41 results about "Crosstalk interference" patented technology

The invention relates to a multi-channel signal integrity optimization method and system for a passive copper cable, and the method comprises the steps: obtaining channel characteristic parameters and signal transmission requirements of the passive copper cable, and carrying out the impedance matching, and obtaining an optimized transmission channel; acquiring real-time transmission data of the passive copper cable, and performing equalization processing on the real-time transmission data through the optimized transmission channel to obtain a stable transmission signal; acquiring crosstalk interference data acquired by the passive copper cable, and carrying out shielding analysis on the crosstalk interference data and the optimized transmission channel to obtain a crosstalk suppression measure; performing frequency characteristic analysis on the crosstalk interference data to obtain frequency compensation information, and performing transmission prediction on the frequency compensation information based on the crosstalk suppression measure to obtain a frequency compensation parameter; and performing multi-channel optimization on the initial signal optimization result according to the frequency compensation parameter to obtain a multi-channel optimization signal. According to the invention, complex and changeable transmission environments can be coped, and stable transmission of signals is ensured.

The invention discloses a flexible multi-mode hydrogel sensing patch as well as a preparation method and application thereof. The flexible multi-mode hydrogel sensing patch is composed of a bottom hydrogel-based bimodal pressure-temperature sensing layer and a top electrostatic spinning nanofiber-based non-contact detection layer. The hydrogel serves as a core base material and has high toughness and water-retaining property, multi-mode sensing of temperature, pressure and non-contact proximity is achieved through different sensing mechanisms, and crosstalk interference does not exist. In a simulated real scene, the feasibility of the multi-mode sensing function of the robot hand is verified by grabbing an object through the robot hand. A plurality of multi-mode sensing patches integrated at different positions of the pillow are used for intelligent sleep monitoring, and a one-dimensional convolutional neural network is used for acquiring and analyzing various human pillow interaction information and time-dependent evolution thereof, so that tracking of head movement and recognition of wrong postures possibly causing poor sleep are realized; and a promising method is provided for sleep monitoring.

The application discloses a high-speed connector, comprising: an insulating body, containing a first terminal group, a second terminal group, a third terminal group and a fourth terminal group, each terminal group is provided with a base, a groove is formed in the base, the groove contains a metal sheet, the base holds a plurality of ground terminals and a plurality of differential terminals, the third terminal group and the fourth terminal group respectively include a sheet structure with plastic material, which is arranged in the groove of the third terminal group and the fourth terminal group, a gap is formed between a plurality of the differential terminals and the sheet structure, and a plurality of the ground terminals and the sheet structure do not have the gap. Therefore, the high-speed connector adjusts the dielectric coefficient of the structure around the terminal, changes the electromagnetic characteristics and crosstalk interference, and improves the quality of high-frequency signal transmission.

The invention relates to a voice processing method and device, electronic equipment and a vehicle, and belongs to the technical field of voice processing. The method comprises the following steps: acquiring an original voice signal of a target voice area acquired by target voice acquisition equipment; performing echo cancellation on the original voice signal to obtain a first voice signal of the target voice region; performing voice separation on the first voice signal to obtain a second voice signal of the target voice area; and performing noise suppression on the second voice signal to obtain a target voice signal of the target voice region, the noise suppression including echo residual noise suppression and crosstalk noise suppression. Therefore, echo residual noise suppression and crosstalk noise suppression are carried out on the second voice signal at the same time to obtain the target voice signal of the voice region, the method is simple and easy to implement, the calculation complexity is low, the noise suppression efficiency is improved, echo residual and crosstalk interference can be effectively suppressed, the accuracy of voice wake-up and voice recognition can be improved, and the user experience is improved. The method is suitable for an application scene of vehicle-mounted voice processing.

This specification provides methods and systems for crosstalk reduction, such as removing crosstalk interference from a microscope image signal, in order to reconstruct an intended image from an image signal. In one example, the method includes determining a weighted interference signal of a microscope image by determining a weighting constant of the weighted interference signal that provides minimum variance; removing the weighted interference signal from the whole signal; and determining the intended image signal based on the removal of the weighted interference signal from the whole signal.

