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Tektronix Inc patents


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "T" | Tektronix Inc-related inventors


Sampling gate for broadband frequency reconstruction

A sampling gate comprising a first frequency input coupled to a first frequency path from a broadband photodiode. The sampling gate also includes a positive bias input coupled to a positive offset portion of a second frequency path from the broadband photodiode. ... Tektronix Inc

Realtime streaming control of an arbitrary waveform generator

A device has a digital-to-analog converter to convert waveform data into analog waveforms, a waveform memory to store stored waveform data, an external waveform interface to receive real-time waveform data from an external device, a waveform multiplexer connected to the digital-to-analog converter to select between the first memory and the external waveform interface, a sequencer to receive and execute instructions to identify and access waveform data to drive the digital-to-analog converter, a sequencer instruction memory to provide stored instructions to the sequencer, an external instruction interface to receive real-time instructions for the sequencer, and a sequencer multiplexer to select between the sequencer instruction memory and the external instruction interface connected to the sequencer. A method of controlling a waveform generator includes selecting a mode of operation, where the mode of operation is selected from streaming waveform data, real-time waveform memory updates, real-time sequencer instructions, real-time sequencer instruction updates, and real-time sequencer flow control.. ... Tektronix Inc

Osilloscope persistence for digital bus signals

A test and measurement system is disclosed that includes an input for receiving a digital bus conducting a plurality of digital values, a display, and a memory. The memory stores hit frequencies for the digital values, and stores data indicating the digital values. ... Tektronix Inc

Test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing and a linear time-periodic filter

A test and measurement instrument, including a splitter configured to split an input signal having a particular bandwidth into a plurality of split signals, each split signal including substantially the entire bandwidth of the input signal, a plurality of harmonic mixers, each harmonic mixer configured to mix an associated split signal of the plurality of split signals with an associated harmonic signal to generate an associated mixed signal, a plurality of digitizers, each digitizer configured to digitize a mixed signal of an associated harmonic mixer of the plurality of harmonic mixers, and a linear time-periodic filter configured to receive the digitized mixed signal from each of the digitizers and output a time-interleaved signal. A first-order harmonic of at least one harmonic signal associated with the harmonic mixers is different from a sample rate of at least one of the digitizers.. ... Tektronix Inc

Variable passive network noise filter for noise reduction

Disclosed is a noise filter. The noise filter includes an input port to receive an analog signal. ... Tektronix Inc

Impedance measurement through waveform monitoring

Embodiments of the invention provide a capability of determining an input impedance of a connected device under test based on waveform monitoring of an output signal of a waveform generator. Using embodiments of the invention, the input impedance of dut is determined from the waveform monitoring results. ... Tektronix Inc

Recommending measurements based on detected waveform type

An oscilloscope including an input port for receiving training data including waveforms and corresponding known classifications and a processor for training a plurality of classifiers on the training data. Training includes iteratively applying each classifier to each waveform of the training data to obtain corresponding predicted waveform classifications and comparing the predicted waveform classifications with the known classifications. ... Tektronix Inc

Probe tip and probe assembly

A test probe tip can include a resistive element coupled with a tip component. The resistive element can include a resistive layer disposed on an exterior surface of a structural member of the resistive impedance element. ... Tektronix Inc

High frequency time domain reflectometry probing system

A probe includes a self-aligning connector set, a moveable probe tip, a cable, a housing, and a spring. When the probe tip is pressed to a test point on a device-under-test, the probe tip moves within the housing to cause a first connector and a second connector of the self-aligning connector set to be connected through an adapter of the self-aligning connector set, thereby establishing a signal path through the probe. ... Tektronix Inc

Jitter and eye contour at ber measurements after dfe

A method of employing a decision feedback equalizer (dfe) in a test and measurement system. The method includes obtaining an input signal data associated with an input signal suffering from inter-symbol interference (isi). ... Tektronix Inc

