135 results about "Crosstalk interference" patented technology

The invention discloses a time synchronization method for a wireless sensor network. The method comprises the following steps of: generating a synchronous data packet, and marking a transmission timestamp in the synchronous data packet; transmitting the synchronous data packet to a child node; receiving the synchronous data packet, and marking a receiving timestamp in the synchronous data packet; and compensating for the clock drift of the child node according to the transmission timestamp and the receiving timestamp in the synchronous data packet. By the time synchronization method and the time synchronization system for the wireless sensor network, clock drift compensation between a parent node and the child node is realized only by transmitting the synchronous data packet to the child node to realize regional time synchronization in a region formed by the parent node and the child node, and compared with conventional all-network time synchronization, the regional time synchronization reduces network energy consumption and also can avoid the energy consumption caused by crosstalk interference as much as possible.

Embodiments herein are primarily described in the context of a system, a method, and a non-transitory computer readable medium for producing a sound with enhanced spatial detectability and reduced crosstalk interference. The audio processing system receives an input audio signal, and performs an audio processing on the input audio signal to generate an output audio signal. In one aspect of the disclosed embodiments, the audio processing system divides the input audio signal into different frequency bands, and enhances a spatial component of the input audio signal with respect to a nonspatial component of the input audio signal for each frequency band.

The invention provides a two-dimensional area array ultrasonic transducer and a manufacturing method thereof. The two-dimensional area array ultrasonic transducer comprises a piezoelectric array element array layer, array element electrodes, decoupling materials, backing blocks, electrode leads, a public electrode and a matching layer, wherein the piezoelectric array element array layer is formed by arranging M*N piezoelectric array elements which are divided by joints and used for receiving or transmitting ultrasonic signals, the array element electrodes are sputtered on the first surface of the piezoelectric array element array layer and cut and divided according to the joints, each array element electrode corresponds to one piezoelectric array element, the joints are filled with the decoupling materials which are used for lowering crosstalk interference of the piezoelectric array elements, the backing blocks are stuck to the array element electrodes and used for absorbing sound energy of the back faces of the piezoelectric array elements, the electrode leads are arranged on the backing blocks, the public electrode is sputtered on the second surface of the piezoelectric array element array layer, and the matching layer is stuck to the public electrode and used for achieving impedance matching between the piezoelectric array elements and external objects.

A power back-off system and method to mitigate far-end crosstalk interference between channels in a communication system through a generalization of the reference length and equalized FEXT methods, a power back-off method is provided that allows for control over the SNR of the channels by trading SNR on shorter channels against SNR on the longer channels. The generalization also provides for a power back-off method that can provide for two or more data rate service areas.

The invention discloses a dual mode communication terminal for suppression dual mode signal RF interference which comprises a first base band processing module, a first interference control module, a second base band processing module and a second interference control module. The first interference control module comprises a first private interference compressing channel and a first non-private interference-compressing channel. The second interference control module comprises a second private interference compressing channel and a second non-private interference-compressing channel. When the first base band processing module detects that in terminal the second mode signal affecting the first mode signal's receiving, the first interference control module selects the first private interference compressing channel to compress the second mode signal. When the second base band processing module detects that in terminal the first mode signal affecting the second mode signal's receiving, the second interference control module selects the second private interference compressing channel to compress the first mode signal.

The invention discloses a manufacturing method of a full-color Micro-LED display device based on a quantum dot photo-conversion layer, and relates to the technical field of preparation of displays. The following problems are solved: existing quantum dot materials are directly coated with the surface of Micro-LED, and after a coating process is completely carried out, the quantum dot materials arranged above adjacent pixel units can be horizontally diffused in a low-temperature heat annealing process, and serious optical crosstalk interference can be caused by mixing the different quantum dot materials. Light source arrays are tightly adhered with quantum dot film layers so that difficult separation between the light source arrays and the quantum dot film layers is achieved; a photo-conversion layer base plate is prepared by coating quantum dot material subareas of different colors with different positions of glass or polymer base plates; a monochromatic Micro-LED display array is adhered with the photo-conversion base plate, so that full-color display of the Micro-LED is realized. A DBR reflective mirror is prepared at the bottom of a groove so as to inhibit emission of the monochromatic Micro-LED display array, so that a light source utilization ratio is increased. The full-color Micro-LED display device prepared by adopting the method has the advantages of less optical crosstalk interference of the adjacent pixels, high utilization ratio of excitation light sources and high display quality.

