168 results about "Signal transmission delay" patented technology

The present invention provides a semiconductor device that is inexpensive and can suppress signal transmission delay, and a manufacturing method thereof. The semiconductor device includes: a plurality of semiconductor chips; a semiconductor substrate that has, on the same surface thereof, a chip-to-chip interconnection for electrically connecting the plurality of semiconductor chips to each other, and a plurality of chip-connection pads connected to the chip-to-chip interconnection; and a wiring board that has a plurality of lands of which pitch is larger than a pitch of the chip-connection pads, wherein a major surface of each of the plurality of semiconductor chips is connected to the chip-connection pads via a first connector so that the plurality of semiconductor chips are mounted on the semiconductor substrate, and an external-connection pad is formed on the major surface other than a region facing the semiconductor substrate, and is connected to the land on the wiring board via a second connector.

A liquid crystal apparatus for preventing deterioration of image quality owing to delay of the signal transporting speed at the time of switching, due to parasitic capacity and parasitic resistance in the pre-charging signal supply path and horizontal scanning signal supply path. The time interval (T4) from the point of the end of the pre-charging period T12 within the m'th horizontal scanning period to the point of the start of the leading sampling period in the m'th horizontal scanning period has been set so as to be longer than the signal transporting delay time at the pre-charging switch (172) connected to the data signal line S1. Accordingly, the time interval (T1) from the end of the pre-charging period (T2) to the point at which the shift data signal (DX) of the X-driver (104) becomes active has been set so as to be longer than the signal transporting delay time at the pre-charging switch (172) connected to the data signal line S1. Further, the time interval (T3) from the point of the end of the (m-1)th horizontal scanning period to the point of the start of the pre-charging period (T2) set within the m'th horizontal scanning period has been set so as to be longer than the signal transporting delay of the horizontal scanning signal h(m-1) reaching the pixel A(m-1, x) positioned farthest away from the Y-driver (102).

The invention discloses an array substrate of a fringe-field-switching-type crystal display device. The array substrate comprises a plurality of data lines, a plurality of grid lines, pixel electrodes, first public electrodes and second public electrodes, wherein the grid lines and the data lines are arranged in a crossed mode to define pixel regions, the pixel electrodes are arranged in the pixel regions, the first public electrodes are formed between the data lines and the pixel electrodes, the positions, corresponding to the data lines, of the first public electrodes are hollowed out, the second public electrodes and the pixel electrodes are located on the same layer and the second public electrodes are overlapped with the data lines. According to the array substrate, stray capacitance between the first public electrodes and the data lines is reduced, signal transmission delay is shortened, and power consumption is lowered. Meanwhile, due to the arrangement of the second public electrodes, interference brought to the pixel electrodes by the data lines is shielded, stray capacitance of the pixel electrodes between the adjacent pixel regions is also reduced, interference of the pixel electrodes between the adjacent pixel regions is effectively absorbed, and the quality of displayed frames is improved.

A method and apparatus for transmitting and receiving a coded signal having an upper layer signal and a lower layer signal is disclosed. The method comprises the steps of combining the upper layer signal and the lower layer signal, encoding the combined upper layer signal and lower layer signal, delaying the upper layer signal, modulating the delayed upper layer signal, modulating the lower layer signal, transmitting the delayed upper layer signal and transmitting the lower layer signal. The apparatus comprises an encoder, for encoding a combined upper layer signal and lower layer signal, a delay, communicatively coupled to the encoder, for delaying the upper layer signal, a first modulator, for modulating the delayed upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter, communicatively coupled to the second modulator.

