77results about "Cross-talk reduction" patented technology

Disclosed are a noise suppression method and apparatus for power line carrier communication, and a storage medium. The method comprises: acquiring a frequency domain signal of power line carrier communication, and performing interference detection on subcarriers within a target frequency band in the frequency domain signal to obtain a target effective subcarrier, the target frequency band being determined on the basis of the frequency domain signal; on the basis of on the target effective subcarrier, performing noise reduction processing on channel estimation results at the subcarriers within the target frequency band; and, on the basis of the channel estimation results before and after the noise reduction at the subcarriers within the target frequency band, performing compensation on communication data after channel estimation in the power line carrier communication, so as to suppress noise in the power line carrier communication. According to the method, noise within the target frequency band of the frequency domain signal in the power line carrier communication is effectively detected and suppressed, so that the noise suppression effect of power line carrier communication is improved, thereby improving the quality of the power line carrier communication.

A system may include a signal replica transmitter configured to generate a replica signal based on a first signal, and an echo canceller configured to remove crosstalk from a second signal. The echo canceller may include a first current mode logic (CML) circuit configured to receive a first set of input signals, and a second CML circuit configured to receive a second set of input signals, wherein a first output from the first CML circuit and a second output from the second CML circuit may be combined to remove the crosstalk from the second signal and generate an output signal from the echo canceller.

Disclosed is an inter-channel interference attenuation circuit system, which includes a plurality of channels provided between a memory and a processor and that transmits data received from the memory to the processor, and an interference attenuation circuit module connected one by one to each of the channels, and each of the channels is, a victim channel with respect to the connected interference attenuation circuit module, and an aggressive channel with respect to an adjacent interference attenuation circuit module, which is an interference attenuation circuit module connected to an adjacent channel which is interfered with by its own data transmission, and each of the interference attenuation circuit modules, adjusts an output signal of the connected victim channel based on the interference attenuation circuit module and the number of adjacent channels.

Examples described herein relate to an Ethernet physical layer transceiver (PHY) circuitry to generate a training signal for transmission for a lane based on a pseudorandom bit sequence (PRBS) polynomial and seed.

Methods, systems, and devices for crosstalk cancellation for signal lines are described. In some examples, a device (e.g., a host device or a memory device) may generate a first signal and may invert the first signal to obtain an inverted first signal. The device may obtain a second signal based on attenuating a first range of frequencies of the inverted first signal and a second range of frequencies of the inverted first signal, where the first range of frequencies is below a first threshold frequency and the second range of frequencies is above a second threshold frequency that is greater than the first threshold frequency. The device may transmit the first signal via a first signal line of a set of signal lines and the second signal line via a second signal line of the set of signal lines.

Provided is an apparatus for controlling a communication signal of a photovoltaic power generation system. The apparatus includes a memory storing at least one program therein, and at least one processor configured to execute the at least one program, wherein the at least one processor is further configured to acquire data on a communication status by monitoring a plurality of devices included in the photovoltaic power generation system, derive information related to communication of each of the devices based on the acquired data, and control a communication signal of at least one of the devices based on one of the acquired data or the information related to the communication.

This communication system using a heating line may perform communication by dividing a time section into a heating section and a communication section in communication between a control panel and a sensor unit connected by the heating line. The present invention enables communication to be performed by dividing a time section into a heating section and a communication section in communication between a control panel and a sensor unit, thereby preventing a problem that a communication signal is blocked or distorted in power communication in which a heating line is connected. The present invention enables communication to be performed by dividing a time section into a heating section and a communication section, thereby solving problems of excessive heating caused by continuous supply of power to the heating line and high temperature maintenance costs.

A differential data transmission system (200; 700), comprising: a source (201) configured to transmit a differential signal containing data; a load (204) configured to receive the differential signal; and a common-mode suppressor (300; 400; 500; 702) comprising a long, wound differential transmission line configured to carry the differential signal from the source to the load; wherein a length of the differential transmission line is at least greater than one tenth of the wavelength of the differential signal, which is transmitted through the differential transmission lines in a predetermined operating frequency range of the differential signal, further comprising a protection circuit (202; 701) against electrostatic discharges, which is connected to the first (303; 703) and second (304; 704) input pins of the common-mode suppressor (300; 400; 500; 702) and which is configured to provide protection against shocks from electrostatic discharge.

A communication system for use in a vehicle includes a first communication device configured for operation in the vehicle, and a second communication device configured for operation in the vehicle. A cable assembly communicatively couples the first communication device with the second communication device. A signal suppressing device is coupled to the cable assembly at a location proximate to an end of the cable assembly. The signal suppressing device is configured to suppress signals in a frequency range corresponding to in-band radiated emission (RE).

