957 results about "Signal selection" patented technology

Apparatus and methods for reconfigurable power amplifiers are disclosed. In certain embodiments, a mobile device includes a transceiver configured to generate a first radio frequency signal of a first frequency band and a second radio frequency signal of a second frequency band, and a front-end system including a push-pull power amplifier configured to selectively amplify one of the first radio frequency signal or the second radio frequency signal based on a band control signal. The push-pull power amplifier includes an input balun, an output balun, and a pair of amplifiers coupled between the input balun and the output balun. The band control signal is operable to control an output capacitance of the pair of amplifiers.

An apparatus for correcting an error of a clock signal may include a phase adjuster that corrects an error of half-rate clock signals based on an error correction signal to output an error-corrected clock signal, a phase splitter that outputs quadrature clock signals from the error-corrected clock signal, an error detector that outputs an internal clock signal based on one of the quadrature clock signals, selects two quadrature clock signals among the quadrature clock signals based on a clock selection signal, and detects errors of the two quadrature clock signals based on an error check signal to output a correction request signal, and a controller that outputs a mode selection signal and the clock selection signal based on the internal clock signal and that outputs the error correction signal and the error check signal based on the mode selection signal, the clock selection signal, and the correction request signal.

A display device may include at least one processor configured to execute one or more instructions to cause the display device to: based on receiving a wireless communication connection request from an electronic device, detect a first signal strength or a second signal strength of a wireless communication signal received from the electronic device, the first signal strength being higher than the second signal strength; based on the wireless communication signal having the first signal strength: select a first connection mode with a first waiting time to automatically connect to the electronic device; and control a display to display the first waiting time. The at least one processor is further configured to: based on the wireless communication signal having the second signal strength: select a second connection mode with a second waiting time to automatically connect to the electronic device; and control the display to display the second waiting time.

The invention discloses an optimal signal selection intelligent network switching management method based on a super SIM multi-network, and relates to the field of intelligent network switching management, and the main scheme is as follows: analyzing and calculating operation state data to obtain a network delay score, a downloading rate score and a network stability score in a current network environment, and carrying out comprehensive analysis to obtain an optimal signal selection score; obtaining a current network state score; judging whether to execute a network switching instruction or not by evaluating the current network state score; the coverage degree data, the network state data and the switching cost data are analyzed and calculated to respectively obtain coverage matching degree indexes, network state indexes and switching cost-benefit ratios of different operators; switching priority indexes of different operators are obtained through comprehensive analysis, the switching priority is determined, and the problem that switching decisions and requirements are disjointed due to the fact that switching is triggered only based on signal strength or a single rate threshold and core indexes such as network delay and stability which affect user experience are not fused is solved.

The invention provides a magnetotelluric data denoising method and device based on a depth fusion model, is applied to a magnetotelluric data denoising system, and relates to the technical field of magnetotelluric data processing. A deep fusion model with a'noise feature recognition-signal selective reconstruction 'framework is established, input signals are pre-classified through a front noise detection module, the problem of false attenuation of effective signals in traditional end-to-end denoising is effectively avoided, a denoising auto-encoder containing a residual structure is utilized, and the denoising accuracy is improved. The deep feature extraction capability of the residual structure and the signal reconstruction advantage of the denoising auto-encoder are combined, the fidelity and integrity of the reconstructed signal are remarkably improved, the denoising process does not depend on manual intervention, and the efficiency and accuracy of data processing are greatly improved.

A system and method for an electrostatic discharge (ESD) clamp circuit containing a disable circuit to selectively disable a discharge circuit is disclosed. An electrostatic discharge (ESD) clamp circuit including a discharge circuit to discharge a current flow during a transient ESD voltage event; a disable input to receive a disable input signal; and a disable circuit to, based upon the disable input signal, selectively disable the discharge circuit. When the disable input signal is a first logic state, the disable circuit is to allow the discharge circuit to be enabled; and when the disable input signal is in a second logic state, the disable circuit is to disable the discharge circuit.

The invention discloses a chip internal signal observation circuit and system, and the observation circuit comprises a signal selection module which is connected with a plurality of to-be-tested modules disposed in a target chip, and is used for selecting signals of to-be-observed modules in the plurality of to-be-tested modules, and synthesizing and outputting the signals; the sampling module is connected with the signal selection module and is used for sampling the signal synthesized and output by the signal selection module and writing the signal into an FIFO cache module; the FIFO cache module is used for caching the signals sampled by the sampling module; and the main equipment module is connected with the FIFO cache module, is connected with each memory through a bus, and is used for reading the sampled signals from the FIFO cache module and writing the sampled signals into the corresponding memories for signal observation.

