111 results about "Block code" patented technology

A video encoder and video decoder may determine to code a block of video data using a non-directional intra mode. The video encoder and video decoder may determine a secondary transform from a secondary transform set for the block, and perform a transform process on the block of video data using the secondary transform. For non-directional intra prediction modes, the secondary transform set has a first number of transform kernels that is less than a second number of transform kernels in the secondary transform set for other blocks coded using a directional intra mode.

A video coder may determine transform sets for blocks coded with combined inter-intra prediction (CIIP) mode and / or a geometric partitioning (GEO) inter mode. The video coder may determine the transform sets from intra prediction modes derived for the blocks coded with CIIP mode and GEO mode.

This disclosure provides a method of decoding a digital speech signal, a speech decoder, a handset or mobile radio, and a base station or console. The method includes receiving a voice bit stream including at least one frame of bits that includes block codes, determining least confident bits in a first block code, generating candidates for the first block code based on the least confident bits, determining a first distance between each candidate and the first block code, and demodulating at least one other block code to obtain at least one demodulated vector. For each demodulated vector, a second distance between the demodulated vector and possible transmitted vectors is determined, and from the possible transmitted vectors, a vector corresponding to a minimum second distance is selected as a corrected demodulated vector. A minimum total distance is determined, and a candidate is selected as a corrected first block code.

The invention relates to the technical field of spacecraft satellite-ground communication, and provides a low-earth-orbit satellite communication time delay optimization method and system aiming at the defects that a traditional low-earth-orbit satellite communication satellite system and a satellite communication frame have high time delay and poor real-time communication function. The core of the invention comprises three parts: firstly, an efficient receiving and transmitting end coding and decoding technology: a transmitting end adopts a subblock coding technology of a Turbo code; and a receiving end uses an MAX-Log-MAP algorithm to carry out rapid iterative decoding on the word block code of the Turbo code. And secondly, compressing the user data: carrying out lossless compression on the user data and a satellite communication frame header by using Huffman coding, reducing the transmission data volume, improving the data processing speed, and thus reducing the processing time delay. And finally, simplifying the frame header design: optimizing the frame header of the communication frame so as to reduce the total length of each frame. The method is particularly suitable for communication satellites (the orbit height is less than or equal to 1500km) in a low earth orbit.

The application relates to the technical field of distributed applications, and discloses a document synchronization method for code change, which comprises the following steps: in response to a code deployment request, monitoring code change through a change capturing engine and obtaining a unified change set; performing document paragraph positioning on an interface definition file according to the unified change set, constructing a change-paragraph mapping list and a document synchronization task; performing acceptance review on the document synchronization task based on acceptance rules to obtain a review result; and making a decision based on a blocking condition and the unified change set, the change-paragraph mapping list and the review result to determine whether to block code deployment and complete document synchronization. The method can realize accurate positioning of abstract code change to technical document paragraphs, form a unified and feasible evidence chain to jointly drive a document synchronization process and decision-making. The application further discloses a document synchronization device for code change and electronic equipment.

The invention provides a low earth orbit satellite network video code rate determination method and device and electronic equipment. The method comprises the following steps: acquiring link state information of a low earth orbit satellite network link; predicting whether a link reconstruction event occurs at the next moment based on the link state information; and under the condition of predicting that a link reconstruction event occurs in the low earth orbit satellite network link at the next moment, dividing a time domain into independent control intervals, and independently determining the video block code rate at the next moment based on the network state of the independent control interval in each independent control interval. According to the method, the satellite network reconstruction event is predicted, and the video code rate is independently determined in the interval mode in the reconstruction event period, so that the video live broadcast experience quality in the low-orbit satellite network environment is improved.

A decoder obtains a selection indication for a current block coded using an intra-based coding mode. A histogram of intra prediction modes (IPMs) is updated based on a first block reconstructed using a non-angular mode and selected for the current block. In accordance with the obtained selection indication, the histogram is updated based on one or both of: a first set of one or more IPMs associated with the first block, or a second set of one or more IPMs associated with a second block that overlaps a reference block indicated by the non-angular mode for the first block. The decoder reconstructs the current block based on the updated histogram.

The invention discloses an aircraft shape high-precision aerodynamic design method and device based on a quantum discrete adiabatic algorithm, and relates to the technical field of quantum computing. The method comprises the following steps: constructing a linear system model according to target aerodynamic data based on a computational fluid mechanics method; based on the cyclic shift basis matrix, according to the sparse coefficient matrix and the source item vector, performing block coding by using a linear combination unitary operator technology to obtain a block coding unitary operator; based on a preset iteration operator, constructing a walking operator according to the block coding unitary operator; according to the walking operator, line preparation is carried out through a cyclic calling method, and a quantum solving line is obtained; executing a quantum solving line, and measuring flow field quantum state information; and based on the target aerodynamic data, according to the flow field quantum state information, carrying out high-precision aerodynamic optimization design on the shape of the aircraft by utilizing an aerodynamic integration method. The high-precision aerodynamic design method for the aircraft profile is efficient and accurate based on the quantum discrete adiabatic algorithm.

