Abstract: Provided a method for determining a bandwidth, including: acquiring at least two first bandwidths of each of a plurality of group of pictures received by the terminal; determining a third bandwidth of the group of pictures based on at least one first bandwidth that is not less than a second bandwidth of the group of pictures in the at least two first bandwidths; and determining a target bandwidth of the terminal based on third bandwidths of at least two groups of pictures.

Abstract: A method and device for sending and receiving virtual goods are provided. A client device may communicate with a server. The client device may receive a receiving link from the server. The server may generate the receiving link in response to an invocation request received by the server from an invoker device that is different from the recipient client device after a total amount of the virtual goods in an invoker account corresponding to the invoker device is successfully transferred to a server account corresponding to the server. The receiving link may include instructions configured to cause the recipient client device to request a virtual goods package from the server. The client device may detect the link is triggered. The client device may request, from the server, in response to link being triggered, the virtual goods package. The client device may accept, by the recipient client device, the virtual goods package by interacting with the server via the receiving link.

Abstract: Disclosed are a video bit rate determining method and apparatus, an electronic device, a storage medium. The method includes: determining a cancellation parameter ?(k) for cancelling a throughput prediction error of a video block Fk; determining a cache amount prediction value of each of video blocks from the video block Fk to the video block Fk+N?1 at the end of download thereof based on a throughput prediction value of the video blocks and ?(k); determining a video playback quality loss value according to a weight value of the bit rate change between adjacent video blocks requested and a cache prediction error between the cache amount prediction value and a preset cache amount target value of the video blocks at the end of download thereof, requesting the video block Fk at a bit rate that does not exceed a bit rate r(k) when the video playback quality loss value is minimum.

Abstract: The present disclosure relates to a method and apparatus for determining bandwidth, and an electronic device and a storage medium. The method includes: determining whether there is historical bandwidth information in a first time window; determining whether there is historical bandwidth information in at least one second time window in response to determining that there is no historical bandwidth information in the first time window; and calculating target bandwidth information according to the historical bandwidth information in response to determining that there is the historical bandwidth information in the second time window, wherein the second time window covers the first time window.

Abstract: The disclosure relates to a data transmission method, an electronic device, and a storage medium. The method includes: obtaining a plurality of pieces of sub-data of data to be transmitted; determining a tolerant delay upper limit according to transmission delays of available transmission links, wherein the tolerant delay upper limit is greater than a minimum transmission delay among the transmission delays of the available transmission links; calculating a selection probability of each available transmission link to be selected for sub-data transmission based on the tolerant delay upper limit and the transmission delays of the available transmission links; allocating the plurality of pieces of sub-data to the available transmission links according to selection probabilities of the available transmission links, and transmitting each piece of sub-data through an available transmission link allocated to the each piece of sub-data.

Abstract: A method for training a bit rate decision model is provided. The method includes: acquiring first probabilities corresponding to first decision bit rates by inputting a network throughput at a first moment, first time length variation information, and a target decision bit rate at a second moment to a first model; determining a target decision bit rate at the first moment; acquiring second time length variation information by inputting the target decision bit rate at the first moment to the simulated interactive environment; acquiring a first evaluation value based on a network throughput at the third moment, the second time length variation information, and the target decision bit rate at the first moment; and updating a model parameter of the first model based on the first evaluation value until any iteration process meets a first iteration ending condition, to obtain a bit rate decision model.

Abstract: Disclosed are a motor variable frequency driving system and a multi-split central air conditioner. The motor variable frequency driving system includes: a three-phase alternating-current input, a rectification module, a thin-film capacitor, an inverter, a vector control module, an A/D sampling module and a steady state processing module. The rectification module is connected to the three-phase alternating-current input; the thin-film capacitor is arranged between output ends of a direct current output; an input end of the inverter is connected to an output end of the direct current output; an output end of the inverter is connected to a three-phase alternating current motor; the vector control module is connected to the inverter; the A/D sampling module is used for collecting direct current bus voltages of two ends of the thin-film capacitor; and the steady state processing module is connected to the A/D sampling module.

Abstract: Disclosed are a method and apparatus for bandwidth prediction, an electronic device and a storage medium. The method includes: acquiring active network states at a plurality of time points within a historical time period, and setting network states, missing from the plurality of time points, to be preset values; generating a first network state sequence from the network states at the plurality of time points according to a chronological order; converting, by using feature information between the missing network states and the real network state in an auto-encoder, the missing network states in the first network state sequence into predicted network states, so as to obtain a second network state sequence output by the auto-encoder; and predicting a network bandwidth according to the second network state sequence.

Abstract: Provided is a method for transmitting a media stream, the method including: determining, from address information of a media stream with a plurality of bit rates, target address information of the media stream with a target bit rate in response to a frame acquisition instruction for the media stream; determining a starting position of to-be-acquired media frames corresponding to the target bit rate in the media stream; and sending a frame acquisition request carrying the target address information and the starting position to a server, wherein the frame acquisition request is configured to instruct the server to return, at the target bit rate, the media frames starting from the starting position in the media stream.

Abstract: A method for switching a bit rate is provided. The method includes: receiving a media frame in a media stream; acquiring playback status information of the media stream; determining a target position according to a position of the media frame in the media stream in response to that the playback status information meets a bit rate switching condition, wherein the target position is a position where the media frame is received in the media stream; and sending a frame acquiring request to a server based on the target position, wherein the frame acquiring request is used for instructing the server to return media frames starting from the target position in the media stream based on a target bit rate.

