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Jitter patents

      

This page is updated frequently with new Jitter-related patent applications.




 Dual path timing wander removal patent thumbnailnew patent Dual path timing wander removal
A more cost effective wander jitter filter utilizes an excursion detector that receives a timing difference between a first signal and a second signal and supplies a first adjustment amount if a magnitude of the timing difference is above a predetermined threshold and otherwise supplies a second adjustment amount of zero. A summing circuit adjusts a magnitude of the timing difference by the first or second adjustment amount.
Silicon Laboratories Inc.


 Dual path timing jitter removal patent thumbnailnew patent Dual path timing jitter removal
A gap detector detects when a phase difference between a feedback signal and a clock signal is larger than a gap threshold. If the phase difference is larger than the gap threshold, then the phase difference is modified by subtracting a gap value from the phase difference.
Silicon Laboratories Inc.


 Facilitation of handover coordination based on voice activity data patent thumbnailFacilitation of handover coordination based on voice activity data
A more efficient network can be achieved by leveraging an adaptive dejitter buffer. The dejitter buffer can be dynamically adjusted based off a network data analysis.
At&t Mobility Ii Llc


 Facilitation of adaptive dejitter buffer between mobile devices patent thumbnailFacilitation of adaptive dejitter buffer between mobile devices
A more efficient network can be achieved by leveraging an adaptive dejitter buffer. The dejitter buffer can be dynamically adjusted based off a network data analysis.
At&t Mobility Ii Llc


 Method and  securing timing packets over untrusted packet transport network patent thumbnailMethod and securing timing packets over untrusted packet transport network
Methods, devices, systems, techniques, and computer program products are provided to secure timing synchronization to network nodes connected over an inherently insecure best effort public network with mechanisms to improve accuracy of timing protocols such as a statistically estimated edge timestamp offset encoded into the timing message to account for network jitter and processing latency variances incurred due to the security packet processing and encryption; to ensure slave network nodes shall only accept timing messages from trusted timing sources; to establish a secure tunnel with a trusted timing source for exchange of timing packets; to provide authentication and security for timing packets over the insecure public network; and to enhance message anonymity with variable payload padding.. .
Nokia Solutions And Networks Oy


 Facilitation of adaptive dejitter buffer patent thumbnailFacilitation of adaptive dejitter buffer
A more robust and efficient flow of voice or other content packets can be achieved by leveraging an adaptive dejitter buffer. The dejitter buffer can be dynamically adjusted according to network conditions including handover.
At&t Mobility Ii Llc


 Method for performing a bandwidth test for communications from a first network station to a second network station of a communication network and corresponding apparatuses for performing the method steps and corresponding computer program products patent thumbnailMethod for performing a bandwidth test for communications from a first network station to a second network station of a communication network and corresponding apparatuses for performing the method steps and corresponding computer program products
The disclosure describes a method for performing a bandwidth test for communications from a first network station (20) to a second network station (21) of a communication network. Such bandwidth test is based on the so-called prm model (in words probe rate model) in which iteratively a train of probe sample packets is transmitted from first station (20) to the second station (21) with a constant packet rate per iteration.
Hochschule Anhalt


 Dfe margin test methods and circuits that decouple sample feedback timing patent thumbnailDfe margin test methods and circuits that decouple sample feedback timing
Described are methods and circuits for margin testing digital receivers. These methods and circuits prevent margins from collapsing in response to erroneously received data, and can thus be used in receivers that employ historical data to reduce intersymbol interference (isi).
Rambus Inc.


 Synchronous transfer of streaming data in a distributed antenna system patent thumbnailSynchronous transfer of streaming data in a distributed antenna system
Method and apparatus for generating a jitter reduced clock signal from signal transmitted over a communication medium includes receiving, with high speed data interface circuitry, a modulated signal that includes a binary encoded data stream. A recovered clock signal is generated from the modulated signal and tracks the long-term drift in the modulated signal.
Commscope Technologies Llc


 Dynamic calibration of data patterns patent thumbnailDynamic calibration of data patterns
A system for dynamically calibrating operational parameters of a device under test (dut) includes a signal generator for generating a data pattern, a dut structured to generate a clock signal, an oscilloscope structured to measure margins of the generated clock signal compared to an eye-diagram produced on the oscilloscope from the data pattern, and a calibration unit. The calibration unit can produce a candidate a jitter value for the signal generator, receive a determination from the oscilloscope whether the data pattern generated with the candidate jitter value causes the dut to produce the generated clock signal within a pre-determined tolerance level, and modify the jitter value accordingly.
Tektronix, Inc.


