30 results about "Hamming code" patented technology

The invention discloses an agricultural disease hash retrieval method based on DV stabilization and adaptive feature enhancement, and belongs to the technical field of agricultural disease image retrieval and deep hash, and the method comprises the following steps: 1, obtaining an original disease image as the input of a backbone network; step 2, extracting disease image features by using a backbone network; step 3, based on a self-adaptive feature enhancement module, enhancing the disease image features to obtain self-adaptive image features; step 4, optimizing network parameters through a total loss function containing DV stabilization; step 5, obtaining a binary hash code through the hash layer; and step 6, carrying out Hamming distance sorting on the obtained Hamming codes and the Hamming codes of all the images in the retrieval set obtained by the same method, and returning a plurality of disease images with the Hamming distance smaller than a preset Hamming distance. The agricultural disease image retrieval efficiency and precision are effectively improved.

The invention discloses a multi-agent cooperative tracking control method based on dual-channel event triggering. The method comprises the following steps: constructing a nonlinear multi-agent system mathematical model with uncertain dynamics; defining a tracking error function and constructing an error system by utilizing coordinate transformation; designing a virtual controller of each order by using a backstepping control method; designing a dual-channel event triggering mechanism, actual controller input and an adaptive law; and performing multi-agent cooperative tracking control according to the designed dual-channel event triggering mechanism and the controller. By adopting the control signal updating and parameter updating control strategy based on the dual-channel event triggering mechanism, unnecessary communication and calculation can be reduced, and the effect of remarkably reducing the burden of communication resources and calculation resources is achieved. By adopting an event triggering mechanism and an extended Hamming code redundant coding technical means, the security protection of control signal transmission can be realized, and the technical effects of improving the anti-attack capability of the system and guaranteeing the data integrity in an open network environment are achieved.

The invention discloses an important data error correction method suitable for an aerospace power supply and distribution single machine. According to the method, the Hamming code principle and the binary coding principle are utilized, and the characteristics of a microcontroller of the aerospace power supply and distribution stand-alone are combined, so that an error correction coding and decoding method is designed. According to the method, the single-machine micro-control system can correct a certain degree of data bit flipping errors under the condition that the data bit flipping errors occur under the influence of space environments such as space single particles, errors of important data caused by the space environments are reduced, and then part of autonomous control operations threatening spacecraft safety are prevented from occurring.

The invention discloses a multi-mode starting automatic control method and system based on a PC Farm array server, and relates to the technical field of server cluster management.The method comprises the steps that a central node creates a fine-grained strategy instruction and a corresponding mirror image instruction according to deployment requirements, and the fine-grained strategy instruction and the corresponding mirror image instruction are compressed into a mirror image compressed package through LZMA; the edge node extracts the verification label from the mirror image compressed package, analyzes the verification label through quantum error correction control, repairs a bit flipping error, and generates an anti-interference standardized instruction stream; based on the anti-interference standardized instruction stream, generating a quantum code stream data block through Hamming code coding, writing the quantum code stream data block into a configuration interface address, and correcting signal deviation to trigger a reset command; and executing the reset command, collecting a BIOS startup log, and comparing the BIOS startup log with pre-stored features to generate a startup state verification report. According to the method, accurate calibration and sequential control of hardware configuration are realized, the accuracy of starting parameters is ensured, and the high efficiency and stability of automatic deployment are improved.

This invention relates to the field of semiconductor memory repair technology, specifically a QR code encoding method and system for DRAM chip repair mapping. It includes: determining the total number of blocks and the allowable number of damaged blocks; setting encoding rules containing block status information and verification information; testing the chip under test to identify the location of damaged blocks; generating repair data according to the encoding rules and calculating the check byte using extended Hamming code; converting the encoded information into a QR code and laser-printing it on the chip surface; scanning and reading the code on the production line for verification and error correction, automatically correcting single-bit errors, prompting rescanning for double-bit errors, and writing the data to the storage area; and reading the repair data from the storage area during application, performing verification and error correction again, and executing block mapping. This invention ensures reliable transmission of repair data through a two-stage error correction protection mechanism, significantly improving chip utilization.

The application provides a remote control decoding device based on a Hamming code, comprising: a shift register, configured to convert acquired serial data based on a clock signal; two code table storage units, respectively configured to store preset Hamming code tables; a count comparison module, configured to intercept corresponding comparison bits based on the clock signal; and a comparator, configured to compare the comparison bits intercepted by the count comparison module with comparison bits corresponding to the serial data, and perform decoding based on preset decoding control logic in the case that a comparison result meets a preset condition, and send a decoding result to a preset instruction processing unit. The remote control decoding device based on the Hamming code does not need to occupy more hardware resources in the case that a code distance requirement is met, and has good universality and expansibility.