The present disclosure discloses a gate drive circuit and a display panel. The gate drive circuit includes a plurality of shift registers. Each shift register includes a level transmission signal selection module, a pull-up control module, a pulse quantity reduction module, a first inverting module, a first output module, a second output module, and a voltage boosting module. By connecting the voltage boosting module between a second electrode of a second transistor and a low potential line in series, when a first transistor is turned on, a potential of the second electrode of the second transistor can be increased, and on-state current of the second transistor can be reduced, so that a pulse amplitude of a second gate drive signal can be increased and stabilized.

Provided is a method for sidelink communication. The method is applicable to a second terminal device, and the method includes: receiving first information from a first terminal device, wherein the first information is used for indicating a set of resources suitable for use by the second terminal device, and / or a set of resources unsuitable for use by the second terminal device; and selecting a transmission resource for an SL positioning reference signal (PRS) based on the first information.

The invention discloses a PUF (Physical Unclonable Function) structure based on delay difference quantization, and the structure comprises a PUF circuit which comprises two time delay circuits which are connected in parallel; a plurality of layers of differential tapped circuits TDC, and decoders connected with each layer of differential tapped circuit TDC; the delay data quantization unit is connected with the multi-layer decoder, and the delay data quantization unit is connected with the LFSR confusion structure; the two delay circuits are connected with the multi-layer differential tap circuit TDC through the signal selection structure, the signal selection structure inputs delay signals which respond first and then respond in the two delay circuits into a start end and a stop end of each layer of differential tap circuit TDC, the decoder determines delay time of the two delay circuits under corresponding delay resolution, and the decoder outputs the delay time to the multi-layer differential tap circuit TDC. The delay data quantization unit is used for averaging the delay time under different time delay resolutions to serve as final delay data, and the final response R is output after the final delay data is confused by the LFSR confusion structure. Signals of the two symmetrical delay paths are respectively input into a framework of a multi-layer TDC quantization circuit, so that delay difference digital code quantization is realized.

The invention discloses a narrow pulse generation system and method of an FPGA integrated fiber laser, and belongs to the field of all-digital fiber laser control. The narrow pulse generation system comprises a multi-phase clock generation module, a dynamic delay chain module, a pulse width search module, a signal selection module, a logic operation module, a frequency control module, a self-calibration module and an LVDS driving module which are in synergistic effect. The multi-phase clock generation module is used for realizing rough delay adjustment of nanosecond stepping; the dynamic delay chain module is used for realizing fine delay adjustment of picosecond stepping; therefore, based on the FPGA integrated design, an external delay chip and a high-frequency peripheral circuit are not needed, the hardware complexity and cost are reduced, and the anti-interference capability is high; picosecond-level stepping pulse width adjustment is realized through a two-level structure of nanosecond-level coarse adjustment and picosecond-level fine adjustment, and the limitation of a traditional FPGA (Field Programmable Gate Array) integration scheme is broken through; time delay deviation caused by environment change and hardware drift is considered, temperature compensation and TDC calibration are carried out, and the stability of pulse width is ensured.

The invention belongs to the technical field of automation control, and relates to a transformer substation multi-source heterogeneous data monitoring method and system based on Internet of Things edge computing, and the method comprises the steps: building a mapping relation between an equipment identity label and a corresponding data format; generating a fusion data packet; generating an equipment state threshold interval; triggering a local execution unit to act when the deviation amplitude exceeds a first critical value, and generating a signal to be rechecked when the deviation amplitude is lower than the first critical value but exceeds a second critical value; matching a preset processing scheme according to the equipment physical position code and the electrical connection topological relation, and generating a control instruction set; performing time-space correlation analysis on the to-be-rechecked signal and the local action event, and when the to-be-rechecked signal and the local action event occur in the same electrical loop within a preset time range, improving the event priority and generating an enhanced alarm signal; and selecting one of the complete data packet, the compressed feature data and the alarm code to perform cloud communication. The method solves the problem that in a traditional mode, an isolated analysis mode of abnormal events and equipment actions is difficult to recognize hidden fault association.

