Beijing Xiaomi Mobile Software Co., Ltd.

Xiaomi Inc.

Huawei Technologies Co., Limited

Beijing Baidu Netcom Science and Technology Co., Ltd.

Google Inc.

Boe Technology Group Co., Ltd.

Lenovo (Beijing) Limited

Baidu Online Network Technology (Beijing) Co., Ltd.

Beijing Dajia Internet Information Technology Co., Ltd.

Beijing Lenovo Software Ltd.

Beijing University of Technology

Petrochina Company Limited

Beijing Eswin Computing Technology Co., Ltd.

Beijing Boe Health Technology Co., Ltd.

State Grid Corporation of China

Yuan Gao

Lei Zhang

Ningning Li

Bin Wang

Gaocai Han

Zhe Wang

Shuai Liu

Jiahao Xu

Tianshu Qu

Tao Wang

Xuxu Li

Xiaoye Xie

Zheng Xing

Jing Jiang

Zhaopeng Cheng

Duo Xu

Dai Dai

Xiaohui Pi

Xiaogang Jiao

Hao Sun

Feng Zhang

Qian Zhang

Peng Li

Eyal Shlomot

Shuo Zhang

Hui Shen

Xiao Xi Liu

Li Tian

Chen Zhao

Errui Ding

Ke Zhao Li

Shilei Wen

Lin Zhang

Yang Sun

Yong Xu

Junfeng Liu

Wei Han

Fei Gao

Xinyan Xiao

Lin Cheng

Faen Zhang

Dongliang He

Xubin Li

Wei Xie

Miao Yu

Yanhui Li

Qiaoqiao She

Amit Behal

Keith Patrick Golden

Yang Han

Xiao Feng

Fenghui Wu

Jun Lei

Qianying Wang

Wen Zheng

Lidong Zhao

Shaoxiong Yang

Fen Tang

Hai Zhao

Fei Wu

Lifang Wu

Daren Li

Meng Jian

Ying Qian

Feng Qi

Yang Peng

Sujiang Rong

Jiance Ding

Zhou Wang

Xiaohua Guo

Ziming Zhang

Congli Song

Hongtu Cui

Guilong Yang

Ben Hutchinson

Wenjing Li

Shibo Li

Wenbai Zheng

Yisong Gao

Huijuan Huang

Ji Xiang

Dehua Huang

Zhu Liu

Tongbo Wang

Shilong Li

Changling Wang

Yuanzheng Shi

Chunxia Che

Yulong Liang

Galian Gou

Xilin Jing

Xiaoxin Chang

Qiang Gui

Lifen Gu

Zhongdong Zhang

Duping Tan

Xinhua Sun

Jianyu Wang

Alexander Oliver Marks

Chang Hai Zheng

Disclosed are an analog quantity acquisition method and apparatus. An acquisition circuit with a zero flux current transformer is first used to acquire a current signal, where the acquisition circuit with the zero flux current transformer includes the zero flux current transformer, a compensating winding, and a dynamic detection unit, and the compensating winding generates a reverse excitation potential to counteract an excitation current and eliminate impacts of a ratio error and a phase angle error on accuracy. A multi-segment amplification circuit is used to perform segmented amplification on different ranges of the current signal, and full-range current acquisition is achieved by using different amplification circuits. An analog-to-digital converter chip is used to convert an amplified current signal into a digital signal. The acquisition circuit with the zero flux current transformer is used to eliminate the impacts of the ratio error and the phase angle error on the measurement accuracy.

Analog quantity acquisition method and apparatus

This application provides a method and an apparatus for determining a virtual speaker set. The method for determining a virtual speaker set includes: determining a target virtual speaker from F preset virtual speakers based on a to-be-processed audio signal, where each of the F virtual speakers corresponds to S virtual speakers, F is a positive integer, and S is a positive integer greater than 1; and obtaining, from a preset virtual speaker distribution table, respective position information of S virtual speakers corresponding to the target virtual speaker, where the virtual speaker distribution table includes position information of K virtual speakers, the position information includes an elevation angle index and an azimuth angle index, K is a positive integer greater than 1, F≤K, and F×S≥K. This application can improve audio signal playback effect.

Method and apparatus for determining virtual speaker set

An audio encoding and decoding method and apparatus, and a non-transitory readable storage medium are provided. The encoding method includes: selecting a first target virtual speaker from a preset virtual speaker set based on a current scene audio signal; generating a first virtual speaker signal based on the current scene audio signal and attribute information of the first target virtual speaker; and encoding the first virtual speaker signal to obtain a bitstream. According to the encoding method, an amount of encoded data is reduced, to improve encoding efficiency.

Audio encoding and decoding method and apparatus

Audio encoding and decoding methods and apparatuses are disclosed, to reduce an amount of encoded and decoded data, so as to improve encoding and decoding efficiency. The method includes: selecting a first target virtual speaker from a preset virtual speaker set based on a first scene audio signal; generating a first virtual speaker signal based on the first scene audio signal and attribute information of the first target virtual speaker; obtaining a second scene audio signal using the attribute information of the first target virtual speaker and the first virtual speaker signal; generating a residual signal based on the first scene audio signal and the second scene audio signal; and encoding the first virtual speaker signal and the residual signal, to produce encoded signals, and writing the encoded signals into a bitstream.

