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Realtek Semiconductor Corporation patents (2016 archive)


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "R" | Realtek Semiconductor Corporation-related inventors


Wide dynamic range imaging method

A method for wide dynamic range imaging is illustrated. A region mapping operation having steps as follows is applied to an image using a plurality of region mapping curves for compensating different luminance associated with a plurality of regions in the image. ... Realtek Semiconductor Corporation

Ssic device and link control method for ssic device

An ssic (superspeed inter-chip) device comprises a detecting circuit operable to execute at least one of a first and a second detection processes and generate a detection result, wherein the first detection process is operable to detect an ssic compatible object and the second detection process is operable to detect whether the ssic compatible object satisfies at least one of a de-link state and a re-link state, a control circuit operable to generate a control signal according to the detection result, and a mobile-physical-layer circuit operable to execute at least one of the following steps: if the control signal indicates that the ssic compatible object is detected and satisfies the de-link state, disconnecting a normal connection between the ssic device and the ssic host; and if the control signal indicates that the ssic compatible object is detected and satisfies the re-link state, connecting the ssic device with the ssic host.. . ... Realtek Semiconductor Corporation

Burst mode clock data recovery device and method thereof

A burst mode clock data recovery device includes a clock data recovery loop, a frequency tracking loop, a frequency tracking loop, and a fast-locking unit. The clock data recovery loop receives a sampling clock signal and a data signal and uses the sampling clock signal to lock the data signal to generate a recovery clock signal. ... Realtek Semiconductor Corporation

Method and apparatus for charge transfer

A circuit comprises: a first capacitor; a second capacitor; a mos (metal oxide semiconductor) transistor; and an operational amplifier, wherein the first capacitor is configured to couple to the second capacitor via the mos transistor; the operational amplifier is configured to receive a voltage at the first capacitor and output a control voltage; and the mos transistor is configured to be controlled by the control voltage.. . ... Realtek Semiconductor Corporation

Inductor device

An inductor device includes a conductor and a connector. The conductor includes a first ring-type structure and a second ring-type structure. ... Realtek Semiconductor Corporation

Structure of integrated inductor

This invention discloses a structure of an integrated inductor, comprising: an outer metal segment which comprises a first metal sub-segment and a second metal sub-segment; an inner metal segment which is arranged inside an area surrounded by the outer metal segment and comprises a third metal sub-segment and a fourth metal sub-segment; and at least a connecting structure for connecting the outer metal segment and the inner metal segment. The first metal sub-segment corresponds to the third metal sub-segment, and the first metal sub-segment and the third metal sub-segment belong to different metal layers in a semiconductor structure. ... Realtek Semiconductor Corporation

Memory system and memory physical layer interface circuit

A memory physical layer interface circuit electrically connected between a memory controller and a memory device is provided. The memory physical layer interface circuit includes a dock generation module and first-in-first-out (fifo) modules. ... Realtek Semiconductor Corporation

Multimedia synchronization system and method

A multimedia synchronization system used in a wireless local area network is provided. The multimedia synchronization system includes a first multimedia device and a second multimedia device. ... Realtek Semiconductor Corporation

Integrated inductor

An integrated inductor includes a patterned ground shield, an inner rail, and an inductor. The patterned ground shield is disposed in a first direction. ... Realtek Semiconductor Corporation

Combo chip for usb connector

A combo chip is provided. The combo chip is applicable to an usb connector, and includes an usb type-c circuit, an usb non-type-c circuit, a switch unit, and a mode control unit. ... Realtek Semiconductor Corporation

Control circuit of wireless user equipment for dynamically replacing rrc messages

A control circuit of a wireless user equipment includes: a message generating circuit for generating a first and a second rrc (radio resource control) messages, and configuring corresponding first and second priorities; a message reordering circuit for comparing the first and second priorities. If the first priority is higher than the second priority, the message reordering circuit assigns the second rrc message in a message queue to have a transmission order after the first rrc message. ... Realtek Semiconductor Corporation

Control circuit of wireless user equipment for dynamically rearranging transmission orders of rrc messages

A control circuit of a wireless user equipment includes: a message generating circuit for generating a first and a second rrc (radio resource control) messages, and configuring corresponding first and second priorities; a message reordering circuit for comparing the first and second priorities. If the first priority is higher than the second priority, the message reordering circuit assigns the second rrc message in a message queue to have a transmission order after the first rrc message. ... Realtek Semiconductor Corporation