The present application relates to a method for calibrating binocular camera and laser radar based on a hollowed-out elliptical calibrator, and belongs to the field of robot vision. A square aluminum plate of the hollowed-out elliptical calibrator is provided with Hamming code square grid marks in a clockwise direction on four corners of one side, has an elliptical through hole in the middle, and the center of the elliptical through hole coincides with the center of the square aluminum plate. The long axis of the elliptical through hole is in the vertical direction. The hardware system of the method for calibrating includes a binocular camera, an upper computer, a 16-line laser radar and a hollowed-out elliptical calibrator. The upper computer has an image processing program, a three-dimensional point cloud processing program and a mathematical calculation program. The operation steps of the method for calibrating are as follows: (1) image feature recognition of the hollowed-out elliptical calibrator, (2) point cloud feature recognition of the hollowed-out elliptical calibrator, (3) calculation of the external parameters of the camera and the 16-line laser radar, and (4) determination of the calibration result. The method for calibrating improves the calibration accuracy and robustness, and is suitable for practical application.

The application provides an anti-single event upset processing method for avionics, which comprises the following steps: step one, defining and initializing a configurable hierarchical check data structure; step two, entering a loop task and obtaining to-be-written data; step three, writing the to-be-written data and a correction detection mode into the data structure; and step four, when the data needs to be read, reading to-be-read data from the data structure in groups. Compared with a traditional triple modular redundancy scheme, the application reduces storage occupation by more than 60%, solves the problem of high cost of directly using Hamming code for real-time correction and detection of memory data in an aviation device, and reduces resource consumption of encoding and decoding while having correction and detection capability, thereby meeting high requirements of the aviation device on real-time performance and resource efficiency.

The embodiment of the invention provides a data processing method and device, a storage medium and electronic equipment, and relates to the technical field of computers, and the method comprises the steps that a transmitting end obtains first I2S audio data, carries out the inter-frame splitting of the first I2S audio data, and obtains at least one first I2S data frame; encoding each first I2S data frame by using a Hamming code encoder to obtain an encoded second I2S data frame; the Hamming code encoder is used for encoding 4-bit data code words into 7-bit data code words, and data encoded by the Hamming code encoder is used for supporting error detection and error correction of the data; performing recombination according to the encoded second I2S data frame to obtain second I2S audio data; and sending the second I2S audio data to a receiving end based on an I2S protocol. Therefore, by grouping the frames and adopting (7, 4) Hamming codes for coding, the error correction capability is improved under the condition of increasing the minimum error correction bits, the reliable transmission of the I2S audio data is realized, and the hardware complexity is reduced.

The application discloses a JPEG image multi-carrier steganography method based on a monkey king evolution algorithm, which is used for embedding secret information into images and comprises the following steps: processing N images according to a user input password and an error correction matrix H based on a (7, 4) Hamming code to obtain N carrier images, wherein a matrix of the i-th carrier image is H i ′, i = 1, 2,..., N; converting secret information to be embedded Secret into a binary form, and encrypting to obtain a binary sequence M = (m1, m2,..., m L L is the length of the binary sequence M; taking the minimum difference between a carrier image feature set and a stego image feature set as an objective, using a monkey king evolution algorithm to perform non-uniform dynamic allocation on the load size of each carrier image, and according to the allocation result, cutting and writing the secret information into the corresponding carrier image to obtain a stego image set. The application can solve the problem of efficient allocation of secret information among multiple carrier images, so that the stego image is least detected.

The application discloses a data stream error detection and correction verification method and device, equipment and a storage medium, and the method comprises the following steps: reading the first data stream output after the sending end Hamming code encoding, decoding the first data stream, and obtaining the first information code; obtaining the first check code according to the first information code, performing XOR operation on the first check code and the first original check code in the first data stream, and obtaining the first verification result; Hamming code encoding the second information code to obtain the second data stream, and sending the second data stream to the receiving end; obtaining the second check code after the receiving end decodes the second data stream, performing XOR operation on the second check code and the second original check code in the second data stream, and obtaining the second verification result; and obtaining the verification result of the data stream transmission process error detection and correction based on the first verification result, the first data stream, the second verification result and the second data stream. The verification of the Hamming code SECDED check data stream can be realized, and the data processing speed is high.

