305results about How to "Eliminate crosstalk" patented technology

An apparatus and method for eliminating cross-talk being heard at a listener device in a mobile communication system. The apparatus eliminates cross-talk occurring in a signal output through at least two speakers in a mobile system, and includes a decoder for decoding an input signal, a controller for providing information about a delay time difference between direct sound and cross-talk sound of the input signal and gain variation information, a cross-talk cancellation unit for receiving the delay time difference information and the gain variation information and eliminating cross-talk from the decoded signal received from the decoder, and an output unit for converting a stereo signal, from which the cross-talk has been eliminated, into an analog signal and outputting the analog signal through the at least two speakers.

A multi-channel communication transceiver configured to communicate over multiple channels, such as multiple twisted pair conductors, and implement MIMO processing is disclosed. The MIMO processing occurs in a separate MIMO co-processor, which may be a DSP type processor executing machine readable code or a dedicated MIMO filter. The MIMO co-processor may be located on a separate integrated circuit and interface with the transceiver via one or more data paths and one or more control data paths. Control data is exchanged to facilitate processing of the data in the MIMO filter. A slicer output or an error term, may be forwarded to the MIMO co-processor or generated within the co-processor.

The invention discloses a detection device for a laser rangefinder, composed of a sampler, an absorber, a multi-target simulator, a standard target and a variable diaphragm. The laser rangefinder emits a laser directed at the detection device; the sampler and the multi-target simulator simulate a laser target echo, and obtain an receiving optical axis and the minimum detectable power of the laser rangefinder via the maximum distance ranging result; a laser emitting optical axis and a collimation optical axis are corrected via a laser spot position and an axis distance; and the emission and the receiving of the laser rangefinder are quantitatively associated, in order to realize a ranging capacity evaluation of the laser rangefinder. The device disclosed by the invention has no need to be supplied with power, and is simple in operation and low in cost.

The embodiment of the invention provides a crosstalk compensation method of a display panel and a display device of the crosstalk compensation method. The crosstalk compensation method includes the following steps that firstly, a gray scale compensation range is set, wherein the gray scale compensation range includes gray scales ranging between the lowest gray scale and the highest gray scale; secondly, a lookup table is established to record a plurality of compensation values which correspond to the gray scales in the gray scale compensation range respectively; thirdly, whether the gray scale of first-color sub-pixels on the display panel is within the gray scale compensation range or not is judged, if yes, a corresponding compensation value is selected from the lookup table to adjust the initial gray scale of second-color sub-pixels to a corrected gray scale, and otherwise the initial gray scale of the second-color sub-pixels is maintained, wherein the first-color sub-pixels are adjacent to the second-color sub-pixels.

A system, method and program product for designing integrated circuits. A design of an integrated circuit (IC) is analyzed to identify the longest path for each cell pair. The total path delay of each identified longest path is calculated. Net delays are calculated for each cell pair. A crosstalk overhead delay is calculated for each identified longest path using a stochastic model. The crosstalk overhead of each longest path is added to the calculated path delays. The circuit is redesigned to eliminate any path wherein the delay exceeds a maximum accepted delay. The stochastic model may be a tree-like structure derived from several completed integrated circuit designs, in particular from cell placement and wiring for each completed IC. The tree-like stochastic model corresponds crosstalk delays to technology wiring factors.

The invention relates to a magnetic recording/reproducing device in which a reproduce head is positioned where the crosstalk between adjacent tracks in a magnetic disk is minimized to maintain an adequate transfer rate in a system involving great crosstalk. The removal of crosstalk ensures the reproduction of the recorded data and thus increases the reliability of the magnetic recording/reproducing device. The magnetic recording/reproducing device according to this invention includes a magnetic disk on which a plurality of tracks are concentrically formed, and data are recorded at different frequencies on adjacent tracks.