The invention belongs to the technical field of containers, and discloses a container log asynchronous streaming transmission method and system based on a thread pool and a queue, and the method comprises the steps: receiving and analyzing a hypertext transfer protocol request parameter which is initiated by a client and is used for obtaining a target container log, and processing the analyzed hypertext transfer protocol request parameter, generating a log production task; the method comprises the following steps: receiving a log production task based on a pre-configured thread pool, obtaining a log stream of the log production task through a container engine, preprocessing the log stream, and transmitting the preprocessed log stream to a thread security queue for storage; and transmitting the thread security queue to a pre-configured hypertext transfer protocol response header in a block coding format, refreshing to the client, and judging whether the hypertext transfer protocol response header detects a termination signal or a thread event signal. According to the invention, all resources which do not need to be used due to disconnection of the client can be timely and thoroughly released, resource leakage is avoided, and the system stability is improved.

The invention discloses a coal mine image segmentation model and method based on VMama and a multi-expert hybrid network and a construction method thereof. The coal mine image segmentation model is constructed, the image block coding layer output of an encoder, the input and output of the first coding layer of a first VSS network are 1-N, and the input and output of an output end feature learning module are 1-N; the multi-expert hybrid network determines N expert models with relatively high scores based on a gating mechanism to perform enhancement processing to obtain a result, and the result is obtained through feature fusion; and the input of the feature learning module at the input end of the decoder is obtained by fusing the output and the features, the output of the decoding layer is obtained by fusing the features, and the input and the output of the segmentation head are segmented images. The method can significantly improve the segmentation precision and calculation efficiency of the coal image.

A multi-stage decoding algorithm for improving the decoding performance of bits encoded with a linear error-correcting block code of small or medium block length is provided. The algorithm comprises an input stage, at least two intermediate stages and an output stage. For each of the stages (except for the last intermediate stage and the output stage), a certain number of bit positions is selected and set to a maximum possible absolute LLR value. The output data of each stage is used to compute the input data of the next stage. Each of the intermediate stages executes a specified number of parallel decoding runs, and the input data for each of the intermediate stages is generated based on the output data of the previous intermediate stage and initial LLRs obtained after demodulation. The bit positions set to the maximum possible absolute LLR value in the previous stage cannot be used again in the next stage. At the output stage, only one decoding run is executed, for which input data are formed based on the initial LLRs and the LLRs obtained at the last intermediate stage.

The application provides a short-distance communication method and device with anti-interference capability, which is used to improve the anti-interference capability of a communication device and relates to the technical field of wireless communication. In the method, a sending device and a receiving device determine the code rate of channel coding according to the interference intensity of the space where the wireless link is located, and negotiate the channel coding mode with the receiving device; wherein the channel coding mode can be a non-uniform segmented block code. The sending device adopts the non-uniform segmented block code and the code rate to perform channel coding on the data packet when sending the data packet to the receiving device. Based on the scheme, the code rate of channel coding can be selected according to the interference intensity of the space where the wireless link is located when the sending device and the receiving device transmit the data packet, and the negotiated channel coding mode and the determined code rate are used to code the data packet to be transmitted, so that the gain and anti-interference capability of the wireless link established based on the short-distance communication protocol can be improved.

This invention discloses a multidimensional coupled chain code encoding method based on generalized integrated interleaving codes. It selects d-dimensional chain codes from s-dimensional chain codes for generalized integrated interleaving encoding, resulting in the l-th... i The code length of the wiry chain code is [value], and the information bit length is [value]. The remaining (s-d) wiry chain code is encoded, and the l′ [value] is [value]. i' Wirachain codes use linear block codes with a code length of and an information bit length of as the basic code, and the sequence c... (t) Initialize to an all-zero sequence; set the information sequence u Divide into sL groups. For the l-th dimensional zip code, divide into groups of length k. t,l -m t,l sequence u (t,l) With a length of m t,l sequence w (t,l) The data is fed into a multiplexer to obtain a length of k. t,l sequence a (t,l) The sequence is fed into a basic code encoder for encoding to obtain a codeword sequence. Simultaneously, the sequence is fed into a generalized integrated interleaved code encoder for encoding to obtain another codeword sequence. c (t,0) , c (t,1) ,…, c (t,s‑1) The encoded output sequence c at time t is obtained by feeding it into the multiplexer. (t) This invention has the advantages of simple coding, ease of implementation, and good performance.