Signal transmission method and communication system using the same

A signal transmission method is provided. The method includes the following steps. ... Realtek Semiconductor Corporation

Switch and multiplexer including the same

A switch and a multiplexer including the same are provided, which are applicable to selectively transmit the high frequency signal from an input terminal to an output terminal therethrough. The switch includes a switch device and a variable resistor. ... Realtek Semiconductor Corporation

10/13/16 / #20160300326

Image processing device and method thereof

This invention discloses an image processing device and an image processing method. The image processing device includes a line buffer, a pixel enhancing module, a smoothing module, a noise reduction module and a contrast adjusting module. ... Realtek Semiconductor Corporation

09/29/16 / #20160286402

Control circuit of wireless user equipment

A control circuit of a wireless user equipment includes: a pdcp layer computing circuit for reading a pdcp sdu from a pdcp sdu buffer of a memory device of the wireless user equipment, and for generating a ciphered data based on the pdcp sdu; a rlc layer computing circuit for generating a rlc pdu based on the ciphered data; a mac layer computing circuit for generating a mac pdu based on the rlc pdu; and a channel encoding circuit for encoding the mac pdu. The pdcp layer computing circuit directly transmits the ciphered data to the rlc layer computing circuit, the rlc layer computing circuit directly transmits the rlc pdu to the mac layer computing circuit, and the mac layer computing circuit directly transmits the mac pdu to the channel encoding circuit, without buffering above data in any buffering circuit outside the control circuit.. ... Realtek Semiconductor Corporation

09/29/16 / #20160285592

Control circuit for controlling wireless user equipment to actively retransmit rrc message

A control circuit of a wireless user equipment includes: a message generating circuit configured to operably generate a target rrc (radio resource control) messages to be transmitted to a communication station through a wireless communication circuit of the wireless user equipment, wherein the target rrc message is a predetermined-type rrc message; and a data control circuit coupled with the message generating circuit and configured to operably transmit the target rrc message to the communication station through the wireless communication circuit, and to retransmit the target rrc message to the communication station through the wireless communication circuit at least one more time before a negative acknowledgement (nack) corresponding to the target rrc message is received by the wireless communication circuit.. . ... Realtek Semiconductor Corporation

09/29/16 / #20160285257

Current-mirror-based electrostatic discharge clamping circuit and current-mirror-based electrostatic discharge detector

The present invention discloses a current-mirror-based electrostatic discharge (esd) clamping circuit comprising: a first power terminal; a second power terminal; a current-mirror-based esd detector; a driver; and an esd clamping element. The current-mirror-based esd detector includes: a resistor coupled between the first power terminal and a detection-output-terminal; a semiconductor capacitor coupled between the detection-output-terminal and an esd triggered current mirror; and the esd triggered current mirror operable to electrically connect the semiconductor capacitor and/or the detection-output-terminal with the second power terminal according to the level of a driving signal under an esd operation. ... Realtek Semiconductor Corporation

09/29/16 / #20160284056

Image processing apparatus and method

An image processing apparatus includes a high-frequency component translating unit, a high-frequency component extracting unit, a detail-gain generating unit and an image output unit. The high-frequency component translating unit extracts and translates first high-frequency components of an input image to generate a first image. ... Realtek Semiconductor Corporation

09/22/16 / #20160276991

Summing amplifier and method thereof

An apparatus includes: a first transconductance device of a first type configured to convert a first voltage into a first current of an output node; a second transconductance device of a second type configured to convert a second voltage into a second current of the output node; a common mode feedback circuit coupled to the output node configured to control a mean voltage at the output node in accordance with a reference voltage; and a reset circuit configured to reset a voltage at the output node in accordance with a clock signal.. . ... Realtek Semiconductor Corporation

09/22/16 / #20160276925

United power module and system using the same

A united power module having an external input and a first input is provided. The united power module includes a load block, a protection circuitry and a detection block. ... Realtek Semiconductor Corporation

09/22/16 / #20160276071

Apparatus and methods for generating a precise resistor

In one embodiment, an apparatus comprising a first resistor, the first resistor comprising a first type of resistor having a plurality of metal wires in respective layers, the plurality of metal wires arranged in series via a plurality of vias.. . ... Realtek Semiconductor Corporation

