152results about How to "Suppress mutual interference" patented technology

The invention relates to a car anti-collision radar with anti-interference and multi-target identification functions and a detection method thereof, belonging to the technical field of radar communication and the field of car electronics. The radar device and the detection method thereof not only can be used for measuring the distance and the relative speed of a target, but also can be used for identifying a plurality of targets in a complex environment and eliminating false targets; particularly, under the condition of simultaneous use of a plurality of radars with the same frequency range and the same system in a detection range, mutual interference among the radars can be suppressed so as to correctly judge a real target; and a modulation waveform of the radar is a major cycle TB repetitive waveform combined by a plurality of minor cycle TL modulation waveforms according to a random principle, and different radars are configured with different modulation waveforms in the major cycle, so interference signals of other radars can be analyzed out by a signal processing circuit so as to suppress interference and eliminate error detection caused by the interference.

In a conventional OFDMA / SCFDMA communication scheme, frequency resource assignment information is exchanged between BSs via a wired interface and used for control of inter-cell interference or the like. When a BS performs assignments of frequency resources, taking the status of a neighbor BS signaled via the wired interface into account, it might be impossible to follow a change in the status of the assignments of frequency resources at the neighbor BS due to a delay occurring in the wired interface. BS selects and assigns distributed frequency resources or continuous frequency resources, depending on the position of an MS in the cell and the transmit power of the BS.

The invention provides a double-valve fuel injecting device with an electric-control monoblock pump and an electric-control fuel injector, comprising the electric-control monoblock pump, a high-pressure fuel pipe and the electric-control fuel injector. The double-valve fuel injecting device is characterized in that a pressure accumulator and electromagnetic valves are arranged on the electric-control fuel injector, an inlet of the pressure accumulator is connected with the electric-control monoblock pump through the high-pressure fuel pipe, an outlet of the pressure accumulator is connected with a fuel inlet hole of the electric-control fuel injector, and the electromagnetic valves are installed on a throttle valve of the electric-control fuel injector and are connected with the throttle valve. Through the matching control on the electromagnetic valves of the monoblock pump and the electric-control fuel injector, the double-valve fuel injecting device can eliminate the influence of the rotary speed of a diesel engine on fuel injection pressure, inhibit the influence of pressure oscillation in the fuel injection process on the fuel injection, and flexibly control accumulating pressure before the fuel injection and the opening pressure of a fuel injection needle valve, thereby realizing the flexible control on the fuel injection pressure and the injection rule; and then the double-valve fuel injecting device satisfies the requirements of the diesel engine for the fuel injection when the diesel engine runs under different working conditions, improves the economical efficiency and the dynamic property of the diesel engine, and reduces the discharge of harmful matters.

A thin plate-shaped six-axis force sensor chip comprising a semiconductor substrate formed by semiconductor film-forming processes, the sensor chip having through-holes formed therein and arranged so that the sensor chip is functionally divided by the through-holes into an action part to which an external force is applied, a support part to be fixed to an external structure, and a plurality of connecting parts each connecting together the action part and the support part and having a bridge portion of generally T-shaped configuration joined to the action part and an elastic portion joined to the support part. Each of the connecting parts has a plurality of strain resistance devices each comprising an active layer formed on at least one of front and rear faces thereof in an area thereof where deformation strain effectively occurs, the strain resistance devices being electrically connected to corresponding electrodes disposed in the support part.

A gate driver is provided with an odd-numbered stage shift register, an even-numbered stage shift register, and main lines including clock signal main lines. In at least one example embodiment, each stage of one of the shift registers receives the first clock and the second clock from the clock signal main lines, and the third clock and the fourth clock from an adjacently provided stage of the other shift register. Each stage of the shift register can receive the second clock from a different stage of the same shift register. With this, it is possible to reduce a picture-frame area of a panel in a display device provided with a scanning signal line drive circuit having the plurality of shift registers.

The method assigns a specific scrambling group as pilot frequency for each sub zone. Based on multiplexing number of users, each user selects a code sequence in scrambling group of sub zone the user locates in as basic pilot frequency dynamically. Using multiplexing mode of basic pilot in frequency domain obtains sequence of pilot frequency of the user. The invention realizes orthogonal pilot frequencies of users in sub zone in frequency domain, and smaller correlativity of pilot frequency between sub zones so as to restrain mutual interference of users' pilot frequencies inside sub zone and between sub zones, raise precision for estimating channel, and improving throughput of users at border area of sub zone.