A Hamming code encoding and arranging method includes: dividing an original data into N groups of to-be-encoded data and performing Hamming code encoding on the N groups of to-be-encoded data to generate N groups of encoded data; for the N groups of encoded data, extracting p-bit encoded data in each group of encoded data for successive arrangement; when the number of bits remaining in each of the N groups of encoded data is greater than or equal to p, extracting p-bit encoded data in each group of encoded data for successive arrangement; and when there is no data remaining in each of the N groups of encoded data, generating rearranged encoded data according to the arrangement; or when there are q(<p) bits remaining in each group of encoded data, extracting q-bit encoded data in each group of encoded data for successive arrangement to generate rearranged encoded data.

The invention discloses a cloud environment encrypted image retrieval system and method based on a hybrid architecture multi-modal model, a computer readable medium and electronic equipment. The method comprises the following steps: respectively extracting local detail features and global semantic features of an image by using a CNN (Convolutional Neural Network) and a Transform, and dynamically fusing the local detail features and the global semantic features through a cross attention mechanism; meanwhile, extracting semantic features of the associated text; mapping the fused visual features and text features to a unified Hash space, generating binary Hash codes by using progressive quantization, and realizing cross-modal semantic alignment; encrypting the Hash code by adopting a BFV homomorphic encryption algorithm; and the cloud server directly calculates and queries the Hamming distance between the Hamming distance and the Hamming code of the image library in a ciphertext state, and performs sorting retrieval by fusing vision and text similarity. According to the method, multi-scale visual information and text semantics are effectively fused, and high-precision cross-modal image retrieval is realized by using homomorphic encryption on the premise of ensuring data privacy.

The application discloses a DNA storage coding method with local GC content balance, which adopts a four-element sequence coding method for original data, and adopts a splicing method to splice a GC content globally balanced code word set for several times, so that a new four-element code satisfies the GC content local balance, so that the four-element DNA sequence composed of A, T, C and G can be more conveniently corresponded, and the base substitution error and the base insertion and deletion error can be respectively corrected by combining a Hamming code and a VT code. Furthermore, the GC content of the DNA coding can be finally ensured to be globally stable at 40% to 60% by selecting the code word satisfying the GC content in the Hamming code, and the DNA segment in each fixed length sliding window satisfies the GC content stable at 30% to 70%.

The application provides an encoding modulation method suitable for a short-distance high-speed optical fiber communication system, which comprises the following steps: step 1, grouping input information bits into a first information sequence u a with a length of k a bits without any operation and a second information sequence u s with a length of k s bits to be shaped; step 2, converting uniformly distributed binary information into a symbol sequence with a target distribution by using a distribution matcher based on an enumeration sphere mapping method, and the symbol sequence after binary labeling is called the shaped information u c ; step 3, taking u c as input information of a forward error correction coding module, and performing twice encoding, first encoding based on a hard decision ladder code, and then encoding based on a soft decision Hamming code. The scheme combines the probability shaping technology based on the enumeration sphere mapping and the forward error correction coding based on the high-speed short-distance optical interconnection, maintains the probability distribution, and avoids the damage of the forward error correction coding to the probability distribution.

An arrangement for providing privacy in a communication network. In the arrangement privacy is applied in two steps, wherein the first part comprises using a Hamming code privatizing data in a network. After applying the Hamming code, it is determined how much additional differential privacy is required for fully privatizing the information. Then the information is fully privatized using a differential privacy method.

An arrangement for providing privacy in a 3G communication network. In the arrangement privacy is applied in two steps, wherein the first part comprises using a Hamming code, ordered such that adjace

The application relates to an error correction coding and probability shaping method applied to short-distance optical fiber communication, which comprises the following steps: firstly coding source information based on a hard decision ladder code, and secondly coding the source information after the first coding based on a soft decision Hamming code; dividing the source information after the second coding, and the divided source information will be subjected to probability shaping based on an enumeration sphere mapping or be used for high-order modulation. The beneficial effect of the application is that the technical scheme can adopt a probability shaping technology to adjust the probability of symbol appearance and reduce the average power of a signal. The maximum capacity of a communication channel can be realized by optimizing the probability distribution of a source, the probability shaping technology is a method for improving the information transmission rate by adopting a source distribution other than a uniform distribution under the constraint of limited average power, and the probability shaping technology can guarantee the communication reliability while reducing the transmission power of a transmitter.