Abstract: A method for transmitting resources, including: acquiring a pull position parameter of a multimedia resource in response to a frame acquisition request of the multimedia resource, where the frame acquisition request is used to request transmission of media frames of the multimedia resource, and the pull position parameter is used to indicate an initial pull position of the media frames of the multimedia resource; determining an initial frame of the multimedia resource based on the pull position parameter of the multimedia resource; and transmitting the media frames of the multimedia resource starting from the initial frame, where a timestamp of the media frames is greater than or equal to a timestamp of the initial frame.

Abstract: The present disclosure provides a method for transmitting resources. The method includes: determining the target bitrate of a target moment; in response to the target bitrate being inconsistent with the current bitrate, acquiring target address information of a multimedia resource having said target bitrate; and sending to a server a frame acquisition request carrying the target address information, the frame acquisition request being used to instruct the server to return a media frame of said multimedia resource at the target bit rate.

Abstract: Embodiments of the present application provide an array substrate and manufacturing method thereof, and a display panel, display device, display kit. The array substrate includes: a base substrate, and a reflective layer on a side of the base substrate; the reflective layer includes: a plurality of micro-capsules; each of the micro-capsules includes: a plurality of absorbing particles and a plurality of reflecting particles; the absorbing particles are magnetic particles absorbing light; the reflecting particles are non-magnetic particles reflecting light.

Abstract: The present disclosure provides a deep neural network (DNN)-based reconstruction method and apparatus for compressive video sensing (CVS). The method divides a video signal into a key frame and a non-key frame. The key frame is reconstructed by using an existing image reconstruction method. The non-key frame is reconstructed by using a special DNN according to the present disclosure. The neural network includes an adaptive sampling module, a multi-hypothesis prediction module, and a residual reconstruction module. The neural network makes full use of a spatio-temporal correlation of the video signal to sample and reconstruct the video signal. This ensures low time complexity of an algorithm while improving reconstruction quality. Therefore, the method in the present disclosure is applicable to a video sensing system with limited resources on a sampling side and high requirements for reconstruction quality and real-time performance.

Abstract: A fault tolerance processing method includes: sending, by a server, a data read packet to an external controller, where the data read packet is used to request the external controller to read data in an indicated storage location, and a packet format of the data read packet complies with a packet format specified in the memory-semantic network protocol; receiving, by the server, indication information sent by the external controller, where the indication information is used to indicate a response status of the external controller to the data read packet; and determining, by the server, the response status of the external controller to the data read packet based on the indication information, and performing fault tolerance processing when the response status is an abnormal response.

Abstract: Disclosed are a method and apparatus, a computer device and a storage medium for media code rate self-adaptation. The method includes the following steps: acquiring network quality information of a user network; acquiring, based on a pre-set code rate correspondence list, code rate information corresponding to the network quality information; and determining a code rate indicated by the code rate information as a code rate parameter of a target object.

Abstract: Embodiments of the present application provide a data processing method and device. The method comprises: determining if a data packet satisfies a receipt condition based on a cache occupancy amount and a preset cache occupancy threshold, wherein the cache occupancy threshold is determined based on the priority level of a given data packet; and storing the data packet in the cache when the data packet satisfies the receipt condition. Embodiments of the present application ensure normal transmission of high priority data packets, thereby improving the transmission quality of streaming media data, and achieving an improvement in the broadcast quality of streaming media.

Abstract: A method for transmitting a multimedia resource, including: determining target address information based on a media presentation description of a multimedia resource, where the media presentation description includes address information of the multimedia resource having different code rates, and the target address information is address information of the multimedia resource having a target code rate; and sending a frame acquiring request carrying the target address information to a server, where the frame acquiring request is configured to instruct the server to return media frames of the multimedia resource at the target code rate.

Abstract: The present disclosure relates to a medical silicon rubber having high mechanical property and a preparation method thereof. The medical silicon rubber comprises the following raw materials in parts by weight: 50˜90 parts of silicon rubber, 10˜50 parts of polyurethane, 10˜50 parts of fillers, 2˜6 parts of hydrogen-containing silicon oil and 2˜5 parts of a vulcanizing agent. The preparation method comprises: evenly mixing a part of fillers with silicon rubber in an internal mixer for later use, and evenly mixing the other part of fillers with polyurethane in the internal mixer; and mixing the mixed polyurethane on an open type rubber refining machine, then successively adding hydrogen-containing silicon oil, the evenly mixed silicon rubber and the vulcanizing agent into the open type rubber refining machine many times by small portions, and finally vulcanizing the mixed rubber on a plate rubber vulcanizing machine for 5˜15 min at 150˜190° C.

Abstract: The present disclosure provides a method and device for determining a video bitrate and a storage medium. The method includes: acquiring, after a (k?1)th video block is stored in a buffer and before a kth video block is stored in the buffer, a first predicted throughput value and an error range thereof of the buffer corresponding to the kth video block, and acquiring a offset and a variation y(k); calculating a first bitrate variation based on the current state, the first predicted throughput value and a preset evolution model; calculating a second bitrate variation based on the current state, the first predicted throughput value and the error range; and determining a video bitrate of the kth video block based on a video bitrate of the (k?1)th video block, the first bitrate variation and the second bitrate variation.