical connection region; and a through circuit electrical connection, that is in electrical connection with the electrical connection region of the slider, the back surface of the slider interfacing with the slider facing surface of the flex circuit.. . ... Seagate Technology Llc

11/19/15 / #20150332714

Magnetoresistive sensor

Implementations disclosed herein allow a signal detected by a magnetoresistive (mr) sensor to be improved by providing for one or more alloyed layers that each includes a ferromagnetic material and a refractory material. The alloyed layers are provided adjacent to a shield element or between soft magnetic layers of the sensor stack.. ... Seagate Technology Llc

11/19/15 / #20150332713

Increased stability magnetic shield

A data storage device may be configured at least with a magnetic stack that contacts a magnetic shield. The magnetic stack can be disposed between first and second side shields and having at least one layer constructed of a cofenib material. ... Seagate Technology Llc

11/19/15 / #20150332710

Crystalline magnetic layer to amorphous substrate bonding

Various methods for attaching a crystalline write pole onto an amorphous substrate and the resulting structures are described in detail herein. Further, the resulting structure may have a magnetic moment exceeding 2.4 tesla. ... Seagate Technology Llc

11/19/15 / #20150332709

Magnetic devices including film structures

A device including a magnetic structure, the magnetic structure having a substrate adjacent surface and a second, opposing surface, the magnetic structure having a near field transducer (nft), wherein the nft includes gold or an alloy thereof, and is positioned at the second surface an overcoat structure; and a film structure, the film structure positioned between the magnetic structure and the overcoat structure, the film structure having a total thickness of not greater than about 100 Å, and the film structure including: a first interfacial structure having a first and a second opposing surface; a second interfacial structure having a first and a second opposing surface; and an intermediate structure wherein the first surface of the first interfacial structure is positioned adjacent the nft of the magnetic structure, and the second surface of the second interfacial structure is positioned adjacent the overcoat structure, and the intermediate structure is positioned between the first interfacial structure and the second interfacial structure, and wherein the first interfacial structure includes one or more rare earth elements, one or more alkaline earth metals, one or more alkali metals, or a combination thereof.. . ... Seagate Technology Llc

11/19/15 / #20150331613

Media write operation

A method or system comprises determining an end data track of a write operation in response to a request for the write operation in a media storage device, saving data from an adjacent track following the end data track to a cache, performing the write operation. In one implementation, performing the write operation is comprises writing data to a plurality of data tracks in a band.. ... Seagate Technology Llc

11/19/15 / #20150330453

Fluid seal for a rotating assembly

A fluid seal for sealing a gap region for rolling elements rotationally connecting a shaft and an outer structure of a rotating assembly. In embodiments described, the fluid seal includes an inner capillary seal and an outer capillary seal radially and axially spaced from the inner capillary seal. ... Seagate Technology Llc

11/12/15 / #20150326245

Storage of a matrix on a storage compute device

A compressed format is selected for storage of a matrix based on a computation to be performed using the matrix and architecture of a storage compute device to which the matrix is stored. Data of the matrix is stored on the storage compute device according to the compressed format. ... Seagate Technology Llc

11/12/15 / #20150325263

Slider and/or hard disc including coating, and optionally one or more additives that can dissipate electrical charge

The present disclosure relates to reducing a potential difference among a slider body and a hard disc drive platter by providing a hard disc drive platter and/or slider body with a coating that includes one or more additives that can dissipate electrical charge.. . ... Seagate Technology Llc

11/12/15 / #20150325261

Optical reflectors for use with a near-field transducer

An apparatus is includes a near field transducer positioned adjacent a media-facing surface and at the end of a waveguide having at least one core layer and a cladding layer. The apparatus also includes at least one optical reflector positioned adjacent opposing cross-track edges of the near field transducer and/or adjacent a down-track side of the near-field transducer.. ... Seagate Technology Llc

11/12/15 / #20150325260

Sensor stack structure

A reader stack, such as for a magnetic storage device, the stack having a top synthetic antiferromagnetic (saf) layer, a magnetic capping layer adjacent to the top saf layer, an rkky coupling layer adjacent to the magnetic capping layer opposite the top saf layer, and a free layer adjacent to the rkky coupling layer opposite the magnetic capping layer. Also included is a method for biasing a free layer in a reader stack by providing an exchange coupling between the free layer and a top synthetic antiferromagnetic (saf) layer using a layer having rkky coupling property positioned between the free layer and the top saf layer and a magnetic capping layer between the saf layer and the layer having rkky coupling property.. ... Seagate Technology Llc

11/12/15 / #20150324691

Neural network connections using nonvolatile memory devices

A system includes a plurality of nonvolatile memory cells and a map that assigns connections between nodes of a neural network to the memory cells. Memory devices containing nonvolatile memory cells and applicable circuitry for reading and writing may operate with the map. ... Seagate Technology Llc

11/12/15 / #20150324685

Adaptive configuration of a neural network device

A first input is processed via a first configuration of a neural network to produce a first output. The first configuration defines attributes of the neural network, such as connections between neural elements of the neural network. ... Seagate Technology Llc

11/12/15 / #20150324314

Storage device with expansion slot

Provided is an apparatus including a first storage device. The apparatus also includes an expansion slot configured to receive a removable card with a second storage device. ... Seagate Technology Llc

11/12/15 / #20150324304

Techniques for secure storage hijacking protection

Various embodiments of the present disclosure are directed to a storage device having a non-volatile memory, a proof of physical access (ppa) mechanism and a controller circuit. The ppa mechanism generates a ppa value responsive to a direct physical user interaction with the storage device by a user. ... Seagate Technology Llc

11/12/15 / #20150324125

Storage compute device with tiered memory processing

A data object is received at a storage compute device in response to a request from a host. A requirement of the data object is determined based on a computation to be performed on the data object. ... Seagate Technology Llc

11/05/15 / #20150318004

Bottom shield stabilized magnetic seed layer

A data reader generally capable of sensing data bits may be configured at least with a magnetic stack that has free and fixed magnetization structures atop a magnetic seed layer. A bottom shield may be positioned contactingly adjacent the magnetic stack opposite a top shield with the bottom shield having a fixed pinning magnetization set to a predetermined magnetic orientation.. ... Seagate Technology Llc

11/05/15 / #20150318003

Methods of forming portions of near field transducers (nfts) and articles formed thereby

Methods that include forming at least a portion of a near field transducer (nft) structure; depositing a material onto at least one surface of the portion of the nft to form a metal containing layer; and subjecting the metal containing layer to conditions that cause diffusion of at least a portion of the material into the at least one surface of the portion of the nft; and devices formed thereby.. . ... Seagate Technology Llc

11/05/15 / #20150316100

Fluid dynamic bearing motors with different width pump seals and journal bearings

In certain embodiments, a motor includes a shaft positioned adjacent a sleeve for relative rotation. The sleeve includes a first radial recirculation channel. ... Seagate Technology Llc

10/29/15 / #20150311430

Magnetoresistive sensor

Implementations disclosed herein provide a magnetoresistive (mr) sensor including a free layer comprising a first layer of cofeb or cofe/cofeb and a second layer made of an alloyed layer including a ferromagnetic material and a refractory material. An implementation of the mr sensor further includes a cap layer adjacent to the second layer wherein the cap layer does not include any tantalum.. ... Seagate Technology Llc

10/29/15 / #20150310938

Temperature tracking to manage threshold voltages in a memory

Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with various embodiments, a first data access operation is conducted on a memory cell and a first temperature associated with the memory cell and associated with the first data access operation is measured. ... Seagate Technology Llc

10/29/15 / #20150310937

Methods and systems including at least two types of non-volatile cells

Methods and systems that include receiving data to be written to a nand array in a controller; and writing the data to the nand array, the nand array including both type a nand cells and type b nand cells, wherein the type a nand cells and the type b nand cells have at least one structural difference.. . ... Seagate Technology Llc

10/29/15 / #20150310892

Storage system with multiple media scratch pads

A system or a device having a storage area with a plurality of circumferential tracks around a central axis, the tracks for storing data therein. The system or device includes at least two media scratch pads in the storage area, located at different radii from the central axis. ... Seagate Technology Llc

10/22/15 / #20150304108

Encryption key destruction for secure data erasure

Techniques for encryption key destruction for secure data erasure via an external interface or physical key removal are described. Electrical destruction of key material retained in a memory of a storage device renders the device securely erased, even when the device is otherwise inoperable. ... Seagate Technology Llc

10/22/15 / #20150302881

Imprint template and methods thereof

Provided herein is a method, including forming a first template including a first pattern, wherein forming the first template includes self-assembly of diblock copolymers guided by an initial pattern; forming a second template including a second pattern, wherein the second pattern corresponds to a servo pattern; and forming a master template from the first template, wherein the master template includes one or more portions of the first pattern combined with the second pattern.. . ... Seagate Technology Llc

10/22/15 / #20150302874

Waveguide core layer with reduced downtrack thickness proximate a near-field transducer

An apparatus includes a write pole proximate a media-facing surface of a recording head. A near-field transducer is adjacent to the write pole. ... Seagate Technology Llc

10/22/15 / #20150302872

Spin transport sensor

The implementations disclosed herein provide for a spin transport sensor including a synthetic antiferromagnet (saf) adjacent a shield element. The saf extends to an air-bearing surface (abs) and provides a current path from a current source to an abs-region of a spin conductor layer. ... Seagate Technology Llc

10/22/15 / #20150301747

Dynamic storage device region provisioning

Implementations disclosed herein provide for increasing storage drive performance by reserving a region of user-writeable storage space on a storage medium for overprovisioning uses, including performance-enhancing functions. Until a capacity condition of the storage drive is satisfied, write operations targeting the reserved region are written to another equal-sized region that does not contain user data.. ... Seagate Technology Llc

10/01/15 / #20150279430

Hamr drive fault detection system

A data storage apparatus includes a controller capable of being coupled to a read/write head. The controller is configured to receive a fault signal from a sensor of the read/write head. ... Seagate Technology Llc

10/01/15 / #20150279419

Multi-sensor media defect scan

Apparatus and method for detecting media defects using a multi-sensor transducer. In some embodiments, a first pattern is written to a first track on a rotatable storage media and a second pattern is written to a second track on the media. ... Seagate Technology Llc

10/01/15 / #20150279400

High density granular perpendicular recording media for mechanical reliability and corrosion resistance

An embodiment of the invention relates to a perpendicular magnetic recording medium comprising (1) a substrate, (2) an interlayer comprising hexagonal columns and (3) a magnetic layer, wherein the magnetic layer is deposited applying a bias voltage to the substrate such that the magnetic layer comprises magnetic grains having substantially no sub-grains within the magnetic layer, and the magnetic layer has perpendicular magnetic anisotropy.. . ... Seagate Technology Llc

10/01/15 / #20150279399

Planar plasmon generator with thickened region and peg region

An apparatus (e.g., a heat assisted magnetic recording read/write element) that has an optical component that extends to a location adjacent a media-facing surface of a slider body. The apparatus further includes a planar plasmon antenna that is disposed between the tip portion of the magnetic write pole and the optical component. ... Seagate Technology Llc

10/01/15 / #20150279395

Data write management

Implementations disclosed herein provide systems and methods for data write management in a storage device responsive to detection of a disturbance. Responsive to the detection of the disturbance, a write operation is paused and a transducer head is moved from a first position on the target data track to a second position separated from the first position by at least one data track. ... Seagate Technology Llc

10/01/15 / #20150279394

Branched waveguide configuration

An apparatus including a waveguide input coupler, a tapered branch waveguide, and a waveguide adaptor physically connected to the waveguide input coupler proximal end and to the branch waveguide proximal end. The waveguide input coupler includes a distal end having a distal end width and a proximal end having a proximal end width. ... Seagate Technology Llc

10/01/15 / #20150278015

Flash memory read error recovery with soft-decision decode

An apparatus comprising a memory and a controller. The memory may be configured to store data. ... Seagate Technology Llc

10/01/15 / #20150277799

File management system for devices containing solid-state media

A device comprising a file management system that includes a plurality of first entries and second entries. The first entries are configured function as a logical block address mapping table for data searching operations on data files stored in data blocks of the device, and the second entries are configured to organize the plurality of data blocks into separate logical groups.. ... Seagate Technology Llc

10/01/15 / #20150277761

Storage media performance management

A method or system for comprises determining a certification level of storage area for storing data of a write request based on a characteristic of the data, selecting a target storage area based on a media certification table and the determined certification level and storing data at the target storage area.. . ... Seagate Technology Llc

10/01/15 / #20150277512

Solid state storage system

The invention provides a storage system comprising a solid state storage carrier sized to correspond to a defined storage form factor and to include a support printed circuit board (pcb) having arranged thereon a plurality of solid state storage devices. The storage system can include a storage enclosure including a midplane and at least one slot on an end of the storage enclosure, sized to receive a solid state storage carrier for connection with the midplane in the storage enclosure. ... Seagate Technology Llc

