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Jitter patents

This page is updated frequently with new Jitter-related patent applications. Subscribe to the Jitter RSS feed to automatically get the update: related Jitter RSS feeds. RSS updates for this page: Jitter RSS RSS

Fiber optic rotary joints, methods practiced thereby, and fiber optic devices


Fiber optic rotary joints, methods practiced thereby, and fiber optic devices

Electronic device and method for generating clock signals with and without frequency jitter for one source clock signal…

Freescale Semiconductor

Electronic device and method for generating clock signals with and without frequency jitter for one source clock signal…

Electronic device and method for generating clock signals with and without frequency jitter for one source clock signal…

Dell ProductsL.p.

Method for reducing execution jitter in multi-core processors within an information handling system

Date/App# patent app List of recent Jitter-related patents
 Referenceless clock and data recovery circuit patent thumbnailReferenceless clock and data recovery circuit
A circuit and method for referenceless cdr with improved efficiency and jitter tolerance by using an additional loop for frequency detection. Such an improved circuit includes a frequency detector for identifying whether an initial recovered clock signal is faster or slower than the actual bit rate of the received data stream.
Stmicroelectronics International N.v.

 Fiber optic rotary joints, methods practiced thereby, and fiber optic devices patent thumbnailFiber optic rotary joints, methods practiced thereby, and fiber optic devices
This invention provides a fiber optic rotary joint (20) for enabling the transmission of digital optical signals across the interface between facing surfaces (26, 29) of a rotor and a stator (21, 22), comprising: a plurality of light sources (42a, 42b, 42c, . .
Moog Inc.

 Electronic device and  generating clock signals with and without frequency jitter for one source clock signal generated by a single narrow-band source clock signal patent thumbnailElectronic device and generating clock signals with and without frequency jitter for one source clock signal generated by a single narrow-band source clock signal
The present application suggests an electronic device and method for generating clock signals with and without frequency jitter for one source clock signal generated by a single narrow-band source clock signal. The device comprises a random number generator to generate a random number signal varying in time which represents a divisor fraction signal; a signal mixer to mix the timely varying random number signal and a clock divisor signal and to output a mixed divisor signal; and a fractional clock divider to generate an output clock signal from a source clock signal, wherein the output clock signal has a frequency fout(t), which is substantially equal to the frequency fsource of the source clock signal being a narrow-band clock signal divided by a divisor d(t) represented by the mixed divisor signal..
Freescale Semiconductor, Inc.

 Method for reducing execution jitter in multi-core processors within an information handling system patent thumbnailMethod for reducing execution jitter in multi-core processors within an information handling system
A method of reducing execution jitter includes a processor having several cores and control logic that receives core configuration parameters. Control logic determines if a first set of cores are selected to be disabled.
Dell Products, L.p.

 Packet rate control and related systems for interactive music systems patent thumbnailPacket rate control and related systems for interactive music systems
Packet rate control methods and related systems are disclosed for interactive music systems. In certain embodiments, an interactive music client system combines captured audio data from audio inputs with audio input data from one or more peer interactive music client systems within an interactive music session and outputs the combined audio data to an audio output subsystem.
Jamkazam, Inc.

 Method and  transmitting voip frame patent thumbnailMethod and transmitting voip frame
A method for transmitting a voice over internet protocol (voip) by a wireless lan access point (ap) in a communication system includes when a voip frame is input from a terminal, determining whether a buffer for eliminating a jitter generated in a wireless network is used, and storing the voip frame in a queue, determining whether the buffer is used, and when the buffer is used, determining a time interval for transmitting the voip frame stored in the queue and a service start time, and transmitting the voip frame stored in the queue in a wired fashion based on the determined time interval and service start time.. .
Samsung Electronics Co., Ltd.

 Relay device, communication system and relay method patent thumbnailRelay device, communication system and relay method
A jitter occurring due to a difference in operation timing between a receiving part and a processing part is reduced. The receiving part receives reception data.
Mitsubishi Electric Corporation

 Frequency-stabilized random distributed feedback fiber ring laser with low intensity noise patent thumbnailFrequency-stabilized random distributed feedback fiber ring laser with low intensity noise
A method and apparatus for producing single mode random fiber ring laser by inducing random distributed feedback in a short section of the fiber ring to thereby enable single mode lasing while reducing frequency jitter and relative intensity noise. The random distributed feedback maybe achieved through deep refractive index modulation at a series of randomly distributed laser-irradiated points inscribed along the length of the induced random distributed feedback fiber.
University Of Ottawa

 Vco with low power, high speed and low jitter patent thumbnailVco with low power, high speed and low jitter
A vco circuit having low jitter and low pss (power supply sensitivity). The vco circuit includes a first ring oscillator stage, a second ring oscillator stage coupled to the first ring oscillator stage, and a vco input coupled to both the first ring oscillator stage and the second ring oscillator stage for receiving a control voltage.
Pico Semiconductor, Inc.