09/22/16 / #20160274163

Device and method for detecting types of universal serial bus cable

Disclosed is a device and method for detecting types of a universal serial bus cable. The detection device includes a detection circuit and a control unit. ... Realtek Semiconductor Corporation

09/15/16 / #20160269204

Communication system and method

A communication system comprises a packet stream transforming unit, a mapping unit and a transmission unit. The packet stream transforming unit is configured to receive a 4-bit packet stream and transform the 4-bit packet stream into a 6-bit packet stream. ... Realtek Semiconductor Corporation

09/15/16 / #20160269076

Full-duplex transceiver circuit and method thereof

A full-duplex transceiver circuit comprises: a line driver configured to output a first current to a first node and a second current to a second node; a first resistor configured to shunt the first node to ground; a second resistor configured to shunt the second node to ground; a first capacitor configured to couple the first node to a third node; a second capacitor configured to couple the second node to the third node; an operational amplifier configured to receive a first input from a reference node and a second input from the third node and output an output voltage at a fourth node; a feedback network comprising a parallel connection of a third resistor and a third capacitor configured to provide a feedback from the fourth node to the third node; and a transmission line of a characteristic impedance configured to couple the first node to a remote transceiver.. . ... Realtek Semiconductor Corporation

09/15/16 / #20160269057

Transmitter and method for lowering signal distortion

A transmitter includes a first pre-distortion circuit, a second pre-distortion circuit, a transmitting circuit and a pre-distortion parameters generating circuit. The first pre-distortion circuit uses a plurality of first pre-distortion parameters to perform a pre-distortion operation upon a first input signal to generate a pre-distorted first input signal. ... Realtek Semiconductor Corporation

09/15/16 / #20160269029

Logical signal driver with dynamic output impedance and method thereof

In one embodiment, a method comprising receiving a logical signal; driving a source voltage at a first circuit node using a driver circuit in accordance with the logical signal; controlling an output impedance of the driver circuit using a finite state machine (fsm); transmitting the source voltage to a second circuit node via a transmission line; and terminating the second circuit node with a load circuit comprising a data detector.. . ... Realtek Semiconductor Corporation

09/15/16 / #20160268891

Method and apparatus for transmission of logical signals

In one embodiment, a method comprising receiving a logical signal; driving a source voltage at a first circuit node using a driver circuit; generating an impulsive edge signal by detecting a transition of the logical signal; converting the impulsive edge signal into an impulsive charge pump current using a charge pump circuit; injecting the impulsive charge pump current into the first circuit node; transmitting the source voltage to a second circuit node via a transmission line; and terminating the second circuit node with a load.. . ... Realtek Semiconductor Corporation

09/15/16 / #20160267628

Image processing apparatus and method

An image processing apparatus includes a gradient calculation unit, a direction determining unit, a directional interpolation unit, and a blender unit. The gradient calculation unit processes an input image to generate gradient magnitudes and gradient angles associated with input pixels of the input image. ... Realtek Semiconductor Corporation

09/15/16 / #20160267625

Apparatus and method thereof

An apparatus for mode detection for a display device includes a front-end circuit, adapted to fetch an image signal according to a determined mode to generate a fetched image signal, and to adjust the determined mode according to a control signal, and a back-end circuit, connected to the front-end circuit, adapted to process the fetched image signal according to the determined mode. The back-end circuit is adapted to generate an indication signal according to an abnormal status, wherein the back-end circuit comprises a buffer adapted to temporarily store the fetched image signal, and wherein the abnormal status comprises an underflow or overflow state of the buffer. ... Realtek Semiconductor Corporation

09/08/16 / #20160261263

Analog switch circuit

An analog switch circuit is disclosed. The analog switch circuit includes a mosfet and a control switch. ... Realtek Semiconductor Corporation

09/08/16 / #20160260537

Transformer based lctank structure

A transformer includes a first winding and a second winding. The first winding is constructed in a preset solid region having a first level and a second level. ... Realtek Semiconductor Corporation

09/08/16 / #20160259393

Three-way handshaking method and computer readable media

A three-way handshaking method includes: controlling a first port in a first specific mode to send a first specific signal to a second port, and controlling the first port to enter a second specific mode; when the first port receives a second specific signal, determining the second port is in the second specific mode and controlling the first port to send a third specific signal to the second port; and when it is determined that the second port is in a third specific mode, controlling the first port to enter the third specific mode.. . ... Realtek Semiconductor Corporation