The invention relates to a robot teleoperation system control technology, and discloses a non-linear teleoperation system position and force tracking and controlling system with time-varying delay aiming to solve the problem of position errors and force errors, caused by transmission delay of position signals and force signals of a driving robot and driven robot, between the driving robot and the driven robot, wherein the transmission delay is generated by time-varying delay of a non-linear teleoperation system. By means of the non-linear teleoperation system position and force tracking and controlling system, system tracking performance is improved, and system stability is guaranteed. According to the technical scheme, the non-linear teleoperation system position and force tracking and controlling system with time-varying delay comprises an operator module, a driving robot controller, the driving robot, a communication channel, a driven robot controller, a driven robot and an environment module. By means of the non-linear teleoperation system position and force tracking and controlling system, the problem of transmission delay, generated through time-varying delay of the non-linear teleoperation system, of the position signals and force signals of the driving robot and driven robot can be effectively solved, and system position and force tracking accuracy is improved.

A system and method of synchronizing transmissions in a simulcast system by continuously adjusting the signal transmission delay. Timing information that includes a GPS timestamp is continuously generated at a source site, encoded into a timing packet which along with a content signal can be transported over a network link such as T1 / E1 or a packet switched network to multiple transmitter sites. Once received at a transmitter site, the timing packet along with the content signal is delayed by an adjustable delay. The GPS timestamp in the received timing packet is compared to a GPS timestamp that is generated at the transmitter site upon arrival of the timing packet. Based on a variance between that comparison and the value of a user-specified target delay, the delay of the received signal is adjusted to synchronize signal transmissions in the simulcast system.

A high-precision input device which has less delay in signal transmission and can sense a plurality of input signals is provided. This input device includes a planar first input area and a second input area annularly formed around the periphery of the first input area. The input device outputs different signals when beating inputs are applied to the input areas. The surface of the first input area is almost entirely covered by a sheet-like first input sensor that is divided into left-side and right-side sensors. A plurality of second input sensors are arranged annularly in the second input area and they are connected to a conductive section. The conductive section is connected to a plurality of bypass members provided for the second input sensors so that the input device is provided with a plurality of paths for transmitting signals from each of the second input sensors.

A printed circuit board (PCB) is provided that maximizes compensation capacitance per unit area of the PCB while minimizing signal transmission delays in the PCB. The PCB includes a first section having a first dielectric constant (DK), a second section having a second DK lower than the first DK and provided above or below the first section, a plurality of crosstalk compensation elements provided in the first section, and a plurality of circuit elements provided in the second section.

The invention belongs to the field of geophysical exploration and provides a signal transmission delay measurement model and a method. The magnitude of synchronous errors needing to be corrected can be accurately measured by adopting the model and the method. The invention provides an accurate measurement and correction method and device of synchronous acquisition time errors of multiple codes. The device is applied to a towline acquisition system. The system mainly comprises a control and processing center, a data preprocessing module and acquisition nodes, wherein the control and processingcenter generates a main clock. The device comprises a delay measurement module (DMM) and a delay correction module (DCM)_i, wherein i is equal to 1,2,...,n and means the i acquisition node; the DMM is arranged in the data preprocessing module; and the DCM_i is arranged in the corresponding i acquisition node. The method and the device are mainly applied to geophysical exploration.

The present invention provides a semiconductor device that is inexpensive and can suppress signal transmission delay, and a manufacturing method thereof. The semiconductor device includes: a plurality of semiconductor chips; a semiconductor substrate that has, on the same surface thereof, a chip-to-chip interconnection for electrically connecting the plurality of semiconductor chips to each other, and a plurality of chip-connection pads connected to the chip-to-chip interconnection; and a wiring board that has a plurality of lands of which pitch is larger than a pitch of the chip-connection pads, wherein a major surface of each of the plurality of semiconductor chips is connected to the chip-connection pads via a first connector so that the plurality of semiconductor chips are mounted on the semiconductor substrate, and an external-connection pad is formed on the major surface other than a region facing the semiconductor substrate, and is connected to the land on the wiring board via a second connector.