 System and  compensating for delay and jitter patent thumbnailSystem and compensating for delay and jitter
Methods and systems for compensating for delay or jitter are provided. The methods, for example, may include, but are not limited to receiving, by a processor, one or more data streams from one or more electronic devices, transmitting, by the processor, the one or more data streams to one or more displays, determining, by the processor, delay and jitter in the one or more data streams transmitted by the processor, and requesting, by the processor, at least one of the one or more electronic devices to adjust a respective data stream via a communication system..
Gm Global Technology Operations Llc


Media stream rate reconstruction system and method

In a media delivery system over an internet protocol (ip) network, a device for network jitter reduction and rate reconstruction using a means for receiving streams with jitter, buffering the streams, and playing out/streaming each stream at an original rate of respective streams.. .
Video Flow Ltd.


Despeckling a computer generated hologram

A method for despeckling a computer generated hologram (cgh) including producing a cgh, and jittering a location of an exit pupil of an optical system through which the cgh is imaged, relative to an observer's input pupil, so as to shift at least some speckles out of the exit pupil. A method for despeckling a computer generated holographic movie including computing a first modulation of a first holographic image in a holographic movie, and computing a second modulation of a second holographic image using an initial phase distribution used for calculating the first holographic image as an initial phase distribution used for calculating the second modulation.
Real View Imaging Ltd.


Shredder thickness with anti-jitter feature

A shredder includes a housing having a throat for receiving at least one article to be shredded, and a shredder mechanism received in the housing and including an electrically powered motor and cutter elements. The shredder also includes a detector that is configured to detect a thickness of the at least one article being received by the throat, and a controller that is configured to operate the motor to drive the cutter elements to shred the at least one article and to set a flutter threshold higher than the predetermined maximum thickness threshold, if the detected thickness is less than a predetermined maximum thickness threshold.
Fellowes, Inc.


Electronic device and protecting an electronic device against unauthorized use

An electronic device comprising a clock unit and a processing unit connected to the clock unit is described. The clock unit may deliver an output clock signal for operating the processing unit in accordance with the output clock signal.
Freescale Semiconductor, Inc.


Method and device for transmitting media stream

Method and device for transmitting media stream are provided to solve the problem of quality reduction in audio and video caused by packet loss, jitter, link breakage in a media stream transmission process in the conventional art. The method includes: a media capability negotiation between a calling terminal and a called terminal is conducted according to a link establishment request message transmitted by the calling terminal and a response message transmitted by the called terminal in response to the link establishment request message, and at least two media channels are established; a media stream is transmitted through a first media channel according to negotiated media capabilities; and when an abnormity is detected to appear in the media stream transmission of the first media channel, another one of the at least two media channels is selected as a second media channel, and the media stream is switched from the first media channel to the second media channel for transmission.
Zte Corporation


Low jitter device and system

A communication apparatus includes a serializer transmission circuit (tx) configured to receive a plurality of data channels in parallel, and the serializer transmission circuit (tx) transmits data serially as a data stream signal. A film bulk acoustic resonator (fbar) is coupled with the serializer transmission circuit (tx).
Avago Technologies General Ip (singapore) Pte. Ltd.


Content aware video resizing

In accordance with some embodiments, jitter accompanying video resizing, can be reduced or even eliminated by analyzing the content that is to be depicted and resizing based on the nature of the content being depicted. As a result, dominant objects in one frame can be handled in a way that reduces or eliminates video jitter or sliding..
Intel Corporation


Light scanning apparatus and image forming apparatus having the same

There is provided a light scanning apparatus that is free from main scanning jitter and allows size reduction of a deflector. The light scanning apparatus has a plurality of light sources, a deflector that deflects a plurality of light fluxes emitted from a plurality of light sources to scan a plurality of scanned surfaces along a main scanning direction, and a first stop arranged between the plurality of light sources and the deflector and provided with an aperture that regulates the width of the plurality of light fluxes with respect to the main scanning direction.
Canon Kabushiki Kaisha


System and detecting an aircraft jitter

The present invention relates to a system and method for detecting an aircraft jitter. The aircraft jitter detection system comprises: a jitter detection apparatus, which detects accelerations of pitch and yaw of the aircraft; a data acquisition apparatus, which obtains accelerations in two directions detected by the jitter detection apparatus; and a jitter determination apparatus, which extracts frequency spectrum and energy information of the jitter according to the accelerations in two directions obtained by the data acquisition apparatus, and determines whether the aircraft jitters..
Air China Limited


Method and rendering audio in wireless hearing instruments

An audio system such as a hearing assistance system includes an audio source device wirelessly communicating with one or more audio sink (destination) devices. The audio source and sink devices each include a sample clock for processing audio signal that is digitized and wirelessly transmitted.
Starkey Laboratories, Inc.