The invention provides a square octagonal information encoding and decoding method and system for a commodity outer package, and relates to the technical field of data encoding and information storage. According to the method, a regular octagon is spliced in a square to construct a basic coding unit, the regular octagon is uniformly divided into eight regions, and 8-bit data is represented according to whether independent sub-regions are blackened or not; meanwhile, the four triangular areas at the corners of the square represent 4-bit check bits by judging whether the four triangular areas are blackened or not, Hamming codes (12 and 8) are formed, and check and error correction of data are achieved. The four basic coding units are spliced to form an integral coding structure, and 32-bit information can be completely represented. According to the method, the intuition of geometric figure coding and the error correction capability of Hamming codes are combined, data coding and decoding can be efficiently and reliably completed in the scenes of commodity storage, logistics circulation and the like, and the traceability of commodities and the accuracy of information recognition are greatly improved.

A spaceborne software EDAC fault-tolerance method for COTS platforms is proposed. Based on the spaceborne EDAC hardware implementation, an EDAC verification module and checksum are designed. The checksum uses Hamming code, with each executable codeword being 32 bits long and the checksum being 7 bits, achieving a one-to-two verification function. Through executable code segment instrumentation, EDAC verification module call statements are inserted before the call statements of each module in the original executable code, enabling EDAC verification to be completed before the called module executes. The checksum of each instrumented executable code is calculated and stored as part of the program area. An improved approach of "running code priority verification" is adopted, combining pre-scheduling verification and idle-period verification to perform EDAC verification on the executable code. Simultaneously, a copy of the EDAC algorithm is stored in the program storage area, enabling mutual verification between the two EDAC algorithm modules to ensure the correctness of the EDAC module itself.

An encoding method includes: obtaining a generator matrix for encoding, where the generator matrix is determined based on a target parity-check matrix of a Hamming code for encoding, the target parity-check matrix is based on a target function for decoding, the target function is used to determine a not-all-zero row vector extended based on the target parity-check matrix, and the target function is one of a predetermined function set; encoding information bits using the generator matrix to obtain an encoded data stream; and sending the encoded data stream.

The invention discloses a high-speed interface control circuit for interconnection among core particles, which is used for solving the problem of data transmission among chips of a multi-core particle system. Based on a fine granularity flow control mechanism, a flow control packet and a segmented data packet structure are defined, so that the problem of transmission delay caused by over-coarse flow control granularity of a traditional interface is solved, accurate control of a single transmission level is realized, and the transmission delay is reduced. Based on a lightweight fault-tolerant mechanism, through combination of Hamming code protection packet header and packet tail key information and CRC-3 verification data load, the problem of overlarge resource overhead of a traditional error correction mechanism is solved, hierarchical protection of control information and data load is realized, and fault-tolerant overhead is reduced.

According to the lightweight Hamming code encoding and decoding error correction acceleration method under the RISC architecture, a Hamming code assembly instruction is defined under the RISC-V architecture, encoding and decoding error correction of the lightweight Hamming code is executed from an instruction-level error correction primitive, an object needing encoding and decoding error correction can be selected from the register-level granularity, the object is started from nothing to thing and is started according to needs, overall hard wiring waste is avoided, and the error correction speed of the lightweight Hamming code is increased. The flexibility is high, a software algorithm is replaced by a special instruction, cycle loss caused by conditional branches, data dependence, software circulation, cache and the like is avoided, the method is not limited by processor architecture factors, the number of pipeline cycles is greatly reduced, and the execution efficiency is greatly improved; in a coding and decoding error correction link, a coding and decoding error correction task is distributed to an idle coprocessor based on a label, after a packet is matched with the label, the task is returned to a distribution link according to a first-in first-out principle, coding and decoding error correction is completed by a mechanism of'out-of-order completion and sequential submission ', and high-throughput parallel processing is realized on the premise of ensuring accuracy and orderliness. And the execution efficiency is further improved.