10/01/15 / #20150277039

Layered optical waveguide and near field transducer

Waveguides that include a top cladding layer made of a material having an index of refraction n4; a core bilayer structure, the core bilayer structure including a lower index core layer having an index of refraction n3; and a higher index core layer having an index of refraction n1, wherein the higher index core layer includes tio2 and one or more than one of nb2o5, ceo2, ta2o5, zro2, hfo2, y2o3, sc2o3, mgo, al2o3 and sio2, wherein the lower index core layer is adjacent the higher index core layer; a bottom cladding layer made of a material having an index of refraction n2, wherein the waveguide is configured with the higher index core layer of the core bilayer structure adjacent the top cladding layer and the lower index core layer of the core bilayer structure adjacent the bottom cladding layer, and wherein n4 is less than n3 and n1, and n2 is less than n3 and n1.. . ... Seagate Technology Llc

09/24/15 / #20150269957

Nitrogen-vacancy nanocrystal magnetic source sensor

A sensor may be configured with a nanocrystal that has a nitrogen-vacancy. The nanocrystal can be positioned proximal a magnetic source, mount, and articulable stage. ... Seagate Technology Llc

09/24/15 / #20150269081

Hdd write buffer zone for vibration condition

Technologies are described herein for temporarily writing data to a buffer zone on a recording medium of a storage device when the device is operating in a vibration condition. A vibration condition is detected in the storage device, and upon detecting the vibration condition, data of a current write operation is written to a buffer zone on a recording medium of the storage device, the buffer zone being configured with a lower areal density of storage than primary storage zones on the recording medium. ... Seagate Technology Llc

09/24/15 / #20150268934

Random number generation using pulsed programming parameters

Apparatus and method for generating random numbers. In accordance with some embodiments, the apparatus comprises a random number generator circuit that generates a random number responsive to a total number of programming pulses used to transition a solid-state memory cell from a first programming state to a second programming state.. ... Seagate Technology Llc

09/24/15 / #20150268870

Non-volatile memory channel control using a general purpose programmable processor in combination with a low level programmable sequencer

An apparatus includes a device interface, a micro-sequencer, and a programmable sequence memory. The device interface may be configured to process a plurality of read/write operations to/from one or more non-volatile memory devices. ... Seagate Technology Llc

09/24/15 / #20150266233

Apparatuses and methods utilizing etch stop layers

Provided herein is an apparatus, including a substrate; an etch stop layer overlying the substrate, wherein the etch stop layer is substantially resistant to etching conditions; and a patterned layer overlying the etch stop layer, wherein the patterned layer is substantially labile to the etching conditions, and wherein the patterned layer comprises a number of features including substantially consistent feature profiles among regions of high feature density and regions of low feature density.. . ... Seagate Technology Llc

09/17/15 / #20150263585

Fastener coupling radially inside a stator assembly

Provided herein is an apparatus, including a stator assembly and a hub configured to rotate relative to the stator assembly. The hub comprises a magnet radially outside the stator assembly. ... Seagate Technology Llc

09/17/15 / #20150262712

Manufacturer self-test for solid-state drives

An apparatus comprising a memory and a controller. The memory is configured to process a plurality of read/write operations. ... Seagate Technology Llc

09/17/15 / #20150262606

Templates for patterned media

Provided herein are apparatuses and methods, including patterning a first set of features in a servo zone to form a patterned servo zone while a first mask protects a data zone from the patterning. The first mask may be removed from the data zone. ... Seagate Technology Llc

09/17/15 / #20150262597

Polarization rotator

A polarization rotator for a recording head. The polarization rotator comprises a first waveguide coupled to an input coupler at a first end and a second waveguide. ... Seagate Technology Llc

09/17/15 / #20150262596

Apparatus with first and second close points on media-facing surface of magnetic head

A magnetic head includes a read transducer and a write transducer at a media-facing surface of the magnetic head. The magnetic head includes at least one heater that causes heat deformation at the media-facing surface in response to different first and second energizing currents. ... Seagate Technology Llc

09/17/15 / #20150262099

Advanced material tracking system

A method for tracking and reporting material movements and responding to material movements. Tracked-components are assigned a component identifier which can be associated with a location. ... Seagate Technology Llc

09/17/15 / #20150260757

Probe tip structure for bondingless electronic lapping guide connections

A lapping system including a substrate having an air bearing surface and at least one slider, wherein each slider comprises at least one electronic lapping guide pad, and a probe card comprising at least one extending probe comprising a body member and a distal end, the probe card being movable in a direction of compression between a first position in which the distal end of a first extending probe is spaced from a top surface of one of a first electronic lapping guide pad and a second position in which the distal end of the first extending probe contacts the top surface the first electronic lapping guide pad, wherein the first extending probe is pre-loaded with a predetermined spring force in the direction of compression.. . ... Seagate Technology Llc

09/17/15 / #20150260293

Conical pumping seal

Provided herein is an apparatus, including a stationary component, a rotatable component configured to rotate relative to the stationary component, and a conical pumping seal formed between the stationary component and the rotatable component.. . ... Seagate Technology Llc

09/17/15 / #20150258655

Lapping device or carrier with adaptive bending control

An adaptive bending structure or insert for a lapping device is disclosed. In illustrated embodiments the bending structure provides a wider control width between bending nodes for imparting bending to a workpiece for lapping or longer beam length to increase stroke input at outer ends of the bending structure. ... Seagate Technology Llc

09/10/15 / #20150255102

Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection

A head transducer, configured to interact with a magnetic recording medium, includes a first sensor having a temperature coefficient of resistance (tcr) and configured to produce a first sensor signal, and a second sensor having a tcr and configured to produce a second sensor signal. One of the first and second sensors is situated at or near a close point of the head transducer in relation to the magnetic recording medium, and the other of the first and second sensors spaced away from the close point. ... Seagate Technology Llc

09/10/15 / #20150255098

Multi-purpose near-field transducer having a temperature coefficient of resistance

An apparatus includes a writer, an arrangement comprising a plasmonic near-field transducer (nft) adjacent the writer and comprising a material having a temperature coefficient of resistance (tcr), and a lead arrangement connected to the nft arrangement. In some configurations, the nft arrangement includes a heat sink, and the lead arrangement is connected to the heat sink. ... Seagate Technology Llc

09/10/15 / #20150255097

Near field transducer and heat sink design for heat assisted magnetic recording

Apparatuses, systems, and methods are disclosed related to heat assisted magnetic recording. According to one embodiment, an apparatus that includes a heat sink region and a near field transducer region is disclosed. ... Seagate Technology Llc

09/10/15 / #20150255094

Base plate with relief ring for suspension assembly with modified deformation characteristics

A base plate system including a base plate with first and second opposite surfaces, a boss tower extending from the first surface of the base plate and having an outer surface, a swaging hole extending through a height of the boss tower and a height of the base plate, and a relief channel recessed in the first surface of the base plate and extending around at least a portion of the outer surface of the boss tower, wherein the relief channel comprises a shape that is different from a shape of the outer surface of the boss tower.. . ... Seagate Technology Llc

09/10/15 / #20150255092

Multi-sensor reader with different readback sensitivities

Apparatus for sensing data from a magnetic recording medium using a multi-sensor reader with different readback sensitivities. In accordance with some embodiments, a data transducing head has first and second read sensors. ... Seagate Technology Llc

09/03/15 / #20150248914

Skew compensation in a patterned medium

Apparatus for providing skew compensation in a patterned medium, such as but not limited to a self-assembling bit patterned medium. In accordance with some embodiments, the apparatus includes a transducer and a rotatable substrate. ... Seagate Technology Llc

09/03/15 / #20150248913

Limiter with increased stiffness

A device including a first axial portion, a second axial portion, and a radial portion is disclosed. A portion of the second axial portion is configured to connect to a hub. ... Seagate Technology Llc

09/03/15 / #20150248912

Fused data storage device components

Provided herein is an apparatus, including a first part of a data storage device and a second part of the data storage drive. The second part of the data storage device is fused to the first part substantially throughout opposing surfaces of the first part and the second part, where the opposing surfaces are in contact with each other.. ... Seagate Technology Llc

09/03/15 / #20150248906

Heat assisted magnetic recording head having dual waveguides

Systems that include an energy source configured to provide transverse electric (te) mode energy; a channel waveguide configured to receive energy from the energy source, the channel waveguide having at least one mirror plane; and a near field transducer (nft) configured to receive energy from the channel waveguide, the nft having at least one mirror plane.. . ... Seagate Technology Llc

09/03/15 / #20150248905

Devices including a gas barrier layer

Devices that include a near field transducer (nft); a gas barrier layer positioned on at least a portion of the nft; and a wear resistance layer positioned on at least a portion of the gas barrier layer wherein the gas barrier layer includes tantalum oxide (tao), titanium oxide (tio), chromium oxide (cro), silicon oxide (sio), aluminum oxide (alo), titanium oxide (tio), zirconium oxide (zro), yttrium oxide (yo), magnesium oxide (mgo), beryllium oxide (beo), niobium oxide (nbo), hafnium oxide (hfo), vanadium oxide (vo), strontium oxide (sro), or combinations thereof; silicon nitride (sin), aluminum nitride (al), boron nitride (bn), titanium nitride (tin), zirconium nitride (zrn), niobioum nitride (nbn), hafnium nitride (hfn), chromium nitride (crn), or combinations thereof silicon carbide (sic), titanium carbide (tic), zirconium carbide (zrc), niobioum carbide (nbc), chromium carbide (crc), vanadium carbide (vc), boron carbide (bc), or combinations thereof or combinations thereof.. . ... Seagate Technology Llc

09/03/15 / #20150248901

Devices including near field transducers

An apparatus that includes a near field transducer (nft), the nft including, amongst other elements and materials: tantalum (ta), niobium (nb), molybdenum (mo), rhodium (rh), ruthenium (ru), osmium (os), titanium (ti), zirconium (zr), yttrium (y), hafnium (hf), platinum (pt), palladium (pd), vanadium (v), chromium (cr), iridium (ir), scandium (sc), niobium (ni), cobalt (co), rhenium (re), silicon (si), geranium (ge), alloys thereof, dispersions containing these elements, intermetallics based on these elements, admixtures thereof, or combinations thereof.. . ... Seagate Technology Llc

09/03/15 / #20150248568

Device security using an encrypted keystore data structure

Apparatus and method for data security through the use of an encrypted keystore data structure. In accordance with some embodiments, first and second sets of input data are respectively encrypted using first and second encryption keys to form corresponding first and second encrypted data sets. ... Seagate Technology Llc

09/03/15 / #20150246476

Method for fabricating rectangular pattered stacks

The embodiments disclose an analyzer configured to determine positions of circumferential gratings track features and alignment patterns in a first template and a phase device configured to determine positions of radial gratings features and interspersed pattern fields in a second template, wherein the first template is transferred and cross-imprinted with the second template features and patterns to form a third template substrate as a rectangular patterned stack imprint template.. . ... Seagate Technology Llc

08/27/15 / #20150244815

Communication method and apparatus

A method of, and apparatus for, network communication between a client computer initiator and a target data store. The method includes requesting, by the initiator, a data transfer session between the initiator and the target over a network. ... Seagate Technology Llc

08/27/15 / #20150243313

Compensating for voice coil motor and microactuator disturbance in a hard drive

In response to positioning a read/write head of a hard drive, a voice coil motor (vcm) input signal is applied to a voice coil motor and a microactuator (pzt) input signal is applied to a microactuator. A position signal is determined in response to positioning the read/write head. ... Seagate Technology Llc

08/27/15 / #20150243307

Magnetoresistive sensor

In accordance with one implementation of the described technology, an apparatus comprises a sensor structure including a top shield which includes a top shield synthetic antiferromagnetic layer and a bottom shield including a bottom shield synthetic antiferromagnetic layer, wherein the bottom synthetic antiferromagnetic shield layer acts as a seed layer structure.. . ... Seagate Technology Llc

08/27/15 / #20150243305

Reader with decoupled magnetic seed layer

An apparatus comprising a base shield, a sensor stack, and a base seed layer separating the base shield from the sensor stack. The base seed layer has a base coupled seed section that is coupled with the base shield, and a base uncoupled seed section that is uncoupled with the base shield, wherein the base uncoupled seed section covers a base window surrounding the sensor stack.. ... Seagate Technology Llc

08/27/15 / #20150243302

Read head with multiple reader stacks

A read head includes a bottom shield configured as a bottom electrical contact. A bottom reader stack is disposed on and electrically coupled to the bottom shield. ... Seagate Technology Llc

08/27/15 / #20150243301

Read head with multiple reader stacks

A read head includes a bottom shield and a bottom isolation layer that electrically isolates the bottom shield. The read head includes left and right reader stacks having respective bottom layers disposed on at least a portion of the bottom isolation layer. ... Seagate Technology Llc

08/27/15 / #20150242268

Periodically updating a log likelihood ratio (llr) table in a flash memory controller

Log likelihood ration (llr) values that are computed in a flash memory controller during read retries change over time as the number of program-and-erase cycles (pecs) that the flash memory die has been subjected to increases. Therefore, in cases where an llr table is used to provide pre-defined, fixed llr values to the error-correcting code (ecc) decoding logic of the controller, decoding success and the resulting ber will degrade over time as the number of pecs to which the die has been subjected increases. ... Seagate Technology Llc

08/20/15 / #20150236715

Reduced polar codes

A method for encoding a reduced polar code is disclosed. The method generally includes (a) modifying an input codeword including polar code encoded input data by removing one or more bits from one of (i) a first part of the input codeword and (ii) a second part of the input codeword and (b) generating an output codeword by concatenating the first and the second parts of the modified input codeword.. ... Seagate Technology Llc