08/18/16 / #20160241273

Memory control module and control method

This invention discloses a memory control module and its associated control method. The memory control module includes a storage unit, an ecc unit, and a read/write control unit. ... Realtek Semiconductor Corporation

08/11/16 / #20160233920

Channel detection method and system thereof

A channel detection method for an echo canceller of a communication device is provided. The method includes the following steps. ... Realtek Semiconductor Corporation

08/11/16 / #20160231949

Memory controller and associated control method

A memory controller includes an address decoder and a protocol controller, where the address decoder is arranged for decoding a received signal to generate a plurality of command signals, where the plurality of signals are for accessing a plurality of banks of the memory and the protocol controller is arranged for re-scheduling an executing order of the plurality of command signals according to opening banks and pages, and for accessing the memory according to the plurality of command signals.. . ... Realtek Semiconductor Corporation

08/04/16 / #20160225508

Integrated inductor structure

An integrated inductor structure includes a guard ring, a patterned ground shield, and an inductor. The guard ring includes an inner ring, an outer ring, and an interlaced structure. ... Realtek Semiconductor Corporation

07/28/16 / #20160218169

Integrated inductor structure and method for manufacturing the same

An integrated inductor structure includes a capacitor, a guard ring, a patterned shield, and an inductor. The guard ring is coupled to the capacitor. ... Realtek Semiconductor Corporation

07/28/16 / #20160216303

Audio plug detection structure and method thereof

An audio plug detection structure is disclosed, which is adapted for an audio jack corresponding to an audio plug and includes a first and second connection points, a time-varying signal generation circuit, and a comparison circuit. The time-varying signal generation and comparison circuits are connected to the first connection point. ... Realtek Semiconductor Corporation

07/21/16 / #20160211964

Clock and data recovery circuit and frequency detection method thereof

The present disclosure provides a crystal-less clock and data recovery (cdr) circuit and a frequency detection method thereof. The cdr circuit includes a clock generator and a frequency detection module. ... Realtek Semiconductor Corporation

07/21/16 / #20160211255

Semiconductor device and method of manufacturing same

A method of manufacturing a semiconductor device, comprising: providing a substrate; forming a first trough structure, which comprises at least a first sidewall, on the substrate; forming a first doping layer on the first sidewall; covering the first doping layer and a part of a surface of the substrate by a photoresist; forming a second trough structure, which comprises at least a second sidewall, on a part of the substrate which is not covered by the photoresist; removing the photoresist; forming an insulation layer on the substrate, the first trough structure, and the second trough structure; forming a conductive layer on the substrate, the first trough structure, and the second trough structure; and removing parts of the insulation layer and the conductive layer outside the first trough structure and the second trough structure to expose a surface of the first doping layer at the opening of the first trough structure.. . ... Realtek Semiconductor Corporation

07/14/16 / #20160204766

Method and apparatus for generating a spread-spectrum clock

This disclosure provides an apparatus for generating a spread-spectrum clock, which comprises: a multi-phase clock generator generating a pre-determined number of first clock signals having substantially identical period and different phases; a spread spectrum clock controller producing an instruction signal according to a first pre-determined spread spectrum target; and a clock selector receiving the instruction signal and dynamically selecting a clock signal from the first clock signals according to the instruction signal so as to produce a first spread spectrum signal; wherein the first spread spectrum signal has a spread spectrum corresponding to the first pre-determined spread spectrum target.. . ... Realtek Semiconductor Corporation

06/16/16 / #20160173086

Sampling circuit and sampling method

A sampling circuit for sampling an input voltage and generating an output voltage, comprising six switches, a capacitor and a voltage buffer. The first switch has a control terminal and makes the output voltage equal to the input voltage when switching on. ... Realtek Semiconductor Corporation

06/09/16 / #20160163886

Biasing voltage generating circuit for avalanche photodiode and related control circuit