The invention relates to a high-speed and high-density electric connector which is provided with a central shielding needle. The high-speed and high-density electric connector comprises a needle connector and a hole connector. The needle connector consists of an insulating base, grounding shielding needles and differential contact element pairs, wherein the grounding shielding needles and the differential contact element pairs are arranged in the insulating base. The hole connector consists of a laminated component, a guide end cover and a locking board, wherein the laminated component is arranged in the guide end cover and is fixedly locked by using the locking board, and the grounding shielding needles are distributed on the circumferences of each differential contact pairs and differential signal pairs in the needle connector and the hole connector, therefore, the crosstalk interference between signal pairs can be reduced, and the whole shielding of a high-speed transmission connector can be achieved; in addition, the invention is compact in structure, easy for expanding, lower in cost, small in encapsulation size, more economic, has the working characteristics of high-quality signals and is convenient for the user.

A common-voltage compensation circuit functions to provide a crosstalk interference suppressing mechanism for use in a liquid crystal display having a liquid-crystal capacitor and a storage capacitor. The compensation circuit includes a buffer for receiving a preliminary common voltage, a current / voltage converter, a high-pass filter and a ripple-voltage inverter. The current / voltage converter is utilized for generating a liquid-crystal capacitor common voltage furnished to the liquid-crystal capacitor according to an output current of the buffer. The high-pass filter performs a high-pass filtering operation on the liquid-crystal capacitor common voltage for extracting a ripple voltage. The ripple-voltage inverter is employed to generate a storage capacitor common voltage furnished to the storage capacitor through performing an inverting operation on the ripple voltage based on the preliminary common voltage. The ripple voltage of the storage capacitor common voltage has a phase opposite to that of the liquid-crystal capacitor common voltage for suppressing crosstalk interference.

The invention provides a terminal cluster of an electric connector and the electric connector thereof. The terminal cluster of the electric connector comprises a terminal array area which is used for forming on a housing surface and furthermore the terminal array area comprises a plurality of longitudinally and successively arranged terminal rows in parallel, wherein each terminal row comprises at least one signal transmitting unit and at least one grounding unit. The at least one signal transmitting unit and the at least one grounding unit are transversely and alternately arranged, thereby reducing crosstalk interference of the terminal and crosstalk interference to outside and simultaneously reducing number of grounding elements required in a unit area and increasing proportion of signal transmitting terminals so as to improve transmission efficiency.

A method and apparatus for reducing crosstalk between sensors in an inline Fabry-Perot (FP) sensor array. The inline FP sensor array comprises a plurality of fiber Bragg gratings arranged periodically along an optical fiber. The sensors are formed between each of the Bragg gratings. A light source provides multiplexed pulses as interrogation pulses for the array. The light pulses are applied to one end of the sensor array and a light detector detects reflected pulses. The detected pulses comprise a composite of reflections from all the Bragg gratings along the fiber. The apparatus processes the detected signals using an inverse scattering algorithm to detect an accurate phase response from each of the Bragg sensors while reducing crosstalk from other Bragg sensors within the array. One form of inverse scattering algorithm is a layer-peeling algorithm.

A high frequency connector is disclosed. The high frequency connector includes an insulating housing, a plurality of insulating pieces, and a plurality of terminals. Each of the terminals is respectively assembled to the insulating pieces. The plurality of insulating pieces are assembled to the insulating housing. Each of the insulating pieces has a first surface and a second surface. A plurality of recesses are formed on each of the first surface and the second surface. The recesses are arranged in parallel on each of the first surface and the second surface. A plurality of impedance adjustment holes are arranged on each of the first surface and the second surface in an interlaced manner. The impedance adjustment holes are disposed between the recesses. Each of the terminals is received in the impedance adjustment hole or the recess, so as to improve characteristic impedances and crosstalk interferences of the terminals.

