Abstract: The application discloses a picture prediction method, an encoder, a decoder and a computer storage medium. The method includes determining a prediction mode parameter of a current block; determining a reconstructed value of a first colour component of the current block and a value of a reference colour component of the current block, in response to the prediction mode parameter indicating determining a prediction value of the current block by using an attention-based artificial neural network model (ANNM) mode; and predicting, according to the reconstructed value of the first colour component of the current block and the value of the reference colour component of the current block, a second colour component of the current block, to determine a prediction value of the second colour component of the current block.

Abstract: An encoding method includes: a first matching block of a current block is determined; motion compensation enhancement is performed on the first matching block to obtain at least one second matching block; motion information of the current block is determined according to the at least one second matching block; and the current block is encoded according to the motion information.

Abstract: A speak includes a housing, a diaphragm, a first vibrating assembly, and a second vibrating assembly. The housing has an accommodating groove. The diaphragm is relatively arranged in the accommodating groove. The diaphragm includes a first diaphragm part and a second diaphragm part. The second diaphragm part is arranged around the first diaphragm part. The first vibrating assembly is arranged on the first diaphragm part, for driving the first diaphragm part. A movable space is formed between the first diaphragm part and the bottom of the accommodating groove. The second vibrating assembly is on the peripheral side of the movable space. The first vibrating assembly vibrating through piezoelectric means.

Abstract: A system may include an electron beam source configured to generate a primary electron beam and an electron-optical column including a set of electron-optical elements configured to direct at least a portion of the primary electron beam onto a portion of a sample. The set of electron-optical elements may include an objective lens disposed along an optical axis, where the objective lens includes one or more charge control plates (CCPs), where the electron-optical column includes a detector assembly configured to concurrently collect one or more backscattered electron (BSE) signals and one or more x-ray signals emanated from the sample. The detector assembly may include one or more silicon-drift detector (SDD) sensors and one or more BSE sensors.

Abstract: This application provides a data processing method and a communication apparatus, and relates to the field of communication technologies. The method can be used for downlink data processing and uplink data processing. The communication apparatus may receive a reference signal, and obtain a first matrix based on the reference signal. The first matrix is an autocorrelation matrix whose dimension is N rows and N columns, and N indicates a quantity of channels of an antenna array. Based on the first matrix, channels in different rows of the antenna array are averaged to obtain a second matrix, where a dimension of the second matrix is N/(x×R) rows and N/(x×R) columns; R represents a quantity of channel rows of the antenna array; x represents polarization of the antenna array.

Abstract: A channel measurement method includes: receiving a plurality of reference signals in a plurality of first frequency domain units in a same time domain unit, where the plurality of reference signals may be respectively precoded by using precoding matrices corresponding to the first frequency domain units in which the plurality of reference signals are located, and precoding matrices corresponding to at least two different first frequency domain units in the plurality of first frequency domain units are different; generating a precoding matrix indicator (PMI) based on the plurality of reference signals, where the PMI indicates a plurality of codewords corresponding to a plurality of second frequency domain units, the plurality of second frequency domain units and the plurality of first frequency domain units belong to a same frequency domain resource, and the plurality of codewords may be used for determining a downlink channel; and sending the PMI.

Abstract: A heat dissipation assembly and an electric energy conversion apparatus are disclosed according to the present application. The heat dissipation assembly comprises a side cover connected to the electric energy conversion apparatus and an air outlet cover, a heat dissipation passage is formed by enclosure of the side cover and one side surface of the electric energy conversion apparatus, the side cover is provided with an air inlet in communication with the heat dissipation passage; the air outlet cover is arranged at the top of the electric energy conversion apparatus and partially connected with the side cover, and an air outlet space is formed by enclosure of the air outlet cover, the air outlet space is in communication with the heat dissipation passage, the air outlet cover is provided with an air outlet at an outer peripheral side of the air outlet cover away from the electric energy conversion apparatus.

Abstract: A decoder decodes a bitstream of a video and determines decoding parameters of a current picture in the video; determines, according to the decoding parameters of the current picture, reconstructed data of a second picture component of the current picture based on the reconstructed data of the first picture component by using a prediction model; determines decoded data based on the reconstructed data of the first picture component and the reconstructed data of the second picture component. An encoder determines identification information of a current picture in a video; codes reconstructed data of a first picture component; the encoder skips encoding of the reconstructed data of the second picture component, in response to the identification information indicating using the prediction model for determining the reconstructed data of the second picture component; and signals coded bits into a bitstream of the video.

Abstract: Embodiments of this application disclose a communication method and apparatus. Therefore, a beam gain of downlink channel transmission is improved, and a phase mismatch performance loss is small. The method in embodiments of this application includes: A network device may determine a first downlink statistical autocorrelation matrix of a downlink channel based on a first uplink statistical autocorrelation matrix of an uplink channel, indicate, based on a first weight indicated by a terminal, the terminal to receive a second weight of data, then determine a third weight different from the second weight based on the first downlink statistical autocorrelation matrix and the second weight, and send the data to the terminal based on the third weight.

Abstract: A method for aggregation regulation optimization of an electric vehicle load by considering a comprehensive response coefficient is disclosed. The method includes the following steps: Step 1, collecting electric vehicle charging information; Step 2, based on the electric vehicle charging information collected in Step 1, calculating aggregation regulation response indexes for user participation, and determining a weight of each aggregation regulation response index; Step 3, based on the calculation result of each aggregation regulation response index for user participation obtained in Step 2, calculating a comprehensive response coefficient of an electric vehicle; and Step 4, performing the aggregation regulation optimization of the electric vehicle load by using minimum load power deviation determined by a dispatching scheme and an actually considered comprehensive response coefficient as a target and using a load rate, a peak-valley difference and a load fluctuation rate after dispatching as constraints.