Positioning photographic and video imaging and recording and system utilizing the same

A method and device are provided for positioning a mounted camera. The device includes a holding element that secures the mounted camera to the device, a wireless linkage at which remote attitude commands representing attitude changes of a remote driver are received, a local controller that interprets the remote attitude commands and generates local attitude commands that move the camera to mimic an orientation of the remote driver, and an attitude sensing element that senses a local attitude of the device.
Gopro, Inc.

Multiple transmitter controlling impedances of multiple transmitter system

A system includes a first transmitter, a second transmitter, a third transmitter and a controller, where the first transmitter is arranged for transmitting a first signal to a first transmission line, the second transmitter is arranged for transmitting a second signal to a second transmission line, and the third transmitter is arranged for transmitting a third signal to a third transmission line. The controller is coupled to the first transmitter, the second transmitter and the third transmitter, and is arranged for setting impedances of the first transmitter, the second transmitter and the third transmitter according to a coding jitter determination result..
Mediatek Inc.

Reducing errors due to non-linearities caused by a phase frequency detector of a phase locked loop

A phase frequency detector (pfd) includes a first circuit portion and a second circuit portion. The first circuit portion receives a reference signal and activates a first error signal if the phase of the reference frequency leads the phase of a feedback signal.
Aura Semiconductor Pvt. Ltd

System and determining the orientation of an inertial measurement unit (imu)

A system and method are provided for determining the orientation of an inertial measurement unit (imu). The method calculates a gyroscopic quaternion, and when the imu accelerometer reading is about equal to gravity (1 g), a field quaternion is calculated using imu accelerometer readings.
Sharp Laboratories Of America (sla), Inc.

Method of establishing an oscillator clock signal

A hybrid numeric-analog clock synchronizer, for establishing a clock or carrier locked to a timing reference. The clock may include a framing component.

Signal synchronization and latency jitter compensation for audio transmission systems

Techniques related to input and output signal synchronization and latency jitter compensation for audio systems are discussed. Such techniques may include determining a number of virtually buffered samples based on a detected latency between an audio capture thread and an audio playback thread and synchronizing an audio input signal and an audio output signal based on the number of virtually buffered samples..
Intel Corporation

Phase gradient optical coherence tomography angiography

Disclosed are methods of imaging vascular flow using optical coherence tomography. The methods involve calculating an oct phase difference and an oct phase gradient from interference fringes acquired from b-scans.
Oregon Health & Science University

De-jitter buffer update

A device includes a de-jitter buffer configured to receive a packet, the packet including first data and second data. The first data includes a partial copy of first frame data corresponding to a first frame of a sequence of frames.
Qualcomm Incorporated

Data processing

In a telecommunications network including at least a user device and a network node separated by at least a packet-switched part of the telecommunications network, the user device including a primary jitter buffer having a constant packet play-out rate, the network node including a secondary jitter buffer, incoming packets destined for the user device are received and passed through the secondary jitter buffer of the network node downstream towards the primary jitter buffer of the user device. The departure times of packets passing through the secondary jitter buffer of the network node downstream towards the primary jitter buffer of the user device are monitored.
Metaswitch Networks Ltd

System and object tracking anti-jitter filtering

Object tracking anti-jitter filtering systems and methods. A plurality of raw location points for a tracking tag attached to a tracked object is received.
Isolynx, Llc

System and a mems sensor

A measurement method includes generating, by a sensor, a response signal in response to an excitation signal. The method also includes generating a sampling clock signal in accordance with a pseudo-random jitter, and sampling the response signal in accordance with the sampling clock signal to determine a plurality of digital samples.
Infineon Technologies Ag