Multi-band noise reduction systems and methods

Systems and methods directed towards reducing noise introduced into a signal when processing the signal are discussed herein. In embodiments a signal may initially be split by a multiplexer into two or more frequency bands. ... Tektronix Inc

Composite user interface

A system for displaying information including a central processing unit, the central processing unit receiving real-time image data consisting of at least one of waveform and picture data, and web input data and producing a first graphics layer of web data, a second graphics layer of graticule data, and a third graphics layer of real-time data, a memory connected to the central processing unit to store the first, second and third graphics layers, a graphics processor to retrieve the first, second and third graphics layers from the memory and to generate a display window, and a display device to display the display window.. . ... Tektronix Inc

Method and system for dynamic handling in real time of data streams with variable and unpredictable behavior

A computer-implemented method for supervising data stream storage including communicating with a probe that captures network data and outputs a plurality of data streams to a plurality of data repository units, receiving registration data associated with respective data streams that identifies the associated probes, selecting at least one of the data repository units to store the first data stream in real time based on a storage capacity of the data repository units to receive and store data, determining that storage capacity is not sufficient for the data stream in response to a change in the storage capacity of the data repository units to receive and store data, determining a corrective action in response to the determination that the storage capacity is not sufficient, and notifying the probe identified in association with the first data stream about the corrective action.. . ... Tektronix Inc

Determination of constellation impairment parameters via error-vector magnitude minimization

A test and measurement system is disclosed. The system includes a data store with a data description of a received in-phase (i) quadrature (q) symbol. ... Tektronix Inc

12/07/17 / #20170353248

Electro-optic sensor system

An electro-optical sensor comprises an optical input configured to receive an optical carrier via an upstream fiber. The electro-optical sensor also includes an optical modulator configured to modulate an electrical signal onto the optical carrier to create an optical signal. ... Tektronix Inc

11/30/17 / #20170346555

Multiple timebase sampling scope

A test and measurement instrument includes a first input port and a second input port that receive a first input signal modulated according to a first clock signal and a second input signal modulated according to a second clock signal, respectively. The first clock signal and the second clock signal may be asynchronous. ... Tektronix Inc

11/16/17 / #20170328932

Noise reduction in digitizing systems

Disclosed are systems and methods related to a noise reduction device employing an analog filter and a corresponding inverse digital filter. The combination and placement of the filters within the systems aids in reducing noise introduced by processing the signal. ... Tektronix Inc

10/12/17 / #20170292977

Linear noise reduction for a test and measurement system

Disclosed is a mechanism for reducing noise caused by an analog to digital conversion in a test and measurement system. An adaptive linear filter is generated based on a converted digital signal and measured signal noise. ... Tektronix Inc

09/28/17 / #20170279707

Fully connected network

A fully-connected mesh network includes a plurality of switches. A first switch receives a packet traveling through the mesh network from an external source node to an external destination node specified by the packet. ... Tektronix Inc

09/21/17 / #20170271828

Differential pin to rf adaptor for probing applications

A differential pin to rf adaptor includes a center conductor contact with an rf connector on one end and a signal contact on the other end. An insulating sleeve surrounds the central contact. ... Tektronix Inc

09/21/17 / #20170271826

Flexible resistive tip cable assembly for differential probing

A flexible resistive tip cable assembly includes a probe radio frequency (rf) connector structured to receive a rf differential signal and a testing connection assembly. A coaxial cable is structured to conduct the rf differential signal between the probe rf connector and the testing connection assembly. ... Tektronix Inc

08/31/17 / #20170248653

Active noise suppression for optical voltage sensor

A sensor head of a test and measurement instrument can include an input configured to receive an input signal from a device under test (dut), an optical voltage sensor having signal input electrodes and control electrodes or one set of electrodes, wherein the input is connected to the signal input electrodes, and a bias control unit connected to the control electrodes and configured to reduce an error signal or the input signal bias control signal are electrically combined and applied to a single set of electrodes.. . ... Tektronix Inc