The invention discloses a suspension control fault detection and recovery method and device for a maglev train and a medium, and relates to the field of maglev trains, and the method comprises the following steps: S1, constructing a linearized suspension system model; s2, reconstructing a state vector, and generating a suspension gap estimation value; s3, constructing a health probe set, and executing a signal selection strategy; s4, detecting a slow change fault based on the statistical accumulation characteristic of the residual error, and outputting a slow change fault detection result; s5, monitoring the variation trend of the residual error, and triggering a reset mechanism to clear historical accumulated data when a reset condition is met; and S6, generating a final fault mark, and forcibly updating the fault mark to a normal state if a reset mechanism is triggered. According to the hierarchical collaborative decision-making architecture based on the maglev train lap joint structure dynamic model, the condition of performance degradation or failure does not occur in a real system by the algorithm, so that the engineering applicability and reliability of fault diagnosis are improved.

The invention relates to the technical field of dew point measurement, in particular to an intelligent temperature control system and method based on a high-precision chilled mirror dew point meter, and the system comprises a chilled mirror temperature difference positioning module, a main signal selection module, a power response matching module, an interference airflow recognition module, and a current output instruction generation module. A cold mirror end temperature difference is obtained, a section and a lifting direction are judged, synchronous measuring points are screened, a minimum deviation signal is extracted, a power section is matched, a power-on instruction is constructed, a rheumatism disturbance level is identified, parameters are spliced to generate a conduction structure, and a cold mirror temperature control instruction is output. According to the method, section identifiers are constructed through temperature differences and temperature change directions, signals are screened based on time alignment, interference is avoided, power control positions section deviation directions through difference values, disturbance identification is combined with wind speed and humidity differences, disturbance levels are refined, power-on control generates time sequence instructions through multi-parameter splicing, instruction stability and control accuracy are improved, and the method is suitable for large-scale popularization and application. And dynamic closing logic is formed.

Various techniques are provided to implement look-up table (LUT) circuits. In one example, a LUT circuit includes a first LUT configured to selectively receive a first input signal and each input signal of a set of input signals and determine a first output signal based on the first input signal and / or an input signal(s) of the set. The LUT circuit also includes a second LUT configured to selectively receive a second input signal and each input signal of the set and determine a second output signal based on the second input signal and / or an input signal(s) of the set. The LUT circuit also includes a multiplexer configured to selectively receive the first and second output signals and a third input signal, and selectively provide, based on the third input signal, the first or second output signal as an output of the LUT circuit. Related systems and methods are also provided.

The invention provides a memory and a control method thereof, and an electronic device, in a first chip of the memory, each local bit line is coupled to a common bit line on one side through a respective bit line selector, and each local bit line is coupled to a common bit line on the other side through a respective pre-charge switch; a bit line selector configured to receive and selectively turn on the connected local bit line and the connected common bit line based on the sub word line driving signal; and a pre-charge switch configured to receive and selectively switch on the connected local bit line and the connected common bit line based on the sub word line driving complementary signal.

The invention belongs to the field of medical rehabilitation equipment and robot control, and particularly relates to a self-adaptive control system and method applied to a walking assisting robot, and the system comprises a sensor information collection module which is used for collecting sensor information at each position of the walking assisting robot in real time, the intention identification and environment identification module and the self-adaptive control module are used for identifying the environment; the intention recognition and environment recognition module is used for recognizing and analyzing a user walking intention including the walking direction and speed, selecting different walking modes according to feedback signals and sending the different walking modes to the self-adaptive control module; meanwhile, ground gradient changes when the user assists in walking are recognized, different assistance or resistance modes are selected according to feedback signals, and the modes are sent to the self-adaptive control module; and the adaptive control module dynamically adjusts the magnitude and the direction of the speed command of the motion control module, and dynamically adjusts according to modes for providing different assistance or resistance.

Apparatus and methods for reconfigurable power amplifiers are disclosed. In certain embodiments, a mobile device includes a transceiver configured to generate a first radio frequency signal of a first frequency band and a second radio frequency signal of a second frequency band, and a front-end system including a push-pull power amplifier configured to selectively amplify one of the first radio frequency signal or the second radio frequency signal based on a band control signal. The push-pull power amplifier includes an input balun, an output balun, and a pair of amplifiers coupled between the input balun and the output balun. The band control signal is operable to control an input capacitance of the pair of amplifiers.

A user equipment (UE) reports beam management information to a network. The UE receives a first group of multiple reference signals from a first transmission reception point (TRP) of a network, receives a second group of multiple reference signals from a second different TRP of the network, selects a first beam associated with one of the multiple reference signals of the first group, selects a second beam associated with one of the multiple reference signals of the second group and transmits a message to the network, the message including an indication of the selected first beam and second beam.