The invention relates to the technical field of semiconductor probe performance testing, in particular to a probe performance testing method, which comprises the following steps of: calculating resistance consistency and a signal transmission fidelity ratio of a probe interference working condition through a contact simulation test and a signal transmission simulation test, and performing single-probe simulation verification; for double probes formed by qualified single probes, calculating contact pressure interference variables and electromagnetic crosstalk interference variables, and carrying out cooperative interference judgment; extracting historical probe false data, and constructing an interference false risk model and a non-interference false risk model; grouping the double probes according to interference degrees, and substituting the grouped double probes into corresponding models to calculate risk assessment values; determining an adjustment direction and an adjustment scheme for the high-risk group, and calculating the average attenuation rate of the double probes after adjustment; and after the attenuation rate is verified to reach the standard, the probe group is determined as a qualified performance test probe group, so that the accuracy, the stability and the anti-interference capability of semiconductor probe performance detection are effectively improved.

The utility model relates to the technical field of electric connector manufacturing, in particular to a wiring terminal and an FPC (Flexible Printed Circuit) connector comprising the same. The wiring terminal only retains a signal transmission function, and is composed of an embedding segment, a vertical thrust segment, an elastic top contact conduction segment and a PCB welding segment. And the embedding section and the elastic top contact conduction section are formed by extending the rear side wall of the vertical thrust section backwards. And the PCB welding section is formed by forwards extending the front side wall of the vertical thrust section. Therefore, on one hand, a charge distribution surface is greatly reduced, and the stability and reliability of signal transmission are ensured; in addition, at least one of the wiring terminals is grounded, so that the problems of electromagnetic waves, crosstalk interference and the like which are generated in the signal transmission process are weakened to a certain extent; and on the other hand, when the flexible flat cable is inserted in place relative to the FPC connector, the plurality of wiring terminals are electrically conducted with the flexible flat cable in an elastic pressing contact manner, so that the flexible flat cable is prevented from being quickly worn in long-term application.

The present application provides an electrical connector, a manufacturing method thereof, and an upper layer oblique insertion assembly and an assembly method thereof. The electrical connector and the upper layer oblique insertion assembly can shield the conductive terminals by a bridging shield to reduce signal transmission interference of the conductive terminals and achieve electrical connection between the conductive terminals on the electrical connector, thereby suppressing the generation of coupled crosstalk interference when transmitting high-speed signals. Therefore, the electrical connector and the upper layer oblique insertion assembly of the present application can meet the customized requirements of the electrical connector for transmitting high-speed signals. In addition, the components of the electrical connector of the present application are assembled by oblique insertion, which can reduce the height of the electrical connector and thus reduce the internal space occupied by the electrical connector in the electronic device, so that the electronic device can continue to develop in the direction of lightness, thinness and smallness.

This section provides methods and systems for reducing crosstalk, for example, for removing crosstalk interference from a microscope image signal in order to reconstruct an intended image from the image signal. In one example, a method involves determining a weighted interference signal of a microscope image by determining a weighting constant for the weighted interference signal that yields minimal variance, removing the weighted interference signal from the overall signal, and determining the intended image signal based on the removal of the weighted interference signal from the overall signal.

An electronic system having a mounting substrate with a plurality of layers. The mounting substrate combines an upper shield structure and a lower shield structure to form an interlocking shielding structure to reduces crosstalk interference and improve return loss and insertion loss for high-speed serial communication circuits. The upper shield structure and the lower shield structure have a series of grounded reference shields that reduce unwanted electrical signal interferences.