An electrical connector plug for electrical connection to an electrical connector socket. The electrical connector plug includes: an insulation body extending in a longitudinal direction and including a base portion a mounting portion fixed to the base portion; two rows of resilient conductive terminals mounted in the insulation body and arranged symmetrically in pivotal rotation with respect to the longitudinal direction, each comprising a horizontal segment fixed on the base portion and a bended protrusion contact segment extending from the horizontal segment; an electrical conductive plate mounted on the mounting portion including a front segment and an impedance drop segment, extending from the front segment toward the base portion; and a shielding case mounted on the base portion and electrically connected to the metal housing.

The invention relates to the technical field of display and provides an array substrate, a display panel, a display device and a manufacturing method of the array substrate. The array substrate comprises grid lines and data lines insulated from one another on a lining substrate intersecting with each other to limit a plurality of sub pixel units. A thin film transistor and a pixel electrode are formed in each sub pixel unit. Each data line comprises a first data line body and a second data line body arranged between two columns of the corresponding adjacent sub pixel units side by side. In every two columns of the adjacent sub pixel units, the sub pixel units on the odd number line are connected with the corresponding first data line bodies, the sub pixel units on the even number line are connected with the corresponding second data line bodies, and at least part of first data line bodies and the adjacent second data line bodies are arranged on different layers between every two adjacent sub pixel units. According to the array substrate, the display panel, the display device and the manufacturing method of the array substrate, at least part of the first data lines and the adjacent corresponding second data lines are arranged on the different layers, and the short circuit between double data lines is solved.

The invention provides a block balancing method for an orthogonal frequency division multiplexing (OFDM) system on the condition of a fast time variant channel. The method comprises the following: at a sending terminal, a bit signal subjected to cyclic redundancy codification is subjected to channel codification, interlacement, symbol map, serial/parallel conversion and IFFT conversion to be converted to a time domain signal; the time domain signal which is subjected to serial/parallel conversion and is inserted with a cyclic prefix is sent to a radio channel; at a receiving terminal, the signal is received by a traditional first-order frequency domain equalizer, and the signal guess value is checked after the signal is subject to serial/parallel conversion, demap, deinterlacement and signal path decoding; if the check is correct, the signal is outputted; if the check is not correct, the block balancing process is performed, during which, firstly, a time domain OFDM sending signal is restructured; secondly, the received time domain OFDM symbol is divided into a plurality of equilong signal receiving subblocks, the loop restructuring and the interference removing processes are performed by a time domain OFDM restructured signal; and finally, each subblock is subjected to frequency domain balance, the balanced guess values of sub blocks are merged to obtain the block balance output serving as the input of the serial/parallel conversion.

The invention discloses an in-band full duplex underwater acoustic communication apparatus capable of suppressing interference from a digital domain and an analog domain. The full duplex underwater acoustic communication apparatus comprises a transmitting unit and a receiving unit, wherein the transmitting unit comprises a modulator, a digital-to-analog converter, a power amplifier and a transmitting transducer, and the receiving unit comprises a receiving hydrophone, a low-noise amplifier, an analog-to-digital converter and a demodulator. A receiving terminal is subjected to interference of near-end local transmitting signals while receiving remote signals and thus cannot acquire correct demodulated signals. According to the invention, a method for eliminating interference in the analog domain is selected to eliminate the interference, and part of self-interference can be eliminated. Furthermore, a method for eliminating interference in the digital domain is adopted, so that self-interference and inter-symbol interference are completely avoided. The underwater acoustic communication apparatus disclosed by the invention eliminates interference from the analog domain and the digital domain, thereby realizing in-band full duplex underwater acoustic communication in a real sense.

The present invention aims to achieve both rapid supply of reagent substances to micro-chambers and inhibition of contamination from adjacent chambers. For achieving the above objects, the shape of a flow channel in a flow cell including a plate having micro-chambers is varied between the time of substance supply and the time of luminescence reaction.