The transmitter transmits a first signal at a first communication rate over a first cable. The receiver receives a second signal over the first cable simultaneously with transmitting the first signal over the first cable. The second signal is transmitted by another device at a second communication rate that is lower than both (i) the first communication rate and (ii) a third communication rate at which a third signal is being transmitted over the second cable that causes crosstalk in the second signal received over the first cable. Receiving the second signal at a second communication rate that is lower than the third communication rate facilitates mitigating crosstalk in the second signal caused by transmission of the third signal at the third communication rate over the second cable.

The invention provides a synchronous data crosstalk effect optimization method and system and electronic equipment. The method comprises the following steps: respectively measuring a jump edge jitter range of a victim channel and a jump edge jitter range of an applicator channel; any channel is selected from the victim channel and the applicator channel, and a first delay module is additionally arranged at the sending end of the selected channel; a second delay module is additionally arranged at the tail of the other unselected channel; configuring the first time delay module and the second time delay module based on the jump edge jitter range of the victim channel and the jump edge jitter range of the applier channel; and performing crosstalk effect optimization on the synchronous data of the two channels based on the configured first delay module and second delay module. The method can solve the problems that an existing synchronous data crosstalk effect optimization scheme is high in responsible degree and poor in optimization effect.

Embodiments of the present invention provide systems, devices and methods for identifying and selecting a preferred frequency spectrum for communication using a wireline media. In certain embodiments, a process of sensing traffic on the wireline media from other service is described and subsequent selection of a preferred frequency range in which interference from these other services is reduced.

A communication circuit for reducing recoil noise of an eye open monitor comprises a first sampler, a second sampler and a pre-amplifier, the first output end and the second output end of the pre-amplifier are connected with the first input end and the second input end of the first sampler respectively, and the first input end and the second input end of the second sampler are connected with the first output end and the second output end of the pre-amplifier respectively. An input signal is applied to the preamplifier and a first input of the second sampler, respectively, and when an edge of the sub-clock precedes an edge of the master clock, the first sampler samples a data value by comparing the input signal with a second reference voltage at the edge of the sub-clock, the second sampler samples a data value by comparing the input signal with a first reference voltage at an edge of the master clock, and when an edge of the sub-clock lags the edge of the master clock, the second sampler samples a data value by comparing the input signal with a second reference voltage at an edge of the sub-clock, a first sampler samples a data value by comparing an input signal to a first reference voltage at an edge of a master clock.

The application discloses an image transmission and control method and device based on dynamic EQ compensation and anti-nuclear radiation, and belongs to the field of data transmission. The application calculates a first loss coefficient for quantifying the influence of environmental nuclear radiation on the transmission performance of unshielded twisted pair, calculates a second loss coefficient for quantifying the comprehensive influence of all environmental factors and signal frequency on the transmission performance of unshielded twisted pair, and fuses the two coefficients. Then, based on the signal frequency of the target video signal and the fused loss coefficient, the cable attenuation coefficient of the unshielded twisted pair is calculated according to a preset composite attenuation model, the amplitude attenuation factor of the unshielded twisted pair is calculated according to a preset cable transmission function, and the target video signal transmitted through the unshielded twisted pair is compensated. The technical effects of dynamically adapting to a complex nuclear radiation environment, dynamically and accurately compensating signal attenuation, and significantly improving the transmission quality and stability of the unshielded twisted pair video signal are realized.

The invention relates to a method for crosstalk compensation of output signals (SL1 (t), SL2 (t)) of at least one small signal converter for measuring electrical quantities on at least two conductors (L1, L2), at least one of which causes crosstalk,-wherein when a sinusoidal electrical quantity is fed into one of the conductors (L1, L2), the output signals (SL1 (t), SL2 (t)) of the small signal converter are compensated for the crosstalk of the output signals (SL1 (t), SL2 (t)). A crosstalk amplitude and a crosstalk phase angle of the small signal converter on the other conductor (L1, L2) are determined,-wherein for each small signal converter the crosstalk (CrCap) at a phase angle of 90 DEG (or-90 DEG) is determined from the product of the measured crosstalk amplitude and the sine of the measured crosstalk phase angle,-wherein for each small signal converter the crosstalk (CrCap) at a phase angle of 90 DEG (or-90 DEG) is determined from the product of the measured crosstalk amplitude and the sine of the measured crosstalk phase angle,-wherein the crosstalk (CrCap) at a phase angle of 90 DEG (or-90 DEG) is determined from the product of the measured crosstalk amplitude and the sine of the measured crosstalk phase angle. The crosstalk (Cind) at a phase angle of 0 DEG (or 180 DEG) is determined from the product of the measured crosstalk amplitude and the cosine of the measured crosstalk phase angle,-wherein, in order to form the compensated output signal (SL1 comp (t), SL2 comp (t)) of each small signal converter considered, the crosstalk (Cind) is determined at a phase angle of 0 DEG (or 180 DEG). From the uncompensated output signal (SL1 (t), SL2 (t)) of the small signal converter, the product of the electrical quantity on the respective other conductor (L1, L2) and the crosstalk (Cind) at a phase angle of 0 or 180 DEG and the product of the electrical quantity on the respective other conductor (L1, L2) phase shifted by 90 DEG and the crosstalk (CrCap) at a phase angle of + 90 DEG or-90 DEG are subtracted.

