Abstract: The disclosure provides a display panel and a manufacturing method thereof, and a display device. The display panel and the display device include a substrate, a driving layer disposed on one side of the substrate, and a light emitting element and a blocking wall disposed on the side of the driving layer away from the substrate. The blocking wall is at least located between adjacent light emitting elements along a direction parallel to a plane where the substrate is located. The display panel also includes a first reflecting layer and a second reflecting layer, where the first reflecting layer is located on a side of an epitaxial layer of the light emitting element facing the driving layer, and the second reflecting layer is located on a sidewall of the blocking wall facing the light emitting element, and/or on a sidewall of the light emitting element.

Abstract: This application discloses a high-precision multi-phase CFR system and method and use. This application relates to the technical field of PAPR reduction. The CFR system is a single-stage multi-phase structure, which is used for an input signal to perform peak searching and phase recording at a high rate, and to perform peak screening, peak allocation and peak cancellation at a single rate; in the cancellation signal generation, the peak noise after the peak screening is pulse shaped and compensated for the recorded phases at the high rate by multi-phase CPG coefficients; and according to the peak allocation, multiple CPG pulse signals are combined to obtain a final cancellation signal; then a delayed original signal and the final cancellation signal are subtracted to obtain a low-PAPR signal for output.

Abstract: A wireless communication method, apparatus, and system, and device and storage medium are provided. The method comprises sending downlink data signal on the basis of calibration beam by means of signal access point, and sending resource unit allocation information to multi-stream converter by means of the signal access point, the calibration beam being calibrated beam between the signal access point and the multi-stream converter; demodulating the downlink data signal on the basis of the resource unit allocation information by means of the multi-stream converter to obtain signal data pointing to each access device; and on the basis of the signal data pointing to each access device and beam direction weight corresponding to each access device, sending, by means of the multi-stream converter, multi-stream signals pointing to a plurality of access devices, the beam direction weight being determined based on calibrated beam direction between the multi-stream converter and each access device.

Abstract: A method and an apparatus for generating simulation scenario data, to improve diversity of simulation scenario data, are described. The method includes obtaining road test data collected when an autonomous driving vehicle carries out a traveling test on a real road. The method also includes obtaining generalized road test data, and converting obstacle behavior in the generalized road test data into interactive behavior, to obtain simulation scenario data.

Abstract: Bias circuits for CMOS power amplifiers are provided. The bias circuit includes a feedback module, a first bias module, and a second bias module. The feedback module has a first input connected to a output common mode voltage, a second input connected to a reference voltage, and an output connected to gates of main amplification transistors in a first differential amplification module; based on a difference between the output common mode voltage and the reference voltage, the feedback module adjusts gate voltages of main amplification transistors until the output common mode voltage is equal to the reference voltage; the first bias module provides bias voltages for the first differential amplification module; the second bias module provides bias voltages for a second differential amplification module. The present disclosure adopts direct negative feedback and cascoded current mirrors, which realize accurate DC gate bias and accurate control of the output common mode voltage.

Abstract: The present invention provides a wireless communication method, apparatus, and system, and a device and a storage medium.

Abstract: Provided display panel includes a first substrate and a light-emitting element array. The first substrate includes a supporting substrate, a light-shielding layer disposed on the supporting substrate and provided with multiple light-shielding openings, and a eutectic layer disposed on the supporting substrate and provided with multiple eutectic material blocks corresponding to the multiple light-shielding openings respectively. In the direction perpendicular to the first substrate, a eutectic material block overlaps a corresponding light-shielding opening. The light-emitting element array includes multiple light-emitting elements, and is electrically connected to the first substrate.

Abstract: This application discloses a high-precision multi-phase CFR system and method and use. This application relates to the technical field of PAPR reduction. The CFR system is a single-stage multi-phase structure, which is used for an input signal to perform peak searching and phase recording at a high rate, and to perform peak screening, peak allocation and peak cancellation at a single rate; in the cancellation signal generation, the peak noise after the peak screening is pulse shaped and compensated for the recorded phases at the high rate by multi-phase CPG coefficients; and according to the peak allocation, multiple CPG pulse signals are combined to obtain a final cancellation signal; then a delayed original signal and the final cancellation signal are subtracted to obtain a low-PAPR signal for output.

Abstract: This application discloses an IQ imbalance compensation method for WiFi broadband transmitting and receiving paths and application thereof. This application relates to the field of digital signal processing. The method comprises: inputting IQ signals into a frequency-related IQ imbalance compensation device FD-IQMC; the FD-IQMC device first performing frequency-independent overall compensation on IQ imbalance by means of a frequency-independent IQ imbalance compensation module FI-iqmc, and then selecting one signal from the IQ signals and inputting same into a Frac-delay filter and an Amp-FIR filter so as to respectively perform phase and amplitude compensation of frequency-selectivity; and inputting another signal into a delay module to be time-aligned with the selected signal.

Abstract: A compressor and a refrigeration device are provided. The compressor has a housing, a first cylinder, a first piston, a second cylinder and a second piston. The housing has a first air outlet port and a second air outlet port. The first cylinder has an accommodating cavity, and the first piston is eccentrically disposed in the first accommodating cavity. The second cylinder has a second accommodating cavity, and the second piston is eccentrically disposed in the second accommodating cavity.

Abstract: Provided are a light-emitting diode module, a preparation method therefor, a transfer method for a light-emitting element, a display panel, and a display device. The light-emitting diode module includes a first substrate, a sacrificial protective layer, and multiple light-emitting elements. The first substrate has multiple first regions arranged at intervals and second regions, where a second region is located between adjacent first regions. The sacrificial protective layer is located on a side of the first substrate and at least partially located in the second region. The multiple light-emitting elements are disposed in the multiple first regions and located on the same side of the first substrate as the sacrificial protective layer.