The invention provides a distributed optical fiber vibration sensing array based on sensitized vibration sensing units, a measurement system and a use method. The sensing array is formed by repeatedly connecting an optical fiber sensitization vibration sensing unit, a vibration insensitive unit and a weak reflection unit according to a specific sequence, the optical fiber sensitization vibration sensing unit improves vibration sensitivity and coupling efficiency through sensitization packaging, and effective capture of weak vibration signals is guaranteed; the vibration insensitive unit realizes vibration isolation between adjacent sensing units and between a non-sensing section and a sensing section; and the weak reflection unit is used for marking the position of the sensing unit and providing a reference for accurate positioning. After the array is connected to a DAS demodulator, the position of the sensing unit is determined through a high-signal-to-noise-ratio reflection signal of the weak reflection unit, and a target position signal is extracted to complete acceleration parameter measurement. According to the invention, crosstalk interference is effectively suppressed, and the accuracy of vibration positioning and acceleration measurement in long-distance monitoring is improved.

The present application provides an electrical connector, comprising: an insulating body; a conductive body; and a plurality of ground terminals and a plurality of signal terminals. A plurality of L-shaped protrusions are provided on the conductive body, and a row of L-shaped protrusions is formed between every two adjacent terminal rows. The L-shaped protrusion has a short side portion and a long side portion. The first end of the short side portion is connected to the first end of the long side portion. The short side portion extends along the column direction and is electrically connected to the corresponding ground terminal by the second end of the short side portion, and the long side portion extends along the row direction to isolate at least a part of the differential signal terminal pairs that overlap each other in the adjacent terminal rows in the column direction. Such an electrical connector can achieve good shielding of the differential signal terminal pairs to avoid crosstalk interference, and common grounding is achieved between the ground terminals, effectively improving the overall operation efficiency of the electrical connector.

The utility model provides an electric connector, which comprises an insulating seat body and two conductive terminal groups assembled in the insulating seat body, a plurality of signal terminals in the conductive terminal groups are all provided with bases made of insulating materials, and a plurality of grounding terminals are directly punched and formed by a connecting sheet. The butt joint parts of the plurality of grounding terminals are in a reverse folding mode, so that the suspended tail ends are in a relative bending state towards the direction of the butt joint space, the butt joint parts of the plurality of signal terminals are in a relative inclined extending state, and a wrapping rubber base is arranged at the position of the connecting piece. Therefore, the plurality of signal terminals and the plurality of grounding terminals are arranged in a non-coplanar shape, and noise of adjacent signal terminal pairs can be shielded and crosstalk interference between the signal terminals in the same row can be improved through the integral structure design.

The invention relates to a connector capable of improving crosstalk interference, which comprises a fixing assembly, a first grounding terminal group, a second grounding terminal group, a first grounding piece and a second grounding piece, and is characterized in that the first grounding terminal group is connected to the first grounding piece and forms an independent electric conduction loop, and the second grounding terminal group is connected to the second grounding piece and forms an independent electric conduction loop; the first grounding terminal group is connected with the first grounding piece to form an independent electrical conduction loop, the second grounding terminal group is connected with the second grounding piece to form another independent electrical conduction loop, the first grounding terminal group and the second grounding terminal group are fixed on the fixing assembly, and a preset interval is kept between the first grounding piece and the second grounding piece, so that the overall impedance is reduced; the crosstalk interference during signal transmission is effectively reduced, and the signal quality during high-frequency signal transmission is improved.

Methods and system are provided herein for crosstalk mitigation, such as the removal of crosstalk interference from a microscopy image signal to recover an intended image from the image signal. In one example, a method includes accumulating a plurality of weighting constant values and variance data to determine a weighting constant of a weighted interference signal of a microscopy image, wherein determining the weighting constant comprises fitting the plurality of weighting constant values and variance data to a quadratic curve; determining the weighted interference signal of the microscopy image based on the weight constant; removing the weighted interference signal from an overall image signal of the microscopy image; and determining a recovered image signal based on removal of the weighted interference signal from the overall image signal.