Abstract: The invention relates to an optimal allocation method for stored energy coordinating electric vehicles (EVs) to participate in auxiliary service market (ASM), including the following steps: 1. Predict the reported capacity of daily 96 points for EVs to participate in the ASM by least square support vector machine (LSSVM). 2. Fit the daily total load distribution of EVs. 3. Determine the error distribution between the reported capacity and the actual response capacity, and simulate the total daily load capacity of EVs in the future with Monte Carlo method. 4. Calculate the energy storage capacity required by EVs daily participating in ASM. 5. Build the objective function to minimize the scheduling risk of auxiliary service. 6. Solve the energy storage model in step 5 with particle swarm optimization (PSO), and output the configuration results of optimal energy storage capacity and energy storage power. The invention can improve the adjustable capacity of EVs participating in ASM.

Abstract: An electronic device includes at least one optically transparent substrate defining an optical transmission area and a display having an array of pixel structures each including a plurality of electroluminescent elements selectively operable to project light through the optical transmission area. An optically pellucid electrical conductor is coupled to the optically transparent substrate at a first subarea of the optical transmission area. One or more processors cause a first set of pixel structures to project light through the first subarea with a first luminous intensity and a second set of pixel structures to project other light through a second subarea of the optical transmission area that is complemental to the first subarea with a second luminous intensity that is different from the first luminous intensity.

Abstract: This application provides a data processing method and a communication apparatus, and relates to the field of communication technologies. The method can be used for downlink data processing and uplink data processing. The communication apparatus may receive a reference signal, and obtain a first matrix based on the reference signal. The first matrix is an autocorrelation matrix whose dimension is N rows and N columns, and N indicates a quantity of channels of an antenna array. Based on the first matrix, channels in different rows of the antenna array are averaged to obtain a second matrix, where a dimension of the second matrix is N/(x×R) rows and N/(x×R) columns; R represents a quantity of channel rows of the antenna array; x represents polarization of the antenna array.

Abstract: A device and method for controlling the audio level of a device are provided. The device includes a housing, a roll unit mounted such that it is able to rotate in the housing, a flexible, touch-sensitive display configured to be rolled on the roll unit around a roll axis so that a first, curved portion of the display forms a side screen bent around the roll unit, and a second, planar portion of the display forms a front screen, wherein the area of the front screen changes according to a rotation of the roll unit, and a controller configured to adjust, in response to detecting a predefined multi-touch gesture on the side screen, an audio output volume of the device.

Abstract: A battery sampling chip and a battery management system. The battery sampling chip includes a selector module, including a first multiplexer and a second multiplexer, wherein the first multiplexer and the second multiplexer are both used to collect status data of a first group of cells; an analog-to-digital conversion module, connected with the first multiplexer and the second multiplexer; and a data control module, used to send alarm information when converted status data sent by the analog-to-digital conversion module are not received within a preset duration. Through redundancy design of the multiplexers, whether the selector module fails or is abnormal can be effectively judged, thus avoiding the battery management system including the battery sampling chip from monitoring incorrect status data.

Abstract: An apparatus: obtains K downlink channel weight matrices based on K pieces of downlink channel information sent by K UEs, where the downlink channel information is fed back by the UE in response to a preset reference signal sent by the base station, the downlink channel weight matrix is an NT×rank-dimensional matrix, and rank is a quantity of signal streams received by the UE; obtains K×rank first initial phase difference matrices and K×rank second initial phase difference matrices based on the K downlink channel weight matrices and a first polarization direction and a second polarization direction of transmit channels of the base station; obtains a cell initial phase difference matrix based on the K×rank first initial phase difference matrices and the K×rank second initial phase difference matrices; and implements initial phase correction of the transmit channels based on the cell initial phase difference matrix.

Abstract: Embodiments of this application disclose a communication method and apparatus. Therefore, a beam gain of downlink channel transmission is improved, and a phase mismatch performance loss is small. The method in embodiments of this application includes: A network device may determine a first downlink statistical autocorrelation matrix of a downlink channel based on a first uplink statistical autocorrelation matrix of an uplink channel, indicate, based on a first weight indicated by a terminal, the terminal to receive a second weight of data, then determine a third weight different from the second weight based on the first downlink statistical autocorrelation matrix and the second weight, and send the data to the terminal based on the third weight.

Abstract: An encoding method includes: a first matching block of a current block is determined; motion compensation enhancement is performed on the first matching block to obtain at least one second matching block; motion information of the current block is determined according to the at least one second matching block; and the current block is encoded according to the motion information.

Abstract: A power management system includes a primary power supply module, configured to be connected to a power supply and configured to generate a first voltage based on a voltage of the power supply, diagnose the first voltage, and store a diagnosis result of the first voltage; a secondary power supply module, connected to the primary power supply module and configured to generate a second voltage based on the first voltage; and a micro-controller unit (MCU), connected to the primary power supply module and the secondary power supply module and configured to read the diagnosis result of the first voltage from the primary power supply module and determine, based on the diagnosis result of the first voltage, whether to control a battery management system (BMS) to enter a safe state. The second voltage is lower than the first voltage and is an operating voltage of the MCU.

Abstract: Provided are a battery sampling chip and a battery management system. The battery sampling chip includes: a selector module, including a first multiplexer and a second multiplexer, wherein the first multiplexer and the second multiplexer are both used to collect status data of a first group of cells; an analog-to-digital conversion module, connected with the first multiplexer and the second multiplexer; and a data control module, used to send alarm information when converted status data sent by the analog-to-digital conversion module are not received within a preset duration. Through redundancy design of the multiplexers, whether the selector module fails or is abnormal can be effectively judged, thus avoiding the battery management system including the battery sampling chip from monitoring incorrect status data.