08/20/15 / #20150235665

Near-field transducer efficiency monitoring system

A system may have a data storage medium that contains at least one data bit that is accessed by a transducing head that has a near-field transducer. A controller can be connected to the transducing head and store a plurality of near-field transducer operating currents in a memory. ... Seagate Technology Llc

08/20/15 / #20150235658

Heat sink layer along an aperture of a near-field transducer

A recording head includes a near-field transducer proximate a media-facing surface. The near-field transducer includes an aperture surrounded by walls of plasmonic material and a notch protruding within the aperture. ... Seagate Technology Llc

08/20/15 / #20150234741

Command execution using existing address information

Method and apparatus for managing data in a memory, such as a flash memory. In accordance with some embodiments, a memory module has a plurality of solid-state non-volatile memory cells. ... Seagate Technology Llc

08/20/15 / #20150234599

Locating data in non-volatile memory

Systems and methods presented herein provide for locating data in non-volatile memory by decoupling a mapping unit size from restrictions such as the maximum size of a reducible unit to provide efficient mapping of larger mapping units. In one embodiment, a method comprises mapping a logical page address in a logical block address space to a read unit address and a number of read units in the non-volatile memory. ... Seagate Technology Llc

08/13/15 / #20150227457

Managing response time

Implementations disclosed herein provide for a method comprising receiving a read request to read data from a target die of a storage device, and rebuilding the data stored on the target die using data stored on other dies of the storage device, if a current operation to the target die of the storage device prevents the servicing of the read request until completion of the current operation.. . ... Seagate Technology Llc

08/06/15 / #20150219569

Surface features mapping

. . Provided herein is an apparatus, including a light source configured to illuminate a surface of an article, wherein light incident upon the surface of the article is collimated light; a light detector array including a plurality of light sensors configured to receive scattered light from features about the surface of the article; and a processing means for mapping the features about the surface of the article, wherein the processing means is configured to map the features by analyzing the scattered light received at the light detector array.. . ... Seagate Technology Llc

07/30/15 / #20150213901

Programming a memory cell using a dual polarity charge pump

Apparatus and method for managing data in a memory, such as but not limited to a flash memory array. In some embodiments, an apparatus includes an array of memory cells and a dual polarity charge pump. ... Seagate Technology Llc

07/30/15 / #20150213819

Laser mounted on edge

An apparatus that includes a slider having a mounting surface, the mounting surface opposite a media-facing surface of the slider. The apparatus includes a laser diode mounted on a side surface to the mounting surface. ... Seagate Technology Llc

07/30/15 / #20150213817

Heater to keep reader head in stable temperature range

Technologies are described herein for utilizing a head heater to test temperature stability of a head of a storage device and to prevent the head from operating in an unstable temperature condition. A temperature condition of a read/write head in a storage device is ascertained and it is determined whether the temperature condition is within a predetermined range of temperature conditions in which the read/write head exhibits instability. ... Seagate Technology Llc

07/30/15 / #20150213815

Synthetic antiferromagnetic reader

Implementations disclosed herein provide for an apparatus, comprising a synthetic antiferromagnetic reader structure, wherein total moment of a pinned layer is substantially greater than total moment of a reference layer. In one implementation, the pinning strength of the pinned layer is substantially reduced.. ... Seagate Technology Llc

07/30/15 / #20150213813

Preamplifier for adjustable write current

The implementations disclosed herein provide for a storage device including a preamplifier that dynamically adjusts at least one of a rise time and fall time of an analog write current pulse based on a length of a corresponding write transition and/or characteristics of a media location where the write transition is to be recorded.. . ... Seagate Technology Llc

07/30/15 / #20150211576

Lubricating fluid-filling methods and apparatuses

Provided herein is an apparatus, comprising a stationary component comprising a cup having a volume reserved for receiving a predetermined amount of lubricating fluid; a rotatable component comprising a sleeve, wherein the rotatable component is fitted within the stationary component in a position substantially above the volume; and an annular member configured for forming a thrust bearing with the sleeve.. . ... Seagate Technology Llc

07/30/15 / #20150209839

Workpiece cleaning

Certain exemplary aspects of the present disclosure are directed towards apparatuses and methods which autonomously decontaminate parts. Parts to be cleaned are identified, and based on the identification of the part, a part specific cleaning program is initiated. ... Seagate Technology Llc

07/23/15 / #20150208550

Dissipating heat during device operation

Apparatus for dissipating heat during the operation of a device. In accordance with some embodiments, the apparatus compares spaced-apart first and second heat sources. ... Seagate Technology Llc

07/23/15 / #20150206549

Chemical pinning to direct addressable array using self-assembling materials

A substrate having an arrangement of self-assembling magnetic domains and a method of fabrication therefor. In some embodiments, a substrate is patterned with a plurality of chemically contrasted alignment features, and a block copolymer having a magnetic component and a non-magnetic component is deposited onto the substrate. ... Seagate Technology Llc

07/23/15 / #20150206548

Imprint pattern guided self-assembly of lamellar block copolymer for bpm

The embodiments disclose a method of using a trimmed imprinted resist and chemical contrast pattern to guide a directed self-assembly (dsa) of a predetermined lamellar block copolymer (bcp), creating chromium (cr) lamellar guiding lines using the bcp and dsa in a dry cr lift-off process and etching the cr lamellar guiding line patterns into a substrate to fabricate the imprint template.. . ... Seagate Technology Llc

07/23/15 / #20150205531

Adding storage capacity to an object storage system

Apparatus and method for adding storage capacity to an object storage system. In accordance with some embodiments, a first set of data storage devices store data objects in accordance with a first map structure. ... Seagate Technology Llc

07/23/15 / #20150205527

Zero-one balance management in a solid-state disk controller

An ssd controller maintains a zero count and a one count, and/or in some embodiments a zero/one disparity count, for each read unit read from an slc nvm (or the lower pages of an mlc). In an event that the read unit is uncorrectable in part due to a shift in the threshold voltage distributions away from their nominal distributions, the maintained counts enable a determination of a direction and/or a magnitude to adjust a read threshold to track the threshold voltage shift and restore the read data zero/one balance. ... Seagate Technology Llc

07/16/15 / #20150201493

Flex circuit having a multiple layered structure and interconnect

A flex circuit including a multiple layer structure is disclosed. The multiple layered structure includes a first or top layer and a second or base layer. ... Seagate Technology Llc

07/16/15 / #20150200833

Adaptive data migration using available system bandwidth

Apparatus and method for migrating data within an object storage system using available storage system bandwidth. In accordance with some embodiments, a server communicates with users of the object storage system over a network. ... Seagate Technology Llc

07/16/15 / #20150200707

Adaptive spread-spectrum clocking

Technologies are described herein for adaptive spread-spectrum clocking to limit interference in a target band. Interference in the target band may be reduced by changing the frequency of the clock signal at a higher modulation rate for clock frequencies that interfere with, or are correlated to, the target band and changing the frequency of the clock signal at a lower modulation rate for the clock frequencies that are not correlated to the target band.. ... Seagate Technology Llc

07/16/15 / #20150199983

Varying write pole side shield gap

A magnetic element can be configured with a write pole that continuously extends from an air bearing surface along a plane orthogonal to the air bearing surface. A magnetic shield can be separated from the write pole by a first gap distance on the air bearing surface throughout a tip portion of the write pole and by a second gap distance distal the air bearing surface along the plane orthogonal to the air bearing surface along a body portion of the write pole with the first and second gap distances measured parallel to the air bearing surface and the second gap distance being greater than the first gap distance.. ... Seagate Technology Llc

07/16/15 / #20150199982

Varying write pole side shield gap

A magnetic element can be constructed by forming a write pole with a tip portion that continuously extends from an air bearing surface (abs) along a plane orthogonal to the abs to a body portion that continuously extends from the tip portion distal the abs. A first write gap layer can then be deposited in contact with the write pole before a processing layer is deposited in contact with the first write gap layer. ... Seagate Technology Llc

07/09/15 / #20150194182

Design requirement relaxation for multiple readers in presence of large skew angle range

A readback signal from a first reader and a readback signal from a second reader are received, the first reader and the second reader configured to read two-dimensional data from at least one track of a recording media. A quality metric of the second reader is measured based on the readback signal. ... Seagate Technology Llc

07/09/15 / #20150194175

Magnetic stack including crystallized segregant induced columnar magnetic recording layer

A stack includes a substrate, a magnetic recording layer having a columnar structure, and an interlayer disposed between the substrate and the magnetic recording layer. The columnar structure includes magnetic grains separated by a crystalline segregant or a combination of crystalline and amorphous segregants.. ... Seagate Technology Llc

07/09/15 / #20150194172

Light blocker for stray light reduction within a slider

A waveguide has an input end near a top of a slider coupled to receive light from an energy source. The waveguide delivers the light at an output end of the waveguide near a bottom of the slider. ... Seagate Technology Llc

07/09/15 / #20150194171

Low translational load suspension assembly

Implementations described and claimed herein address the foregoing problems by providing a suspension assembly used in a storage device to support a transducer head, wherein the suspension assembly comprises a base plate for attaching to an actuator arm and a moving portion movably attached to the base plate. The base plate is fixed and/or clamped to the actuator arm and the moving portion adapted to rotate about a center of rotation. ... Seagate Technology Llc

07/02/15 / #20150187413

Methods and apparatuses using a transfer function to predict resistance shifts and/or noise of resistance-based memory

Two or more workload indicators affecting a memory cell of a resistance-based, non-volatile memory are measured. The two or more workload indicators are applied to a transfer function that predicts a resistance shift and/or resistance noise variance in response to the two or more workload indicators. ... Seagate Technology Llc

07/02/15 / #20150187378

Peg height of near-field transducers

A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a hamr magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. ... Seagate Technology Llc

07/02/15 / #20150187373

Method for fabricating a magnetic assembly having side shields

Methods for fabricating a shield structure for a pole tip of a write element for magnetic recording are disclosed. In illustrated embodiments disclosed, a side shield deposition is etched below a front edge surface of the pole tip and one or more depositions are deposited on the etched side shield deposition to form a side shield structure having an extended gap region to enhance performance of the write element. ... Seagate Technology Llc

06/25/15 / #20150179414

Apparatus with sidewall protection for features

Provided herein is an apparatus, including a patterned resist overlying a substrate; a number of features of the patterned resist, wherein the number of features respectively includes a number of sidewalls; and a sidewall-protecting material disposed about the number of sidewalls, wherein the sidewall-protecting material is characteristic of a conformal, thin-film deposition, and wherein the sidewall-protecting material facilitates a high-fidelity pattern transfer of the patterned resist to the substrate during etching.. . ... Seagate Technology Llc

06/25/15 / #20150179268

Using different programming modes to store data to a memory cell

Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with some embodiments, a memory cell is provided with a plurality of available programming states to accommodate multi-level cell (mlc) programming. ... Seagate Technology Llc

06/25/15 / #20150179216

Contamination reduction head for media

A cleaning head for removing contaminants from a data storage media, the cleaning head having a cleaning surface comprising a self-assembled monolayer, with the cleaning surface leading a read/write transducer. The self-assembled monolayer is selected so as to have a terminal functional group that has a high affinity to the contaminant(s) desired to be attracted and/or removed.. ... Seagate Technology Llc

06/25/15 / #20150179209

Plasmonic transducer having two metal elements with a gap disposed therebetween

A plasmonic transducer includes at least two metal elements with a gap therebetween. The metal elements are elongated along a plasmon-enhanced, near-field radiation delivery axis. ... Seagate Technology Llc

06/25/15 / #20150179202

Exchange decoupled data storage medium

A magnetic data storage medium capable of storing data bits may be configured at least with a magnetic underlayer structure and a recording structure. The recording structure can have at least a first magnetic layer and a second magnetic layer with the first magnetic layer decoupled by being constructed of an alloy of cobalt, platinum, and a platinum group metal element.. ... Seagate Technology Llc

06/25/15 / #20150179201

Devices having electrodes on the trailing edge surface

A slider that includes a slider body, the slider body having a trailing edge surface and an opposing leading edge surface; an air bearing surface (abs) between the trailing edge surface and the leading edge surface; a read/write head located on the trailing edge surface of the slider body; an electrode array located on the trailing edge surface of the slider body, the electrode array including at least a first electrode and at least a second electrode; and first and second bias circuits, wherein the first bias circuit is electrically coupled to the at least first electrode and the second bias circuit is electrically coupled to the at least second electrode.. . ... Seagate Technology Llc

06/25/15 / #20150179200

Slider including one or more fluid pathways, and related apparatuses and methods

The present invention is directed to a slider that includes at least one fluid pathway that is in fluid communication with an air bearing face and/or the trailing edge face of the slider. The at least one fluid pathway is configured to propel/transport a fluid such as a lubricant toward at least one side face via capillary action. ... Seagate Technology Llc

06/25/15 / #20150179199

Optical devices including layers that wrap the near field transducer (nft)