The invention belongs to the technical field of underwater acoustic equipment design and manufacturing, and particularly relates to a passive sonar target tracking performance estimation method. Comprising the following steps: generating a passive sonar moving target; firstly, signal simulation parameters are read, motion equation resolving is carried out, then array structure parameters are read, time delay is calculated, and simulation signals are generated; forming a beam; constructing an array flow pattern through the array structure parameters read in the step 1, and then selecting a beam forming algorithm according to the array flow pattern and a simulation signal to generate beam domain data; target tracking; a threshold value is set, a temporary track is established according to the beam domain data generated in the second step, then a target tracking algorithm is selected, and a tracking target is determined; estimating target tracking performance; and tracking the target trajectory, and evaluating the target tracking precision and the target tracking accuracy. According to the method, the target tracking precision and the target tracking accuracy can be estimated, so that the design efficiency is improved, and reliable data support is provided for sonar design.

The invention discloses a programmable hyperspectral laser radar device and a real-time registration method thereof.The programmable hyperspectral laser radar device comprises an optical module and a real-time signal processing module, the real-time signal processing module carries out real-time processing on received laser echo signals, and selects a windowing position and a spectral wavelength width based on converted non-laser echo signals; acquiring a plurality of arbitrary programmable spectrum channels, and reconstructing the acquired image information of the plurality of spectrum channels through a spectrum separation method to obtain different spectrum images corresponding to the target scanning area; and the data integration module is used for real-time registration of the laser point cloud and the hyperspectral image and assigning the three-dimensional coordinate information and the spectral information needing to be reserved to the laser point cloud. According to the technical scheme, a user is supported to define the windowing position and the spectral wavelength width, only the specific wave band is extracted, full-wave band data redundancy is avoided, the processing efficiency can be improved, meanwhile, key spectral features are reserved, and the method is suitable for specific scenes.

The invention discloses a communication signal interference optimization system and method based on machine learning, and the system comprises a channel data collection module which collects channel data in a communication environment, builds a channel data group, and transmits the channel data group to a data processing and feature extraction module; the data processing and feature extraction module is used for receiving the channel data set in real time and carrying out preprocessing and multi-feature engineering processing on the channel data set to obtain a channel feature set and a signal quality data set; the machine learning model module is used for constructing a multi-level model and training the constructed multi-level model; the self-adaptive channel selection optimization module is used for performing interference prediction analysis by using the training data transmitted by the machine learning model module and triggering a multi-channel switching mechanism; and the iterative optimization module is used for acquiring interference data in real time through the signal interference detection equipment group after the initial signal selection, evaluating and optimizing the current channel signal quality, and generating an iterative mechanism.

The invention discloses a gate drive circuit and a display panel, the gate drive circuit comprises a plurality of cascaded shift registers, the Nth shift register comprises a cascade transmission signal selection module, a pull-up control module, a first filtering module, a second filtering module and a first output module, the first filtering module is used for filtering out the front part of the second pulse appearing later in the frame of the second node, the second filtering module is used for filtering out the rear part of the first pulse appearing first in the frame of the second node and the rear part of the second pulse appearing later, and the front part with the fixed width in the first pulse can be reserved. And then, the first output module is controlled to output the gate driving signal with the pulse with the fixed width at the corresponding time, so that after the improvement, the driving requirement of the rear end can be met.

A design method for simulating the crankshaft position signal of a motorcycle engine based on six pairs of motor poles comprises: a first step of setting a Hall sensor: one pair of the six pairs of motor poles is extended along the axial direction of the crankshaft to form a pair of special-shaped poles, corresponding to the six pairs of N and S poles, three phase Hall sensors are arranged at adjacent intervals around the motor stator, and corresponding to the pair of special-shaped poles, a special-pole Hall sensor is arranged around the motor stator adjacent to one of the phase Hall sensors, and both the phase Hall sensor and the special-pole Hall sensor are bipolar latch Hall sensors; a second step of selecting a Hall signal: the three phase Hall sensors output three phase Hall signals respectively, and the special-pole Hall sensor outputs a position Hall signal; a third step of processing the Hall signal: the three phase Hall signals and the position Hall signal are used to obtain a corresponding logic circuit or software program through a logic expression to generate a simulated crankshaft position signal with a gap.