A three-dimensional audio signal coding method, apparatus, and encoder are described. The method includes, after obtaining a first correlation between a current frame of a three-dimensional audio signal and a representative virtual speaker set for a previous frame, the encoder determines whether the first correlation satisfies a reuse condition, where the first correlation is used to determine whether to reuse the representative virtual speaker set for the previous frame when the current frame is encoded. The method further encodes the current frame based on the representative virtual speaker set for the previous frame when the first correlation satisfies the reuse condition, to obtain a bitstream. A virtual speaker in the representative virtual speaker set for the previous frame is a virtual speaker used for encoding the previous frame of the three-dimensional audio signal.

Three-dimensional audio signal coding method and apparatus, and encoder

An automatic gain control system and a control method, a power detector and a radio frequency receiver are provided, wherein the power detector includes: a detection circuit, having a first and second input terminals connected to respective first and second differential output terminals of the trans-impedance amplifier, and configured to sample a peak of a differential output signal of the trans-impedance amplifier along with a clock cycle and provide a differential detection signal at a first output node; a filter circuit converts energy of the differential detection signal obtained at the first output node into an output voltage, so that the power detector may be used to detect an output power of the trans-impedance amplifier and adjust, by a control logic unit, a gain or an output power of a low noise amplifier connected to a radio frequency signal.

Automatic gain control system, control method, power detector and radio frequency receiver

A health administration method, a health administration apparatus, a health administration system, and a data collection apparatus are provided. The health administration method involves a plurality of objects and a plurality of devices, and includes: generating a device usage record of at least one object based at least on identity information of the at least one object among the plurality of objects and data generated by a device used by the at least one object (S), and providing the device usage record of the at least one object to a memory associated with a health administration apparatus (S). The health administration method, the health administration apparatus, the health administration system, and the data collection apparatus can improve work efficiency of medical workers.

Health administration method, apparatus, and system, and data collection apparatus

Solar panel

Bone conduction headphone

Hand dryer

The present disclosure provides a transmitter, a transceiver and a signal transmission method thereof. The transmitter comprises a signal amplification module, a balun and a feedback current generation module; the signal amplification module is configured to receive an input signal, amplify the input signal and output a differential signal to the balun; the balun is configured to receive the differential signal and convert the differential signal into a single-ended signal; and the feedback current generation module is configured to form electromagnetic coupling with the balun to generate a feedback current signal, wherein the feedback current signal is used as an input signal to a receiver. The transceiver and the signal transmission method provided by the present disclosure generate a feedback current signal according to the differential signal output by the signal amplification module, and input the feedback current signal instead of the traditional differential voltage signal to the receiver, thereby improving the signal noise ratio of the system.

Transmitter, transceiver and signal transmission method therefor

The present disclosure provides a bit allocation method and apparatus for an audio signal. The bit allocation method for an audio signal includes: obtaining T audio signals in a current frame, where T is a positive integer; determining a first audio signal set based on the T audio signals, where the first audio signal set includes M audio signals, M is a positive integer, T≥M; determining M priorities of the M audio signals in the first audio signal set; and performing bit allocation on the M audio signals based on the M priorities of the M audio signals.

Bit allocation method and apparatus for audio signal

A stereo encoding method and apparatus, and a stereo decoding method and apparatus are disclosed. The stereo encoding method includes: performing downmix processing on a left channel signal of a current frame and a right channel signal of the current frame, to obtain a primary channel signal of the current frame and a secondary channel signal of the current frame; and when determining that a frame structure similarity value falls within a frame structure similarity interval, performing differential encoding on a pitch period of the secondary channel signal by using an estimated pitch period value of the primary channel signal, to obtain a pitch period index value of the secondary channel signal, where the pitch period index value of the secondary channel signal is used to generate a to-be-sent stereo encoded bitstream.

Stereo encoding method and apparatus, and stereo decoding method and apparatus

A suspension damping device installed at a chassis of a mobile robot comprises a vehicle frame, a controlling arm set and a damping device. The vehicle frame is fixed to the chassis and arranged on the ground. One end of the controlling arm set is hinged to the vehicle frame, and the other end of the controlling arm set is hinged to a steering device, so the controlling arm set controls the motion stability of the steering device. One end of the damping device opposite to the ground is hinged to the vehicle frame, and the other end of the damping device faced to the ground is hinged to the steering device. A six-wheeled bionic chassis which comprises a chassis frame, a controller, a sensor, front wheel suspension assemblies, middle wheel suspension assemblies and rear wheel suspension assemblies is also disclosed in the present invention.

Suspension assembly, suspension damping device and six wheels bionic chassis

The present disclosure relates to a method for resizing a window, an electronic device, and a readable storage medium. The method includes: obtaining, in response to an operation triggered for rotating a roll-up shaft being detected, a stretching rate and duration of the roll-up screen; and resizing the window of a current application displayed by the roll-up screen based on the stretching rate and duration of the roll-up screen.

Method and apparatus for resizing window, electronic device, and readable storage medium

Growing community of inventors

Beijing, China

Yuan Gao