Video smoothing

The present disclosure provides a method and an apparatus for smoothing videos. With the solution above according to the present disclosure, if the player starts playing, then the vsync event detecting thread is initiated, if the vsync event detecting thread is resumed (awoken), then whether a frame of videos to be played which satisfies a predetermined condition is stored in the first queue is detected (checked) according to the timestamps corresponding to the frames of videos to be played in the first queue, and if the frame of videos to be played which satisfies the predetermined condition is detected, then the frame of videos to be played is rendered, which can which can reduce the jitter phenomena of videos in the process of playing the videos..
Le Shi Xin Electronic Technology (tianjin) Limited

Photographing dual-lens device and dual-lens device

A photographing method for a dual-lens device may include acquiring a first image collected at a first moment by a first image sensor and a second image collected at the first moment by a second image sensor; performing scene recognition on the first image and/or the second image, and performing depth estimation on the first image and the second image to determine a photographing environment; and when an instruction for a photographing operation is received, generating a picture using the multi-frame algorithm. When photographing is performed using a multi-frame algorithm, two frames of images can be collected at the same time using a dual-lens device, which can reduce impact caused by a jitter of the device or a motion of a target object, so that ghost detection and an elimination algorithm are not required, thereby reducing a photographing time..
Huawei Device Co., Ltd.

Crossbar switch and recursive scheduling

A crossbar switch has n input ports, m output ports, and a switching matrix with n×m crosspoints. In an embodiment, each crosspoint contains an internal queue (xq), which can store one or more packets to be routed.

Load responsive jitter

A controller for a power converter that may sense whether the power converter is in a light load condition. If the power converter is a light load condition, the switching frequency may be within the audible noise range.
Power Integrations, Inc.

Frequency generator

A frequency generator for providing one or more clock signals with reduced phase jitter can include a phase-locked loop (ni) configured to couple with a crystal and to provide a first clock signal, a multiplier circuit configured to receive the first clock signal and to provide a second dock signal, the second clock signal having a higher frequency than the first clock signal, wherein the multiplier circuit includes a second pll, and wherein the second clock signal is an output frequency signal of the frequency generator.. .
Intel Deutschland Gmbh

Systems and methods for reducing electromagnetic interference using switching frequency jittering

System and method are provided for regulating a power converter. The system includes a signal processing component configured to receive a first input signal and a second input signal, process information associated with the first input signal and the second input signal, and output a drive signal to a switch based on at least information associated with the first input signal and the second input signal.
On-bright Electronics (shanghai) Co., Ltd.

Automatic device operation and object tracking based on learning of smooth predictors

The disclosure provides an approach for predicting trajectories for real-time capture of video and object tracking, while adhering to smoothness constraints so that predictions are not excessively jittery. In one embodiment, a temporally consistent search and learn (tc-searn) algorithm is applied to train a regressor for camera planning.
Disney Enterprises, Inc.

Systems and methods for providing fast video channel switching

A video decoding device receives video images encoded as video signal data for a selected one of multiple channels, for example provided by a cable tv or satellite tv service. Responsive to a request to switch from viewing a previously-selected channel to viewing a newly-selected channel, the video decoding device enters a first mode for displaying a preview representation of the video signal data received for the newly-selected channel.
Entropic Communications, Llc

Cascaded camera motion estimation, rolling shutter detection, and camera shake detection for video stabilization

An easy-to-use online video stabilization system and methods for its use are described. Videos are stabilized after capture, and therefore the stabilization works on all forms of video footage including both legacy video and freshly captured video.
Google Inc.