The invention provides a shooting synchronization method used for performing synchronous shooting operations on a plurality of cameras by any camera in a multi-camera system. The shooting synchronization method comprises the steps of acquiring all cameras of current synchronous networks in a network broadcasting manner; acquiring signal transmission delays between the cameras; generating a synchronous shooting command for each camera according to the signal transmission delay of each camera; and sending the synchronous shooting commands to the corresponding cameras via a wireless network, thus achieving the frame synchronous shooting of all cameras in the multi-camera system. The invention also provides a shooting synchronization device. The shooting synchronization method and the shooting synchronization device provided by the invention are simple to install and convenient to operate, and the corresponding multi-camera system is low in production cost.

This invention discloses a method for measuring propagation delay of radio communication system, among which, the devolved system is composed of a base station and a terminal. This invention includes the following steps: calculating or fitting to get the radio transmission loss mode of a base station which sends the transmission loss mode by broad cast to the regions covered by it, the terminal gets, the transmission loss mode of the base station by demodulation and measures the received power to compute its distance to the base station and air signal transmission delay according to the received power and the transmission loss model of the base station. This invention increase the accuracy of computing transmission delay time by the terminal so as to increase the cover radius of the base station by emitting before hands locate terminals accurately.

The invention relates to a liquid crystal display (LCD) panel structure, which includes a plurality of scan lines, a plurality of data lines intersected with the scan lines to define a plurality of pixel areas a plurality of pixels, and pixel arrays formed in the pixel areas and arranged in the shape of a matrix to form a pixel array, wherein a virtual data line is arranged near the outmost data line of the pixel areas, thereby ensuring that the signal transmission delay time constants of the outmost data line of the pixel areas and the data lines inside the pixel matrix are basically the same, so as to avoid the discrepancy phenomenon of the brightness on the two sides of the panel in the prior art, and improve the displaying effect of the LCD panel.

An active matrix-type liquid crystal panel is driven for a motion picture display in a succession of frame periods to provide an improved motion picture quality without causing a lowering in luminance or contrast, or a display irregularity over the panel due to a signal transmission delay along the panel electrodes. In the driving method, each frame period is divided into a plurality of sub-frame periods including at least one preceding sub-frame period and a final sub-frame period so that said at least one preceding sub-frame period provides a total period which is shorter than the final sub-frame period; the active elements along the rows of pixels are sequentially selected row by row at respective selection periods in each sub-frame period; and the liquid crystal at each pixel is supplied with a voltage in a selection period of each preceding sub-frame period which is lower than a voltage applied to the liquid crystal at the pixel in the final sub-final period.

The invention relates to a control system of a liquid crystal display, which is used in the liquid crystal display, and comprises a timing controller, a level shifter and an array substrate column driver, wherein the timing controller is connected with the liquid crystal display and is used for outputting first clock signals and pulse signals, receiving feedback signals of pixels, and judging whether second clock signals are output or not according to the feedback signals, and the level shifter is connected with the timing controller and providing the liquid crystal display with charging signals according to the first clock signals and the second clock signals respectively; and the array substrate column driver is connected with the liquid crystal display and the level shifter, and is used for transmitting driving signals according to the charging signals respectively to control the charging of the pixels of the liquid crystal display. The invention also provides a control method of the liquid crystal display, which can solve the problems of charging error of the pixels caused by signal transmission delay in the liquid crystal display.

The invention relates to the field of electric connectors, in particular to a high-speed electronic connector which comprises a plurality of terminals for realizing electrical connection, an insulating housing in which the plurality of the terminals are embedded and a grounding piece for realizing grounding shielding, wherein a solid part for leading the terminals to pass through and a transom window are arranged on the insulating housing, the grounding piece is independent of the insulating housing, the grounding piece is arranged on one side of the insulating housing, an opening is formed on the grounding piece, and the opening corresponds to the solid part of the insulating housing. The high-speed electronic connector can maintain the impedance of the terminals under the continuous andstable state during the applications, effectively reduce the crosstalk between the signal terminals and the signal transmission delay, and be further conductive to transmission of electronic signals.