The embodiment of the invention relates to a power supply device and a power supply method of a vehicle-mounted electronic device. The power supply method mainly comprises the steps of receiving the voltage output by a vehicle-mounted power supply through an electronic circuit, detecting the voltage, judging whether a voltage value obtained through the detection is lower than a set voltage over-low threshold value or higher than a set voltage over-high threshold value, and switching off the electronic circuit through an electronic switch if so; and outputting the voltage to the vehicle-mounted electronic device through the electronic circuit if not. According to the power supply device and the power supply method, which are disclosed by the embodiment of the invention, the situation of switching off a power supply of the vehicle-mounted electronic device in time when the voltage output by an automobile vehicle-mounted power supply is in the phenomena of under-voltage and over-voltage can be realized, the vehicle-mounted electronic device can be prevented from being damaged due to the damage of the power supply of the vehicle-mounted electronic device caused by over-high voltage output by the power supply of an automobile power supply and can be prevented from working unreliably due to over-low voltage output by the power supply of the vehicle-mounted electronic device caused by over-low voltage output by the automobile power supply, and the influence of various interferences such as crosstalk interference of the vehicle-mounted power supply on the vehicle-mounted electronic device can be effectively solved.

The invention provides a TFT (thin film transistor) array substrate. Through increase of the area of a drain (420) of each TFT (900) located in a shading area, the horizontal projection of the drain (420) is overlapped with the horizontal projection of part of a corresponding common electrode (600), and the drain (420) and the common electrode (600) constitute a first memory capacitor (Cst1), a corresponding pixel electrode (800) and the common electrode (600) constitute a second memory capacitor (Cst2), the pixel electrode (800) and the drain (420) are contacted to form electrical connection and are isopotential, the first memory capacitor (Cst1) and the second memory capacitor (Cst2) are connected in parallel to constitute a memory capacitor, and the capacity of the memory capacitor is equal to the capacity sum of the first memory capacitor (Cst1) and the second memory capacitor (Cst2). Under the premise that the aperture rate is not reduced, the capacity of the memory capacitor can be increased, the problems of crosstalk interference, image sticking and the like are solved, and the display quality of a product is improved.

Embodiment of the invention provides a wavelength selection switch, which suppresses crosstalk by adjusting the polarity of the optical signal based on the structure of the covnentional 1 * N wavelength selection switch, so that the input optical signals of different paths have different polarities when being incident on a switch engine, and crosstalk between the different paths of light can be suppressed by filtering the polarity for the light signal reflected by the switching engine. The inhibition of crosstalk interference in the M * N ( N input optical fiber ports, M output optical fiber ports; or M input optical fiber ports, N output optical fiber ports, wherein M and N are natural numbers greater than or equal to 2) wavelength selection switch can be achieved.

A method is provided for reducing interferences in communications exchanged along a plurality of communication channels extending between a DSLAM and subscribers' terminals. The method comprises i) storing a mathematical representation of the plurality of communication channels; ii) measuring at least one parameter characterizing a first communication channel; iii) applying the measured parameter(s) to update the mathematical representation of the first communication channel if required and replacing the mathematical representation of the first communication channel with the updated mathematical representation thereof. At times when communications are exchanged along that first communication channel, applying updated mathematical representations of the first communication channel together with most recent mathematical representations available of one or more other communication channels that are physically adjacent to the first communication channel in order to estimate expected interferences in communications to be exchanged along that first communication channel, modifying at least one operating parameter of the first communication channel in response to said estimation; and repeating the former steps for at least one other communication channel.

A network device for eliminating interference among transmitting ports comprises a plurality of transmitting ports and at least a cross-port near-end crosstalk canceller. The cross-port near-end crosstalk canceller is a special transmitting port which is coupled in a plurality of transmitting ports and used for eliminating the near-end crosstalk interference of other transmitting ports in a plurality of transmitting ports. The cross-port near-end crosstalk canceller is operated in time domain or frequency domain. In an embodiment, the network device is a switch.