An active single-ended transmission cable is disclosed. The active single-ended transmission cable allows connection between a first and a second electronic device and comprises a first port, a second port, and a transmission wire. The first or second port is used for receiving or transmitting a differential signal between the first and the second electronic devices, and for converting between a differential signal and a single-ended signal. The transmission wire is used for transmitting the single-ended signal. This allows the conversion between the received or transmitted differential signal at the first and second ports into the single-ended signal so as to allow the transmission of the single-ended signal within the transmission wire.

The in-vehicle Ethernet physical layer (PHY) transceiver (32) includes an analog front end (FE-46) and a digital processor (44). The FE is configured to receive analog Ethernet signals via a physical Ethernet link (36) while the Ethernet PHY transceiver is operating in the vehicle (24), and is configured to convert the received analog Ethernet signals into digital signals. The digital processor is configured to: maintain one or more noise distributions (84) that characterize noise signals of corresponding predefined noise types that are expected to disrupt the received analog Ethernet signals; classify actual noise signals present in the digital signals into one of the noise types using the noise distributions; and apply noise mitigation operations selected in response to the given noise type in response to determining that the actual noise signal matches a given noise type among the predefined noise types.

This application relates to signal correction for serial interfaces. A signal correction circuitry is described that improves the integrity of data transmitted over a serial data interface without interrupting communication between connected devices. The signal correction circuitry includes edge correction circuitry that accelerates rising and falling edges of a data signal. The signal correction circuitry also includes DC compensation circuitry that boosts the level of the data signal.

Provided is an electronic device including a first signal line configured to receive a first reception signal, a second signal line configured to receive a second reception signal, a third signal line configured to receive a third reception signal having a correlation with the second reception signal, the third signal line being positioned between the first signal line and the second signal line, a first crosstalk filter connected to the second signal line and configured to output a first compensation signal by applying a pole frequency and a gain coefficient to a second reception signal, and an adaptive filter configured to receive the second reception signal and a first final signal corresponding to the first reception signal, and to adjust the pole frequency and the gain coefficient of the first crosstalk filter based on the second reception signal and the first final signal.

Certain aspects of the present disclosure provide techniques and apparatus for power leakage mitigation in transmit diversity. A method of controlling transmit diversity includes detecting that a first compensator among a plurality of compensators is in transmit mode; outputting a first control signal to the first compensator to enable the first compensator for transmit mode in response to detecting that the first compensator is in transmit mode; and outputting a second control signal to a second compensator among the plurality of compensators to disable the second compensator from operating in transmit mode in response to detecting that the first compensator is in transmit mode.

A physical layer transceiver, for connecting a host device to a wireline channel medium having a cable length, includes a host interface for coupling to a host device, a line interface for coupling to the channel medium, and filter circuitry operatively coupled to the line interface. The filter circuitry includes a plurality of filter segments, fewer in number than a total number of link segments in the cable length. Individual filter segments in the plurality of filter segments are configurable to correspond to individual link segments and are separately controllable from other filter segments. Control circuitry detects a change of transmission conditions in a particular link segment, and upon detection of the change of transmission conditions, changes a configuration of one of the plurality of filter segments to cause an alteration in filtering of signals in the particular link segment at which the change of transmission conditions is detected.

The invention relates to a method for crosstalk compensation for output signals (S L1 (t), S L2 (t)) of at least one low-power instrument transformer for measuring electrical quantities on at least two conductors (L1, L2), at least one of which causes crosstalk, wherein: - while a sinusoidal electrical quantity is fed in on one of the conductors (L1, L2), a crosstalk amplitude and a crosstalk phase angle of the low-power instrument transformer on the other conductor (L1, L2) is determined; - cross-coupling (Cr Cap ) at a phase angle of 90° (or -90°) is determined from the product of the measured crosstalk amplitude and the sine of the measured crosstalk phase angle for each low-power instrument transformer; - cross-coupling (Cr ind ) at a phase angle of 0° (or 180°) is determined from the product of the measured crosstalk amplitude and the cosine of the measured crosstalk phase angle for each low-power instrument transformer; - to form a compensated output signal (S L1comp (t), S L2comp (t)) of each low-power instrument transformer considered, the product of the electrical quantity on the other conductor (L1, L2) and the cross-coupling (Cr ind ) at a phase angle of 0° or 180° and the product of the electrical quantity phase-shifted by 90° on the other conductor (L1, L2) and the cross-coupling (Cr cap ) at the phase angle of +90° or -90° are subtracted from an uncompensated output signal (S L1 (t), S L2 (t)) of said low-power instrument transformer.