The invention discloses a radio frequency receiver and a receiving method. The receiving method comprises the following steps of: carrying out frequency band separation on a radio frequency signal with multi-carrier aggregation so as to obtain at least one frequency band signal and output; respectively carrying out filtering and amplification processing on the at least one frequency band signal so as to obtain at least one processing signal; generating a plurality of oscillation signals; selectively receiving a processing signal comprising target carrier from the at least one processing signal, receiving one oscillation signal corresponding to the target carrier, selectively selecting a frequency dividing ratio from a plurality of frequency dividing ratios, carrying out frequency division on the oscillation signal corresponding to the frequency dividing ratio to obtain a local oscillation signal, carrying out frequency mixing on the received processing signal comprising the target carrier by utilizing the local oscillation signal so as to obtain a frequency mixing signal, and generating a baseband signal corresponding to the target carrier based on the frequency mixing signal, herein mutual interference between the oscillation signals is restrained through respectively selecting the frequency dividing ratio.

The present invention relates to an encoding frequency-hopping high-resolution distance-measuring speed-measuring method and radar. In particular, it is applicable to automobile anti-collision radar and police speed-measuring radar, and can be substituted for infrared alarm to make all-weather real-time safety supervisory control for large-range sensitive area. Said invention also provides the concrete steps of said distance-measuring and speed-measuring method, and can make several radars have strong anti-interference power when they are simultaneously worked.

A vehicle driving control apparatus is provided at least with: a rudder angle varying device capable of changing a relation between a steering angle, which is a rotation angle of a steering input shaft, and a rudder angle, which is a rotation angle of steered wheels; and a trajectory controlling device for controlling the rudder angle varying device such that a trajectory of a vehicle approaches a target driving route of the vehicle. The vehicle driving control apparatus is further provided with a changing device for changing responsiveness of control by the trajectory controlling device when there is a steering input given to the steering input shaft through a steering wheel by a driver of the vehicle.

The invention relates to a time shift phase difference steady harmonic signal correction method based on a Nuttall window and belongs to the harmonic wave analysis field; the method adopts the Nuttall window for weighting the harmonic signal and combines the phase difference correction theory for obtaining the frequency correction amount for correcting and analyzing the harmonic wave. The time shift phase difference steady harmonic signal correction method based on the Nuttall window can restrain the base wave caused by the spectrum leakage and the mutual interference among the integer harmonic waves, compared with the harmonic wave analysis specific value correction method and the other window parameter, the time shift phase difference steady harmonic signal correction method based on the Nuttall window can obtain higher calculation precision at the same signal truncation time.

The disclosed PCB comprises: at least one signal layer with at least one isolative grounding line and two near signal lines, and a grounding layer. Wherein, the isolative grounding line contains some through-holes connected with the grounding layer, and the distance of two near holes enables the EM wave resonant frequency over the highest frequency of signal in the signal line. This invention can inhibit the line interference efficiently.

The invention discloses an optical frequency domain reflectometer with optical wave frequency shift modulation, which comprises a narrow linewidth scanning laser, a first optical fiber coupler, an optical circulator, a to-be-measured optical fiber, an optical wave frequency shifter, a second optical fiber coupler, a first polarization beam splitter, a second polarization beam splitter, a first balanced photodetector, a second balanced photodetector, a third optical fiber coupler, a first Faraday rotating mirror, a second Faraday rotating mirror, a reference optical fiber interferometer, a photodetector and a signal acquisition and processing unit. Through frequency shift modulation on measurement light and reference light, interference signals produced by superposition of scattering signal light of the to-be-measured optical fiber which is symmetrical about zero delay and local oscillation light are separated on the spectrum. According to the optical frequency domain reflectometer with optical wave frequency shift modulation, mutual interference among the interference signals of the to-be-measured optical fiber scattering signal light which is symmetrical about zero delay can be suppressed, measurement of the scattering signal light which is symmetrical about zero delay can be realized, and the maximum optical fiber measurement length can be improved.

An automobile occupant protection device is provided including: a driver's seat airbag; and a curtain airbag that is configured including a main chamber, an auxiliary chamber that is provided at a vehicle front side of the main chamber and that is disposed at a position bent toward the vehicle width direction inner side with respect to the main chamber as viewed along a vehicle up-down direction from inside the vehicle cabin, a non-inflating portion that is disposed between the main chamber and the auxiliary chamber, and a first gas supply path that is capable of supplying gas from the main chamber to the auxiliary chamber. The non-inflating portion is disposed at a position facing, in the vehicle width direction, a maximum external diameter portion of the driver's seat airbag where an external diameter of the driver's seat airbag is largest.

A semiconductor device is disclosed in which a plurality of memory cores are provided on a semiconductor chip. Each of the memory cores comprises: first and second circuit regions and a first and second through electrode groups. a first power supply is supplied in the first circuit region in which a data bus for parallel data is driven, and a second power supply separated from the first power supply is supplied in the second circuit region in which the parallel data and serial data are bidirectionally converted. The first through electrode group includes through electrodes supplying the first power supply to the first circuit region, and the second through electrode group includes through electrodes supplying the second power supply to the second circuit region.