The utility model provides an electric connector, which comprises an insulating seat body, a conductive terminal group and an impedance matching element, the conductive terminal group accommodated in the insulating seat body comprises two groups of a plurality of signal terminals and a plurality of grounding terminals which are correspondingly arranged, each two adjacent signal terminals is provided with a base for in-mold injection, and the impedance matching element is arranged on the base. The grounding terminals are provided with bridging parts covering the base at intervals, the impedance matching element is arranged between the two adjacent conductive terminal groups and comprises conductive plastic and a plurality of grounding sheets arranged on the two surfaces of the conductive plastic, and the grounding terminals and the grounding sheets are electrically contacted to form common grounding. Therefore, noise of adjacent signal terminal pairs is shielded, crosstalk interference between signal pairs in the same row is improved, and high-frequency performance is further optimized.

The utility model relates to the field of electronic devices, in particular to an electric connector, which comprises a shielding shell, an insertion port, an insulating colloid group and a transmission conductor group, the transmission conductor group comprises a first transmission conductor group welding part, two first high-frequency differential transmission conductor pair welding parts, at least one first grounding transmission conductor welding part, a second transmission conductor group welding part and two second high-frequency differential transmission conductor pair welding parts; when a counter electric connector is placed into the shielding shell from the insertion opening and is conducted with the transmission conductor group on the insulating colloid group, the welding part of the first grounding transmission conductor can isolate noise generated by the first high-frequency differential transmission conductor to the welding part, and the advantages of solving the problem of high-frequency crosstalk interference and stabilizing the high-frequency transmission speed are achieved.

The present invention discloses a method and a device for measuring the brightness of display screen pixel points to eliminate crosstalk interference, belonging to the field of display screens. By means of different interval lighting modes, the number of intervals for pixel display is increased spatially, the brightness of pixel points under different interval lighting conditions is collected, and through comparison, the crosstalk change trend between pixel points with different intervals is obtained, so as to deduce the optimal acquisition interval. When the interval distance is less than the optimal interval, the crosstalk interference of pixel points cannot be ignored. When the interval distance is greater than the optimal interval, in order to traverse each pixel to be collected, the number of acquisition times needs to be increased exponentially, and the acquisition efficiency drops exponentially. The present invention avoids various stray light crosstalk interferences and improves the accuracy of the collected data; adopts the optimal interval scheme to efficiently measure the brightness data of LED display screen pixel points. For COB display screens with block differences, the brightness data can also be accurately collected, improving the correction uniformity of the display screen.

The invention relates to the technical field of wireless communication, in particular to a multi-port signal processing method for a distributed small base station and a related device. The method comprises the following steps: receiving 4GA / B and 5GA / B radio frequency signals of two-way MIMO through an SMA interface, separating a transmitting signal TX and a receiving signal RX by using an FDD duplexer aiming at an FDD signal, and separating the TX and RX signals by using a TDD radio frequency switch aiming at a TDD signal for receiving and transmitting link isolation of signals of different systems. Through a multi-port signal processing architecture, the problems of architecture complexity and cost of a traditional distributed small base station system are effectively solved. Aiming at the signal characteristics of 4G FDD and 5G TDD systems, differentiated transceiving isolation is realized by adopting an FDD duplexer and a TDD radio frequency switch, the link isolation of signals of different systems in a transmitting time slot and a receiving time slot is ensured, crosstalk interference is avoided from a physical layer, and the signal purity is improved.

This section provides methods and systems for suppressing crosstalk, for example, for removing crosstalk interference from a microscope image signal to reconstruct an intended image from the image signal. In one example, a method involves accumulating a multitude of weighting constant values ​​and variance data to determine a weighting constant for a weighted interference signal of a microscope image. Determining the weighting constant includes fitting the multitude of weighting constant values ​​and variance data to a quadratic curve; determining the weighted interference signal of the microscope image based on the weighting constant; removing the weighted interference signal from a composite image signal of the microscope image; and determining a reconstructed image signal based on the removal of the weighted interference signal from the composite image signal.