A device having an air bearing surface (abs), the device including a near field transducer (nft), the nft having at least a portion thereof at the abs; a first wrap layer, the first wrap layer surrounding at least a portion of the nft, the first wrap layer having a thickness of not greater than about 30 nanometers (nm), and the first wrap layer being made of a material that has a refractive index (n) that is not greater than 2.0; a second wrap layer, the second wrap layer surrounding at least a portion of the first wrap layer, the second wrap layer having a thickness that is not greater than 100 nm, and the second wrap layer being made of a material that has a refractive index (n) that is at least about 1.9; and a top cladding layer surrounding at least a portion of the second wrap layer, the top cladding layer being made of a material that has a refractive index (n) that is not greater than 2.0.. . ... Seagate Technology Llc

06/25/15 / #20150179194

Devices including at least one intermixing layer

Devices that include a near field transducer (nft), the nft including a peg having five surfaces, the peg including a first material, the first material including gold (au), silver (ag), aluminum (al), copper (cu), ruthenium (ru), rhodium (rh), iridium (ir), or combinations thereof; an overlying structure; and at least one intermixing layer, positioned between the peg and the overlying structure, the at least one intermixing layer positioned on at least one of the five surfaces of the peg, the intermixing layer including at least the first material and a second material.. . ... Seagate Technology Llc

06/25/15 / #20150178148

Threshold voltage calibration using reference pattern detection

A memory controller identifies a predominant type of error of a memory unit of solid state memory cells. An error type differential is calculated. ... Seagate Technology Llc

06/25/15 / #20150177781

Data storage device enclosure and module

An electronics module for a data storage device enclosure, and, data storage device enclosures. The module comprises an enclosure connector for connecting to the enclosure, at least one bay constructed and arranged to receive a data storage device, and a controller arranged to selectively provide access to storage devices to which it is connected. ... Seagate Technology Llc

06/18/15 / #20150172810

Disc drive speaker vibration mitigation

Certain exemplary aspects of the present disclosure are directed towards apparatuses and methods which mitigate the effect of speaker vibration on a disc drive. Audio associated with a speaker output is detected and triggers the generation of an output signal indicative of speaker vibration associated with such an audio output of a speaker. ... Seagate Technology Llc

06/18/15 / #20150170699

Cooling periods used during the writing of bit boundaries to a magnetic recording media

Polarity transitions of a write signal applied to a write coil correspond to first bit boundaries written to a magnetic recording media. A heat signal is applied to heat the magnetic recording media via a heat source while bits are being written. ... Seagate Technology Llc

06/18/15 / #20150170697

Perpendicular magnetic recording media with magnetic anisotropy gradient and local exchange coupling

A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic coercivity hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.. . ... Seagate Technology Llc

06/18/15 / #20150170689

Slider cavity feature for gimbal attachment

Disclosed is an embodiment of a suspension for a disk drive having a slider configured for bonding with a gimbal using an adhesive. Embodiments of the slider include one or more cavities in a portion of a slider mounting surface of the slider. ... Seagate Technology Llc

06/18/15 / #20150170686

Magnetoresistive sensor shield

Implementations disclosed herein provide for a magnetoresistive (mr) sensor including a synthetic antiferromagnetic (saf) structure that is magnetically coupled a side shield element. The saf structure includes at least one magnetic amorphous layer that is an alloy of a ferromagnetic material and a refractory material. ... Seagate Technology Llc

06/18/15 / #20150170684

Devices including at least one adhesion layer and methods of forming adhesion layers

Devices that include a near field transducer (nft), the nft having a disc and a peg, and the peg having an air bearing surface; and at least one adhesion layer positioned on the air bearing surface of the peg, the adhesion layer including one or more of the following: tungsten (w), molybdenum (mo), chromium (cr), silicon (si), nickel (ni), tantalum (ta), titanium (ti), yttrium (y), vanadium (v), magnesium (mg), cobalt (co), tin (sn), niobium (nb), hafnium (hf), and combinations thereof; tantalum oxide, titanium oxide, tin oxide, indium oxide, and combinations thereof; vanadium carbide (vc), tungsten carbide (wc), titanium carbide (tic), chromium carbide (crc), cobalt carbide (coc), nickel carbide (nic), yttrium carbide (yc), molybdenum carbide (moc), and combinations thereof and titanium nitride (tin), zirconium nitride (zrn), hafnium nitride (hfn), and combinations thereof.. . ... Seagate Technology Llc

06/18/15 / #20150170681

Write head with modified side shields

A write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing surface, a leading surface that is opposite the trailing surface, and first and second surfaces; a trailing shield proximate the trailing surface of the magnetic write pole; first and second gaps proximate the first and second surfaces of the magnetic write pole; first and second side shields proximate the first and second gaps, each of the first and second side shields having a trailing shield surface; and first and second antiferromagnetic-coupling layers positioned between the trailing shield surfaces of the first and second side shields and the trailing shield.. . ... Seagate Technology Llc

06/18/15 / #20150170680

Devices including magnetic read sensor and shields

Devices having an air bearing surface (abs), the device including a first read sensor; a first read sensor shield; and a first stray field shield, wherein the first read sensor shield is configured to shield at least the first read sensor from magnetic fields of the device, and the first stray field shield is configured to shield the first read sensor from stray environmental magnetic fields.. . ... Seagate Technology Llc

06/18/15 / #20150170678

Shielding and electrical contact design for devices with two or more read elements

A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.. . ... Seagate Technology Llc

06/18/15 / #20150169466

Memory stacks management

A method for managing a memory stack provides mapping a part of the memory stack to a span of fast memory and a part of the memory stack to a span of slow memory, wherein the fast memory provides access speed substantially higher than the access speed provided by the slow memory.. . ... Seagate Technology Llc

06/18/15 / #20150169460

Shingled media write operation

A method or system comprises determining an end data track of a write operation in response to a request for the write operation in a shingled media storage device, saving data from an adjacent track following the end data track to a cache, performing the write operation.. . ... Seagate Technology Llc

06/18/15 / #20150169402

Soft-decision compensation for flash channel variation

In an ssd controller reading from flash memory, subsequent to failure of an initial soft-decision decoding attempt based on a nominal llr, soft-decision re-decoding attempts are made using compensated llr soft-decision information sets, pre-calculated at respective read-equilibrium points corresponding to mean shifts and variance change in the actual charge-state distributions of the flash memory channel. According to embodiment, soft-decision re-decoding attempts are performed without a retry read, or overlapped with one or more retry reads. ... Seagate Technology Llc

06/18/15 / #20150169023

Power loss mitigation

An implementation of a system disclosed herein provides a method comprising detecting a power loss to an apparatus, isolating the apparatus from a power supply, notifying the apparatus of the power loss, and extending operation of the apparatus for a predetermined time period using a charge reservoir.. . ... Seagate Technology Llc

06/18/15 / #20150167155

Magnetic layer patterning by ion implantation

Provided herein is a method including conformally depositing a first layer over a patterned resist; depositing a second, thicker layer over the first layer; etching the second layer to expose the first layer; and patterning a magnetic layer by ion implantation in accordance with the patterned resist to form a patterned magnet layer.. . ... Seagate Technology Llc

06/18/15 / #20150165578

Positioning apparatus

Provided herein is an apparatus including a loader configured to position a workpiece in a holding fixture. In some embodiments, the holding fixture includes an opening configured to removably receive the workpiece therein and hold the workpiece in a target position within the opening. ... Seagate Technology Llc

06/11/15 / #20150162046

Apparatus with repulsive force between stationary and rotatable components

Provided herein, is an apparatus that includes a fluid dynamic bearing, a hub, and an induction housing. The fluid dynamic bearing is defined by a stationary component and a rotatable component. ... Seagate Technology Llc

06/11/15 / #20150162040

Adjusting a clearance between a magnetic head and a magnetic recording medium using a magnetic force

A media-facing surface of a magnetic head is positioned proximate a moving magnetic recording medium. A current is applied to an electromagnet of the magnetic head. ... Seagate Technology Llc

06/11/15 / #20150162039

Multiple heaters independently controlling clearance of two or more read transducers

A apparatus includes first and second read transducers arranged on a media-facing surface. The read transducers detect magnetic fields of a recording medium. ... Seagate Technology Llc

06/11/15 / #20150162038

Electrically removable heater for a thermally actuatable thermal asperity sensor

An apparatus comprising a writer, a reader, and a sensor configured to at least sense thermal asperities of a magnetic storage medium. The apparatus includes a writer heater configured to thermally actuate the writer, a reader heater configured to thermally actuate the reader, and a sensor heater configured to thermally actuate the sensor. ... Seagate Technology Llc

06/11/15 / #20150162035

Discontinuous charge/discharge power source for retract application

In accordance with one embodiment of the described technology, a retract controller capacitor is charged using a back electromagnetic force voltage to produce a backup power source voltage, the retract controller capacitor is discharged to power a retract controller circuit, and an actuator arm of a storage drive is driven toward a desired location concurrently with the discharging operation.. . ... Seagate Technology Llc

06/11/15 / #20150162030

Methods of forming near field transducers and near field transducers formed thereby

A method of forming a near field transducer (nft), the method including the steps of depositing a plasmonic material; depositing an encapsulant material on at least a portion of the plasmonic material; and implanting ions into at least a portion of the plasmonic material through the encapsulant material.. . ... Seagate Technology Llc

06/11/15 / #20150162028

Methods of forming near field transducers and near field transducers formed thereby

A method of forming a near field transducer (nft), the method including the steps of depositing a primary material; and implanting a secondary element, wherein both the primary material and the secondary element are chosen such that the primary material is densified via implantation of the secondary element.. . ... Seagate Technology Llc

06/11/15 / #20150162025

Light source alignment

Implementations disclosed herein provide a method comprising emitting light at a plurality of locations across a surface of a recording head assembly, detecting, using a detector not positioned along a waveguide axis, light output from a diffraction grating positioned along the waveguide axis, and determining a target position for mounting a laser source on the surface a recording head assembly by analyzing the detected light output corresponding to one or more of the plurality of locations.. . ... Seagate Technology Llc

06/11/15 / #20150162022

Flexible biasing strategy for ground-split tcr sensors

A first biasing potential is sent to a first input end of a first temperature coefficient of resistance (tcr) sensor having a first ground end coupled to a ground potential. A second biasing potential is sent to a second input end of a second tcr sensor having a second ground end coupled to the ground potential. ... Seagate Technology Llc

06/04/15 / #20150155164

Patterned mask using cured spin-on-glass composition

Provided herein are methods for depositing a spin-on-glass composition over an imprinted resist; curing the spin-on-glass composition to form a cured spin-on-glass composition; and forming a patterned mask by etching the cured spin-on-glass composition, the resist, and an underlying mask composition, wherein the patterned mask comprises features of the cured spin-on-glass composition atop the mask composition, and wherein curing the spin-on-glass composition is configured to prevent shifting or toppling of the spin-on glass composition from atop the mask composition while forming the patterned mask.. . ... Seagate Technology Llc

06/04/15 / #20150155050

Data protection for unexpected power loss

A data storage device receives a write data command and data. The data is stored in a buffer of the data storage device. ... Seagate Technology Llc

06/04/15 / #20150154997

Combining features using directed self-assembly to form patterns for etching

Provided herein is a method, including etching a first pattern into a mask, wherein the first pattern includes a first set of features corresponding to features of an imprint template; forming a second set of features over and in-between the first set of features by directed self-assembly of a block copolymer composition, wherein the first and second sets of features combine to form a second pattern; and etching the second pattern into a substrate. . ... Seagate Technology Llc

06/04/15 / #20150154995

Method for fabricating a patterned composite structure

Provided herein is an apparatus comprising a substrate; a continuous layer over the substrate comprising a first heat sink layer; and a plurality of features over the continuous layer comprising a second heat sink layer, a first magnetic layer over the second heat sink layer, and a second magnetic layer, wherein the first and second magnetic layers are configured to provide a temperature-dependent, exchange spring mechanism.. . ... Seagate Technology Llc

06/04/15 / #20150154989

Heat assisted magnetic recording heads having bilayer heat sinks

Disclosed herein is an apparatus that includes a near field transducer positioned adjacent to an air bearing surface of the apparatus; a first magnetic pole; and a heat sink positioned between the first magnetic pole and the near field transducer, wherein the heat sink includes a first and second portion, with the first portion being adjacent the near field transducer and the second portion being adjacent the first magnetic pole, the first portion including a plasmonic material, and the second portion including a diffusion blocking material.. . ... Seagate Technology Llc

06/04/15 / #20150154985

Magnetic flux barrier

Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. ... Seagate Technology Llc

06/04/15 / #20150154070

Mixed granularity higher-level redundancy for non-volatile memory

Mixed-granularity higher-level redundancy for nvm provides improved higher-level redundancy operation with better error recovery and/or reduced redundancy information overhead. For example, pages of the nvm that are less reliable, such as relatively more prone to errors, are operated in higher-level redundancy modes having relatively more error protection, at a cost of relatively more redundancy information. ... Seagate Technology Llc

06/04/15 / #20150154065

Adaptive read error recovery for memory devices

Some embodiments involve a method of detecting an error of a memory device. It is determined whether the detected error is a catastrophic error. ... Seagate Technology Llc

06/04/15 / #20150154064

Adaptive read error recovery for memory devices

An error of a solid-state non-volatile memory is detected. It is determined whether a type of the error is a first type of error. ... Seagate Technology Llc

05/28/15 / #20150149869

Physical subsector error marking

Physical subsector error marking allows for selectively marking subsectors of a physical sector of a storage medium as unreadable. The error marking may include a bad sector mask to indicate that the subsector is unreadable combined with an error signature to confirm that the bad sector mask was set intentionally. ... Seagate Technology Llc