A biasing voltage generating circuit for generating a required reverse biasing voltage of an avalanche photodiode (apd) includes: a boost power converter configured to operably convert an input voltage into a higher output voltage according to a feedback signal and a reference signal, and to apply the output voltage to be a reverse biasing voltage of the apd; a reference signal generating circuit configured to operably generate the reference signal; and a control circuit. The control circuit includes: a signal sensing circuit configured to operably generate a sensed signal corresponding to an output current of the apd; an analog-to-digital converter (adc) configured to operably convert the sensed signal into a digital signal; and a processing circuit configured to operably adjust the feedback signal or the reference signal according to the digital signal to thereby control the boost power converter to adjust the output voltage.. ... Realtek Semiconductor Corporation

05/12/16 / #20160132455

Control method applied to operating-mode finite-state-machine and computer readable media

A control method applied to an operating-mode finite-state-machine (opfsm) arranged for deciding a behavior of a first port of an apparatus includes: controlling the opfsm to enter a second local state from a first local state and controlling the first port to send a signal with a wakeup pattern to a link partner of the first port when the state of the opfsm is the first local state, and a wakeup request bit is a first local value.. . ... Realtek Semiconductor Corporation

05/05/16 / #20160128062

Wireless communication system and associated wireless communication method

A wireless communication system includes an access point and at least one station, wherein when the access point operates in a setup mode, both the access point and station confirm a specific time slot for transmitting a packet from the station to the access point; and when the access point operates in a data mode following the setup mode, the station directly uses the specific time slot determined in the setup mode to transmit the packet to the access point.. . ... Realtek Semiconductor Corporation

05/05/16 / #20160128061

Wireless communication system and associated wireless communication method

A wireless communication system includes an access point and at least one station, wherein when the access point operates in a setup mode, both the access point and station confirm a specific time slot for transmitting a packet from the station to the access point; and when the access point operates in a data mode following the setup mode, the station directly uses the specific time slot determined in the setup mode to transmit the packet to the access point.. . ... Realtek Semiconductor Corporation

05/05/16 / #20160126966

Successive approximation analog-to-digital converter and conversion method

The present invention discloses a successive approximation analog-to-digital converter capable of improving the accuracy of analog-to-digital conversion. An embodiment of this converter comprises: a successive approximation analog-to-digital converting circuit operable to generate m bits according to an analog input signal in which the m bits include a most significant bit (msb) and successive m−1 bit(s) in succession to the msb while the number m is an integer greater than one; and a multi-bit generating circuit operable to receive a capacitor array output signal and a comparison signal outputted from the successive approximation analog-to-digital converting circuit for a predetermined time after the generation of the m bits, and then generate n bits at a time accordingly in which the n bits include a least significant bit (lsb) and successive n−1 bit(s) ahead of the lsb while the number n is an integer greater than one.. ... Realtek Semiconductor Corporation

04/28/16 / #20160119974

Front-end circuit for wireless communication system and wireless communication system thereof

A front-end circuit for a wireless communication system includes a first amplifier, a second amplifier and an antenna switch. The first amplifier is disposed at a receiving path, wherein the first amplifier has an input terminal and an output terminal, and the input terminal of the first amplifier is coupled to a first pad. ... Realtek Semiconductor Corporation

04/07/16 / #20160099722

Method and apparatus for calibrating comparator offset of successive-approximation-register analog-to-digital converter

A circuit and method compensates for comparator offset in a successive approximation register analog-to-digital converter. The circuit includes a multiplexed sampler to sample either a common mode voltage or an input signal. ... Realtek Semiconductor Corporation

04/07/16 / #20160099689

Transmission line driver circuit for adaptively calibrating impedance matching

A transmission line driver circuit includes: a transmission line driving amplifier having a first transmission terminal and a second transmission terminal; a first signal node; a second signal node; a first adjustable resistor positioned between the first transmission terminal and the first signal node; a second adjustable resistor positioned between the second transmission terminal and the second signal node; an internal node; a first divider resistor positioned between the first signal node and the internal node; a second divider resistor positioned between the second signal node and the internal node; a comparing circuit for comparing a divided voltage at the internal node with a reference voltage to generate a comparison signal; and an adjusting circuit for adjusting resistance of at least one of the first and second adjustable resistors according to the comparison signal.. . ... Realtek Semiconductor Corporation