The invention mainly relates to the technical field of encryption communication, in particular to a 32-bit polar code compiling technology, discloses a method for reducing the calculation complexity and time delay of a 32-bit polar code codec and application thereof, and is suitable for short packet data communication (such as LoRa radio frequency chip physical layer frame header coding and decoding). According to the method and the device, the calculation of freezing bit nodes is avoided by finely adjusting the channel reliability sequence (for example, replacing a bit channel 16 with 20) based on the polarization weight structure and performing node cutting on the Trellis graph of the SC decoder. According to the method, the calculation complexity is reduced to 46% of that of an original scheme, the time delay is reduced by about 2 / 3, and under the condition that the bit error rate is slightly sacrificed (the BER is degraded by 0.3 dB), the BER gain which is about 1.8 dB compared with that of a Hamming code is achieved. According to the method and the device, the problems of high complexity and large time delay of a traditional polarization code in a short code length scene are solved, the communication reliability in a low signal-to-noise ratio environment is remarkably improved, and the method and the device are suitable for low-power-consumption Internet of Things equipment.

An arrangement for providing privacy in a communication network. In the arrangement privacy is applied in two steps, wherein the first part comprises using a Hamming code privatizing data in a network. After applying the Hamming code, it is determined how much additional differential privacy is required for fully privatizing the information. Then the information is fully privatized using a differential privacy method.

The invention relates to the technical field of semiconductor memory repair, in particular to a two-dimensional code encoding method and system for DRAM particle repair mapping. Comprising the following steps: determining a total block number and an allowable damaged block number, and setting a coding rule containing block state information and verification information; the to-be-tested particles are tested, and the positions of damaged blocks are identified; generating repair data according to a coding rule, and calculating a check byte by adopting an extended Hamming code; coding information is converted into two-dimensional codes and the two-dimensional codes are printed on the surfaces of the particles through laser; performing code scanning and reading on a production line, performing verification and error correction, automatically correcting a single-bit error, prompting a double-bit error to re-scan the code, and writing the code into a storage area; and reading the repair data from the storage area during application, performing verification and error correction again, and executing block mapping. Through a double-stage error correction protection mechanism, reliable transmission of repair data is ensured, and the particle utilization rate is remarkably improved.

The invention discloses a JPEG (Joint Photographic Experts Group) image multi-carrier steganography method based on a queen monkey evolutionary algorithm, which is used for embedding secret information into an image. Comprising the following steps that N images are processed according to a password input by a user and an error correction matrix H based on (7, 4) Hamming codes, N carrier images are obtained, the matrix of the ith carrier image is Hi ', and i = 1, 2,..., N; the secret information Secret to be embedded is converted into a binary form and encrypted to obtain a binary sequence M = (m1, m2,..., mL), and L is the length of the binary sequence M; and by taking the minimum difference between the carrier image feature set and the secret-carrying image feature set as a target, carrying out non-uniform dynamic distribution on the load size of each carrier image by adopting a monkey evolutionary algorithm, segmenting the secret information according to a distribution result, and writing the segmented secret information into the corresponding carrier image to obtain a secret-carrying image set. According to the method, the problem of efficient distribution of secret information among multi-carrier images can be solved, so that the secret-carrying images are detected at least.

The invention discloses a self-adaptive linear affine method for the lateral deviation characteristic of a vehicle tire, which belongs to the technical field of vehicle dynamics, and comprises the following steps: S1, collecting a tire lateral deviation data set, and solving plane characteristic parameters; s2, based on the plane characteristic parameters, determining mapping by using a clustering algorithm; s3, based on mapping, improving a support vector machine by using a Hamming code, and constructing a Hamming-SVM classifier; and S4, a Hamming-SVM classifier is used to complete the self-adaptive linear affine of the vehicle tire side deviation characteristic. According to the method, the fitting effect in the classification task is dynamically evaluated through self-adaptive logic judgment, the category number is automatically adjusted, the optimal classification performance is ensured, and the method is suitable for scenes with uncertain categories.

An arrangement for providing privacy in a 5G communication network. In the arrangement privacy is applied in two steps, wherein the first part comprises using a Hamming code, ordered such that adjacen

The application discloses a kind of storage security and reinforcement system and its implementation method, by the binary conversion and file separation of to-be-run program obtains instruction part and data part, after the encryption of instruction part is merged with data part, hamming code coding is carried out and is stored, when fetch instruction, processor finds out instruction part from memory and sequentially hamming code decoding and decryption are obtained to-be-executed instruction, when access memory, processor finds out data part from memory and decodes to obtain to-be-accessed data, simultaneously still can to to-be-accessed data hamming code coding is re-stored in memory after entering.The application overcomes the problems of large performance loss, easy to be destroyed, no actual protection to the instructions in memory and the insufficient error correction ability of traditional hamming code in traditional instruction randomization method, improves the security and reliability of instructions and data in memory, and can be widely applied in the field of data processing technology.