The invention relates to a multi-chip 3D stacked packaging structure. The structure comprises a main chip and at least one auxiliary chip. The main chip and the auxiliary chip are respectively provided with a circuit surface and a back surface facing the circuit surface; the auxiliary chip is stacked on the main chip; a main bonding pad is arranged on the circuit surface of the main chip, and an auxiliary bonding pad is arranged on the circuit surface of the auxiliary chip; the auxiliary bonding pad is connected with the main bonding pad by a metal wire. By using the multi-chip 3D stacked packaging structure, the main chip for video processing is designed to connect a plurality of auxiliary chips completely by internal leads in a package, and the functional integration of three chips in a dual in-line package is finished. High formation degree of the chip reduces the area of a circuit board, lowers the production cost of manufacturers, reduces the signal transmission delay and improves the system performance simultaneously. And the system board and the module have the advantages of small packaging size and light weight.

A digital control switching power supply unit includes an A / D converter circuit having a delay line circuit that has a delay element array whose delay time is controlled by a bias current, and that converts a current value into a digital signal using a signal transmission delay time, a phase difference detector circuit that detects a phase difference between a switching cycle and an A / D conversion cycle, a charge pump circuit that generates a control voltage in accordance with the phase difference, and a bias current indicator circuit that determines a bias current in accordance with an output voltage of the charge pump circuit and a result of a comparison of a detected value of the output voltage and a reference voltage, wherein the digital control switching power supply unit controls in such a way that the A / D conversion cycle is synchronized with the switching cycle.

The embodiment of the invention provides an array substrate, a manufacturing method and a display device, and relates to the technical field of display. The method can solve problems that the signal transmission delay time is different because the bigger difference of the distance between a shielding layer and a first signal line lead wire and the distance between the shielding layer and a second signal line lead wire, and thereby lateral stripes are generated in display. The array substrate comprises a display region and a wiring region outside the display region. The array substrate comprises a substrate, and the substrate is sequentially provided with a first conductive layer, a first insulating layer, a second conductive layer, a second insulating layer and a shielding layer located in the wiring region. The first conductive layer comprises a first signal line lead wire of the wiring region, and the second conductive layer comprises a second signal line lead wire of the wiring region. The orthographic projections of the first and second signal line lead wires are not overlapped. The difference between the vertical distance from the first signal line lead wire to the shielding layer and the vertical distance from the second signal line lead wire to the shielding layer is less than the thickness of the first insulating layer.

The invention relates to a video conference realizing method and a video conference realizing system. The method comprises the following steps that all broadband mobile hotspot equipment participating in a conference sends local panoramic video images and sound signals to a multipoint conferencing server; the multipoint conferencing server sends the received panoramic video images and the sound signals to other broadband mobile hotspot equipment participating in the conference except sending parts; and after all broadband mobile hotspot equipment participating in the conference receives the panoramic video images and the sound signals of other broadband mobile hotspot equipment participating in the conference, the local panoramic video images and the received panoramic video images are assembled into conference panoramic video images, and the conference panoramic video images and the received sound signals are synchronized and are then sent to mobile terminals participating in the conference under the broadband mobile hotspot equipment. The method and the system have the advantages that the flexible mobility and the 3G (3rd Generation) and Wi-Fi features of the broadband mobile hotspot equipment are utilized, the problem of multimedia signal transmission delay is solved, and in addition, the limitation that conference places need to be concentrated is solved.

Provided is an optical transponder that receives a tributary signal such as a SDH / SONET signal, a GbE (Gigibit Ethernet) signal, and a SAN (Storage Area Network) signal in a WDM (Wavelength Division Multiplexing) transmission system and a SDH (Synchronous Digital Hierarchy) / SONET (Synchronous Optical Network) system, and more particularly, to an optical transponder having a switching function. The optical transponder having a switching function includes: a switch changing a data path of an input tributary signal from a plurality of channels (ports); an STM-64 / OC-192 mapper / demapper mapping the tributary signal switched to a different data path by the switch to an STM-64 / OC-192 signal or demapping the STM-64 / OC-192 signal to the tributary signal; and a transmission delay time compensator compensating for a differential delay caused by a transmission route difference on an optical fiber link when the STM-64 / OC-192 signal is demapped to the tributary signal.