05/28/15 / #20150149622

Scheduling requests for data transfers in a multi-device storage system

Apparatus and method for scheduling requests for data transfers in a multi-device storage system. In some embodiments, a system includes at least one server coupled to a pool of storage devices to transfer data from the storage devices to client devices responsive to requests. ... Seagate Technology Llc

05/28/15 / #20150147592

Storage medium with layer(s) for enhanced heating

An apparatus that includes a storage layer and a heating assistance element. The heating assistance element is adjacent to the storage layer or doped into the storage layer. ... Seagate Technology Llc

05/28/15 / #20150146824

Indexed i/o symbol communications

One implementation of the disclosed technology involves detecting a transition in a signal received via one of a first indexed input and a second indexed input. The transition defines a first symbol having a symbol value. ... Seagate Technology Llc

05/28/15 / #20150146508

Interlayer for device including nft and cladding layers

A device that includes a near field transducer (nft); at least one cladding layer adjacent the nft; and a discontinuous metal layer positioned between the nft and the at least one cladding layer.. . ... Seagate Technology Llc

05/28/15 / #20150146505

Recording head structure

Implementations disclosed herein provide a transducer head including a writer feature extending to a transducer head surface, the transducer head surface being configured to face a storage medium surface; and a bumper structure configured on the transducer head surface, the bumper structure configured to be proximal to the writer feature and to protrude beyond the writer feature in response to energy.. . ... Seagate Technology Llc

05/21/15 / #20150143039

Restoring virtualized gcu state information

Method and apparatus for managing a memory, such as but not limited to a flash memory. In accordance with some embodiments, initial state information is stored which identifies an actual state of a garbage collection unit (gcu) of a memory during a normal operational mode. ... Seagate Technology Llc

05/21/15 / #20150139574

Radial channel with fluid reservoir

Provided is an apparatus, including a stationary component; a rotatable component, wherein the stationary component and the rotatable component are positioned for relative rotation; a first sealing means positioned in a radial channel at a first axial end of the rotatable component; a second sealing means positioned in an axial channel at a second axial end of the rotatable component; and a fluid reservoir adjacent to the first sealing means and extending radially outward from the first sealing means, wherein the fluid reservoir is positioned radially outward from the pump seal, and wherein the fluid reservoir extends radially outward from the pump seal.. . ... Seagate Technology Llc

05/21/15 / #20150137644

Apparatus with polymer permeability path

Certain exemplary aspects of the present disclosure are directed towards an apparatus in which a base deck and a base deck cover interface with one another to provide a permeability path. The base deck includes an outer region, and the base deck cover includes a lip that interfaces with the outer region of the base deck to provide the permeability path. ... Seagate Technology Llc

05/07/15 / #20150127930

Authenticated device initialization

Apparatus and method for performing authentication processing during device initialization. In accordance with some embodiments, a data storage device has a main memory which stores user data from a host, and a controller with initialization programming stored in a boot memory. ... Seagate Technology Llc

05/07/15 / #20150127138

Adaptive fastener access tool

A tool may be configured at least with a fastener that can be accessed with a shaped bit. A controller portion of the tool can be arranged to predict bit deflection that enables a tool configuration to be adapted in response to actual bit deflection to conform to the predicted bit deflection.. ... Seagate Technology Llc

05/07/15 / #20150124355

Recording head with piezoelectric contact sensor

Example embodiments include an apparatus that has a piezoelectric contact sensor. The piezoelectric contact sensor includes a semiconductor device having a semiconductor material that defines a channel through which current can flow. ... Seagate Technology Llc

05/07/15 / #20150124354

Contact pad for recording heads

A recording head that includes at least one protection feature that prevents at least one other feature of the recording head from directly colliding with a data storage medium with which the recording head communicates. The recording head includes a transducer element having a leading edge and a trailing edge. ... Seagate Technology Llc

05/07/15 / #20150123335

Lapping assembly or process utilizing a bar stack extender

A slider bar extender to removably connect one or more slider bars to a processing machine or tool is disclosed. In illustrated embodiments, the extender is coupled to a holder structure through a tongue and groove connection. ... Seagate Technology Llc

04/30/15 / #20150121031

Adaptive guard band for improved data storage capacity

An adaptive guard band for a ramp load/unload device is disclosed to provide extended data storage. In illustrated embodiments, an adaptive guard band algorithm is configured to format one or more discs or media having a lower capacity device with the adaptive guard band and extended data zone utilizing capacity measurements. ... Seagate Technology Llc

04/30/15 / #20150120636

Deriving an operational state of a data center using a predictive computer analysis model

Performance of a data center is predicted using a computer analysis model. Operational measurements of components of computing nodes of the data center are received as input to the computer analysis model. ... Seagate Technology Llc

04/30/15 / #20150118625

Block copolymer self-assembly for pattern density multiplication and rectification

Provided herein is a method, including a) transferring an initial pattern of an initial template to a substrate; b) performing block copolymer self-assembly over the substrate with a density multiplication factor k; c) creating a subsequent pattern in a subsequent template with the density multiplication factor k; and d) repeating steps a)-c) with the subsequent template as the initial template until a design specification for the subsequent pattern with respect to pattern density and pattern resolution is met.. . ... Seagate Technology Llc

04/30/15 / #20150117170

Devices including near field transducer and adhesion layers

A device including a near field transducer (nft); a write pole; at least one dielectric material positioned between the nft and the write pole; and an adhesion layer positioned between the nft and the at least one dielectric material.. . ... Seagate Technology Llc

04/30/15 / #20150117169

Near-field transducer with rounded or obtuse corners

Embodiments are directed to an apparatus having an air-bearing surface that is configured to interact with magnetic medium. The apparatus includes a waveguide and a plasmonic near-field transducer positioned at or near the air-bearing surface. ... Seagate Technology Llc

04/30/15 / #20150116870

Spin transport sensor

The implementations disclosed herein provide for a spin transport sensor including a synthetic antiferromagnet (saf) adjacent a shield element. The saf extends to an air-bearing surface (abs) and provides a current path from a current source to an abs-region of a spin conductor layer. ... Seagate Technology Llc

04/30/15 / #20150116868

Layered synthetic anti-ferromagnetic upper shield

A magneto-resistive (mr) sensor may include a variety of individual functional layers whereby an electrical resistance throughout the layers of the sensor stack varies according to the polarity of a pinned layer within the sensor stack. A layered synthetic anti-ferromagnetic (saf) upper shield of the mr sensor includes an upper saf layer and a lower saf layer separated by a shield anti-ferromagnetic (afm) layer. ... Seagate Technology Llc

04/30/15 / #20150116863

Adaptive guard band for multiple heads of a data storage device

An adaptive guard band scheme is disclosed for a data storage device. In illustrated embodiments, the adaptive guard band scheme formats different guard band cylinders and track zeros for different heads depending upon a contact cylinder of the different heads. ... Seagate Technology Llc

04/30/15 / #20150116862

Data storage device with hgsa offset compensation

A data storage device may be configured at least with an actuating assembly that has a head-gimbal suspension assembly (hgsa), first pivot point, and second pivot point. The head-gimbal assembly can be constructed and operated with at least first and second transducers aligned along a longitudinal axis of the head-gimbal suspension assembly. ... Seagate Technology Llc

04/30/15 / #20150116690

Bit patterned media template including alignment mark and method of using same

A method is disclosed that includes forming at least one substrate alignment mark and at least one lithography alignment mark in a substrate; forming a seed layer on the substrate; and forming a guide pattern and at least one guide pattern alignment mark in the seed layer, where the at least one guide pattern alignment mark is formed over the at least one substrate alignment mark. The method further includes determining an alignment error of the at least one guide pattern alignment mark relative to the at least one substrate alignment mark; and patterning features on at least one region of the substrate, where the features are positioned on the substrate based on the at least one lithography alignment mark and the alignment error.. ... Seagate Technology Llc

04/23/15 / #20150113201

Method and system for preserving data of a storage device

A method and system for preserving data of a storage device are disclosed. In one embodiment, the method includes determining a number of times data is written to a first track in a first region of a storage medium, and rewriting data from a second track that is adjacent to the first track in the first region if the number of times data is written to the first track in the first region exceeds a first predetermined threshold. ... Seagate Technology Llc

04/23/15 / #20150111468

Lapping head with a sensor device on the rotating lapping head

The application discloses embodiments of a lapping head including a sensor device in the base structure of the rotating lapping head. For operation, rotation is imparted to the lapping head through a drive motor coupled to the lapping head through a rotating shaft. ... Seagate Technology Llc

04/23/15 / #20150110145

Semiconductor laser with cathode metal layer disposed in trench region

A laser diode includes a substrate and a junction layer disposed on the substrate. The junction layer forms a quantum well of the laser diode. ... Seagate Technology Llc

04/16/15 / #20150106568

Multi-tiered caching for data storage management in a device

A data storage device includes one or more storage media that include multiple physical storage locations. The device also includes at least one cache memory having a logical space that includes a plurality of separately managed logical block address (lba) ranges. ... Seagate Technology Llc

04/16/15 / #20150106546

Ordering a plurality of write commands associated with a storage device

A system, method, and computer program product are provided for ordering a plurality of write commands associated with a storage device. In operation, a plurality of write commands associated with a storage device to be sent to a device are identified. ... Seagate Technology Llc

04/16/15 / #20150103445

T-shaped write pole

A magnetic element may be generally configured with at least a write pole that has leading and trailing regions on an air bearing surface. The leading region may have a trailing width connected to a leading width of the trailing region via a transition feature to form a substantially t-shaped cross-section on the air bearing surface.. ... Seagate Technology Llc

04/16/15 / #20150103444

Slider with high and low surface energy coatings proximate transducer

A slider, such as for a data storage system, the slider having a leading edge, a trailing edge, an air-bearing surface, and a transducer proximate the trailing edge. The slider has a low surface energy coating on the air-bearing surface and a high surface energy coating on the transducer. ... Seagate Technology Llc

04/16/15 / #20150103443

Methods of manufacturing magnetic heads using a trigger reader electronic lapping guide

A method of manufacturing a magnetic read-write head, including the steps of presenting a row bar to a processing location, the row bar including an air bearing surface, at least one read-write head, at least one electronic lapping guide, and at least one trigger device, wherein each electronic lapping guide is positioned at a different distance from the air bearing surface than each trigger device, and wherein the read-write head and at least one of the trigger devices include a multi-layer stack of materials; lapping the air bearing surface while measuring the electrical resistance of at least one electronic lapping guide and at least one trigger device until the resistance measurement of the trigger device provides an open circuit reading, and measuring an offset resistance value of the at least one electronic lapping guide concurrently with the measurement of the open circuit reading by the trigger device.. . ... Seagate Technology Llc

04/16/15 / #20150103442

Magnetic head with integrated write driver

An apparatus and associated method generally relate to data writing and more specifically to writing data to a rotating media. An embodiment of such an apparatus comprises a slider body, a transducer and a write driver. ... Seagate Technology Llc

04/16/15 / #20150103439

Write pole with varying bevel angles

A magnetic element can have at least a write pole configured with a write pole tip that has a tip surface oriented at a first angle with respect to an air bearing surface (abs), a first bevel surface extending from the abs and oriented at a second angle with respect to the abs, and a second bevel surface extending from the abs and oriented at a third angle with respect to the abs. The first, second, and third angles may be configured to be different and non-orthogonal to each other.. ... Seagate Technology Llc

04/16/15 / #20150103438

Data reader with magnetic seed lamination

A magnetic element capable of reading data may generally be configured at least with a magnetic seed lamination disposed between a data reader stack and a magnetic shield. The magnetic seed lamination may be constructed at least with one magnetic layer coupled to the bottom shield and at least one non-magnetic layer decoupling the data reader stack from the at least one magnetic layer.. ... Seagate Technology Llc

04/16/15 / #20150103432

Methods and devices for head-media contact detection

In certain embodiments, a head-suspension assembly includes a resonator attached to either a head or gimbal. The resonator is configured to resonate at a predefined resonant frequency. ... Seagate Technology Llc

04/16/15 / #20150103430

Bond pad sharing for powering a multiplicity of electrical components

A bond pad set includes at least one ground pad and at least one electrical bond pad configured to bias and send/receive signals. The bond pad set is electrically connected to a multiplicity of electrical components. ... Seagate Technology Llc

04/09/15 / #20150100820

Protecting volatile data of a storage device in response to a state reset

. . An imminent state reset of a data storage device is detected. In response to determining volatile data of the data storage device could be lost in response to the state reset, the volatile data of the data storage device is stored to a backup memory of the data storage device together with first header data that facilitates recovering the volatile data. ... Seagate Technology Llc

04/09/15 / #20150099438

Universal carrier device and adaptive components for the carrier device

An assembly includes a carrier device having proximal and distal ends. The carrier device includes a workpiece platform along the proximal end. ... Seagate Technology Llc

04/09/15 / #20150099427

Slider level lapping carrier

A carrier may be configured and operated to engage a lapping plate with a plurality of physically separated sliders attached to a common adhesive of the carrier. The carrier can be constructed to have at least one finger adjacent to and capable of translating a single slider of the plurality of physically separated sliders.. ... Seagate Technology Llc

