755 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.

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.

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.

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.

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 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.

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 provides a graph self-encoding digital twin construction method for aero-engine vibration overrun fault diagnosis, and belongs to the field of aero-engine digital engineering maintenance and guarantee. The construction method is divided into three parts, namely an engine sensor network state correction diagram, a self-encoding model and a feedback decision, and comprises the following steps: acquiring an engine sensor signal, and selecting proper sample characteristics of data; performing denoising, normalization and resampling preprocessing on each piece of state data, constructing a time window, and dividing a training test set; constructing a graph self-coding digital twinborn body; and performing fault prediction by using the constructed digital twinborn body. According to the method, the vibration overrun fault of the engine can be efficiently identified, the normal working condition and the abnormal state can be accurately distinguished, and the accuracy and reliability of fault identification are remarkably improved, so that timely support is provided for preventive maintenance and operation decision of the engine, and a solid technical guarantee is provided for health management of the aero-engine.

The invention is suitable for the technical field of intelligent wearable devices and biological signal processing, and provides a heart rate monitoring method and system of an intelligent wearable device, and the method comprises the following steps: detecting the wearing state and the connection state of the device; waking up the sensor module to collect multi-modal data according to the wearing state and the connection state of the equipment; the multi-modal data comprises an ECG signal, a PPG signal and motion data; the multi-modal data is preprocessed, then the ECG signals and the PPG signals are corrected according to the motion data, motion interference is eliminated, and the corrected ECG signals and PPG signals are obtained; selecting a heart rate calculation mode according to the motion data and the corrected ECG signal and PPG signal, and performing real-time calculation to obtain heart rate data; abnormal recognition is carried out on the real-time heart rate data, and multi-level early warning response is carried out. According to the invention, the power consumption defect in the prior art can be solved, the interference of a motion scene is reduced, the health monitoring accuracy and reliability are improved, and the user experience and health management efficiency can be optimized.

A gate driver and a vehicle display are disclosed herein. The gate driver comprises a shift register module and a selection module. The shift register module includes first to fourth dummy shift register circuits and N shift register circuits. The first dummy shift register circuit is configured to output a first dummy signal. The second dummy shift register circuit is configured to output a second dummy signal. The third dummy shift register circuit is configured to output a third dummy signal. The fourth dummy shift register circuit is configured to output a fourth dummy signal. The selection module is configured to selectively output one of the first dummy signal and the third dummy signal and one of the second dummy signal and the fourth dummy signal according to the forward scan signal and the reverse scan signal.

The invention relates to the technical field of neonatal respiration monitoring, and discloses a neonatal abnormal respiration early warning system. A physiological parameter acquisition module of the system acquires physiological parameter information of a target newborn in real time, and an analysis instruction is triggered after a physiological parameter abnormal signal is obtained; the breathing mode recognition module recognizes breathing mode characteristics and analyzes the breathing mode characteristics to obtain a breathing mode evaluation result; the abnormal feature extraction module extracts abnormal breathing features and analyzes the abnormal breathing features to obtain an abnormal feature evaluation value; the early warning grade evaluation module receives the result and the evaluation value, and obtains a low-risk early warning signal and a high-risk early warning signal through evaluation; the early warning signal generation module selects an early warning type according to the received signal, and obtains parameters of sound early warning and acousto-optic early warning which should be triggered. According to the system, dynamic monitoring and graded early warning of the neonatal breathing abnormity are achieved through multi-module cooperation, and support is provided for timely intervention of the neonatal breathing abnormity.

A seed tender includes a supplying container configured to hold seed and a conveyor configured to transfer the seed to a receiving container. The seed tender includes first and second actuators configured to selectively control the movement of the conveyor. The seed tender includes a sensor system configured to detect at least one of an object in a path of movement of the conveyor, a position of the conveyor, or an orientation of the conveyor. The seed tender includes an electronic control unit configured to receive a signal from the sensor system and to selectively energize and de-energize the first and second actuators based at least in part on the signal from the sensor system. The controlled movement of the conveyor is at least partially based on at least one of the detected object, the detected position of the conveyor, or the detected orientation of the conveyor.

A rotary hammer includes a housing and a mode selection dial supported in the housing. The mode selection dial includes a cam. The housing supports a motor providing a rotational output. The housing supports a linkage moveable between a first position and a second position in response to engagement by the cam. A loss-of-control detection system measures acceleration of the housing and disables the motor upon the acceleration exceeding an acceleration threshold. The housing supports an operating mode detection system including a magnet and a Hall-effect sensor. The magnet is coupled to the linkage and moveable therewith between a third position corresponding to the first position of the linkage and a fourth position corresponding to the second position of the linkage. The Hall-effect sensor provides an output signal indictive of the position of the magnet. The loss-of-control detection system is selectively disabled based upon the output signal.