Communication method and communication apparatus

The present disclosure provides an orthogonal codes based code division multiplexing method of performing the code division multiplexing of demodulation reference signals in multiple layers of resource blocks by using orthogonal matrices, the method comprising: changing the order of chips in particular rows of a first orthogonal matrix to obtain a second orthogonal matrix with the changed order of chips; and multiplying the chips in respective rows of the second orthogonal matrix by the demodulation reference signals in corresponding layers of resource blocks correspondingly in the time direction to obtain code division multiplexing signals. The technical scheme of the present disclosure can improve the power jitter situation of downlink signals on the time, thereby the usage efficiency of the power amplifier at the base station side can be improved..
Sun Patent Trust

Switching power supply device control circuit and switching power supply device

A switching power supply device enables measures against noise even when the conducted emi standard is expanded to a low frequency region. A jitter control circuit, configured so as to reduce generation of conducted emi noise by giving jitter (frequency diffusion) to a switching frequency which drives a switching element, upon receiving a feedback voltage representing the condition of a load, expands the diffusion width of the switching frequency in stages in accordance with a shift from a fixed frequency region of a maximum oscillation frequency, through a frequency reduction region, to a fixed frequency region of a minimum oscillation frequency.
Fuji Electric Co., Ltd.

Audio processing method and apparatus

Audio processing methods and apparatus are provided. An audio processing method may include: receiving audio data packets; buffering the audio data packets to a buffer; reading the audio data packets from the buffer and playing the audio data packets; accumulating an actual total playing time length and a total sampling time length of the audio data packets that currently have been read from the buffer and have been played; and suspending reading and playing, when a sum of sampling time lengths of audio data packets that are buffered and unread in the buffer is less than or equal to a first threshold, until a sum of sampling time lengths of the audio data packets in the buffer that are unread is greater than or equal to a current network jitter estimated value..
Tencent Technology (shenzhen) Company Limited

Low jitter pulse output for power meter

There is provided an energy consumption meter device (1) comprising the processor (8) arranged to receive input data from the sampling unit. The processor calculates at a calculation step [n] an energy contribution value using Δe using a sampled voltage value and a sampled current value.
Freescale Semiconductor, Inc.

Digital auto compensation for voltage regulators

Auto-compensation—for compensating voltage regulators generating a regulated output voltage—may be performed dynamically by determining various coefficients of a compensation function used in compensating the power regulator, based at least on assumptions about the structure of the regulator and corresponding filters. At least the dc loop gain and the position of the compensation zeros may be determined without requiring any prior knowledge of the values of the various components of the system.
Intersil Americas Llc

Characterization and evaluation of optical elements under vibrational loading

Systems and related methods are provided to perform optical characterization of system under tests (sut), including one or more optical elements (oe), for various purposes including evaluation of optical resolution needed to distinguish image elements, blur, line of sight jitter, and/or pointing stability. Various testing systems and methods are provided including an embodiment having a vibration loading system (vls), a first acceleration sensor coupled with the vls, and a mounting structure adapted to receive the sut.
The United States Of America As Represented By The Secretary Of The Navy

Systems and methods for last mile optimization of transmission of real-time data

The present invention relates to systems and methods for last mile optimization for the transmission of real-time data. Pseudo-packets are sent to a last mile optimizer located at each of several ‘best’ servers.
Agora Lab, Inc.

Circuit for dynamically adaptive bit-leveling by incremental sampling, jitter detection, and exception handling

A circuit and method for implementing a adaptive bit-leveling function in an integrated circuit interface is disclosed. During a calibration operation, a pre-loaded data bit pattern is continuously sent from a sending device and is continuously read from an external bus by a receiving device.
Uniquify, Inc.

Dielectric loaded fluids for high voltage switching

This disclosure relates to methods and systems to reduce high voltage breakdown jitters in liquid dielectric switches. In particular, dielectric liquids have been produced that contain a suspension of nanoparticles and a surfactant to reduce the breakdown jitter.
The Curators Of The University Of Missouri

Characterization and evaluation of optical elements under vibrational loading

Systems and related methods are provided to perform optical characterization of system under tests (sut), including one or more optical elements (oe), for various purposes including evaluation of optical resolution needed to distinguish image elements, blur, line of sight jitter, and/or pointing stability. Various testing systems and methods are provided including an embodiment having a vibration loading system (vls), a first acceleration sensor coupled with the vls, and a mounting structure adapted to receive the sut.
The United States Of America As Represented By The Secretary Of The Navy

Apparatuses, methods, and systems for jitter equalization and phase error detection

Embodiments include apparatuses, methods, and systems for jitter equalization and phase error detection. In embodiments, a communication circuit may include a data path to pass a data signal and a clock path to pass a clock signal.
Intel Corporation