A combined audio-visual device for cars includes a housing, a seat, a slot-type loading DVD player, a liquid crystal display (LCD) screen, two rotating hinges, a crosstalk interference suppression infrared emitter and wireless headphones. The slot-type loading DVD player reads audio and video data, respectively, and sends video output data to the LCD screen and the audio data to and through the crosstalk interference suppression infrared emitter; the video data is then be shown as image on the LCD screen and the audio data is transmitted as sound through the wireless headphones. The device according to the present invention is applicable to use on various cars to simultaneously satisfied demands of different users i.e., the audio-visual enjoyment for some passengers and at the same time, the quiet and peaceful for others.

The present invention discloses a Universal Serial Bus (USB) connector which includes a first terminal set and a second terminal set. By increasing the width of a connection portion of a ground line terminal of the signal ground line terminal within the second terminal set, and bending two pairs of the signal terminal within the second terminal set toward one side respectively and surrounding two sides of the signal ground line terminal connecting section so as to let two pairs of the signal terminals away from the signal terminals in the first terminal set so as avoid the crosstalk interference caused by the first pair of the signal terminals in the second pair of the signal terminals and the third pair of the signal terminals to stabilize the transmission.

In an integrated circuit package, a method for insulation and reinforcement of individual bonding wires in an integrated circuit package. Using an airbrush, bonding wires are sprayed and coated with an insulating material prior to the molding process. Mold flow induced short rejects are eliminated as a result of: (a) Electrically insulating the bonding wires by coating them with an insulating mixture; (b) Physically isolating the bonding wires as a result of bead formation around individual bonding wires, with the insulating beads acting as contact barriers between the bonding wires; and (c) Enhancing the structural rigidity of the bonding wires as a result of the coating. Reinforcement and separation of bonding wires also reduces inductive coupling and / or crosstalk interference due to proximity of bonding wires.

The invention belongs to the technical field of integrated circuits, and in particular relates to a monopole programmed resistance memory and a storage operation method therefor. The memory adopts a multicomponent metal oxide with two or more components (such as CuxO in which x is more than 1 and less than or equal to 2, WOx in which x is more than or equal to 2 and less than or equal to 3, and the like) as a resistance conversion memory structure of a storage resistor, wherein each memory unit comprises a gating device and two or more storage resistors and diodes; the storage resistors are connected in serial with the diodes to form a module; a first output electrode of each module is connected with the same gating device, and is coupled to a word line through the gating device; a second output electrode of each module is coupled to different bit lines to form the structure that a plurality of storage resistors and the diodes share the same gating device; and the diodes are directly connected with n-type metal oxide semiconductors through p-type metal oxide semiconductors to form pn heterojunction with unidirectional conduction. The memory has the characteristic of high storage density and no crosstalk interference produced during storage operation.

For compatible transmission of a television picture having an aspect ratio of 16:9 within a 4:3 system, transmission is effected in the letterbox format in accordance with the PALplus system specification. The receiver reconstructs the original picture with the aid of vertical filters and is able, furthermore, to suppress crosstalk interference from the luminance signals in the chrominance signals. To further improve the picture quality, the picture is displayed at a frame frequency of 100 Hz. For this purpose, the picture supplied at 50 Hz with line interlacing must be converted to a frame frequency of 100 Hz. Known concepts for PALplus decoding and 100 Hz conversion carry out these processes separately and in doing so require a great deal of memory space. By virtue of the memory control according to the invention, in which a field is stored in different memory areas (M1, M2), successive lines of a field not being stored in successive address areas or only partially being stored in successive address areas, the PALplus decoding and simultaneous 100 Hz conversion are possible with two memory modules. As a result, a decoder with 100 Hz reproduction is possible with reduced costs.

In aspect, the disclosure includes a method of configuring a MIMO wideband receiver. The method would include estimating, on a SISO basis, a set of post-processing parameters for a plurality of receiver channels; receiving, by each of the plurality of receiver channels, a first test signal which is transmitted from a first transmitter channel on a MIMO basis; calculating a first set of crosstalk parameters in response to receiving the first test signal; receiving, by each of the plurality of receiver channels, a second test signal which is transmitted from a second transmitter channel on the MIMO basis; calculating a second set of crosstalk parameters in response to receiving second test signal; and calculating the set of post-processing parameters based on the first set of crosstalk parameters and the second set of crosstalk parameters by cancelling a crosstalk interference among plurality of receiver channels.