Method for error diagnosis of can communication

In a method for error diagnosis of can communication, the rolling counter values stored in the main electronic and sub-electronic control devices are compared with each other. When a rolling counter difference value lies within the predetermined error diagnosis reservation range, the determination on the error diagnosis for the corresponding can communication is reserved.
Continental Automotive Gmbh


Method and a device for low intrusive fast estimation of the bandwidth available between two ip nodes

A method and a device are provided for estimating the bandwidth available at the level of the ip layer for a stream between a source node and a destination node connected by a path made up of one or more links. The stream is transported by a heterogeneous telecommunications network that may include at least one radio segment over a portion of the path.


Method and reducing jitters of video frames

A method for reducing the jitters of video frames is provided, which includes the steps of dividing a frame into multiple blocks, selecting at least one block according to a variance of each block, determining a global motion vector of the frame in a direction according to the selected block(s), and performing motion compensation on the frame in the direction according to the global motion vector.. .
Faraday Technology Corp.


Equalization for high speed input/output (i/o) link

Described are systems and apparatuses to mitigate the timing margin loss caused by inter-symbol interference (isi) in high speed input/output (i/o) interfaces. Data dependent jitter (ddj) compensation techniques that may be utilized in the transmission or receiving circuitry of the i/o interface, including capturing bit data values of a data signal prior to an identified data transition, and delaying/advancing the transmission/reception the data signal or a corresponding clock signal based on these bit data values..


Clock recovery using quantized phase error samples using jitter frequency-dependent quantization thresholds and loop gains

A clock and data recovery device includes a phase detector, a quantizer, and a loop filter. The phase detector produces a phase error samples at an output representing a phase difference between a phase-adjusted clock and an input data signal.
Lsi Corporation


Hierarchical/lossless packet preemption to reduce latency jitter in flow-controlled packet-based networks

Methods, apparatus, and systems for implementing hierarchical and lossless packet preemption and interleaving to reduce latency jitter in flow-controller packet-based networks. Fabric packets are divided into a plurality of data units, with data units for different fabric packets buffered in separate buffers.


Clock and data recovery circuit

A clock and data recovery (cdr) circuit employing zero-crossing linearizing (zcl) technique. The circuit including a voltage controlled oscillator (vco), an inject-locked divider (ild), a variable delay unit, a linearized loop, a bang-bang loop, and a loop filter (lp).
Fudan University


Distortion measurement for limiting jitter in pam transmitters

Methods and test equipment for measuring jitter in a pulse amplitude modulated (pam) transmitter. Under one procedure, a first two-level pam signal test pattern is used to measure clock-related jitter separated into random and deterministic components, while a second two-level pam signal test pattern is used to measure oven-odd jitter (eoj).
Intel Corporation


Efficient power supply noise measurement based on timing uncertainty

A power supply noise measurement device for inclusion with an integrated circuit, the integrated circuit having a functional block, the noise measurement device comprising: a signal generator configured to provide a clock signal to the functional block, an antenna comprising a transistor, and being located proximate to the functional block, the antenna being configured to receive the clock signal from the signal generator, and a jitter estimator configured to provide a measure of the relative jitter between a signal output from the antenna and a reference clock signal, wherein the transistor of the antenna receives electrical power from the same power source that delivers power to the functional block.. .
St-ericsson Sa


Jitter buffer emulation for rtp streams in passive network monitoring systems

A method for emulating a jitter buffer by a telecommunications network monitoring probe includes determining an rtp timestamp for each of the plurality of received rtp packets. An actual time of arrival is determined for each of the plurality of rtp packets.
Tektronix, Inc.


Minimizing symmetrical latency impact by jitter buffer for tdm ces

A method and system are provided for allowing time-alignment of teleprotection measurements of power signals. Teleprotection observations are communicated between teleprotection ends through a packet switched network.
Alcatel-lucent Canada Inc.