04/07/16 / #20160099301

Structure of integrated inductor

This invention discloses a structure of an integrated inductor, comprising: an outer metal segment which comprises a first metal sub-segment and a second metal sub-segment; an inner metal segment which is arranged inside an area surrounded by the outer metal segment and comprises a third metal sub-segment and a fourth metal sub-segment; and at least a connecting structure for connecting the outer metal segment and the inner metal segment. The first metal sub-segment corresponds to the third metal sub-segment, and the first metal sub-segment and the third metal sub-segment belong to different metal layers in a semiconductor structure. ... Realtek Semiconductor Corporation

04/07/16 / #20160098119

Audio codec, portable electronic apparatus and button control method

A button control method for a built-in audio codec of a portable electronic apparatus, and the button control method includes the following steps. A plurality of button signals generated by a button unit is first detected during a button detection period. ... Realtek Semiconductor Corporation

03/31/16 / #20160094196

Transmission line driver circuit for automatically calibrating impedance matching

A transmission line driver circuit includes: a transmission line driving amplifier having a first transmission terminal and a second transmission terminal; a first signal node; a second signal node; a first adjustable resistor positioned between the first transmission terminal and the first signal node; a second adjustable resistor positioned between the second transmission terminal and the second signal node; a first voltage difference generating circuit coupled with two terminals of the first adjustable resistor to generate a first voltage difference value; a second voltage difference generating circuit coupled with two terminals of the second adjustable resistor to generate a second voltage difference value; sample-and-hold circuits for generating sampled signals according to the first voltage difference value and the second voltage difference value; a comparing circuit for comparing the sampled signals; and an adjusting circuit for adjusting resistance of the first and/or second adjustable resistors according to the comparing result.. . ... Realtek Semiconductor Corporation

03/24/16 / #20160086309

Image signal processing method and image signal processor

An image signal processing method includes: receiving an original color filter array (cfa) image and a pixel binned cfa image; computing a specific information of the pixel binned cfa image; and processing the original cfa image according to the specific information. The associated image signal processor includes an input terminal, an operating unit and a processing unit, wherein the input terminal is for receiving an original cfa image and a pixel binned cfa image, the operating unit is for computing a specific information of the pixel binned cfa image, and the processing unit is for processing the original cfa image according to the specific information and utilizing the pixel binned cfa image.. ... Realtek Semiconductor Corporation

03/17/16 / #20160080516

Multimedia generating method and related computer program product

A multimedia generating method for use in a target electronic device includes: communicating the target electronic device with a central relay server (crs) via internet to conduct an identity authentication; receiving an activation command from the crs via internet; after receiving the activation command, activating a websocket server module in the target electronic device to establish one or more network sockets between the target electronic device and other electronic devices, so that the target electronic device and other electronic devices communicate control parameters via the websocket server module; generating one or more corresponding images according to control parameters received from other electronic devices; and displaying the one or more images on a display of the target electronic device.. . ... Realtek Semiconductor Corporation

03/17/16 / #20160079981

High-speed inverter and method thereof

A cmos (complementary metal oxide semiconductor) inverter includes a pmos (p-channel metal oxide semiconductor) transistor configured to receive a first input signal via a first input terminal and output a first output signal via a first output terminal, an nmos (n-channel metal oxide semiconductor) transistor configured to receive a second input signal via a second input terminal and output a second output signal via a second output terminal, and a resistor configured to provide an isolation between the first output signal and the second output signal. In an embodiment, the first input signal is of a fast high-to-low transition but a slow low-to-high transition, and the second input signal is of a fast low-to-high transition but a slow high-to-low transition. ... Realtek Semiconductor Corporation

03/17/16 / #20160079856

Dc-to-dc converter and converting method of discontinuous conduction mode

The present invention discloses a dc-to-dc converter of discontinuous conduction mode capable of preventing an inductor current from being reduced to zero under an idle state, comprising: an inductor operable to output the inductor current according to a dc-input signal under an energy-storage state, output the inductor current according to the dc-input signal and a dc-output signal under an energy-release state, and keep the inductor current unchanged under the idle state; a freewheel switch operable to be conductive under the idle state and nonconductive under the energy-storage and energy-release states according to a freewheel-control signal and form a current loop with the inductor; a current sensing circuit operable to detect the inductor current and generate a current-detection signal; and a control circuit operable to generate the freewheel-control signal according to the current-detection signal and control the state of the converter to be the energy-storage state, energy-release state or idle state.. . ... Realtek Semiconductor Corporation