04/09/15 / #20150099426

Lapping device with lapping control feature and method

A head structure for a lapping assembly including a lapping control feature is disclosed. The lapping control feature includes a raised contact surface elevated from a front surface of the head structure of the lapping assembly. ... Seagate Technology Llc

04/09/15 / #20150098155

Magnetic sensor shield pinned by a high-coercivity ferromagnet

A magnetic sensor may generally be configured as a data reader capable of sensing data bits from an adjacent data storage medium. Various embodiments of a magnetic element may have at least a magnetic stack that contacts at least a first shield. ... Seagate Technology Llc

04/09/15 / #20150098152

Electrically insulating magnetic material for a read head

An apparatus such as a magnetic recording head with at least two separately addressable read transducers that are coplanar in a cross track direction. The apparatus includes first coplanar electrical contacts respectively disposed on and in electrical contact with first surfaces of the at least two read transducers and an electrically insulating magnetic material disposed between the electrical contacts.. ... Seagate Technology Llc

04/09/15 / #20150098151

Magnetic read head with separately addressable read transducers

A read head with at least two separately addressable read transducers that are coplanar in a cross track direction. The read transducers have a cross track width, wr, and a center-to-center separation distance between the two read transducers either greater than 3wr or the distance of two tracks of an associated medium in the cross track direction.. ... Seagate Technology Llc

04/02/15 / #20150093598

Magnetic stack including mgo-ti(on) interlayer

A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an mgo—ti(on) layer.. ... Seagate Technology Llc

04/02/15 / #20150093061

Apparatuses and methods having a bearing shield arrangement

Various aspects of the present disclosure are directed towards an apparatus/method including rolling elements, an outer ring surrounding an inner ring and the inner and outer rings guiding rotation of the rolling elements in a rotation region therebetween, and a cap secured to the inner ring. The apparatus further includes a bearing shield arrangement secured to one of the outer and inner rings and configured with the other of the outer and inner rings to define a gap for the flow of vapor or lubricant from the rotation region through a vapor restricting pathway.. ... Seagate Technology Llc

04/02/15 / #20150092288

Signal noise rejection

An implementation of a system disclosed herein provides a method of determining a frequency of baseline noise in a target or read sensor signal and rejecting a band of signals from the target or read sensor signal substantially around the frequency of the baseline noise, including devices to implement this method.. . ... Seagate Technology Llc

04/02/15 / #20150091475

Efficient energy recovery in disk drive during power loss

A back electromotive force of a rotating motor is converted into a voltage for a load by driving, in accordance with a duty cycle, at least one switching circuit that couples the back electromotive force to a load through a rectifying circuit. An error signal is generated that is a difference between the load voltage and a reference voltage. ... Seagate Technology Llc

03/26/15 / #20150089317

Storage device with multiple coding redundancies

A storage device is configured to utilize different encoding and decoding schemes in reading and writing data to different regions of a storage device based on the position of the storage regions and/or component-specific physical characteristics of the regions. Each encoding scheme may include multiple different types of encoders selected based an optimization process for each region.. ... Seagate Technology Llc

03/26/15 / #20150089278

Variable data recovery scheme hierarchy

Method and apparatus for managing data in a memory, such as a flash memory. In accordance with some embodiments, a memory has a plurality of solid-state non-volatile memory cells. ... Seagate Technology Llc

03/26/15 / #20150089119

Command execution using existing address information

Method and apparatus for managing data in a memory, such as a flash memory. In accordance with some embodiments, a memory module has a plurality of solid-state non-volatile memory cells. ... Seagate Technology Llc

03/26/15 / #20150089109

Data storage system with pre-boot interface

A data storage system and associated method of using may generally have at least a data storage device that has independent first and second interfaces respectively connecting the data storage device to a host controller and an auxiliary controller. The auxiliary controller can be configured to provide system information to the data storage device prior to a synchronized connection being established between the data storage device and the host controller.. ... Seagate Technology Llc

03/26/15 / #20150085632

Detection and remediation of head contamination

A heat generating component of a slider is energized at a predetermined frequency. The heat generating component changes a spacing between a medium and the slider. ... Seagate Technology Llc

03/26/15 / #20150085630

Multi-purpose near-field transducer having a temperature coefficient of resistance

An apparatus includes a writer, an arrangement comprising a plasmonic near-field transducer (nft) adjacent the writer and comprising a material having a temperature coefficient of resistance (tcr), and a lead arrangement connected to the nft arrangement. In some configurations, the nft arrangement includes a heat sink, and the lead arrangement is connected to the heat sink. ... Seagate Technology Llc

03/26/15 / #20150085402

Varying data writer side shield gap distal the abs

A data writing element may be configured at least with a write pole positioned adjacent a first shield along a first axis and adjacent a second shield along a second axis. The second shield may be separated from the write pole by a first gap distance on an air bearing surface (abs) and by a second gap distance distal the abs with the first and second gap distances meeting at a transition surface oriented parallel to the abs.. ... Seagate Technology Llc

03/26/15 / #20150085400

Baseplate resonant axis optimization

In one implementation, the presently disclosed technology teaches an apparatus with a head attached to an end of a baseplate. The baseplate includes a tilted section that causes a torsion axis of the baseplate to pass near the head. ... Seagate Technology Llc

03/26/15 / #20150084624

Magnetoresistive sensor

Implementations disclosed herein allow a signal detected by a magnetoresistive (mr) sensor to be improved by providing for one or more alloyed layers that each include a ferromagnetic material and a refractory material. The alloyed layers are provided adjacent to a shield element or between soft magnetic layers of the sensor stack.. ... Seagate Technology Llc

03/26/15 / #20150084552

Energy transfer between data storage devices with moving parts

A system that includes a first data storage element actuated by a first electric motor. The system also includes a second data storage element actuated by a second electric motor. ... Seagate Technology Llc

03/26/15 / #20150083601

Near field transducers including electrodeposited plasmonic materials and methods of forming

Methods of forming near field transducers (nfts) including electrodepositing a plasmonic material.. . ... Seagate Technology Llc

03/26/15 / #20150082650

Row bar thickness measurement device, system and methods

A device and system for precise measurement of a thickness and determination of a profile of a slider row bar. The device includes a bar mount fixture having a structure for supporting the row bar by an edge, a first probe and a second probe on either side of the row bar, each probe being a non-contact sensor with a measurement precision of 0.5 micrometer, with each of the probes laterally moveable in relation to the bar mount fixture. ... Seagate Technology Llc

03/19/15 / #20150081970

Storage system control using a multi-path expander

Apparatus and method for controlling the storage of data in a multi-device storage system. In some embodiments, a storage system includes an expander coupled to a controller via multiple parallel data channel pathways, and a plurality of data storage devices coupled to the expander. ... Seagate Technology Llc

03/19/15 / #20150078146

Solid immersion mirror with fill material between inner and outer sidewalls

An apparatus includes a solid immersion mirror with opposing, reflective, inner sidewalls having inner surfaces facing a focal region and outer surfaces opposite the inner surfaces. The solid immersion mirror also include opposing outer sidewalls spaced apart from and facing the outer surfaces of the inner sidewalls, and a fill material between the inner sidewalls and outer sidewalls. ... Seagate Technology Llc

03/19/15 / #20150077882

Reader structure

Implementations described and claimed herein provide a synthetic antiferromagnetic (saf) layer with canted pinning, wherein a down-track direction facing surface of the saf layer has edges that are substantially parallel to pinning direction of the saf layer.. . ... Seagate Technology Llc

03/19/15 / #20150077877

Enlarged substrate for magnetic recording medium

An enlarged substrate for a magnetic recording medium used in a data storage device such as a hard disc drive (hdd). In some embodiments, an apparatus includes a substrate for a magnetic recording disc for installation in a 3½ inch form factor hard disc drive, the substrate having an overall diameter of nominally from 96.9 mm to 100.4 mm. ... Seagate Technology Llc

03/19/15 / #20150077148

Work piece contact pad with centering feature

A data storage device may be tested during or after manufacture by a testing device that may have at least a work piece with at least one contact pad concurrently contacting bottom and sidewall surfaces of a probe tip with a centering feature of the at least one contact pad.. . ... Seagate Technology Llc

03/12/15 / #20150074677

Load adaptive pipeline

A load adaptive pipeline system includes a data recovery pipeline configured to transfer data between a memory and a host. The pipeline includes a plurality of resources, one or more of the plurality of resources in the pipeline have multiple resource components available for allocation. ... Seagate Technology Llc

03/12/15 / #20150074488

Dynamic distribution of code words among multiple decoders

A device comprising a data transfer channel is configured to transfer data between multiple memory devices and a host device. The channel includes multiple decoders and a buffer coupled between the multiple memory devices and the multiple decoders. ... Seagate Technology Llc

03/12/15 / #20150074487

Memory device with variable code rate

Method and apparatus for managing data in a memory, such as a flash memory. In accordance with some embodiments, the apparatus has a solid-state non-volatile memory and a processing circuit configured to write data to a selected location of the memory. ... Seagate Technology Llc

03/12/15 / #20150074486

Transfer unit management

Method and apparatus for managing data in a memory, such as a flash memory. In accordance with some embodiments, a non-volatile memory is arranged into a plurality of blocks, with each of the blocks constituting an integral plural number n of fixed-sized, multi-bit transfer units. ... Seagate Technology Llc

03/12/15 / #20150074340

Electronic device data distribution

A non-transitory computer-readable storage medium may include instructions that cause a system to perform operations, the operations may include receiving an operation associated with data and managing storage of the data on a first storage medium of an electronic device and in a cache on a second storage medium of the electronic device based on the operation and a cache policy. The cache policy may be based on one or more characteristics of the data that include a duration since a previous access of the data.. ... Seagate Technology Llc

03/12/15 / #20150072593

Apparatus including electrical lapping guide and methods of using the same

An electrical lapping guide has a body with a thickness along a wafer axis, the body comprising a layer of conductive material having a resistivity. The conductive material layer comprises a first contact region and a second contact region, the first and second contact regions configured to electrically connect the electrical lapping guide to electrical leads. ... Seagate Technology Llc

03/12/15 / #20150071045

Apparatuses and methods for controlling near-field transducer to write pole spacing

An apparatus includes a waveguide and a near-field transducer adjacent the waveguide. The near-field transducer includes an enlarged region and a peg region extending from the enlarged region towards an air bearing surface. ... Seagate Technology Llc

03/12/15 / #20150070800

Injector stack with diffusive layer

A data reader may be configured at least with detector and injector stacks that each has a common spin accumulation layer. The detector stack may positioned on an air bearing surface (abs) while the injector stack is positioned distal the abs. ... Seagate Technology Llc

03/12/15 / #20150070799

Depolarizing layer in a magnetic stack

A data reader may be configured at least with a magnetic stack positioned on an air bearing surface (abs) and contacting a spin depolarizing layer that is a minority spin current carrier. The spin depolarizing layer can have a thickness and spin diffusion length corresponding to a net zero spin polarization at an interface of the magnetic stack and spin depolarizing layer.. ... Seagate Technology Llc

03/05/15 / #20150064365

Methods of forming films

A method of forming a layer, the method including providing a feedstock, the feedstock including a first component and a second component; ionizing at least part of the feedstock thereby forming a plasma, wherein the plasma includes constituents selected from: the first component, derivatives of the first component, ions of the first component, ions of derivatives of the first component, the second component, derivatives of the second component, ions of the second component, ions of derivatives of the second component, or combinations thereof, and wherein the individual identities, individual ratios, total quantities, or any combination thereof of the first and second component in the feedstock can modulate the makeup of the plasma; forming a beam from the plasma; and forming a layer from the beam, wherein the layer includes at least some portion of at least the first or the second component.. . ... Seagate Technology Llc

03/05/15 / #20150063087

Peg height of near-field transducers

A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a hamr magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. ... Seagate Technology Llc

03/05/15 / #20150063086

Magnetic adhesion layer and method of forming same

A device having an air bearing surface and a method of forming the device are disclosed. The device can include a writer portion including a surface at the air bearing surface of the device, a magnetic adhesion layer disposed proximate at least a portion of the surface of the writer portion, and an overcoat disposed proximate at least a portion of the magnetic adhesion layer such that the magnetic adhesion layer is between the at least a portion of the surface of the writer portion and the overcoat.. ... Seagate Technology Llc

03/05/15 / #20150062757

Magnetic stack with different areal extents on an air bearing surface

A data reader may be configured at least with a magnetic stack that has a first magnetic layer separated from a second magnetic layer by a non-magnetic spacer layer. The first magnetic layer may have an areal extent on an air bearing surface (abs) that differs from the second magnetic layer while the second magnetic layer can be configured with a first plurality of linear sidewalls that are each angled with respect to a second plurality of linear sidewalls of the first magnetic layer.. ... Seagate Technology Llc

03/05/15 / #20150062756

Reader structure

An apparatus disclosed herein comprises a reader structure having a sensor stack and a bottom shield having a first end and a second end on opposite sides of the bottom shield in a cross-track direction, wherein the first end is formed by intersection of arcs.. . ... Seagate Technology Llc

03/05/15 / #20150062755

Dual reader structure

Implementations described and claimed herein provide a dual reader wherein a bottom shield is attached to side shields.. . ... Seagate Technology Llc