The invention discloses an asynchronous wireless sensor network MAC protocol started at a sending terminal. The asynchronous wireless sensor network MAC protocol adopts a leading short frame technique, and comprises the following steps: when a sensor node in the network sends data, a channel clearing access mechanism is adopted to confirm whether a channel is idle or not; a certain amount of leading short frames (UF frames) are sent after the channel is confirmed to have no communication task; the channel is monitored periodically by each neighbor node which is in a working condition; after a first UF frame serving as an own goal node is detected, a confirming frame is sent to the sending terminal, and the goal node accesses a receiving condition and waits for receiving data; the sending terminal adopts an 'interval leading' mechanism to wait for the confirming frame at a sending interval of every two UF frames, stops sending UF frames as soon as the confirming frame is received, and accesses a data sending condition. According to the invention, characteristics of the wireless sensor network are fully matched; network energy consumption, network collision, and network delay can be effectively reduced.

The invention relates to a compact wide power input dual polarized rectification antenna. The antenna comprises a reception antenna and a rectification circuit, wherein an output end of the reception antenna is electrically connected with an input end of the rectification circuit, the reception antenna comprises an antenna radiation fin, a common ground level, a first feed probe and a second feed probe, the antenna radiation fin is arranged above the common ground level, a medium space taken as an air gap is arranged between the antenna radiation fin and the common ground level, one ends of the first feed probe and the second feed probe penetrate through the common ground level and then are electrically connected with the antenna radiation fin, no electrical connection is between the first feed probe and the second feed probe and the common ground level, the rectification circuit comprises a first rectification branch, a second rectification branch and a load, input ends of the first rectification branch and the second rectification branch are respectively connected with another ends of the first feed probe and the second feed probe, output ends of the rectification branch and the second rectification branch are respectively connected with two ends of the load, the first rectification branch and the second rectification branch are symmetrically arranged, and differential output is employed.

The invention relates to a liquid crystal display and a public voltage regulating method. The liquid crystal display comprises an LCD panel, a scan driver circuit, a data driver circuit and a control circuit. The LCD panel comprises a plurality of mutually parallel scanning lines, a plurality of mutually parallel data lines which intersect with the scanning lines in an insulated way, a plurality of thin-film transistors which are arranged between the intersection of the scanning lines and the data lines, a plurality of pixel electrodes and a plurality of public electrodes which are opposite to the pixel electrodes. The scan driver circuit is used for providing scanning signals for the scanning lines and the data driver circuit is used for providing grey scale voltage for the data lines; and the control circuit is used for regulating the voltage of the public electrodes according to image signals.

The invention discloses a self-gating resistance-variable memory unit and a preparation method thereof and belongs to the technical field of memories. The self-gating resistance-variable memory unit comprises a stack structure, a vertical trench, an M8XY6 gating layer, a resistance transition layer and upper conductive electrodes, wherein the stack structure contains a plurality of layers of lower conductive electrodes; the vertical trench is formed by etching the stack structure; the M8XY6 gating layer is formed on the inner wall of the vertical trench and at the bottom of the vertical trench; the resistance transition layer is formed on the surface of the M8XY6 gating layer; the upper conductive electrodes are formed on the surface of the resistance transition layer and the vertical trench is filled with the upper conductive electrodes. The self-gating resistance-variable memory unit and the preparation method thereof have the benefits that based on a resistance-variable memory with a self-gating function taken as the memory unit, a self selection function can be realized by means of the features of nonlinear variation of own resistance of the memory unit along with voltage without relying on a gated transistor and a diode; the structure is simple, the integration is easy, the density is high, the cost is low, and the reading crosstalk phenomenon in a cross array structure can be restrained; meanwhile, the self-gating resistance variable memory unit is suitable for a plane stack cross array structure and a vertical cross array structure, and high-density three-dimensional memory can be realized.

The invention discloses an automatic testing system and an automatic testing method for the non-contact transmission characteristics of a millimeter waveband. The method comprises the following steps of: initializing the automatic testing system for the non-contact transmission characteristics of the millimeter waveband; calibrating the automatic testing system for the non-contact transmission characteristics of the millimeter waveband, and finishing a spatial transmission characteristic test under the condition of no element to be tested to obtain test information in a calibration state; finishing a transmission characteristic test under the condition that the element to be tested exists to obtain test information in a test state; obtaining the corresponding power information of a transmitter and a receiver under each frequency value; and subtracting power information obtained in the calibration state from power information obtained in the test state, and displaying a test curve of the transmission characteristics of the element to be tested. By the system and the method, a test in transmission characteristic parameters of 76 to 77GHz can be realized automatically, the problem of absence of millimeter wave testing means and testing equipment is solved, and the shortcomings of high cost, large volume, difficulties in automatic control and the like of testing equipment are overcome.