The embodiment of the invention provides a method, a device and equipment for identifying multiple paths of voice as well as a readable storage medium. The method comprises the following steps: receiving audio data collected by multiple paths of microphone arrays, carrying out wave beam formation treatment on each path of audio data to obtain audio signals corresponding to audio collection areas in each path of audio data, and weakening audio signals in other directions of the path of audio data; carrying out interference inhibition treatment on multiple paths of audio signals to obtain voicesignals corresponding to each audio collection area, reducing interference of noise signals of other audio collection areas on the path of voice signals, carrying out voice identification of the voicesignals to obtain a voice identification result corresponding to each audio collection area, and improving identification rate of the voice identification; inhibiting mutual interference among the multiple paths of voice signals when multiple people talk at the same time to obtain a voice identification result corresponding to each audio collection position, and improving the efficiency and accuracy of voice identification.

This secondary cooling device for a continuous casting machine is provided with a plurality of pairs of support roller and a plurality of nozzles, and each support roller has: a plurality of roller sections split in the widthwise direction of a cast strand; and grooves provided between the roller sections. The grooves provided to each upstream-side support roller and downstream-side support roller adjacent in the direction of conveyance are disposed offset from each other in the widthwise direction. A first nozzle among the plurality of nozzles is disposed at a first nozzle position set between a roller section provided to an upstream-side support roller and a groove provided to a downstream-side support roller.

A communication device, including: a touch sensor configured to detect a touch or an approach of an input object by detecting a change in capacitance; a near field communicator configured to perform near field communication with an information processing terminal present in a communication area in which near field communication is possible, the information processing terminal being capable of performing the near field communication; and a controller configured to control the communication device in accordance with detection of the touch or the approach of the input object by the touch sensor, wherein the controller is configured to reduce detection sensitivity of the touch sensor for detecting the input object when the information processing terminal is in the communication area.

In a multilayer substrate, eight front-side antenna portions and eight back-side antenna portions are disposed. Front-side radiation elements in the front-side antenna portions and back-side radiation elements in the back-side antenna portions are arranged in a staggered pattern when being vertically projected onto an back side of the multilayer substrate. The front-side radiation elements are disposed on a front side of the multilayer substrate, and a front-side ground layer is formed near the back side of the multilayer substrate. On the other hand, the back-side radiation elements are disposed on the back side of the multilayer substrate, and a back-side ground layer is formed near the front side of the multilayer substrate. The front-side radiation element and the back-side radiation element are disposed so as not to overlap each other when being vertically projected onto the back side of the multilayer substrate.

The invention relates to a resource scheduling optimization method based on channel signatures in a D2D communication network. The method comprises the steps of utilizing the time reversal technologyfor executing channel signature design on honeycomb users and D2D users; adopting a Stackelberg game model for setting the best price for the honeycomb users and distributing the best transmitting power for the D2D user pairs; according to the D2D user capacity gain planning target, adopting a capacity gain region limiting mechanism for distributing candidate honeycomb user link resources for theD2D user pairs; according to the requirement for the D2D user resource reuse fairness, adopting a resource reuse threshold value for limiting the number of D2D user reuse resources; in order to sufficiently utilize the honeycomb user link resources, distributing the D2D user pairs for the idle honeycomb users, and the maximizing the system throughput. The honeycomb user service quality is ensured,the interference between users is restrained, the spectrum efficiency is improved, the honeycomb system capacity loss is lowered, and the system user resource reuse fairness is improved.

A clutch mechanism includes: an input rotary member for receiving an input torque; a hub for receiving the torque from the input rotary member; first friction discs held by the hub; second friction discs arranged to be pressed against the first friction discs to achieve a torque-transmitting engagement therebetween; a drum supporting the second friction discs and stopped by the drum support bearing against movement in one axial direction; and an output rotary member for receiving the torque from the drum. Transmission of the torque from the drum to the output rotary member is achieved by a spline coupling therebetween. Axial movement of the drum in one direction is stopped by an end surface of a drum support bearing mounted in a housing. The hub is splined to the input rotary member for axial movement relative to the rotary input member.

The invention discloses a reliable communication based femtocell user clustering method in a cognition heterogenous network. The clustering method comprises the following steps: at the initial moment of each time slot, acquiring position information of non-clustered femtocell base stations by perceiving available spectrum of the stations; under the management of an integrated controller, obtaining path loss information among all femtocell base stations with communication users to be regarded as interference among the femtocell users; randomly selecting one existing femtocell user cluster for the non-clustered femtocell users, calculating the interference subjected by each femtocell base station; if all the femtocell base stations in the cluster satisfy the interference limiting condition, enabling the femtocell users to join the cluster; if not, selecting other clusters, and judging whether the femtocell users satisfy the condition to join the other clusters or not. The clustering method improves stability and anti-interference performance of femtocell base station communication.