The invention relates to the field of tire type walking equipment, and discloses a load-sensitive hydraulic brake valve and a load-sensitive hydraulic system thereof, and the load-sensitive hydraulic system comprises the load-sensitive hydraulic brake valve, a load-sensitive pump, a priority valve, a steering hydraulic system, a working hydraulic system, a shuttle valve and corresponding connecting pipelines; a P port, an A port, a B port, a T port, an LS1 port, an LS port, a low-pressure alarm pressure switch and a brake lamp pressure switch are arranged outside the load-sensitive hydraulic brake valve. According to the system, full-hydraulic dynamic braking can be achieved on equipment without a prefill valve, the equipment efficiency is improved, the installation cost is reduced, the energy consumption is reduced, and the service life is prolonged. Wherein the load-sensitive hydraulic brake valve integrates a brake function, a pressure maintaining function, a high-low pressure switching function, a pressure signal selection function and a pressure alarm function; the invention has the advantages of fast braking response, low noise, low failure rate, high safety coefficient, compact structure, low cost, low energy consumption and long service life.

A refrigerator appliance is provided, including a dispenser assembly positioned at a door at a cabinet. The dispenser assembly includes a recess extending into the door. The dispenser assembly is configured to egress a fluid, ice, or both, toward the recess. A scanner assembly includes a scanner device and a targeting device. The scanner assembly is positioned at a casing disposing the scanner device and the targeting device at an angle toward the recess. The scanner assembly is positioned at the angle toward the recess and behind the external wall. A sound emitting device is positioned outside of the casing at which the scanner assembly is positioned. The sound emitting device is configured to selectively emit sounds based on a command signal from the scanner assembly. The sound emitting device is communicatively coupled to the scanner assembly.

The invention discloses an anti-collision safety control system using ultrasonic ranging, which is applied to an aerial work platform, the aerial work platform is provided with a first controller and a second controller, and the first controller and the second controller are in communication connection; the second controller drives the assembly to work according to the motion control instruction of the first controller so as to drive the aerial work platform to move; the safety control system comprises an ultrasonic ranging module used for detecting the distance between the aerial work platform and an obstacle to obtain a distance detection result. The third controller is in communication connection between the first controller and the second controller, and the third controller is used for generating a control signal according to the distance detection result and selectively transmitting the motion control instruction output by the first controller in an unvarnished mode or enabling the second controller to drive the aerial work platform to stop moving. Collision accidents can be conveniently and efficiently avoided.

The invention relates to a phase detection simulation circuit, method and device, and the circuit comprises a random signal generation module which is used for generating a random signal; the signal selection module is used for receiving the first simulation delay signal, the second simulation delay signal and the random signal, and selecting the second simulation delay signal or the random signal as a selection output signal according to a comparison result of a phase difference between the first simulation delay signal and the second simulation delay signal and a preset threshold range; the sampling simulation register is used for outputting a sampling simulation result signal according to the first simulation delay signal and the selection output signal; wherein the preset threshold range is used for representing the establishment retention time of the sampling register simulated by the sampling simulation register. According to the invention, the simulation of the sampling register under the metastable state is realized, the integrity and reliability of the simulation result are improved, and the reliability of the simulation phase detection circuit on the prediction result of whether the simulation phase detection circuit meets the requirement of the design target is improved.

The invention discloses an FPGA prototype verification platform based on a vehicle gauge level millimeter wave radar SOC chip, and belongs to the technical field of chip verification. Comprising a data selection unit, a data generation unit, a data storage unit, a data transmission unit, a data processing unit, an analysis and verification unit and a result display unit. A signal selector is used for selecting different data, a dial switch is dialed to 0 to select data actually collected by a radio frequency front end and dialed to 1 to select test data in an HBM, and a verification platform is built by integrating a radio frequency front end analog chip, an ADC chip and an FPGA minimum system to verify the overall function of the millimeter wave radar SOC chip. The verification platform built by using a plurality of discrete devices can restore the function of a real millimeter wave radar SOC chip as much as possible, the risk of tape-out failure is greatly reduced, the HBM high-bandwidth memory integrated in the FPGA can replace plug-in DDR particles, and a higher transmission rate can be obtained, so that the development cost and power consumption of the verification platform can be reduced.

The utility model discloses a conference machine and office equipment, relates to the technical field of display, and can increase operation modes of the conference machine so as to expand application scenes of the conference machine. The conference machine comprises a display; a display driving board; the system board is provided with an output signal external port; the first multi-path signal selection board is provided with an input signal external port, and the first multi-path signal selection board is electrically connected with the input end of the system board and the input end of the display driving board; and the second multi-path signal selection board is electrically connected with the output ends of the system board, the display and the display driving board respectively.