The invention relates to a driving backboard and a display device. The driving backboard comprises a plurality of pixel driving circuits, a plurality of data lines and a plurality of selection modules; the plurality of selection modules are in one-to-one correspondence with the plurality of data lines, the output ends of the selection modules are connected with the corresponding data lines, the first input ends of the selection modules receive first data signals, the second input ends of the selection modules receive second data signals, and the control ends of the selection modules are used for receiving control signals; the control signal is a first level signal, the selection module outputs a first data signal, the first data signal is used for driving a sub-pixel array in a first row mode, and sub-pixels with different colors are alternately arranged in a first arrangement mode; the control signal is a second level signal, the selection module outputs a second data signal, the second data signal is used for driving a sub-pixel array in a second arrangement mode, and sub-pixels with different colors are arranged in different regions in the second arrangement mode; and the method can be matched with various different silicon-based Micro LED full-color technologies.

A delay control circuit generates output timing signals that cause pixel drive signals to be output at timings after elapse of different delay times. The delay control circuit includes: first to sth delay timing signal generation circuits, generating first to kth delay timing signals that bring about output timings increasing in delay time; a control signal generation circuit, supplying a start pulse signal that initiates generation of the first to kth delay timing signals to the first to sth delay timing signal generation circuits; and a delay signal selection circuit, for each output channel with respect to first to sth delay timing signal groups each including the first to kth delay timing signals, selecting from among s delay timing signals the delay timing signal that brings about an earliest output timing, and setting the delay timing signals as the first to kth output timing signals.

A buck, boost or inverted topology converter includes high-side and low-side power stages with a coil coupled therebetween at a current supply node. A zero-crossing detection (ZCD) circuit includes a comparator that generates a detection signal when coil current has a zero crossing event. Threshold tuning circuitry selectively varies a threshold of the comparator in a first direction or in a second direction, based on a feedback signal provided by voltage detection circuitry coupled to a voltage detection node at the coil. The presence or absence of a voltage transition at the voltage detection node is indicative of the detection signal being issued in advance of or with delay with respect to a zero-crossing event of the coil current.

The invention discloses a digital signal controlled phase interpolator, which comprises a digital control module, a phase rotator, a mirror image phase rotator and a clock selection module, and is characterized in that the digital control module receives a phase discrimination result from a phase discriminator and obtains a control signal, and the phase discrimination result comprises a high-level Early signal and a low-level Late signal; the phase rotator receives the four-phase orthogonal clock signal and generates a first clock signal with a fixed phase according to the control signal, and the mirror image phase rotator receives the four-phase orthogonal clock signal and generates a second clock signal with a fixed phase according to the control signal; the clock selection module selectively outputs the first clock signal or the second clock signal. The digital control module is adopted to control the phase interpolator, the octagonal phase rotator is adopted to realize high linearity of phase interpolation, and the mirror image phase rotator is adopted to effectively eliminate clock jitter generated during conversion of a phase interpolation quadrant.

To increase the frame rate and reduce power consumption with a wide dynamic range for photoelectric conversion. An imaging device includes: a first photoelectric conversion unit; a first read-out circuit that outputs to a first signal line a first pixel signal corresponding to charges photoelectrically converted by the first photoelectric conversion unit; a second photoelectric conversion unit that has a smaller light-receiving area than the first photoelectric conversion unit; a second read-out circuit that outputs to a second signal line a second pixel signal corresponding to charges photoelectrically converted by the second photoelectric conversion unit; a pixel signal selector that selects the first pixel signal or the second pixel signal based on a result of comparing the second pixel signal with a reference signal; and an analog-to-digital converter that converts the pixel signal selected by the pixel signal selector into a digital pixel signal by comparing the pixel signal with a reference signal whose potential level changes over time.

The invention provides a channel reconfigurable SAR echo simulator and method, and relates to the technical field of spaceborne SAR and airborne SAR echo simulation testing, the simulator comprises a radio frequency down-conversion part, an ADC acquisition channel, a signal selection module, a baseband echo modulation channel, a signal convergence module, a DAC playing channel, a radio frequency up-conversion part and a parameter resolving part, the signal selection module and the signal convergence module can carry out transmission connection topology flexible configuration, so that a baseband echo modulation channel carries out echo generation of a corresponding mode according to the multi-channel requirement of SAR echo simulation, and the requirements of three modes are realized through a set of hardware, fixed computing resources and software configuration. Therefore, the technical problem that the echo simulation channel of the existing SAR echo simulator is relatively independent and can only meet the single application requirement can be solved.