03/05/15 / #20150062754

Writer core incorporating thermal sensor having a temperature coefficient of resistance

A writer core of a transducer is configured to interact with a magnetic recording medium and comprises an upper core and a lower core. At least one of the upper and lower cores comprises a return pole having a return shield. ... Seagate Technology Llc

03/05/15 / #20150062746

In-situ lapping plate mapping device

A device and associated method of use can have at least an object with a work surface that contacts a lapping surface of a tool. Topography of the lapping surface can be mapped in-situ by an adjacent sensor array and the topography stored in a memory. ... Seagate Technology Llc

03/05/15 / #20150062736

Cache data management for program execution

Implementations disclosed herein provide for sequential readback of program data in from a cached data region of a storage device. In particular, the disclosed technology provides for storing a sequence of logical addresses associated with execution of a program, the sequence of logical addresses including at least two consecutive logical addresses associated with non-consecutive data blocks in a user data region; writing data corresponding to the at least two consecutive logical addresses to sequential data blocks in a cached data region; determining that a sequence of read commands from a host computer is associated with the data; and reading the data from the cached data region.. ... Seagate Technology Llc

03/05/15 / #20150062735

Dual reader structure

Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack wherein the bottom sensor stack and the top sensor stack are mirrored along a down-track direction.. . ... Seagate Technology Llc

03/05/15 / #20150061469

Spot welds aligning motor components

Provided herein, is an apparatus that includes a first weld attaching a first motor component and a second motor component, a second weld attaching the first motor component and the second motor component, and a plurality of spot welds along a joint between the first and second weld wherein the plurality of spot welds are configured to align the first motor component and the second motor component.. . ... Seagate Technology Llc

03/05/15 / #20150061438

Magnet co-formed to back iron

An apparatus includes a hub. The apparatus also includes a back iron that is coupled to the hub. ... Seagate Technology Llc

02/26/15 / #20150058683

Retention based defecting in a hybrid memory system

A first page in a memory unit is programmed with one or more pages of the secondary memory. A first time corresponding to the start of the programming of the first page is recorded. ... Seagate Technology Llc

02/26/15 / #20150058638

Data transcription in a data storage device

A method of protecting information in a data storage device is provided. The method includes receiving, in the data storage device, encrypted data via a host computer in which the data storage device is employed. ... Seagate Technology Llc

02/26/15 / #20150058527

Hybrid memory with associative cache

A hybrid memory system includes a primary memory comprising a host memory space arranged as memory sectors corresponding to host logical block addresses (host lbas). A secondary memory is implemented as a cache for the primary host memory. ... Seagate Technology Llc

02/26/15 / #20150058526

Memory access requests in hybrid memory system

Incoming memory access requests are routed in a set of incoming queues, the incoming memory access requests comprise a range of host logical block addresses (lbas) that correspond to a memory space of a primary memory. The host lba range is directly mapped to clusters of secondary memory, the secondary memory corresponding to a memory space of a secondary memory. ... Seagate Technology Llc

02/26/15 / #20150058525

Garbage collection in hybrid memory system

A hybrid memory system includes a primary memory and a secondary memory. A garbage collection operation is performed on the hybrid memory system. ... Seagate Technology Llc

02/26/15 / #20150055441

Magnetic device including a near field transducer

A recording device and a method of forming a recording device are disclosed. The recording device includes an air bearing surface and a near field transducer including a surface proximate the air bearing surface. ... Seagate Technology Llc

02/26/15 / #20150055307

Windowed reference planes for embedded conductors

A rigid multi-layer printed circuit board (pcb) has an embedded elongated conductor between opposing first and second reference planes. The first and second reference planes are formed of conductive material and are electrically isolated from the conductor by intervening insulative material. ... Seagate Technology Llc

02/26/15 / #20150055251

Reader structure

An apparatus disclosed herein includes a sensor with a free layer having cross-track easy axis anisotropy.. . ... Seagate Technology Llc

02/19/15 / #20150052416

Determining data retention time in a solid-state non-volatile memory

Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with some embodiments, a test pattern is written to a selected block of solid-state non-volatile memory cells. ... Seagate Technology Llc

02/19/15 / #20150052370

Cascaded data encryption dependent on attributes of physical memory

Apparatus and method for providing data security through cascaded encryption. In accordance with various embodiments, input data are encrypted in relation to a first auxiliary data value to provide first level ciphertext. ... Seagate Technology Llc

02/19/15 / #20150049595

Slider for magnetic recording apparatus with projection comprising optical turning element and methods of fabrication thereof

An apparatus includes a slider, a light source disposed upon an outer surface of the slider and a projection extending above the outer surface of the slider. The light source comprises a resonant cavity aligned with the outer surface of the slider. ... Seagate Technology Llc

02/19/15 / #20150048698

Component configured to stiffen an electric motor assembly

An apparatus includes a first component and a second component. The second component is located at a first position. ... Seagate Technology Llc

02/12/15 / #20150046747

Torn write mitigation

Torn write mitigation circuitry determines if a write operation to memory is in progress at or about a time of power loss. In response to the write operation being in progress at or about the time of the power loss, the torn write mitigation circuitry causes torn write data and metadata to be stored to a non-volatile cache. ... Seagate Technology Llc

02/12/15 / #20150043877

Optical devices including assistant layers

A waveguide including a top cladding layer, the top cladding layer including a material having an index of refraction, n1; an assistant layer, the assistant layer positioned adjacent the top cladding layer, the assistant layer including a material having an index of refraction, n2; a core layer, the core layer positioned adjacent the assistant layer, the core layer including a material having an index of refraction, n3; and a bottom cladding layer, the bottom cladding layer positioned adjacent the core layer, the bottom cladding layer including a material having an index of refraction, n4, wherein n1 is less than both n2 and n3, n3 is greater than n1 and n4, and n4 is less than n3 and n2.. . ... Seagate Technology Llc

02/12/15 / #20150043317

Grating based laser and power monitor for a heat-assisted magnetic recording device

A head assembly includes a submount, a body with a first surface, an optical path, a near field transducer (nft), a sensor, and a laser. The optical path is disposed in the body and is adapted to receive light and convey the light to a distal end of the waveguide. ... Seagate Technology Llc

02/12/15 / #20150043316

Apparatus with a plurality of heat sinks

An apparatus comprises a write transducer comprising a write pole having a tip portion proximate a media-facing surface and a return pole spaced apart from the write pole in a downtrack direction. The apparatus further includes first and second heat sink portions. ... Seagate Technology Llc

02/12/15 / #20150043315

Near-field transducer with enlarged region, peg region, and heat sink region

A near-field transducer includes an enlarged region having a top side adjacent to a magnetic pole, a base side opposite the top side, and a circumference that extends from proximal to a media-facing surface to distal to a media-facing surface. The near-field transducer includes a peg region in contact with a region of the bas side of the enlarged region, the peg region extending from the enlarged region towards the media-facing surface. ... Seagate Technology Llc

02/12/15 / #20150043107

Data reader with horizontal lamination shield

A data storage device may be constructed to sense data bits with at least a magnetic stack contacting a shield that has a horizontal lamination of magnetic and non-magnetic layers. The magnetic layer may be configured with a first width at an air bearing surface (abs) that defines a first aspect ratio and a different second width that defines a different second aspect ratio distal the abs.. ... Seagate Technology Llc

02/12/15 / #20150043100

Storing random and sequential data on different track widths of a recording medium

Host data to be written to a recording medium is categorized as one of sequential data or random data. The sequential data is written to a first track width on the recording medium. ... Seagate Technology Llc

02/12/15 / #20150043098

Multi-sensor data transducer

Method and apparatus for decoding data, such as from a rotatable magnetic recording medium. In accordance with some embodiments, a plurality of sensors is provided, with each sensor configured to generate a sense signal from an adjacent pattern. ... Seagate Technology Llc

02/12/15 / #20150041523

Method and apparatus for aligning a laser to a waveguide

An apparatus includes a slider structure having a waveguide and a cavity configured to align a laser to the waveguide. The cavity includes a plurality of solder bumps on a bottom of the cavity configured to electrically and thermally couple the laser to the slider. ... Seagate Technology Llc

02/12/15 / #20150041429

Integrated tool for fabricating an electronic component

A tool for use in fabricating an electronic component includes a plurality of processing modules and a transfer chamber in communication with each of the plurality of processing modules. The transfer chamber includes a component for transferring a structure to each of the plurality of processing modules. ... Seagate Technology Llc

02/12/15 / #20150040380

Slider edge features

A slider comprising a body having an air bearing surface (abs), wherein the abs extends between a leading edge and a trailing edge of the body. The slider comprises a transducer supported by the body and positioned near the trailing edge, wherein the transducer comprises a pole tip partially extending from the body. ... Seagate Technology Llc

02/05/15 / #20150039825

Federated tiering management

Apparatus and methods are described for dynamically moving data between tiers of mass storage devices responsive to at least some of the mass storage devices providing information identifying which data are candidates to be moved between the tiers.. . ... Seagate Technology Llc

02/05/15 / #20150039101

Using friction compensation modeling to move a control project

Apparatus and method for moving a control object, such as but not limited to a data read/write transducer adjacent a rotatable magnetic recording medium in a data storage system. In accordance with some embodiments, a compensation value is calculated for a baseline friction model which predicts friction in a positioning system. ... Seagate Technology Llc

02/05/15 / #20150037613

Magnetic devices with overcoats

A magnetic device including a magnetic writer; and an overcoat positioned over at least the magnetic writer, the overcoat including tantalum oxide (tayox), where y ranges from about 1 to 2 and x ranges from about 2 to 5, or mixtures thereof.. . ... Seagate Technology Llc

02/05/15 / #20150036469

Laser optical power monitoring using thermal sensor of a head transducer

A light source is configured to produce light, a waveguide is optically coupled to the light source and configured to direct the light to an intended focus location, and a slider is configured to use the light as an energy source for heating a region of a magnetic recording medium. A thermal sensor is situated on the slider at a location outside of a light path that includes the intended focus location. ... Seagate Technology Llc

02/05/15 / #20150036467

Capping method for laser diode protection

An apparatus includes a slider with a cavity in a trailing end of the slider. A laser is positioned in the cavity and has an output facet positioned adjacent to a first wall of the cavity. ... Seagate Technology Llc

02/05/15 / #20150036246

Magnetoresistive sensor shield

Implementations disclosed herein allow a signal detected by a magnetoresistive (mr) sensor to be improved by providing for a region of reduced anisotropy within a synthetic antiferromagnetic (saf) shield. The saf shield includes first and second layers of ferromagnetic material separated by a coupling spacer layer. ... Seagate Technology Llc

02/05/15 / #20150036245

Magnetoresistive sensor

An apparatus disclosed herein comprises a magnetically free layer and a bottom shield, wherein a first portion of the bottom shield substantially adjacent the free layer is pinned perpendicular to an air-bearing surface (abs) of the apparatus and a second portion of the bottom shield not substantially adjacent the free layer is pinned parallel to the abs of the apparatus.. . ... Seagate Technology Llc

02/05/15 / #20150036137

Alignment of optical components

Alignment of a near field transducer (nft) optical input coupler and a light emitting device involves providing excitation radiation from an excitation light source through an optical input coupler to the nft and filtering output radiation from the nft using a short wavelength pass optical filter. The optical input coupler is scanned through multiple positions while the photoluminescent radiation is detected. ... Seagate Technology Llc

02/05/15 / #20150034526

Slider cleaning and carrier tray

A tray for retaining sliders, such as during washing and/or transporting process steps. The tray has a planar body comprising a top surface having a plurality of cavities therein, an opposite bottom surface having a plurality of recesses therein, and a perimeter. ... Seagate Technology Llc

02/05/15 / #20150034494

Electro-chemically machining with a motor part including an electrode

A method includes rotating a first motor part around a first structure substantially similar to a second motor part. The method also includes applying a first current to the first structure to electro-chemically machine the first motor part.. ... Seagate Technology Llc

01/29/15 / #20150033066

Partial write error recovery

A data storage device may have at least a qualifier circuit that is configured to recognize a write error during a write operation for a single user data sector on a data storage medium and resume the write operation from the location of the write error by skipping at least one user data sub-sector to provide multiple separate original user data sub-sectors that collectively form the single user data sector.. . ... Seagate Technology Llc

01/29/15 / #20150030887

Magnetic devices with molecular overcoats

A data storage device including a substrate; a magnetic structure deposited on the substrate; and a molecular overcoat deposited on the magnetic structure, the molecular overcoat having a thickness of not greater than about 100 Å.. . ... Seagate Technology Llc

01/29/15 / #20150029613

Pin-efficient reader bias enable control

Systems and methods are included for determining a presence of an upcoming reading field during a write mode of a storage device, and initiating a read-while write (rww) mode of the storage device in response to the sensed reading field. Initiating the rww mode comprises warming up the reader circuitry, generating a signal in response to an end to the write operation, and activating reader bias current in response to the generated signal.. ... Seagate Technology Llc

01/22/15 / #20150026228

User invisible device diagnostic region in a distributed data storage network

A data storage system may generally have a controller connected to multiple separate data storage devices in a distributed network. Each data storage device may be configured with a user invisible diagnostic region where diagnostic information is stored in logical block addresses (lba) beyond a storage capacity of the respective data storage devices and the diagnostic information can be accessible via read and write requests to lba beyond the storage capacity of the respective data storage devices.. ... Seagate Technology Llc