Disclosed is a wired cooperative multiple input multiple output (CMIMO) signal transmission method based on a multimode transmission line. The method includes the following step: selecting a type of the multimode transmission line; constructing a wired CMIMO transmission system based on the multimode transmission line; performing channel measurement to obtain a transmission coefficient matrix; judging whether the transmission coefficient matrix satisfies a full rank and reversibility and has a condition number satisfying conditions; optimizing a structure of the multimode transmission line, a multiport excitation structure, and a multiport receiving structure to obtain the transmission coefficient matrix which satisfies a full rank and reversibility and has a condition number satisfying conditions; making the transmission coefficient matrix be equivalent to a channel matrix of the wired CMIMO transmission system; and completing signal excitation, transmission and reception of the wired CMIMO transmission system based on the multimode transmission line.

An example method can include determining, by a compiler based at least in part on crosstalk data indicative of a rate of crosstalk between a first data transmission path and a second data transmission path, a timing of a first data transmission over the first data transmission path. The example method can include providing, by the compiler, one or more computer-readable instructions to cause one or more processor devices to initiate the first data transmission according to the timing.

Examples described herein relate to an Ethernet physical layer transceiver (PHY) circuitry to generate a training signal for transmission for a lane based on a pseudorandom bit sequence (PRBS) polynomial and seed.

This communication system using a power source line can perform, in communication between a control panel and a sensor control unit connected by the power source line, communication by dividing a time period into a power source supply period and a communication period. The present invention can prevent, in communication between a control panel and a sensor control unit, problems of communication signals being blocked or distorted in power source line-connected power communication by dividing a time period into a power source supply period and a communication period. The present invention can divide a time period into a power source supply period and a communication period, and thus can solve problems of excessive heat generation and greatly increased temperature-maintenance costs caused by continuously supplying a power source to a power source line.

A semiconductor device includes a first encoding circuit encoding data to generate encoding data including one or more symbol groups, each of the symbol groups including an upper symbol and a lower symbol; and a second encoding circuit generating transmission data by performing an operation on previous transmission data and the encoding data. The first encoding circuit encodes the data to prevent a signal on each of one or more of aggressor lines from transitioning when a signal on a victim line transitions. A plurality of data lines of the semiconductor device are arranged in a grid pattern, the victim line is a data line included in an inner row among the plurality of data lines, and each of the aggressor lines is a data line located adjacent the victim line. The upper symbol corresponds to the victim line and the lower symbol corresponds to the aggressor lines.

Disclosed herein are embodiments of an audio device having a first audio channel configured to transmit a first audio signal and at least one second audio channel configured to transmit at least one second audio signal. The first audio channel includes a first audio cable and a first noise masker for generating a masking noise, where the first noise masker is configured to introduce the masking noise into the first audio channel to mask a crosstalk level of a first crosstalk signal inflicted in the first audio channel by one or more of the at least one second audio signal.

A connector device includes a plurality of connectors each configured to connect a conductor of a first cable to a conductor of a second cable. The connectors each include a body portion having conductor receiving portions each structurally configured to receive a conductor of one of the cables, a crosstalk mitigation portion configured to mitigate crosstalk, the crosstalk mitigation portion including a connection portion structurally configured to connect a first one of the conductors to a second one of the conductors, and the crosstalk mitigation portion is configured with a crosstalk mitigating shape configured to reduce a level of crosstalk to the cables.

The invention relates to a signal processing arrangement (10) and a method for compensating or pre-compensating cross talk in a communication system (100) having M transmitters (Tx-1 - Tx-M) and N receivers (Rx-1 - Rx-N), the signal processing arrangement comprising a signal providing unit (2) configured to provide a first and a second set of digitized signals (HR1, HR2, LR3-LR6) based on at least some of the output signals (Rout-1 - Rout- 6) of the receivers or at least some of the input signals (In 1- In M) to be supplied to the transmitters (Tx-1 - Tx-M), wherein the digitized signals (HR1, HR2) of the first set of digitized signals have a higher resolution and / or sampling rate than the digitized signals (LR3-LR6) of the second set of digitized signals; and a MIMO processing unit (1) configured to receive the first and the second set of digitized signals (HR1, HR2, LR3-LR6) from the signal providing unit (2) and to process the first and the second set of digitized signals (HR1, HR2, LR3-LR6) to compensate or pre-compensate crosstalk.