08/31/17 / #20170248631

Dynamic output clamping for a probe or accessory

A probe or accessory for use with an electrical test and measurement instrument can include an input to receive an input signal from a device under test (dut), a clamp control unit or oscilloscope to apply a clamping/limiting level to the input signal to generate an output signal, and/or a control unit output port to provide the clamped/limited output signal to an oscilloscope.. . ... Tektronix Inc

08/10/17 / #20170230650

Camera stop calibrator

A stop-weighted light reference includes an led light source and a pulse-generator structured to drive the light source at pre-defined levels. The pre-defeined levels relate to one another on a loge scale. ... Tektronix Inc

08/10/17 / #20170227581

Trigger on final occurrence

This disclosure relates generally to test and measurement instruments structured to detect that a series of events occurred, and structured to generate a trigger signal in response to detecting that a final event in the series of events occurred. The trigger may be generated based on a timeout signal, or based on another event, trigger, or signal. ... Tektronix Inc

07/27/17 / #20170214790

Conditional two stage distributed correlation of cp-up for ims protocols

A system for monitoring calls in a volte network is provided. The monitored calls include sip, rtp and h.248 portions. ... Tektronix Inc

07/20/17 / #20170208487

Multi kpi correlation in wireless protocols

A network monitoring system is provided that includes a processor, a memory coupled to the processor and a database that includes key performance indicator (kpi) records for monitoring a wireless communication system. The network monitoring system further includes a rules engine configured and operable to store in the memory kpi rules associated with at least one rule set. ... Tektronix Inc

07/20/17 / #20170207990

Reducing an amount of captured network traffic data to analyze

A system and method for monitoring a communication network is provided. The method includes capturing network data from network traffic of the communication network by a plurality of probes monitoring the communication network. ... Tektronix Inc

07/20/17 / #20170207987

Selective extraction of network link training information

An apparatus and method that captures a complete history of serial network link training negotiations by continuously monitoring multiple analog signals representing both sides of full duplex lanes in real-time by pattern matching the link training frame marker and the subsequent negotiation request/response data values. The apparatus and method compare the digitized version of the incoming signal against a nominal pattern at the start to find the frame markers and control channel data, storing only those control channel data values that do not match the current compare pattern, and further by updating the current compare pattern to the new pattern just received, so that only the transitions in the data values are stored, thereby vastly reducing the amount of data presented to the user, but nonetheless retaining the complete substantive history of the link training negotiations.. ... Tektronix Inc

07/20/17 / #20170207948

Multi cause correlation in wireless protocols

A network monitoring system is provided that includes a processor, a memory coupled to the processor and a database that includes session data of one or more transactions in a multiprotocol wireless communication system. The network monitoring system further includes a rule engine configured and operable to store rules associated with at least one rule set. ... Tektronix Inc

07/13/17 / #20170201239

Event activity trigger

Methods of triggering a test and measurement instrument having a plurality of inputs include the step of generating a trigger signal in response to every occurrence of any one of a plurality of specified trigger events. A first specified trigger event occurs in at least a first one of the inputs and a second specified trigger event occurs in at least a second one of the plurality of inputs. ... Tektronix Inc

06/22/17 / #20170176499

Calibration for test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing

A test and measurement instrument includes a coefficient storage facility coupled to a programmable filter. The coefficient storage facility is configured to store at least two pre-determined filter coefficient sets, and configured to pass a selected one of the at least two pre-determined filter coefficient sets to the filter based on a measurement derived using a compensation oscillator. ... Tektronix Inc

06/15/17 / #20170168092

Group delay based averaging

Embodiments of the present invention provide techniques and methods for improving signal-to-noise ratio (snr) when averaging two or more data signals by finding a group delay between the signals and using it to calculate an averaged result. In one embodiment, a direct average of the signals is computed and phases are found for the direct average and each of the data signals. ... Tektronix Inc