Techniques for reduced jitter in digital isolators

An apparatus for communicating using an isolation channel includes a transmitter circuit having a first terminal configured to communicate a first signal. The first signal oscillates in response to a data signal having a first signal level and is constant in response to the data signal having a second signal level.
Silicon Laboratories Inc.


Apparatus for reducing periodic jitter in a ring oscillator

Described is an apparatus which comprises: a first power supply node to provide power supply current; a ring oscillator, coupled to the first power supply node, to generate an oscillating output according to change in the power supply current provided to the ring oscillator; and a second power supply node; a circuit, coupled to the second power supply node, to replicate time-average (e.g., dc) behavior of the ring oscillator; and a feedback mechanism having inputs coupled to the first and second power supply nodes, and an output to control current in the circuit.. .


Image synchronization of scanning wafer inspection system

An inspection system comprises a beam generator module for deflecting spots across scan portions of a specimen. The system also includes detection channels for sensing light emanating from a specimen in response to an incident beam directed towards such specimen and generating a detected image for each scan portion.
Kla-tencor Corporation


Increasing an area from which reconstruction from a computer generated hologram may be viewed

A method of enlarging an observation window from which the reconstruction from a computer generated hologram (cgh) may be viewed, including reproducing a cgh, and shifting a location of an exit pupil or observation window of an optical system reproducing the cgh. A method of increasing a viewing angle from which the reconstruction from a computer generated hologram (cgh) may be seen, including producing a plurality of instances of a cgh, projecting each one of the instances in a different direction so that a first exit pupil of a first instance is close to a second exit pupil of a second instance.
Real View Imaging Ltd.


Low latency digital jitter termination for repeater circuits

A circuit for reducing jitter in a digital signal is provided, comprising a clock and data recovery stage operative to receive an input data signal and generate in response thereto a recovered data signal, a recovered clock signal, and an unfiltered interpolator code; a filter stage operative to receive the unfiltered interpolator code and generate in response thereto a filtered clock signal; and a memory component operative to receive the recovered data signal, the recovered clock signal, and the filtered clock signal; sample the recovered data signal using the recovered clock signal; store the resulting sampled bits; and generate an output data signal by selecting stored bits using the filtered clock signal.. .
Semtech Canada Corporation


Multi-tier quality of service wireless communications networks

The present disclosure pertains to improved communication quality of service (qos) in communication networks. Higher service tiers may guarantee that a specific vocoder or bit rate is used.
Privilege Wireless Llc


Method and offline switch mode power supply with dithered switching frequency

A circuit for use in a switched mode power supply comprising includes an integrated circuit, a transformer, a capacitor, a low voltage circuit and a current limiting resistor. The ic jitters the switching frequency of the switch based on a bias voltage of the integrated circuit.
Landis+gyr, Inc.


Video stabilisation with deblurring

Methods of processing a frame in a video sequence of digital images are described, the methods comprising: determining a global motion vector for the frame relative to a previous frame in the sequence; deriving a jitter function from the global motion vector, the jitter function comprising an estimate of undesired motion of the frame relative to the previous frame; determining whether the frame is blurred above a first predetermined threshold; and if so, stabilising the frame using the jitter function and applying a deblur function to the frame.. .
St-ericsson Sa


Frequency jitter circuit and method

An oscillator generates a clock signal according to a voltage, a current and a capacitance, and a frequency jitter circuit and method use a random number to modulate the voltage, the current or the capacitance, or a count value to modulate the capacitance, to jitter the frequency of the clock signal.. .


Internal jitter tolerance tester with an internal jitter generator

The internal accumulated jitter generator may include a prbs generator, a digital loop filter, an accumulator, and a gain controller. The accumulated jitter generator also may be replaced with the internal sinusoid jitter generator.


Method and 2d/3d switchable displaying

A method for 2d/3d switchable displaying includes: real-time detecting a 3d display area; when a change of the 3d display area is detected, calculating a gradient coefficient based on a number of frame of change and a rate of the change of the 3d display area; adjusting a 3d image area and a 3d grating area based on the calculated gradient coefficient; and performing a stereoscopic display by the adjusted 3d image area and the adjusted 3d grating area. When the 3d display area starts a change and ends the change, the 3d display area gradually is switched to be 2d display and switched to be 3d display respectively, so that a gradient visual effect is achieved, and the problems of viewing image jitter and 3d effect mistake caused by pixel arrangement and hardware control in the 3d display area being not synchronized can be avoided..
Superd Co. Ltd