Abstract: Embodiments of this application disclose a calibration method, apparatus, and system, and relate to the calibration field, to improve calibration efficiency of a new energy vehicle and an intelligent vehicle, and reduce calibration costs. A specific solution is as follows: First, an observation signal of a to-be-tested system is obtained. Next, a corresponding performance index is calculated based on the observation signal of the to-be-tested system. Then, an updated calibration parameter is obtained by using an optimization algorithm based on the performance index, a constraint condition, and at least one objective function, where the objective function indicates a function relationship between performance indexes. Finally, the updated calibration parameter is sent to a controller.

Abstract: Bias circuits for CMOS power amplifiers are provided. The bias circuit includes a feedback module, a first bias module, and a second bias module. The feedback module has a first input connected to a output common mode voltage, a second input connected to a reference voltage, and an output connected to gates of main amplification transistors in a first differential amplification module; based on a difference between the output common mode voltage and the reference voltage, the feedback module adjusts gate voltages of main amplification transistors until the output common mode voltage is equal to the reference voltage; the first bias module provides bias voltages for the first differential amplification module; the second bias module provides bias voltages for a second differential amplification module. The present disclosure adopts direct negative feedback and cascoded current mirrors, which realize accurate DC gate bias and accurate control of the output common mode voltage.

Abstract: An amplification circuit for RF power amplifiers is provided. The circuit includes two PMOS amplification modules and two NMOS amplification modules; each module includes a CSCG structure composed of a stack of K transistors. The first PMOS module and the first NMOS module are connected in series between a supply voltage and ground; gates of main amplification transistors of the first PMOS module and the first NMOS module are connected to a non-inverting input, and outputs of the first PMOS module and the first NMOS module are connected together to form an inverting output. The second PMOS module and the second NMOS module are similarly connected. Both the first and the second modules will be connected side-by-side as a pseudo differential structure to provide double push-pull function to the load. The present disclosure simultaneously achieves high power efficiency, and high linearity.

Abstract: This application provides a parameter calibration method and apparatus that may be applied to vehicles such as an intelligent vehicle, a new energy vehicle, a connected vehicle, and an intelligent driving vehicle. The method includes: obtaining evaluation results of parameter combinations of a plurality of devices, where the evaluation results of the parameter combinations of the plurality of devices are obtained by respectively performing calibration tests by the plurality of devices in a first time period based on the parameter combinations of the plurality of devices; and obtaining at least one adjusted parameter combination based on the evaluation results of the parameter combinations of the plurality of devices.

Abstract: A chronic pain Internet plus management platform is provided to perform file management for patients with chronic diseases by taking multi-dimension and multi-level information about patients as a starting point for chronic disease diagnosis, taking respective hospitals and home personal mobile devices as an information collecting media and integrating with an Internet chronic disease cloud database, thereby realizing AI-assisted screening, and intelligent analysis and prediction of health risks. Anew mode for chronic pain management is established by the new generation of information technology, such as mobile Internet, cloud computing and big data; meanwhile, self-management of the patient is assisted by the mode for chronic pain management to improve prognosis of chronic pain.

Abstract: Bias circuits for CMOS power amplifiers are provided. The bias circuit includes a feedback module, a first bias module, and a second bias module. The feedback module has a first input connected to a output common mode voltage, a second input connected to a reference voltage, and an output connected to gates of main amplification transistors in a first differential amplification module; based on a difference between the output common mode voltage and the reference voltage, the feedback module adjusts gate voltages of main amplification transistors until the output common mode voltage is equal to the reference voltage; the first bias module provides bias voltages for the first differential amplification module; the second bias module provides bias voltages for a second differential amplification module. The present disclosure adopts direct negative feedback and cascoded current mirrors, which realize accurate DC gate bias and accurate control of the output common mode voltage.

Abstract: An amplification circuit for RF power amplifiers is provided. The circuit includes two PMOS amplification modules and two NMOS amplification modules; each module includes a CSCG structure composed of a stack of K transistors. The first PMOS module and the first NMOS module are connected in series between a supply voltage and ground; gates of main amplification transistors of the first PMOS module and the first NMOS module are connected to a non-inverting input, and outputs of the first PMOS module and the first NMOS module are connected together to form an inverting output. The second PMOS module and the second NMOS module are similarly connected. Both the first and the second modules will be connected side-by-side as a pseudo differential structure to provide double push-pull function to the load. The present disclosure simultaneously achieves high power efficiency, and high linearity.

Abstract: This application provides a method for determining an automatic parking strategy. The method includes: determining, a target parking action corresponding to a current parking stage performing the target parking action; obtaining feedback information, where the feedback information is used to indicate whether a result of performing the target parking action reaches a predetermined objective, and the predetermined objective is a predetermined position of the vehicle relative to a target parking spot, and/or the predetermined objective is a status of the vehicle in the parking process; and updating the automatic parking strategy based on the feedback information. In the foregoing method, the entire parking process is divided into several parking stages, and a control strategy is obtained by using a different method at each stage. This can increase a success rate of automatic parking in a complex parking scenario.

Abstract: A display panel, a manufacturing method thereof and a display device are provided. The method includes: forming a display panel including light emitting elements, the plurality of light emitting elements includes first color light emitting elements and second color light emitting elements. The method includes at least one of: transferring the first color light emitting elements and the second color light emitting elements by different transfer methods, growing the first color light emitting elements and the second color light emitting elements by different growth substrate patterns, or making the first color light emitting elements and the second color light emitting elements with different surface microstructures facing a light emitting surface of the display panel.