The utility model relates to the technical field of manufacturing of electric connectors, in particular to a plastic-metal composite turnover pressing piece and an FPC (Flexible Printed Circuit) connector comprising the plastic-metal composite turnover pressing piece. The metal shell is made of a low-resistance and high-strength material and is grounded. The plastic and metal composite overturning pressing piece is formed by combining a plastic overturning pressing plate and a metal shell. For the plastic turnover pressing plate, the rear side wall of the pressing plate body extends forwards to form an avoiding notch. And the chamfered edge which is elastically pressed by the mechanical terminal and is limited is formed in the avoiding gap under the action of the pressing shaft. The left rotating pivot and the right rotating pivot are formed on the left side wall and the right side wall of the pressing plate body. Therefore, on one hand, the problems of electromagnetic waves, crosstalk interference and the like which are generated in a signal transmission process are weakened; and on the other hand, the stability and the reliability of the locked state of the plastic metal composite overturning pressing piece are ensured, and the design concept of the large-size plastic metal composite overturning pressing piece becomes reality.

A charging system is disclosed. The charging system includes multiple charging circuits to simultaneously charge chargeable devices in proximity of the charging system. The charging circuits establish wireless communications associated with charging of the chargeable devices. Due to simultaneous wireless communications, a cross-talk interference leads to an error in at least one of the wireless communications. Upon detecting the error, the corresponding charging circuit generates a delay value. After a time delay that is based on the delay value, the charging circuit reestablishes the wireless communication with the chargeable device thereby mitigating the crosstalk interference. The charging circuit charges the chargeable device upon successful reestablishment of the wireless communication.

The present invention relates to an intelligent painting method and system based on optical processing. The intelligent painting method described in the present invention includes: real-time collecting holographic light field data, user interaction signals, and environmental parameters through a multi-dimensional sensor; performing time-frequency alignment and noise filtering on multi-source heterogeneous data to generate holographic image data representing multi-view projection deformation gradients and user intentions; adaptively compensating for projection geometric errors based on a neural radiance field model and a dynamic deformation field function, generating phase correction parameters and optimizing the energy distribution of holographic layers to suppress inter-layer crosstalk interference; combining a photon-electron clock synchronization mechanism and a predictive rendering algorithm to achieve ultra-low latency interactive projection in virtual and real spaces. This method deeply integrates optical processing and intelligent algorithms, solves the problems of multi-view deformation accumulation, holographic layer crosstalk, and excessive interaction latency, and significantly improves the positioning accuracy, projection clarity, and real-time response performance of 3D painting in complex scenarios.

The application discloses an electric connector, which comprises an insulating body and a plurality of transmission modules. Each transmission module comprises a terminal assembly and a cable assembly. Each terminal assembly comprises two terminals and a shielding shell. Each terminal has a contact portion, a wiring portion and an intermediate portion. The first shielding portion of the shielding shell is arranged outside the wiring portions of the two terminals, and the first shielding portion is provided with an open area exposing the two wiring portions. A conducting tab is electrically connected with the shielding shells of the terminal assemblies in the same row. The conducting tab shields the open areas of the shielding shells in the same row. Each first shielding portion and the conducting tab jointly form a shielding space and are arranged outside the corresponding two wiring portions. The application can provide good shielding for the wiring portions of the terminals and reduce the crosstalk interference on the terminals. Meanwhile, the conducting tab connects the shielding shells in the same row into a whole grounding structure, thereby improving the signal crosstalk.

The invention discloses a data cable insulated core wire with a special structure and a preparation method thereof, and relates to the technical field of signal transmission, in particular to the prepared data cable insulated core wire with the special structure, the prepared data cable insulated core wire comprises four inner conductors and an insulator, the inner conductors are wrapped by the insulator, and the four inner conductors are arranged in a star shape; in the four inner conductors, the distances between every two non-adjacent inner conductors are the same; and the insulator adopts a micropore structure with uniform and consistent pores. According to the invention, the insulated core wire is prepared by adopting a synchronous integrated extrusion molding technology of the four inner conductors, so that the length of each inner conductor in the insulated core wire is kept consistent, the spacing of the inner conductors is kept stable, a twisting or arranging process after a plurality of conductors are independently insulated in a traditional structure is omitted, the core wire filling coefficient is improved, the outer diameter of a finished product of the data cable is reduced, and the production cost is reduced. And signal delay distortion caused by path difference is effectively suppressed, crosstalk interference and signal transmission attenuation between line pairs are greatly reduced, and the signal transmission quality is improved.