05/04/17 / #20170126476

System and method for automatically identifying failure in services deployed by mobile network operators

A network monitoring system is provided that includes a processor and a memory coupled to the processor. A plurality of services provided by a network operator is identified. ... Tektronix Inc

04/27/17 / #20170115325

Position sensing in a probe to modify transfer characteristics in a system

Test and measurement probes include a body, an adjustable member moveably coupled to the body and having a changeable position relative to the body, and a transducer subsystem structured to measure the position of the adjustable member and configured to output a position signal indicative of the position of the adjustable member. A change in the position of the adjustable member causes a change in an electrical characteristic of the probe. ... Tektronix Inc

04/06/17 / #20170099500

Low complexity perceptual visual quality evaluation for jpeg2000 compressed streams

A method of detecting image quality in a wavelet transform-encoded image includes receiving wavelet transform-encoded image data partitioned into tiles, each tile partitioned into a number of subbands, evaluating a number of wavelets in fewer than the number of subbands, assigning a measure to each of the subbands evaluated for each tile, using the measures to determine a perceptual visual quality score for the image, and adjusting operation of the decoder based upon the perceptual visual quality score. A decoding system includes a memory to receive wavelet-transformed compressed image data having a predetermined number of subbands, and a decoder to determine a number of wavelet coefficients in a subset of the predetermined number of subbands, measure an amount of blur in the image data based upon the number of wavelet coefficients, and adjust a decoding process based upon the amount of blur.. ... Tektronix Inc

03/30/17 / #20170093560

Adaptive compensation for internal asymmetric delay in network based timing systems

Embodiments of the invention include a network-based timing instrument that has a master unit and an internal switch that communicate with a slave device. The master unit includes a timing compensator. ... Tektronix Inc

03/30/17 / #20170089954

Offset stacked compressor amplifiers in a discrete digitizer system for noise reduction and increased resolution

A test and measurement instrument, including a splitter configured to split an input signal into two split input signals and output each split input signal onto a separate path and a combiner configured to receive and combine an output of each path to reconstruct the input signal. Each path includes an amplifier configured to receive the split input signal and to compress the split input signal with a sigmoid function, a digitizer configured to digitize an output of the amplifier; and at least one processor configured to apply an inverse sigmoid function on the output of the digitizer.. ... Tektronix Inc

03/23/17 / #20170085366

Method for automatically finding the optimum sampling point in an eye diagram

A system and method of multi-symbol communications from a transmitter to a receiver via a channel, including transmitting signals as a waveform representing a sequence of symbols, each symbol of unit-interval duration and each symbol associated with its own signal level. This method includes graphically representing the waveform as an eye diagram having a horizontal time axis and a vertical signal level axis arranged to form one or more eyes, and using a sampling point in each eye to determine which signal the waveform in any unit interval represents. ... Tektronix Inc

03/16/17 / #20170077939

Test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing and a linear time-periodic filter

A test and measurement instrument, including a splitter configured to split an input signal having a particular bandwidth into a plurality of split signals, each split signal including substantially the entire bandwidth of the input signal, a plurality of harmonic mixers, each harmonic mixer configured to mix an associated split signal of the plurality of split signals with an associated harmonic signal to generate an associated mixed signal, a plurality of digitizers, each digitizer configured to digitize a mixed signal of an associated harmonic mixer of the plurality of harmonic mixers, and a linear time-periodic filter configured to receive the digitized mixed signal from each of the digitizers and output a time-interleaved signal. A first-order harmonic of at least one harmonic signal associated with the harmonic mixers is different from a sample rate of at least one of the digitizers.. ... Tektronix Inc

03/16/17 / #20170077645

Reduced stress electrical connector

An electrical connector including a main body, a base portion, and a tapered end. The electrical connector extends axially in a first direction and an opposite second direction. ... Tektronix Inc