03/17/16 / #20160078154

Digital circuit design method and associated computer program product

A digital circuit design method includes: before performing physical design: performing a logic synthesis according to a register transfer level (rtl) design and a plurality of constraints to at least generate a netlist, a standard delay format file and a first constraint file; retrieving information of at least a specific node of circuit from the first constraint file to generate a second constraint file; generating an updated standard delay format file at least according to the standard delay format file and the second constraint file, wherein a delay of the specific node of the updated standard delay format file is less than a delay of the specific node of the standard delay format file; and using the netlist and the updated standard delay format file to perform a pre-post-layout simulation.. . ... Realtek Semiconductor Corporation

03/03/16 / #20160065638

Controller and voice transmission system using the same

A voice transmission system includes at least one electronic device and a controller. The at least one electronic device is connected to an internet. ... Realtek Semiconductor Corporation

03/03/16 / #20160065495

Method and circuit for establishing network connection

The present invention discloses a network connection establishing method capable of preventing a link procedure from being strangled in a training state. An embodiment of the method comprises: a preceding step; a training step; and a following step. ... Realtek Semiconductor Corporation

03/03/16 / #20160065157

Method and apparatus for gain enhancement of differential amplifier

A differential amplifier circuit and method having a feed-in network coupling an input signal to an intermediate signal. An amplifier amplifies the intermediate signal by a gain factor to output an output signal to a load network. ... Realtek Semiconductor Corporation

02/25/16 / #20160056625

Electrostatic discharge protection circuit

An esd protection circuit includes a plurality of resistors, at least a capacitor, a driving circuit and an esd clamping device, wherein a first node of each resistor is connected to a first supply voltage, and a second node of each of at least a portion of the resistors is selectively connected to an input node via a corresponding switch respectively, and a first node of the capacitor is connected to a second supply voltage, and a second node of the capacitor is connected to the input node; the driving circuit is arranged to generate a driving signal according to a voltage on the input node; and the esd clamping device is coupled to the driving circuit, and connected between the first supply voltage and the second supple voltage, and the esd clamping device is arranged to selectively bypass an esd current according to the driving signal.. . ... Realtek Semiconductor Corporation

02/11/16 / #20160043862

Multi-channel timing recovery device

The present invention discloses a multi-channel timing recovery device capable of generating a common clock for processing a plurality of data channel signals, comprising: a first channel timing recovery circuit, and a second channel timing recovery circuit. The said first channel timing recovery circuit includes a first detecting circuit capable of detecting phase and/or frequency, an oscillation control circuit, an oscillator and a feedback circuit, and is operable to generate the common clock according to a first channel signal which could be a clock signal or a data signal. ... Realtek Semiconductor Corporation

02/04/16 / #20160036489

Signal receiving device for ethernet and control method thereof

This invention discloses a signal receiving device for ethernet and a control method thereof. The signal receiving device includes a gain control circuit, an alien near-end crosstalk canceller, a noise canceller, and a dfe. ... Realtek Semiconductor Corporation

02/04/16 / #20160036472

Digital pre-distortion circuit and method, and digital pre-distortion training circuit

The present invention discloses a digital pre-distortion circuit capable of compensating an analog circuit for its non-linear characteristic. An embodiment of said digital pre-distortion circuit comprises: a pre-distortion training circuit and a pre-distortion circuit. ... Realtek Semiconductor Corporation

02/04/16 / #20160036419

Method and apparatus for calibrating cmos inverter

A circuit and method for calibrating cmos (complementary metal-oxide semiconductor) inverters are provided. In a circuit, a first tunable cmos inverter, controlled by a control signal, receives a first voltage from a first circuit node and outputs a second voltage to a second circuit node. ... Realtek Semiconductor Corporation

02/04/16 / #20160035887

Semiconductor device and multiple gate field effect transistor

The present invention provides a semiconductor device, which includes a substrate, a first gate electrode, a second gate electrode, a source region and a drain region, wherein the first gate electrode and the second gate electrode are embedded in the substrate respectively; the source region is formed in the substrate, and at least a portion of the source region is disposed between the first gate electrode and the second gate electrode; and the drain region is formed in the substrate, and at least a portion of the drain region is disposed between the first gate electrode and the second gate electrode.. . ... Realtek Semiconductor Corporation