This invention provides a high-sensitivity satellite navigation signal acquisition method. It utilizes an improved acquisition algorithm based on FFT coefficient compensation and block code Doppler compensation to acquire satellite navigation signals, obtaining the acquisition result. This invention effectively reduces the impact of Doppler frequency offset during long coherent acquisition times through coefficient-compensated FFT operations and the block code Doppler compensation algorithm. When calculating the FFT spectrum, only the spectral lines at specified positions need to be calculated, effectively shortening the calculation time, improving acquisition efficiency, and achieving high-sensitivity acquisition of weak signals.

Aspects of the present disclosure provide techniques for block code based constellation shaping. An example method includes generating a first set of bits for transmission; generating a plurality of cyclic redundancy check bits and appending them in the first set to obtain a second set of bits; generating a set of log-likelihood ratios (LLRs) corresponding to the second set of bits, wherein a size of the LLR set depends on a number of physical resource blocks configured for transmitting the second set of bits and a modulation and coding scheme; decoding the LLR set by using a block code according to a shaping code rate to obtain a shaping bit sequence; generating a sequence of shaped symbols based at least in part on the sequence of shaped bits and the second set of bits; and transmitting the shaped symbol sequence to a receiving device.

Affine multi-HMVPs are described. In an example aspect, a method for video processing includes deriving, for a conversion between a current block of a video and a bitstream representation of the current block, an affine model of the current block based on affine-related information stored in at least one of a plurality of history motion vector prediction (HMVP) buffers storing affine-related information of blocks coded before the current block in different categories, and performing the conversion by using the derived affine model.

The application discloses an elevator risk early warning method and system based on time sequence block and dynamic and static fusion, comprising: acquiring dynamic time sequence data and static attribute characteristics of an elevator and performing normalization processing; utilizing a block coding mechanism to divide the dynamic time sequence characteristics into time sequence blocks, extracting local semantic representations and long-range time sequence dependencies of each block through a channel-independent deep neural network backbone; eliminating a reverse normalization step at an output end of the backbone network, and directly retaining a normalized distribution representation of the dynamic characteristics; splicing and fusing the retained dynamic characteristic vector and the normalized static attribute characteristics to construct a multivariate joint interaction feature space; utilizing a flattening fusion mechanism to perform full-dimensional space-time feature interaction mapping; and finally outputting an elevator fault probability in a future preset period. The application can effectively solve the problem of missing cross-variable interaction in long time sequence data, and significantly improve the accuracy and robustness of elevator fault prediction under non-stationary data flow.

The application discloses a decoding method, device and readable storage medium, and belongs to the technical field of communication. The method comprises the following steps: a decoding end determines a coding coefficient vector according to a received signal and a new space-time block code (NSTBC) codebook; the decoding end determines the power sum of the sending symbols on the sending antenna in the first two symbol periods according to the received signal; and the decoding end decodes original coding input symbols in a current symbol period according to the coding coefficient vector, a differential space-time block code (DSTBC) coding mode, the NSTBC codebook and the power sum of the sending symbols on the sending antenna in the first two symbol periods, wherein the first two symbol periods are two adjacent symbol periods before the current symbol period.

Provided is a transmission device comprising: a polarization time block coding unit that performs space-time coding with respect to a transmission signal, thereby generating a polarization phase modulation signal; a quadrature phase signal generation unit that generates, for each polarized wave, a quadrature phase signal of a dual polarization phase modulation signal generated by the polarization time block coding unit; and a transmission unit that alternately transmits the dual polarization phase modulation signal and the quadrature phase signal of each polarized wave on the time axis.　

For a transform block of a frame of a video encoded with conventional residual coding, if an inferred sub-block of a transform block of an sb codeflag is not present is a DC sub-block and / or the last one of transform blocks containing a non-zero coefficient level, the decoder inferes that the sb codeflag of that sub-block is 1. And otherwise, inferring that the sb coded flag is 0. If a transform block is encoded using transform skip residual encoding, the sb coded flag of a sub-block in which no sb coded flag exists is estimated to be 1. The decoder determines an initial context value of an entropy coding model based on the sub-block flag of the inferred sub-block, and determines a sub-block flag of the encoded sub-block using the entropy coding model.