Adaptive jitter buffer

The present disclosure relates to an adaptive jitter buffer for buffering audio data received via a network. The adaptive jitter buffer comprises an adaptive audio sample buffer, which comprises an adaptive resampler that receives a number of audio samples of the audio data and that outputs a first number of audio samples, which are resampled from the received number of audio samples according to a resampling factor, an audio sample buffer that buffers audio samples, wherein the outputted first number of audio samples are written to the audio sample buffer during an input access event and a second number of audio samples are read from the audio sample buffer during an output access event, and an audio sample buffer fill quantity controller that controls a fill quantity of the audio sample buffer based on controlling the resampling factor of the adaptive resampler..
Binauric Se

Jitter-based clock selection

In a first clock frequency multiplier, multiple injection-locked oscillators (ilos) having spectrally-staggered lock ranges are operated in parallel to effect a collective input frequency range substantially wider than that of a solitary ilo. After each input frequency change, the ilo output clocks may be evaluated according to one or more qualifying criteria to select one of the ilos as the final clock source.
Rambus Inc.

System and methods for computer clock synchronization

A clock synchronization system and methods including an algorithm, or protocol, that synchronizes to any source of time without the need of estimating frequency errors and only performing frequency adaptions. Specifically, a clock synchronization protocol synchronizes networked nodes without explicit estimation of the clock skews and steep corrections on the time.
Cornell University

Method and data acquisition with waveform trigger

Digital signal acquisition system is triggered when an input waveform matches a known reference waveform. This is achieved by calculating a stream of error metric values defined as a sum of absolute values of differences between incoming and reference samples.
Guzik Technical Enterprises

Multi-wire signaling with matched propagation delay among wire pairs

In a multi-wire channel that includes at least three wires, each unique wire pair of the multi-wire channel has approximately the same signal propagation time. In this way, jitter can be mitigated in the multi-wire channel for signaling where, for a given data transfer, a differential signal is transmitting on a particular pair of the wires and every other wire is floating.
Qualcomm Incorporated

Forwarded clock jitter reduction

In some embodiments, a differential amplifier with duty cycle correction is provided.. .
Intel Corporation

Method & synthesis of wideband low phase noise radio frequency signals

An apparatus for synthesizing wideband radio frequency signals in the microwave region has mostly digital components. The apparatus processes and converts a signal from a stable single-frequency electrical oscillator into a lower or higher frequency electrical signal without using analog multiplier or mixer circuits.
Star Dynamics Corporation

Post-processing reduction of fixed pattern artifacts and trigger jitter in swept-source optical coherence tomography

Disclosed herein are methods and systems for aligning swept-source optical coherence tomography (ss-oct) spectral interferograms to a reference spectral interferogram based on signal information (e.g., amplitude or phase) at a fixed-pattern noise location to reduce residual fixed-pattern noise and improve the phase stability of ss-oct systems.. .
Oregon Health & Science University

Source agnostic audio/visual analysis framework

Systems and methods for determining the quality of video playback are provided. Errors in video playback may be detected at any point of transmission at which video can be extracted regardless of the means of transmission or the type of device through which transmission occurs thus allowing for testing of a plurality of devices or transmission means with the same testing system.
Cinder Solutions, Llc

Controlling clock measurement with transistors, capacitor, opamp, adc, external enable

A measurement system includes a current source that is arranged to generate a current pulse to charge a capacitor as a function of an input clock signal. The accumulated charge on the capacitor is converted to a sample (e.g., resultant digital value) by an adc (analog-to-digital converter).
Texas Instruments Incorporated



Jitter topics:
  • Duty Cycle Correction
  • Differential Amplifier
  • Duty Cycle
  • Frequency Detector
  • Photosensitive Drum
  • Simulation
  • Cell Phone
  • Data Packet
  • Mean Opinion Score
  • Network Communication
  • Signal Processing
  • Sequencing
  • Transmitter
  • Asynchronous
  • High Performance Serial Bus


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    This listing is a sample listing of patent applications related to Jitter for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Jitter with additional patents listed. Browse our RSS directory or Search for other possible listings.


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