01/22/15 / #20150025821

Data storage device and system having adaptive brownout detection

Technologies are described herein for adaptive brownout detection and mitigation in a storage device having rotational storage media. A target position on the rotational storage media for a current write operation is received. ... Seagate Technology Llc

01/22/15 / #20150025674

Coordinating end effector and vision controls

An apparatus and associated methodology providing a processor-controlled end effector that is selectively moveable according to end effector coordinates. A camera is positioned to detect objects according to camera coordinates that overlap the end effector coordinates. ... Seagate Technology Llc

01/22/15 / #20150023097

Partial reprogramming of solid-state non-volatile memory cells

Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with some embodiments, data are written to a set of solid-state non-volatile memory cells so that each memory cell in the set is written to an associated initial programmed state. ... Seagate Technology Llc

01/22/15 / #20150022918

Request management for rotating data storage media

A data storage system and associated method of use may generally be directed to a memory cache that stores a plurality of pending read and write requests. A processor can be configured to prioritize the read requests in the memory cache in response to a sensed acoustic or mechanical vibration in a data storage medium.. ... Seagate Technology Llc

01/22/15 / #20150020379

Process to inhibit slider contamination during processing

Methods for forming a slider for a disc drive. One method includes forming a plurality of sliders on a wafer, applying a self-assembled monolayer coating on the plurality of sliders, and cutting the plurality of sliders into a plurality of individual sliders. ... Seagate Technology Llc

01/15/15 / #20150019830

Dynamic address mapping for finish in the field

Implementations disclosed herein provide for dynamically mapping logical block addresses (lba) of unfinished data blocks to unused data blocks during an in-the-field finishing process of a storage medium. Such dynamic mapping creates an impression that the storage medium operates at an advertised capacity before the effective capacity is equal to the advertised capacity.. ... Seagate Technology Llc

01/15/15 / #20150017883

Method and assembly for grinding and/or cutting a slider bar on a lapping carrier

One or more slider bars are attached to at least one component of a multi-component carrier device. The multi-component carrier device is attached to a lapping arm of a lapping machine and the one or more slider bars attached to the carrier device are lapped. ... Seagate Technology Llc

01/15/15 / #20150017483

Method of fabrication of an anisotropy magnetic layer of a patterned stack

Provided herein is a method including oxidizing tops of features of a patterned magnetic layer to form oxidized tops of the features; removing an excess of an applied first protective material down to at least the oxidized tops of the features to form a planarized layer; and applying a second protective material over the planarized layer.. . ... Seagate Technology Llc

01/15/15 / #20150017482

Method for fabricating plasmonic cladding

The embodiments disclose a plasmonic cladding structure including at least one conformal plasmonic cladding structure wrapped around plural stack features of a recording device, wherein the conformal plasmonic cladding structure is configured to create a near-field transducer in close proximity to a recording head of the recording device, at least one conformal plasmonic cladding structure with substantially removed top surfaces of the stack features with exposed magnetic layer materials and a thermally insulating filler configured to be located between the stack features.. . ... Seagate Technology Llc

01/15/15 / #20150017481

Bit patterned growth guiding mechanism

The embodiments disclose a structure, including a first layer selectively etched on a substrate with a seedlayer deposited thereon, a first layer bit patterned growth guiding mechanism on the seedlayer, and a plurality of bit patterned magnetic recording features grown on the seedlayer guided by the growth guiding mechanism.. . ... Seagate Technology Llc

01/15/15 / #20150016774

Method for regulating patterned plasmonic underlayer

The embodiments disclose a stack feature of a stack configured to confine optical fields within and to a patterned plasmonic underlayer in the stack configured to guide light from a light source to regulate optical coupling.. . ... Seagate Technology Llc

01/15/15 / #20150016238

Plasmonic waveguide with an angled, elongated portion

An apparatus includes an input region having a high-refractive-index material and an input surface configured to receive light emitted from a laser. An output surface of the apparatus is configured to deliver energy to a recording medium. ... Seagate Technology Llc

01/15/15 / #20150016237

Method for fabricating a patterned composite structure

The embodiments disclose a patterned composite magnetic layer structure configured to use magnetic materials having differing temperature and magnetization characteristics in a recording device, wherein the patterned composite magnetic layer structure includes magnetic layers, at least one first magnetic material configured to be used in a particular order to reduce a recording temperature and configured to control and regulate coupling and decoupling of the magnetic layers and at least one second magnetic material with differing temperature characteristics is configured to control recording and erasing of data.. . ... Seagate Technology Llc

01/15/15 / #20150016234

Plasmonic funnel for focused optical delivery to a metallic medium

An apparatus includes a transducer including a plasmonic funnel having first and second ends with the first end having a smaller cross-sectional area than the second end, and a first section positioned adjacent to the first end of the plasmonic funnel, and a first waveguide having a core, positioned to cause light in the core to excite surface plasmons on the transducer.. . ... Seagate Technology Llc

01/15/15 / #20150015996

Slider with self-assembled monolayer pattern

A slider, having a leading edge, a trailing edge, a working surface, and read/write heads proximate the trailing edge. The slider includes a protective overcoat over the working surface of the slider, and a self-assembled monolayer coating on the working surface of the slider and over the protective overcoat, the coating comprising at least one self-assembled monolayer material.. ... Seagate Technology Llc

01/15/15 / #20150015989

Air bearing surface having temperature/humidity compensation feature

A slider for a head to read data from or write data to a magnetic media is disclosed. The slider includes an air bearing surface including raised bearing surface(s) elevated above recessed bearing surface(s) to pressurize air flow along the air bearing surface to provide a fly height for the slider above the media. ... Seagate Technology Llc

01/15/15 / #20150015983

Size adjustable inter-track interference cancellation

Technologies are described herein for cancelling inter-track interference in a storage device utilizing size-adjustable segments. Data is read from one or more sectors on a data track adjacent to a target sector on a target track of a recording medium of the storage device. ... Seagate Technology Llc

01/15/15 / #20150015353

Initialization of magnetic features

The embodiments disclose an alternating current (ac) erase process configured to cancel out existing polarity of stack magnetic features on both sides of the stack and an ac reset process configured to initialize the polarity of the device stack magnetic features of both sides of a stack configured to create a uniform polarity.. . ... Seagate Technology Llc

01/15/15 / #20150014174

Perpendicular write head with laminated side shields

A perpendicular write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing side, a leading side that is opposite the trailing side, and first and second sides; side gaps, wherein the side gaps are proximate the write pole along the first and second side edges; and side shields proximate the side gaps, wherein the side shields have gap facing surfaces and include at least one set of alternating layers of magnetic and non-magnetic materials, wherein only one kind of material makes up the gap facing surfaces at the air bearing surfaces.. . ... Seagate Technology Llc

01/15/15 / #20150013946

Method for fabricating patterned gradient heat sinks

The embodiments disclose at least one predetermined patterned layer configured to eliminate a physical path of lateral thermal bloom in a recording device, at least one gradient layer coupled to the patterned layer and configured to use materials with predetermined thermal conductivity for controlling a rate of dissipation and a path coupled to the gradient layer and configured to create a path of least thermal conduction resistance for directing dissipation along the path, wherein the path substantially regulates and prevents lateral thermal bloom.. . ... Seagate Technology Llc

01/08/15 / #20150011062

Three dimensional floating gate nand memory

Memory arrays that include a first memory cell having a channel; a first insulator; a floating gate; a second insulator; and a control gate, wherein the first insulator is positioned between the channel and the floating gate, the second insulator is positioned between the floating gate and the control gate; and a second memory cell having a channel; a first insulator; a floating gate; a second insulator; and a control gate, wherein the first insulator is positioned between the channel and the floating gate, the second insulator is positioned between the floating gate and the control gate, wherein the first memory cell and the second memory cell are positioned parallel to each other.. . ... Seagate Technology Llc

01/08/15 / #20150009789

Hard disc drive cover seal

Certain embodiments of the present disclosure include a hard disc drive housing comprising a baseplate having a bottom portion and walls extending from a perimeter of the bottom portion, the walls including a clearance area; a cover that includes a planar interface surface with the baseplate, the interface surface having a width that exceeds the baseplate wall thickness in the clearance area; and a gasket configured to be compressed between the baseplate and the cover at the interface surface.. . ... Seagate Technology Llc

01/08/15 / #20150009787

Variable bit aspect ratios in magnetic media

An apparatus comprises a write transducer, an energy source, and a controller. The write transducer is configured to write data to a magnetic recording medium, and the energy source is configured to heat the magnetic recording medium while it is being written to by the write transducer. ... Seagate Technology Llc

01/08/15 / #20150007430

Lapping carrier

Implementations disclosed herein allow a printed circuit board (pcb) to be removeably secured to a lapping carrier. The lapping carrier may include a clamping mechanism and one or more alignment pins that thread through corresponding holes in the pcb. ... Seagate Technology Llc

01/01/15 / #20150006985

Data sector sync mark with multiple patterns

A data storage device may be configured with at least one data sector sync mark. Various embodiments are generally directed to a data sector having a sync mark and stored on a data storage medium with the sync mark having either a first or second patterns and a sync circuit configured to distinguish between the two different patterns to identify a status of at least some other portion of the data sector.. ... Seagate Technology Llc

01/01/15 / #20150003223

Sensing temperature at a slider protrusion region

An apparatus includes a near-field transducer at or near an air bearing surface of the apparatus. A write pole is disposed at or near the air bearing surface and proximate the near-field transducer, respectively. ... Seagate Technology Llc

01/01/15 / #20150003222

Clearance sensor and circuitry using adjustable channel parameters

A transducer is configured to interact with a magnetic storage medium, a first channel comprises a first sensor and first circuitry configured to adjust a plurality of first channel parameters, and a second channel comprises a second sensor and second circuitry configured to adjust a plurality of second channel parameters. The first and second channel parameters are independently adjustable by the first and second circuitry, respectively. ... Seagate Technology Llc

01/01/15 / #20150003221

Time-multiplexed single input single output (siso) data recovery channel

Apparatus and method for recovering data from a multi-channel input signal, such as but not limited to a readback signal from a bit patterned medium (bpm) having a plurality of subtracks. In accordance with some embodiments, a single input single output (siso) equalizer is adapted to generate equalized outputs responsive to alternating subchannels of the multi-channel input signal. ... Seagate Technology Llc

01/01/15 / #20150003220

Submount layers configured to enhance absorption of light proximate a bonding feature

An apparatus includes a submount having a mounting surface and a top surface opposite the mounting surface. A slider has a bonding feature that interfaces with the mounting surface of the submount, and two or more layers are disposed between the mounting surface of the submount and the bonding feature. ... Seagate Technology Llc

01/01/15 / #20150003218

Trenched near-field transducer for heat assisted magnetic recording

A near-field transducer includes an enlarged transducer portion of plasmonic material extending from an input end to an output end, a surface of the transducer portion including a trench running between two raised portions of the plasmonic material, the trench extending at least partially from the input end to the output end. A peg of the plasmonic material is disposed on the output end of the transducer portion and extends from the output end toward the air bearing surface of a heat assisted magnetic recording slider.. ... Seagate Technology Llc

01/01/15 / #20150002964

Reader structure

An apparatus disclosed herein includes a sensor stack including a first layer and a barrier layer, wherein the barrier layer is in contact with a bottom shield.. . ... Seagate Technology Llc

01/01/15 / #20150002963

Write gap structure for a magnetic recording head

The present application relates to a write gap structure for a magnetic recording head. In illustrated embodiments, the write gap structure includes multiple write gap segments along a beveled pole tip surface between a top edge and a bottom edge of the beveled pole tip surface to provide a narrow write gap proximate to the air bearing surface and a larger write gap behind the air bearing surface. ... Seagate Technology Llc

01/01/15 / #20150002962

Magnetoresistive sensor

An apparatus disclosed herein includes a sensor stack including a first layer and an afm stabilized bottom shield in proximity to the first layer, wherein the afm stabilized bottom shield is magnetically coupled to the first layer.. . ... Seagate Technology Llc

01/01/15 / #20150002960

Disc drive with magnetic self-assembled monolayer

A magnetic data storage drive that includes a self-assembled monolayer having a magnetic function. The drive comprises a magnetic data storage medium having a magnetic surface, a slider having a working surface, the slider positioned and configured to detect magnetic fields from the magnetic surface of the medium, and a self-assembled monolayer between the magnetic surface and the working surface, the self-assembled monolayer having a magnetic function to reduce dispersion of magnetic fields from the magnetic surface of the medium to the working surface of the slider.. ... Seagate Technology Llc

01/01/15 / #20150002959

Data writer with flux density insert

A data writer may be generally configured at least with a write pole adjacent to and separated from a side shield and a trailing shield. The side shield may be formed of a first material and configured with a trailing box region that is at least partially filled with a flux density insert formed of a second material that is different than the first material.. ... Seagate Technology Llc

01/01/15 / #20150000202

Method for forming an abrasive lapping plate

A method of forming a lapping plate. The method includes providing a lapping plate having a surface, spraying an adhesive onto the surface, spraying a slurry of abrasive particles and solvent onto the adhesive, and curing the adhesive to form an abrasive coating on the lapping plate. ... Seagate Technology Llc








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