Jitter mitigating phase locked loop circuit

Systems and methods for efficient jitter mitigation or removal from a gapped signal. A phase mitigation module is employed to generate discrete correction values for modifying phase error signals detected between a gapped signal and a feedback signal of the pll.
Applied Micro Circuits Corporation


Jitter buffer

Methods, transmitter, receiver and computer program product for transmitting or receiving data of a real-time communication event, the data being transmitted from the transmitter to a jitter buffer of the receiver. At least one processing parameter describing how data is to be processed for transmission from the transmitter to the jitter buffer in the real-time communication event is determined at the transmitter.
Microsoft Corporation


Adapting a jitter buffer

A receiver receives a first data stream and a second data stream from a transmitting device over a packet-based communication network, the first data stream being of a first media type (e.g. Audio) and the second data stream being of a second media type (e.g.
Microsoft Corporation


System clock jitter correction

A system and method are provided for frequency multiplication jitter correction. The method accepts an analog reference signal having a first frequency, and using the analog reference signal, derives a system clock signal having a second frequency, greater than the first frequency.
Iq-analog Corporation


On die jitter tolerance test

A system and method are disclosed for performing on die jitter tolerance testing. A set of clocks are generated based on an input signal.
Parade Technologies, Inc.


Digital frequency band detector for clock and data recovery

A frequency band estimator for use in a data receiver or the like to enhance sinusoidal jitter tolerance by the clock and data recovery device (cdr) in the receiver. The detector uses two moving-average filters of different tap lengths that receive a gain-controlled signal from within the cdr.
Lsi Corporation


Jitter determination of noisy electrical signals

A jitter analysis system includes an electronic circuit having a noisy electrical signal with jitter along a baseline of the signal. The jitter analysis system also includes a sampling unit coupled to the noisy electrical signal that provides waveform samples of the noisy electrical timing signal and a jitter detection unit coupled to the sampling unit that provides baseline crossings of the noisy electrical signal, wherein the baseline crossings are determined from a selection of the waveform samples proximate the baseline of the signal.
Nvidia Corporation


Mechanism for facilitating dynamic phase detection with high jitter tolerance for images of media streams

A mechanism for facilitating dynamic phase detection with high jitter tolerance for images of media streams is described. In one embodiment, a method includes calculating stability optimization of an image of a media stream based on a plurality of pixels of two or more consecutive frames relating to a plurality of phases of the image, calculating sharpness optimization of the image, and selecting a best phase of the plurality of phases based on the stability and sharpness optimization of the image.
Silicon Image, Inc.


Adaptive buffers for media players

A system and method relate to determining am initial buffer size associated with a buffer and modifying the initial buffer size when jitter is detected. The initial buffer size may be determined and modified based on a maximum initial buffer size, and the maximum initial buffer size may be determined based on delays associated with storing data to the buffer.
Verizon Patent And Licensing Inc.


Image forming apparatus

An image forming apparatus suppressing jitter from occurring includes an image carrier, and a developer carrier supplying a developer to the image carrier, wherein the developer carrier includes an elastic layer having a thickness of 2.5 mm or less and having an md-1 hardness of 40 degrees or more.. .
Oki Data Corporation


Apparatus, system, and improving equalization with a software equalization algorithm

A system and method consistent with the present disclosure includes determining a jitter tolerance of a particular lane of a communication link corresponding to each of a plurality of equalization coefficients. Further, determining a particular equalization coefficient of the plurality of equalization coefficients that provides a maximum jitter tolerance.


Adjusting a jitter buffer based on inter arrival jitter

This disclosure relates to adjusting a jitter buffer at a wireless device based on inter-arrival-jitter (iaj). In one embodiment, an iaj value may be calculated for each of multiple received packets.
Apple Inc.


Clock and data recovery having shared clock generator

This disclosure provides a clock recovery circuit for a multi-lane communication system. Local clocks are recovered from the input signals using respective local cdr circuits, and associated cdr error signals are aggregated or otherwise combined.
Rambus Inc.


Dynamic object tracking for user interfaces

Systems and approaches provide for user interfaces (uis) that are based on object tracking. For example, the object may be a user's head or face.
Amazon Technologies, Inc.