03/09/17 / #20170069119

Continuous rf signal visualization with high resolution

A method and apparatus for continuous rf signal visualization with high resolution acquires rf signal data within a specified frequency bandwidth seamlessly to produce digitized time domain data. The digitized time domain data is processed in both the frequency and time domains to form high resolution spectral and time traces which are stored. ... Tektronix Inc

02/23/17 / #20170052216

Test and measurement probe with adjustable test point contact

A probe for making electrical contact with a device-under-test test point includes a body, a rigid member capable of travelling linearly with respect to the body, a flexible arm having a test point contact at one end and fastened to the rigid member at the other end, and a flexible linkage fixed to the body and to the flexible arm. The flexible linkage is structured to cause the flexible arm to bend in response to travel of the rigid member in one direction, and to cause the flexible arm to unbend in response to travel of the rigid member in the other direction. ... Tektronix Inc

02/23/17 / #20170052213

Test connector for coaxial cables

A connector for terminating a cable including a compressible fitting and a crimp nut. The compressible fitting has an inner passage to receive a portion of the cable and a threaded outer wall coaxial with and surrounding the inner passage. ... Tektronix Inc

02/16/17 / #20170045603

Synchronization of unstable signal sources for use in a phase stable instrument

A vector network analyzer (vna) can include a control processor, a plurality of receivers coupled with the control processor, the plurality of receivers having a common signal generator source, and a coupler/power divider network configured to distribute each of a plurality of source reference signals to a corresponding one of the plurality of receivers.. . ... Tektronix Inc

02/16/17 / #20170045550

Cable assembly with spine for instrument probe

Embodiments of the present invention provide an improved cable assembly for connecting an electrical test and measurement probe to a device under test. One end of the probe is connected to a device under test (“dut”), while the other end is connected to the instrument through one or more cables. ... Tektronix Inc

02/02/17 / #20170030945

Apparatus and method for time correlated signal acquisition and viewing

A test and measurement instrument and method are disclosed. The test and measurement instrument includes a display having a time domain graticule and a frequency domain graticule. ... Tektronix Inc

01/26/17 / #20170023628

Time corrected time-domain reflectometer

A test and measurement instrument including an input configured to receive a reflected and/or transmitted pulse signal from a device under test, a reference clock input configured to receive a reference signal, the reference signal being asynchronous from the reflected pulse signal, a phase reference module configured to acquire samples of the reference signal, a sampling module configured to acquire samples of the reflected pulse signal; and a controller configured to determine a scattering parameter of the device under test based on the acquired samples of the reference signal and the acquired samples of the reflected pulse signal.. . ... Tektronix Inc

01/19/17 / #20170016935

High bandwidth differential lead with device connection

A signal lead structured to be attached to an electrical device that comprises a signal pad, a spring housing, a spring, and a flexible conduit. The spring is carried in the spring housing, and a portion of the spring extends beyond a surface of the spring housing when the spring is unsprung. ... Tektronix Inc

01/12/17 / #20170012841

Method and system for optimizing a communication network feature prior to implementing a new service

A method, device and system for method of optimizing a feature of a communication network prior to implementing a future service is provided. A plurality of network nodes in the communication network is assigned to a network cluster. ... Tektronix Inc

01/05/17 / #20170005889

Self-localizing data distribution network

To adaptively self-localize distributed data processing and data distribution and reduce data transfer costs in a network monitoring system, data has a corresponding ownership association. For each data access, an ownership association value for the accessed data may be modified based on whether the access originated with a current owner processing node or a second most-frequently accessing processing node. ... Tektronix Inc

01/05/17 / #20170003321

Automatic frequency prescaler

A test and measurement instrument including an input port configured to receive an input signal. One or more divider circuits, coupled to the input port, employ a plurality of divide ratios such that each divide ratio scales an event signal indicating events in the input signal by a predetermined integer value. ... Tektronix Inc








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