The invention provides combined stiffness-variable thin film pMUTs and a preparation method thereof. A combined stiffness-variable thin film structure is composed of circular thin film and annular thin film which surrounds the circular thin film in the circumferential direction and is concentric with the circular thin film; according to different working condition demands, the thickness of the circular thin film and the thickness of the annular thin film are adjusted separately to achieve combined stiffness-variable thin film; the overall structure of the combined stiffness-variable thin filmpMUTs sequentially comprises an upper electrode, a vibration thin film piezoelectric driving layer, a lower electrode, a vibration thin film structural layer, a thin film supporting structure and a base structure from top to bottom; when the combined stiffness-variable thin film pMUTs are used in a mode of emitting ultrasonic waves, the circular thin film and the annular thin film are excited according to a certain phase difference, the coupling effect among the circular thin film, a fluid medium and the annular thin film is achieved, and the unit ultrasonic wave emitting power is greatly increased; when the combined stiffness-variable thin film pMUTs are used for receiving the ultrasonic waves, the ultrasonic wide bandwidth receiving performance is achieved through the resonance frequencydeviation of the circular thin film and the annular thin film in the fluid medium. The combined stiffness-variable thin film pMUTs have the high emitting power and wide bandwidth receiving performance.

A printed wiring board, comprising a signal plane having a baseband block for processing a baseband signal and a high-frequency block for processing a high-frequency signal which is obtained by converting the baseband signal, and a ground plane opposing to the signal plane. The baseband block and the high-frequency block are connected through a transmission line for transmitting a signal of a specific frequency region. The ground plane is provided with a first ground portion and a second ground portion, the first ground portion being provided at an area opposing to the baseband block, the second ground portion being provided at an area opposing to the high-frequency block. The first ground portion and the second ground portion are coupled to each other through a coupling portion provided therebetween which has a low impedance with respect to the signal of the specific frequency region.

A path routing from a write current source supplying a write current through an internal data line, a bit line and a source line to a reference potential except a memory cell is configured to have a constant resistance independent of a memory cell position selected in a memory array, and each of the resistance value of the current path between the memory cell and the write current source and the resistance value of the current path between the selected memory cell and the reference potential node is set to 500Omega or lower. A nonvolatile semiconductor memory device having improved reliability of data read / write is achieved.

A low-cost communication system utilizing a code division multiple access, which controls scale-up of an apparatus due to the provision of an interference suppressing function in a base transceiver station, prevents the reduction of channel utilization efficiency, and enables a high-quality communication. Conventionally, a signal obtained through an interference cancellation stage process has been processed at subsequent cascade-connected stages. The interference cancellation stage process has been carried out by cascade-connecting several circuits performing the same process in a multi-stage interference-canceling device. However, in the present invention, by performing a demodulation process for generating replica signals, feeding back the replica signals to a correlation circuit for another demodulation process, and repeating the same signal process, the interference cancellation stage process is carried out. Such a configuration enables reduction of hardware.

A printed wiring board, comprising a signal plane having a baseband block for processing a baseband signal and a high-frequency block for processing a high-frequency signal which is obtained by converting the baseband signal, and a ground plane opposing to the signal plane. The baseband block and the high-frequency block are connected through a transmission line for transmitting a signal of a specific frequency region. The ground plane is provided with a first ground portion and a second ground portion, the first ground portion being provided at an area opposing to the baseband block, the second ground portion being provided at an area opposing to the high-frequency block. The first ground portion and the second ground portion are coupled to each other through a coupling portion provided therebetween which has a low impedance with respect to the signal of the specific frequency region.

The invention relates to a compound rope of a cable rope and an optical rope, belonging to the compound rope technical field. The compound rope of the cable rope and the optical rope comprises a twisted wire core and an optical fiber core which are provided with sheathing layers at the outside, and the twisted wire core conductor is provided with a coated insulating layer. The compound rope is characterized in that a framework, the twisted wire core and the optical fiber core are arranged in the groove of the framework. The invention has the advantages that the interval is increased and steady, the mutual interference can be restrained effectively, the overhearing can be reduced, the transmission stability of data ropes can be improved, wider bandwidth can be transmitted and the mechanical tensile property is good.

The invention discloses an electro-optical modulator working point control device and method. The control device comprises a photoelectric detector, an image current source, an optical power monitor, an adjustable trans-impedance amplifier, an RF (radio frequency) detector, an AD (analog to digital) sampler, a microprocessor, a DA (digital to analog) controller and an optical modulator. The microprocessor acquires optical power monitoring signals and RF power signals in real time and calculates maximum value of optical power and minimum value of RF power so as to control optimal working points of the modulator. By the control device and method, the problems that hardware control circuits of MZ modulator offset points are complex and low in control precision and the like in the prior art, and simple circuit, good control effect and fast response are achieved.