A system, method and program product for designing integrated circuits. A design of an integrated circuit (IC) is analyzed to identify the longest path between each pair of registers. A crosstalk overhead is calculated for each identified longest path using a stochastic model. The crosstalk overhead of each longest path is added to selected path delays as an incremental port of register set up time. Any path wherein the sum of the path delay and crosstalk overhead exceeds a maximum accepted delay, i.e., where slack is less than or equal to zero is redesigned and the IC is then, placed and wired. The stochastic model may be a tree-like structure derived from several completed integrated circuit (IC) designs, in particular from cell placement and wiring for the completed IC. The tree-like stochastic model corresponds crosstalk delays to technology wire factors.

The embodiment of the invention provides a line initialization method. Data information is not transmitted in data symbol positions in corresponding directions before the acquisition of coefficient matrices (cancellation coefficient matrix and precode coefficient matrix) no matter in the up direction or the down direction. A CO acquires transmission information in all lines in the up direction at first so as to eliminate the crosstalk generated during data transmission in the up direction of all the lines. In this way, it is ensured that no crosstalk exists in the up direction after a return channel of an up error sample is established, so that a crosstalk channel in the down direction can be borne on data symbols transmitted from a CPE to the CO and the CO can calculate and obtain a transmission channel in the down direction of the lines based on crosstalk channel information fed back by the CPE in the down direction. Thus, the down precode coefficient matrix is obtained to eliminate the crosstalk in the down direction. Therefore, services between the CO and the CPE are not affected and influences, caused by joining of a new line, on service data is reduced to the maximum extent.

For optical disk apparatus compatible with multiple standards, employing multiple source beams with different wavelengths, less costly implementations of the photodetecting optics section and associated circuitry are presented. A photodetector plane dedicated to RF signal detection is provided. By bandwidth combining an RF signal detected by this plane is with another signal from other photodetector planes, S/N ratio is improved. For beam splitting, diffraction gratings are used and adjustment precision requirement is relaxed greatly. AC amplifiers can be used as RF photocurrent amplifiers.

An embodiment of the invention discloses a display panel, a production method thereof and a display device, and relates to the technical field of display. Production cost of the display panel can be reduced on the premise of crosstalk elimination. The display panel comprises an array substrate. The array substrate comprises a plurality of film layers sequentially formed on a first substrate. A data line and a drain electrode are positioned on the same film layer. A grid line, a grid electrode and a first common electrode are positioned on the same film layer. The film layer where the grid line, the grid electrode and the first common electrode are positioned is positioned between the film layer where the data line and the drain electrode are positioned and the film layer where a pixel electrode is positioned.

A tire management system includes a sensor module secured to inside of a tire that is mounted on a vehicle, for measuring a tire state value and transmitting the measured data to the vehicle side, and a receiver module secured to the vehicle side for transmitting a signal demanding the measured data to the sensor module at a predetermined cycle and receiving the measured data transmitted from the sensor module. The sensor module measures a tire status value at a predetermined cycle, judges whether the measured data is out of a predetermined normal range, and immediately transmits the measured data and an abnormal state data through a predetermined channel exclusively used for transmitting the abnormal state data to the receiver module, if the data is judged to be out of the normal range. With this structure, if an abnormal state occurs, the receiver module can receive the abnormality without any delay, while preventing shortening of the cell life.

It is a light fiber micro-electron mechanical system pressure sensor and its complex structure. The said sensor end polished fiber end is connected with the boron and silicon underlay and their outer end is connected with the light fixed epoxide resin and there is monocrystalline silicon on the underlay. Its complex structure wide band light source is connected with the tunable filter controller and tunable filter. The output end of the filter is connected with the array wave-guide grating. The output end of the array wave-guide grating is separately connected with photoelectricity detector and sensor through fiber adapter, light single direction isolator and light fiber coupler.