The invention belongs to the field of electric vehicle chassis control technologies and systems, and particularly relates to an electric vehicle reliable network-controlled chassis system and a control method thereof. A main-auxiliary type redundant three-bus network topology and a layered management function framework are adopted, the electric vehicle reliable network-controlled chassis system comprises a driving subsystem, a steering subsystem, a braking subsystem and a vehicle control unit, and the layered framework includes a state judgment layer, a mode management layer and a strategy management layer. A state management module in the vehicle control unit is divided into a normal state and an auxiliary state according to the bus network state, a mode management module realizes the management of different control strategies, a strategy management module adopts the combination of a controller and a scheduler, a controller module is used for calculating control commands, and a scheduler module is used for scheduling command processing to realize the cooperative management of control strategies and scheduling strategies. The electric vehicle reliable network-controlled chassis system solves the problems of signal transmission delay, unsynchronization and network malfunction of the electric vehicle network-controlled chassis system, and the realtime and the fault-tolerant ability of vehicle chassis control are improved.

The invention discloses a Beidou B1 frequency point intermediate frequency signal simulation method. A simulation system mainly realizes the satellite signal simulation with in the arbitrarily given simulation time, the arbitrarily given simulated flight track and the arbitrarily given carrier-to-noise ratio. According to the method, the satellite signal transmission delay in the flight track is obtained through carrier flight track and satellite ephemeris resolving, through the delay and the influence of an ionized layer and a convection layer on the delay, ranging codes, navigation messages and carrier waves of corresponding satellites are generated, signals of the multiple satellites are synthesized into one path of signals, then, noise is added, and in addition, filtering, quantization and signal storage are carried out. The influence of the transmission delay calculation quantity on the consumed simulation time is considered, the flight track delay with the period being 0.2ms is calculated in advance, the transmission delay of each sampling point is calculated through interpolation, the precision is ensured, meanwhile, the data storage is greatly saved, and the simulation efficiency is improved.

The invention provides a low-loss and low-thermal-expansion magnesium-aluminum-silicon-based glass-ceramic material and a preparation method thereof, and belongs to the field of electronic ceramic materials. A glass ceramic is prepared from the following components in percentage by weight: 10-20% of MgO, 20-30% of Al2O3, 45-50% of SiO2, 5-10% of ZrO2, 1-5% of B2O3, and 1-5% of CaO. The glass ceramic prepared at the low temperature of 900-950 DEG C has the characteristics that the low dielectric constant is 5.2-6.2 (@1MHz), the low dielectric loss is 5-20*10<-4> (@1MHz), the high bending strength is 140-190 MPa, the high Young modulus is 80-100 GPa, and the low thermal expansion coefficient is 2.5-4.5*10<-6> / DEG C, the glass ceramic is used for ultra-large-scale integrated circuit packaging, signal transmission delay can be significantly reduced, power consumption is lowered, the glass ceramic is matched with a silicon chip well, the whole preparation technological process is simple, the raw material source is rich, and the glass ceramic is of great significance to industrial production.

The invention discloses a method for calibrating GPS standard time in a TD-SCDMA wireless communication system, which comprises the following steps: firstly, obtaining base station GPS standard time by a mobile terminal which needs positioning, then, obtaining signal round trip time from a base station by a wireless network controller, obtaining receiving and sending time differences from the mobile terminal, calculating signal transmission delay according the time differences, then, sending the signal transmission delay to a corresponding mobile terminal by the wireless network controller, and calculating terminal GPS standard time according to the GPS standard time and the signal transmission delay of the base station by the mobile terminal. More accurate GPS standard time can be obtained on the mobile terminal through transferring measured base station signal transmission delay and calibrating base station side GPS standard time which is obtained by the mobile terminal, thereby the receiving sensibility of an A-GPS receiver in a terminal device can be effectively improved, and the first positioning time can be reduced.