02/04/16 / #20160035671

Structure of integrated inductor

This invention discloses an integrated inductor structure, including a first metal trace, a second metal trace, and a connecting metal trace. Tow terminals of the connecting metal trace are respectively connected to the first metal trace and the second metal trace through at least a connecting structure. ... Realtek Semiconductor Corporation

02/04/16 / #20160035411

Memory control circuit and associated memory control method

A memory control circuit includes a comparator, an eye width measuring circuit and a calibration circuit, wherein the comparator is arranged to compare a data signal with a reference voltage to generate a compared data signal; the eye width measuring circuit is coupled to the comparator, and is arranged to measure an eye width of the compared data signal to generate a measuring result; and the calibration circuit is coupled to the comparator and the eye width measuring circuit, and is arranged to adjust a level of the reference voltage according to the measuring result.. . ... Realtek Semiconductor Corporation

01/21/16 / #20160021745

Ball grid array formed on printed circuit board

A ball grid array (bga) formed on printed circuit board is provided. The bga comprises a first solder ball module and a second solder ball module. ... Realtek Semiconductor Corporation

01/21/16 / #20160020761

Transmission circuit with leakage prevention circuit

A transmission circuit includes: a first transistor, having a source terminal coupled to a first reference voltage terminal of the transmission circuit and a drain terminal coupled to a first output terminal of the transmission circuit; a second transistor, having a source terminal coupled to a gate of the first transistor, and a drain terminal coupled to the first output terminal of the transmission circuit; and a third transistor, having a drain terminal coupled to the first output terminal of the transmission, a source terminal coupled to a second reference voltage terminal of the transmission, and a gate terminal for receiving a first input signal; wherein the first and second transistors are of a first conducting type, and the third transistor is of a second conducting type different from the first conducting type.. . ... Realtek Semiconductor Corporation

01/21/16 / #20160020757

High-speed clocked comparator and method thereof

A circuit includes a voltage-to-current converter receives a first voltage and a second voltage and outputs a first current and a second current in accordance with a clock signal. A first self-gated cascode circuit receives the first current and outputs a third current in accordance with the clock signal. ... Realtek Semiconductor Corporation

01/14/16 / #20160013938

Decryption engine and decryption method

A decryption engine includes an update circuit, a key generator, a decryption circuit and a detection circuit. The update circuit generates a first updating information based on a premise of that a currently received frame is encrypted, and generates a second updating information based on a premise of that the currently received frame is non-encrypted. ... Realtek Semiconductor Corporation

01/07/16 / #20160006420

Quadrature output ring oscillator and method thereof

Various circuits are described, which sustain an oscillation using a combination of four primary inverters, four feedforward inverters, and four coupling resistors for outputting a quadrature output signal while avoiding contention between a primary inverter and a feedforward inverter. In one configuration, a circuit includes four primary inverters configured in a ring topology, four coupling resistors uniformly interposed in the ring among the four primary inverters, and four feedforward inverters forming four sub-feedback loops, respectively, each sub-feedback loop comprising two primary inverters, one coupling resistor, and one feedforward inverter. ... Realtek Semiconductor Corporation

01/07/16 / #20160004273

Clock generator, communication device and sequential clock gating circuit

The present invention discloses a clock generator comprising: an oscillator operable to generate a reference clock; a multi-phase clock generating circuit operable to generate a plurality of output clocks of the same frequency but different phases according to the reference clock and stop or start outputting the output clocks according to a power control signal; a sequential clock gating circuit operable to sequentially stop or start outputting a plurality of gated clocks according to a gate control signal and maintain an output cycle number relation between the gated clocks even though the multi-phase clock generating circuit stops and then starts outputting the output clocks; and a clock operation control circuit operable to provide the power control signal and the gate control signal.. . ... Realtek Semiconductor Corporation

01/07/16 / #20160003903

Integrated circuit with self-verification function, verification method and method for generating a bist signature adjustment code

An integrated circuit includes a built-in self-test (bist) circuit, a predetermined signature pattern and a read only memory (rom), wherein the predetermined signature pattern is stored in the integrated circuit. The rom stores at least effective information and a bist signature adjustment code, the bist signature adjustment code is irrelevant to any functional information stored in the rom; wherein the bist circuit is used to test content stored in the rom to generate a signature pattern, and compare the signature pattern with the predetermined signature pattern to judge if the content stored in the rom has error.. ... Realtek Semiconductor Corporation








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