A connector assembly and board-end connector thereof, wherein the board-end connector comprises multiple terminal modules, each of which comprises a signal terminal and a metal shielding cover. The metal shielding cover provides a shielding environment for the signal terminal to reduce the level of crosstalk interference when the signal terminal transmits high-speed signals.

The invention discloses a distributed multi-channel active noise control system and method based on a time domain neural network. The distributed multi-channel active noise control system comprises a reference microphone, a loudspeaker, an error microphone and a controller. The reference microphone is close to a noise source, the loudspeakers are located in a noise reduction area, and each loudspeaker is provided with an error microphone and a channel controller. The controller is formed by connecting a self-adaptive controller and a neural network controller in series. The reference microphone and the error microphone are connected with the input end of the adaptive controller, and the loudspeaker is connected with the output end of the neural network controller. The self-adaptive controller adopts a distributed control strategy and estimates primary channel impulse response in real time through a self-adaptive algorithm, and the neural network controller models a secondary channel inverse model offline through a secondary channel measurement and controllable neural network training method. The system and the method can effectively reduce modeling errors and crosstalk interference, track noise source position changes in real time, and improve noise reduction performance in a complex acoustic environment.

The invention relates to the technical field of wire harness testing, in particular to a high-speed wire harness comprehensive testing method and system based on environmental perception, and the method comprises the steps: carrying out the electromagnetic vibration threshold value determination operation based on a high-speed wire harness to be tested and an environmental perception module, obtaining an optimal test sampling frequency and an optimal electromagnetic interference intensity threshold value, setting a test host, and carrying out the testing of a high-speed wire harness. Performing signal attenuation test on the high-speed wire harness to be tested to obtain signal test intensity, monitoring the vibration amplitude and the vibration frequency of the high-speed wire harness to be tested in real time, calculating a real attenuation value, performing crosstalk monitoring on the high-speed wire harness to be tested to obtain a real crosstalk interference value set, and performing crosstalk interference on the high-speed wire harness to be tested; and performing joint stability test on the high-speed wire harness to be tested to obtain disconnection times, and completing high-speed wire harness comprehensive test based on environmental perception based on the unqualified high-speed wire harness or the qualified high-speed wire harness. According to the invention, the test efficiency and detection precision of the high-speed wire harness can be improved.

The invention provides a flat data cable and a preparation method thereof, and the flat data cable comprises a plurality of insulating single wires and a plurality of paired wire groups which are formed by twisting two insulating single wires at different pitches; the sheath is arranged on the outer side of the paired wire group; the framework and the sheath are integrally formed, and the framework is formed by a hollow structure formed in the sheath and is used for isolating the paired wire group and supporting the sheath; according to the flat data cable structure, the supporting performance is enhanced, crosstalk interference between wire pairs is effectively suppressed, the pressure resistance is improved, the signal transmission quality of the flat data cable is ensured, and the maintenance and replacement cost is reduced.

A terminal module comprises a differential signal terminal pair, two grounding terminals and an insulating frame. Each grounding terminal is provided with a plate surface; the insulating frame partially wraps the differential signal terminal pair and the two grounding terminals in an integrated mode. The insulating frame is provided with a surface corresponding to the two plate surfaces of the two grounding terminals, and the surface is provided with two concave sections. At least one part of the position of each sunken section corresponds to the plate surface of the corresponding grounding terminal, each sunken section is of a long structure, and the length direction of each sunken section extends in the length direction of the corresponding grounding terminal. Therefore, the two signal terminals can keep good signal integrity performance during signal transmission, and crosstalk interference between two adjacent differential signal terminal pairs can be reduced.