A signal transmission cable with insulation piercing terminals includes a flat cable having a plurality of conductors, and a plurality of conductive terminals electrically connected to an end of the flat cable. The conductors respectively have a sheathed section, and a bare section located at an end of the sheathed section and having a length ranged between 0.01 mm and 4 mm. The sheathed sections are respectively surrounded by a first sheath before being together surrounded by a second sheath. The conductive terminals respectively include a spring contact and a plurality of piercing sections formed at an end of the spring contact for electrically connecting to the conductors of the flat cable. The bare sections with a defined length can reduce the stub effect on a signal transmitted via the signal transmission cable to achieve better impedance matching and reduced crosstalk interference during digital signal transmission.

A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complementary transmitter. The interference filter, for example, can correct for near-end cross-talk and echo interference filtering and / or far-end crosstalk interference filtering is presented. A transceiver can include a transmitter portion and a receiver portion with one or more receivers coupled to receives signals in the plurality of frequency separated transmission channels. A baseband transmitter can be combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands). In some embodiments, one baseband PAM transmitter is combined with one or more frequency separated QAM transmitters.

The invention discloses a method for obtaining crosstalk interference information, comprising the steps: according to the validity judgment condition, efficient actual transmission power at the side of a digital subscriber line and receiving noise spectrum data are obtained; and crosstalk interference function is calculated according to the efficient actual transmission power and the receiving noise spectrum data. The embodiment of the invention also provides a device used for obtaining crosstalk interference information. By adopting the invention, according to the validity judgment condition, the efficient actual transmission power at the side of a digital subscriber line and the receiving noise spectrum data can be obtained; the crosstalk interference function can be imputed without needing large amount of data, so that the crosstalk interference information can be obtained, and the operational capability is greatly enhanced.

The invention discloses a simple and reliable low-cost silicon carbide power switch device driving circuit. The driving circuit comprises a full-bridge push-pull circuit, an isolation driving transformer, a gate positive voltage driving circuit and a gate negative voltage driving circuit; the full-bridge push-pull circuit consists of two N type metal oxide semiconductor field effect transistor (MOSFETs) and two P type MOSFETs, the centers of front and rear bridge arms of the full-bridge push-pull circuit are connected to primary windings of the isolation drive transformer via a parallel RC circuit; two secondary windings of the isolated driving transformer together with the gate positive voltage driving circuit and the gate negative voltage driving circuit complete the direct driving of the upper and lower bridge silicon carbide power devices. The silicon carbide power switching device driving circuit provided by the invention can provide a higher forward driving voltage and a lower reverse turn-off voltage to avoid crosstalk interference, the circuit is simple, the cost is low, the upper and lower arm bypass can be avoided, the primary and secondary electrical isolation can be avoided, and the reliability is high.

The invention relates to a method for regulating and generating scanning signals as well as a driving device applying same, which is applied to a scanning line driving device, and the scanning line driving device is used to respectively output a scanning signal to multiple scanning lines connected with a display panel. The method comprises the following steps: firstly measuring a starting point ofa rising edge and a finishing point of a falling edge of a duty cycle of each scanning signal; then computing the difference between the finishing point of the falling edge of the duty cycle of the previous scanning signal and the starting point of the rising edge of the duty cycle of the next scanning signal; and finally, regulating the duty cycle of each scanning signal according to the difference to bring forward the finishing point of the duty cycle of the previous scanning signal to the starting point of the duty cycle of the next scanning signal. By adopting the invention, non mutual overlapping of the two scanning signals is achieved so as to avoid the occurrence of crosstalk interference.

A method allowing the elimination of crosstalk interference, through the semiconductive substrate, between portions of a circuit provided on a same substrate comprising an upper semiconductive layer and an underlying dielectric layer, for instance an SOI wafer, wherein said portions are separated one from each other by forming trenches on said substrate either down to the dielectric layer or, in the case of an SOI substrate, down to the lower semiconductive layer.