The invention belongs to the technical field of communication signal processing and code identification, and solves the problem of channel code identification when a non-cooperative communication system lacks coding parameter prior information and training data with labels. According to the technical scheme, the method is characterized in that a unified recognition framework is constructed based on five features, namely, a rank fluctuation feature is used for distinguishing convolutional codes and linear block codes, a continuous zero spectrum feature is used for recognizing BCH codes, a multi-dimensional structure feature is used for detecting Turbo product codes, a bit distribution deviation feature is used for recognizing polarization codes, and an average absolute column correlation feature is used for distinguishing LDPC codes and non-LDPC codes; blind recognition of five types of channel codes including BCH codes, LDPC codes, convolutional codes, Turbo product codes and polarization codes is achieved. The method does not depend on coding parameter prior information, does not need training, is high in recognition rate under a low signal-to-noise ratio, is high in generalization capability, and is suitable for real-time and resource-limited scenes.

The present disclosure discloses a block code service apparatus. The block code service apparatus according to the present disclosure comprises: a command analysis unit that generates at least one embedding vector on the basis of a user command; a database management unit that manages a database of a plurality of block codes each configured in a block code format; a block selection unit that selects, from among the plurality of block codes, at least one block code corresponding to the at least one embedding vector; and a block connection unit that connects the selected block codes to generate an artificial intelligence model.

A method and apparatus for video encoding and decoding are disclosed. According to the method, for a current second patch encoded in a cross-component linear model related mode, a list of most probable linear model modes is generated, the list comprising one or more most probable linear model candidates selected from a list of candidates. Mode selection information associated with the list of most probable linear model modes is signaled or parsed. And encoding or decoding the current second color block by using a target candidate selected from the most probable linear model mode list according to the mode selection information, and generating prediction data of the current second color block by applying a current linear model related to the target candidate to the current first color block.

The invention discloses an improved asymmetric multi-target task allocation algorithm based on particle swarm optimization, and the algorithm comprises the steps: carrying out the modeling solving of a task allocation process under an asymmetric condition, carrying out the coding of an aircraft number and a task target, and carrying out the updating of the aircraft number and the task target through employing two groups of particle swarm optimization; each aircraft is restrained to fly at least one target, and at least one aircraft is restrained to arrive at each target position; constraint is carried out by fixing multiple target block codes, diversity is guaranteed through a random initial target sequence, and the reasonability of a final allocation scheme is guaranteed through full diversity evolution of a population.

Methods, systems, and devices for wireless communications are described. A transmitting device may support bit shaping in a block coding scheme and a probabilistic shaping framework to generate shaped bits including both information bits and shaping bits without conveying extra information (e.g., in addition to the shaped bits) to a receiving device. The transmitter may use a decoder, such as a polar decoder (e.g., a modem configured for both coding and decoding), to determine a set of shaping bits based on the information bits. The transmitting device may also map the information bits to frozen bit positions of a polar code and the shaping bits to polar information bit positions such that the coded (e.g., shaped) bits from the polar encoder satisfy a target probability distribution.

A memory device includes a boot block that stores boot block code encoded using an encoding scheme. The boot block code includes a set of machine-readable instructions for booting the memory sub-system. A read command directed at the boot block is received while the memory device is in a boot state. Based on the command, the encoded boot block code is read from the boot block and decoded based on the encoding scheme. The decoded boot block code is provided to a memory sub-system controller responsive to the command

Methods for video decoding and encoding, apparatuses and non-transitory computer- readable storage media thereof are provided. One method for video decoding includes obtaining, by a decoder, a current block coded with Geometric Partition Mode (GPM); obtaining, by the decoder, a first Intra Block Copy (IBC) prediction and a second IBC prediction based on partitions using GPM for the current block; receiving, by the decoder, coding modes of the current block; and obtaining, by the decoder, a final prediction for the current block using the first IBC prediction, the second IBC prediction, and the coding modes of the current block.

The application provides a point cloud coding method, device and storage medium. The method comprises the following steps: acquiring a point cloud, and performing block division on the point cloud to obtain a current block; acquiring first information of the current block, and determining whether to use a macro block coding mode to code the current block according to the first information of the current block. For example, according to at least one of the division depth of the current block, the size of the bounding box of the current block, the number of points in the current block and the point density in the current block, it can be accurately judged whether the current block is coded by using the macro block coding mode, thereby improving the coding efficiency of the current block.

Partitioning of data into data blocks and multiplexing a phase tracking reference signal (PTRS) with the data blocks provides a space time block coding (STBC) signal structure between pairs of the data blocks for transmission on respective antenna ports. Signaling that indicates parameters associated with the partitioning and multiplexing is communicated between communication devices in a wireless communication network, and the data blocks multiplexed with the PTRS are transmitted and / or received in the wireless communication network.