The invention provides a BPC Beidou multi-mode timing method and system. The method comprises the following steps of: receiving a BPC low-frequency timing signal broadcasted by a BPC signal transmission tower of the national timing center and a Beidou navigation signal transmitted by a Beidou satellite; determining if the received BPC low-frequency timing signal and the Beidou navigation signal are normal; if the Beidou navigation signal is abnormal, selecting the BPC low-frequency time code timing mode for timing; if the BPC low-frequency timing signal is abnormal, selecting the Beidou satellite timing mode for timing; if the Beidou navigation signal and the BPC low-frequency timing signal are normal, selecting both the BPC low-frequency time code timing mode and the Beidou timing mode for timing; and correcting the BPC low frequency time code timing by Beidou positioning. According to the BPC Beidou multi-mode timing method and the system, various timing modes are provided, a corresponding timing mode can be selected according to whether the received BPC low frequency timing signal and the Beidou navigation signal are normal, a BPC signal transmission delay can be corrected by the Beidou positioning so as to provide high precision timing, and flexibility and reliability of timing are improved.

A difference in delay of signal transmission due to the wiring within a board is minimized. A wiring board includes wiring for connecting terminals included in one of a plurality of semiconductor chips to terminals included in another one of the plurality of semiconductor chips, through branch points. Each of the plurality of semiconductor chips includes first and second terminals. Moreover, a first wiring up to the first terminals and a second wiring up to the second terminals are in a positional relationship of being shifted parallel to each other in a planar direction of the wiring board so as not to come into electrical contact with each other. In each of the first and second wirings, a wire is provided between a connection point for the terminal in a first one of the semiconductor chips and a position of a root, a complete binary tree structure in which all leaves are at the same depth from the root is formed, connection points for the terminals in the rest of the semiconductor chips are positioned at the respective leaves, and the paths of wires respectively corresponding to branches at the same depth in the tree structure include vias and the lengths of the paths of wires including the lengths of the vias are equal to each other.

A system and method of synchronizing transmissions in a simulcast system by continuously adjusting the signal transmission delay. Timing information that includes a GPS timestamp is continuously generated at a source site, encoded into a timing packet which along with a content signal can be transported over a network link such as T1 / E1 or a packet switched network to multiple transmitter sites. Once received at a transmitter site, the timing packet along with the content signal is delayed by an adjustable delay. The GPS timestamp in the received timing packet is compared to a GPS timestamp that is generated at the transmitter site upon arrival of the timing packet. Based on a variance between that comparison and the value of a user-specified target delay, the delay of the received signal is adjusted to synchronize signal transmissions in the simulcast system.

A moving coordinate accurate locating system comprises a controller, a horizontal base station group, a vertical base station group and a plurality of labels to be located. The controller comprises a synchronous control module and a signal processing module. The horizontal base station group comprises at least two base stations placed on the same horizontal height. The vertical base station group comprises at least two base stations with coincident projection in the vertical direction. The labels can emit frequency modulation continuous waves to indoor space after receiving signals emitted by the base stations. The synchronizing signal transmission delay between the controller and various base stations in the same base station group is the same. Through a digital signal processing algorithm, the influence on locating accuracy from rough synchronous errors between the base stations and the labels can be removed, during digital signal processing, the distances between the labels and various base stations obtained by computing are subjected to subtracting in a pairing mode, real-time errors are removed, and accurate locating on the labels is achieved.

An integrated circuit includes a delay locked loop configured to delay a reference clock signal by a delay time for delay locking and generate a delay locked clock signal, a clock transmission circuit configured to transmit the delay locked clock signal in response to a clock transmission signal, a duty correction circuit configured to perform duty correction operation on an output clock signal of the clock transmission circuit, and a clock transmission signal generation circuit configured to generate the clock transmission signal in response to a command and burst length information.