Systems, devices and methods for tracking objects on a display

Systems, devices and methods for improved tracking with an electronic device are disclosed. The disclosures employ advanced exposure compensation and/or stabilization techniques.
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


Systems and methods of improving the quality of voip communications

Methods of addressing problems in a voice over internet protocol (voip) telephony system include collecting data on network events, analyzing the data, and taking corrective action when possible. If an ip telephony device is registering with the voip telephony system more frequently than necessary, which can indicate the ip telephony device is unnecessarily jumping between proxy services, the ip telephony device is instructed to re-initialize itself.
Vonage Network, Llc


Method and suppressing a deterministic clock jitter

A method for generating an output clock comprising: detecting a timing difference between a first input clock and a second input clock to generate a phase error signal; generating a masked phase error signal by masking the phase error signal based on a deterministic jitter indicator signal; generating an oscillator control signal by filtering the masked phase error signal; and generating the output clock in accordance with the oscillator control signal.. .
Realtek Semiconductor Corp.


Crystal oscillator circuit having low power consumption, low jitter and wide operating range

A crystal oscillator circuit includes: a crystal resonator circuit, generating an oscillation signal; an inverting amplification circuit, whose first amplifier input end is coupled to receive the oscillation signal, in which an inverting amplifier outputs an inverting amplified output signal; a bias circuit, having a bias circuit input end and a bias circuit output end, in which the bias circuit output end generates a bias circuit output signal controlled by the bias circuit input end, and the bias circuit output signal is coupled to a second amplifier input end; and a peak detection circuit, comparing the inverting amplified output signal with a reference signal, regulating a peak detector output signal, and feeding the peak detector output signal into the bias circuit input end, in which the bias circuit includes a self-adjusting circuit, for isolating a power supply from a second input end of the inverting amplifier.. .
Capital Microelectronics Co., Ltd.


Waveform conversion circuit with reduced jitter

An ac-inverting amplifier for a waveform conversion circuit includes a first mos transistor of a first conductivity type having a gate that receives an input signal, a drain that provides an inverted amplified output signal, and a source coupled to a first power supply voltage. A current source provides a first bias current and a second bias current in proportion to the first bias current.


Ethernet carrier group alarm (cga)

Novel tools and techniques for providing network state information to customer equipment. In some embodiments, an operations, administration, and management (“oam”) server might determine a status of a network connection between at least two network devices, might generate state information indicating the determined status of the network connection, and might send the state information to one or more customer equipment, using in-band signaling over a band between the at least two network devices.
Centurylink Intellectual Property Llc


Methods and circuits for reducing clock jitter

A communication system includes a continuous-time linear equalizer in the clock forward path. The equalizer may be adjusted to minimize clock jitter, including jitter associated with the first few clock edges after the clock signal is enabled.
Rambus Inc.


Clock spurs reduction technique

Aspects of the disclosure provide a circuit having a jittered clock generator. The jittered clock generator is configured to add jitter of a controlled characteristic to a first clock signal of a clock frequency to generate a second clock signal to be used by a transceiver for operating at a radio frequency.
Marvell World Trade Ltd


Synchronization processing device, synchronization processing method, and program

The present technology relates to a synchronization processing device, a synchronization processing method, and a program, which make it possible to achieve frequency synchronization in a shorter period of time. A jitter amount calculation unit calculates a jitter amount on the basis of a synchronization packet containing time information.
Sony Corporation


Voice communication method and apparatus and operating jitter buffer

Voice communication method and apparatus and method and apparatus for operating jitter buffer are described. Audio blocks are acquired in sequence.
Dolby Laboratories Licensing Corporation


Controller for generating jitters in a quasi resonant mode and generating jitters in a quasi resonant mode

A controller for generating jitters in a quasi resonant mode includes a feedback pin, a voltage generation unit, a pulse generator, and a comparator. The feedback pin is used for receiving a feedback voltage from a secondary side of a power converter.
Leadtrend Technology Corp.


Jitter-based transmission control method

A jitter-based transmission control method is disclosed. In the jitter-based transmission control method, several packets are sent applying a current congestion window size by at least one sender device through a network switch device.
National Central University


Fast motion detection with gpu

Disclosed are systems and methods for determining when to focus a digital camera to capture a scene. A current frame and a prior frame are differenced to determine a frame difference.
Motorola Mobility Llc


System and efficient post-processing video stabilization with camera path linearization

Described herein are methods, systems, and apparatus to process video images to remove jitteriness due to hand shake. In one aspect, a camera is configured to capture raw video composed of a series of successive image frames of a scene of interest.
Qualcomm Incorporated


System clock jitter correction

A system and method are provided for frequency multiplication jitter correction. The method accepts an analog reference signal having a first frequency, and using the analog reference signal, derives a system clock signal having a second frequency, greater than the first frequency.
Q-analog Corporation


High-speed low-jitter communication system

Communication apparatus and techniques, such as for optical communication, can include providing a reference frequency derived from an atomic energy level transition or a molecular energy level transition, generating at least two specified optical carrier signals at least in part using the reference frequency, coherently modulating the specified optical carrier signals using respective baseband information signals to provide respective coherently-modulated optical subcarriers. A combined optical information signal comprising the optical subcarriers can be transmitted to a receiver, such as via a fiber optic cable.
Raytheon Company


Frequency multiplier jitter correction

A system and method are provided for frequency multiplication jitter correction. The method accepts an analog reference signal having a first frequency, and using the analog reference signal, derives a system clock signal having a second frequency, greater than the first frequency.
Iq-analog Corporation


Method and system for synchronizing positron emission tomography (pet) detector modules

A detector module (50) for a positron emission tomography (pet) system (10) includes an optical transceiver (66) receiving an optical data stream from a pet processing system (48). The data stream includes a pulse train carrying a command to generate sync/reset pulses.
Koninklijke Philips N.v


Swept source optical coherence tomography and stabilizing phase thereof

In an embodiment, a computer 16, which generates tomographic images based on spectral interference signals detected by a light detector 15 from overlaid reference light emitted by a swept-source type light source 2 of a ss-oct, split, and then reflected by a fixed reference mirror 8 on one hand and object light reflected by an object to be measured 6 on the other, is caused to function to apply rough correction using a first correction means and then apply detailed correction using a second correction means, to stabilize the phases of the ss-oct. The phases can be stabilized by eliminating, without adding any expensive, complex hardware, the jitter between the wavelength scanning of a light source of ss-oct and the timing of collecting the scan data with the light detector as spectral interference signals..
University Of Tsukuba


Clock jitter and power supply noise analysis

Disclosed are a method, system, and/or apparatus to perform clock jitter and power supply noise analysis. In one embodiment, a method may include receiving a first signal, which may be a clock signal, then generating a second signal based on the first signal.
Nvidia Corporation


Circuits for dynamically adaptive bit-leveling by sweep sampling with automatic jitter avoidance

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.


Suppression of fixed-pattern jitter using fir filters

Fir filters for compensating for fixed pattern jitter, and methods of constructing the same, are disclosed. In one embodiment, a fir filter filters a signal having a desired frequency component, with the coefficients of the fir filter selected so that the filter is the equivalent of two combined fir filters, one having the desired frequency at the filter's peak output frequency, and a second in which the signal is delayed by a time equal to half of a period of a different frequency which is desired to be removed from the on signal.
Ess Technology, Inc.


Implementing a high quality voip device

A method is provided for voice over internet protocol (voip) devices to communicate over an internet protocol (ip) network. The method includes synchronizing the voip devices using one or more dual-tone multi-frequency (dtmf) codes over a telephone network, retransmissions of voice packets in bursts, retransmissions of voice packets following a time lag, adjusting the number of retransmissions based on quality of service, retransmission of a missing voice packet identified in a list received from a peer device, discarding low energy voice frames in a jitter buffer to prevent overflow, stopping playout at a low energy voice frame when the jitter buffer is below a minimum buffer size, and selective transmission and retransmission of voice packets based on their energy levels..
Arcsoft (shanghai) Technology Company, Ltd.


Beacon jitter prediction for wireless local area network (lan) devices

A method for activating a wireless communication device, the method may include receiving, by the wireless communication device, a sequence of periodic transmissions; estimating, for each periodic transmission of the sequence of periodic transmissions and before a reception of the periodic transmission, an expected time of arrival of the periodic transmission; calculating, for each periodic transmission, a timing difference attribute that is responsive to at least a difference between a timing of arrival of the periodic transmission and an expected time of arrival of the periodic transmission; selecting a selected periodic transmission out of the sequence of periodic transmissions, wherein the selected periodic transmission is associated with a smallest timing difference attribute out of the timing difference attributes associated with the periodic transmissions of the sequence of periodic transmissions; estimating, before a reception of a future periodic transmission that does not belong to the sequence of periodic transmissions, an estimated time of arrival of the future periodic transmission in response to the selecting of the selected periodic transmission and a periodic transmission period; determining a wakening time for wakening the wireless communication device in response to the estimated time of arrival of the future periodic transmission; and wakening the wireless communication device at the wakening time and searching for the future periodic transmission.. .
Dsp Group Ltd.


Frequency synthesis with gapper and multi-modulus divider

Systems and methods for frequency synthesis using a gapper and a multi-modulus divider. A frequency synthesizer may comprise a gapper, a multi-modulus divider and a phase locked loop (pll).
Applied Micro Circuits Corporation


Methods for dynamically adaptive bit-leveling by sweep sampling with automatic jitter avoidance

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.


Interaction device corrective parameters

The techniques described herein are directed to receiving parameters directed to correcting spatial error and/or jitter associated with an interaction device connected to a computing device. In some instances, the parameters are encrypted parameters that may be decrypted and consumed to correct the spatial error and/or the jitter associated with the interaction device.
Microsoft Corporation


Method for estimating network jitter in transmitting coded media data

The present invention relates to a method for estimating network jitter, which has the effect of more precisely estimating network jitter by using time information corresponding to a transmission time, which is transmitted from a transport layer in a transmitting end to a receiving end.. .
Electronics And Telecommunications Research Institute


Enhancing jitter buffer performance through radio level feedback

A jitter buffer in a voice over lte receiver may be influenced by radio level feedback (rlf) from both local and remote endpoints to preemptively adjust the jitter buffer delay in anticipation of predicted future losses that have a high probability of occurring. The radio events of the rlf and the scenarios that trigger the preemptive adjustments may be identified, and their use may be expressed in terms of mathematical formulas.


Method and processing a video signal

Method, apparatus and computer program product for processing a video signal, the video signal comprising a plurality of frames, wherein the frames of the video signal are received at a jitter buffer, and the frames are output from the jitter buffer at a variable output rate to account for jitter in the received frames. Variations in the output rate are controlled in dependence upon the visual information content of the video signal, the visual information content of the video signal being the portion of the video signal that is to be displayed when the video signal is played out..


Audio playback method, apparatus and system

An audio playback method is provided. The method includes identifying a captured audio data frame according to a type of the audio data frame and sending the identified audio data frame to an audio receiving end.


Adaptive motion instability detection in video

Output video frames, which may be stabilized or non-stabilized, may then be stored to a memory. In certain embodiments, video motion instability is scored based on a probability distribution of video frame motion jitter values..


Allocation of shared resources for virtualized networking

Technology for allocating network adapter resources such as air interface time and queue space amongst multiple virtual network stations or other virtual adapters is disclosed. As one example, the resource allocation may be based on analysis of the relative latency, jitter, or bandwidth considerations for applications communicating via each of the multiple virtual adapters.


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..


System and suppressing jitter in digital data signals including image, video and audio data signals

A system and method for suppressing jitter in a digital data signal in a signal processor system. The digital data signal has spaced apart byte allocation units wherein such spacing is increased such that unallocated bytes can be identified and removed from the digital data signal.


Method and source-synchronous signaling

A low-power, high-performance source-synchronous chip interface which provides rapid turn-on and facilitates high signaling rates between a transmitter and a receiver located on different chips is described in various embodiments. Some embodiments of the chip interface include, among others: a segmented “fast turn-on” bias circuit to reduce power supply ringing during the rapid power-on process; current mode logic clock buffers in a clock path of the chip interface to further reduce the effect of power supply ringing; a multiplying injection-locked oscillator (milo) clock generator to generate higher frequency clock signals from a reference clock; a digitally controlled delay line which can be inserted in the clock path to mitigate deterministic jitter caused by the milo clock generator; and circuits for periodically re-evaluating whether it is safe to retime transmit data signals in the reference clock domain directly with the faster clock signals..


Serial communication control circuit

In a serial communication control circuit, serial data transmitted from a transmission processing unit is switched to data generated in a mark ratio improvement data generation unit depending on a switch signal from the transmission processing unit, and is transmitted. Thereby, mark ratio improvement data is inserted in a transmission signal to improve a mark ratio during communication, thereby preventing reception signal's jitters from increasing..


System, device, and voice-over-ip communication

The present invention includes devices, systems, and methods of voice-over-internet protocol (voip) communication. For example, a method includes: receiving a data stream comprising a set of voip packets; and modifying a real time protocol (rtp) header of at least one of said voip packets to modify a jitter buffer delay of said data stream.


Optical scanning device, manufacturing the optical scanning device, and image forming apparatus

An optical scanning device includes a deflector configured to deflect a plurality of light beams emitted from a plurality of light emitters that are mutually spaced apart in a sub-scanning direction; an incident optical system configured to steer the plurality of light beams so as to be incident on the deflector; an imaging optical system configured to steer the plurality of light beams so as to be obliquely incident on a surface to be scanned and to form images of the plurality of light emitters on the surface to be scanned; and a correction unit configured to correct a jitter of at least one of the plurality of light beams in a main scanning direction on the basis of irradiation position information, in the sub-scanning direction, of at least one light beam among the plurality of light beams at a point corresponding to the surface to be scanned.. .

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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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