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51results about How to "Fast encoding" patented technology
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Digital audio signal filtering mechanism and method
InactiveUS20050065780A1Good resultWell combinedTelevision system detailsSpeech analysisDigital audio signalsTransmission bandwidth
Essentially all of the processing parameters which control processing of a source audio signal to produce an encoded audio signal are stored in an audio processing profile. Multiple audio processing profiles are stored in a processing profile database such that specific combinations of processing parameters can be retrieved and used at a later time. Audio processing profiles are organized according to specific delivery bandwidths such that a sound engineer can quickly and efficiently encode audio signals for each of a number of distinct delivery media. Synchronized A / B switching during playback of various encoded audio signals allows the sound engineer to detect nuances in the sound characteristics of the various encoded audio signals.
Owner:MICROSOFT TECH LICENSING LLC
Digital audio signal filtering mechanism and method
InactiveUS6959220B1Promote resultsFast processingTelevision system detailsCode conversionDigital audio signalsAudio frequency
Owner:MICROSOFT TECH LICENSING LLC
Coding mode selection method for HEVC (high efficiency video coding)
ActiveCN103873861AReduce computational complexityImprove subjective qualityDigital video signal modificationTime domainComputer architecture
The invention discloses a coding mode selection method for HEVC (high efficiency video coding). The method comprises the step of prejudging CTU partition mode, CU coding mode and PU interframe coding mode in the HEVC according to the space and time domain features in the current coding image content, so the traverse quantity in the mode selection in an HEVC frame is reduced. The HEVC efficiency is improved under the premise of not influencing the image coding quality. The code stream output by the method accords with the HEVC standards, the coding mode selection can be realized by further combining the perception characteristic of the vision of a human eye, and the subjective quality of the coded image is improved.
Owner:SOUTHWEST JIAOTONG UNIV
Video encoding method for encoding P frame and B frame using I frames
InactiveUS20050238100A1Increase the compression ratioQuality improvementColor television with pulse code modulationColor television with bandwidth reductionPattern recognitionVideo encoding
This invention discloses a video encoding method for encoding P frames and B frames using I frames. The video encoding method includes: I frame encoding process, which generates encoded I frames and compressed I frames by intra encoding; and P and B frame encoding process, which generated encoded P frames and B frames using aforementioned compressed I frames.
Owner:NEWSOFT TECH CORP
High-speed LDPC code coder and coding method thereof
InactiveCN101699770AFast encodingImprove coding efficiencyError correction/detection using multiple parity bitsShift registerComputer architecture
The invention relates to a high-speed LDPC code coder and a coding method thereof, belonging to the technical field of mobile communication channel coding. The coder comprises a primary and a secondary coding circuits, a temporary storage module and a control module. The primary and the secondary coding circuits each include a feedback shift register and an exclusive or gate. The primary coding circuit may obtain an intermediate vector based on a check matrix and an information bit. The temporary storage module is a register bank. The coder is characterized in that the output ends of two branches of primary circuits are connected with the register input ends of two branches of temporary storage modules; the output end of the register in the temporary storage module after passing through the control module is connected with the input end of the feedback shift register of the secondary coding circuit; and the secondary coding circuit obtains a check bit based on the intermediate vector and the check matrix. The method realizes coding by directly using the information of the check matrix, wherein the intermediate vector is obtained firstly and then the check bit is obtained based on the intermediate vector and the information in the check matrix. The method has high coding efficiency and can be widely applied to the technical field of the mobile communication channel coding.
Owner:SHANDONG UNIV
Information correlation based opportunistic network data distributing method
InactiveCN101771964AStable interestTargetedRoad vehicles traffic controlNetwork topologiesCrowdsNetwork data
The invention provides an information correlation based opportunistic network data distributing method. The method comprises the following steps: dividing regions of an electronic map carried on a vehicle through specifically defined information format, abstract bus routes and station information, and simultaneously carrying out binary coding on the regions based on the division; ensuring that each route station acquires a unique code; summarizing interest information to form a vehicle interest list; calculating the correlation of social information through the interest list to drive information distribution; and transmitting the information to the region which is interested in the information. The method acquires priori knowledge through an active studying mode by using the characteristics of fixed bus routes and stable people interests in the region, drives data oriented distribution by using accumulated knowledge, improves the hit rate of information querying, and simultaneously reduces network load and message distribution delay.
Owner:BEIHANG UNIV
Image scene classification method based on multi-characteristic fusion
InactiveCN106778768AAvoid setting various parametersAvoidance thresholdCharacter and pattern recognitionClassification methodsSample image
The invention discloses an image scene classification method based on multi-characteristic fusion; the method comprises the following steps: firstly extracting image GIST characteristics, SIFT characteristics and PHOG characteristics; carrying out local constraint linearity coding for image SIFT characteristics, and pooling SIFT characteristic sparse coding so as to obtain a sample image SIFT characteristic sparse vector; cascading the sample image GIST characteristics, SIFT characteristics and PHOG characteristics so as to form the sample image final characteristic expression, and inputting the sample image final characteristic expression into a linear classifier for training; using said method to extract image expressions from to-be-classified images, and inputting the image expression into a trained linear SVM classifier so as to finish the classification work. The method can improve the classification precision, and can enhance the system robustness.
Owner:GUANGXI NORMAL UNIV
Real time fine flexible coding method based on H.264
InactiveCN101106695ASave coding timeSave code rateAnalogue secracy/subscription systemsDigital video signal modificationSignal-to-noise ratio (imaging)Granularity
The invention relates to a real-time fine granularity scalable encoding method based on H.264. According to the overall situation of current residual frames and the local distribution of current residual blocks, the invention finds singular points from the global analysis, makes the bit plane number wholly equilibrated through downward shift of the singular values, and makes corresponding upper shift at the decoding end; the invention determines all-zero blocks from the local analysis. The invention will use a 4*4 whole number transformation in the reinforced layer conversion fraction during encoding. Compared with the general FGS method, the complexity in the invention is obviously reduced, the video quality is higher, and the overall PSNR (peak signal noise ratio) change is smoother. Evidenced by experiments, compared with the FGS method of MPEG-4, when keeping a close code rate, the invention can increase the average brightness PSNR by 0.37dB, and increase the average encoding speed by 13.86fps, namely by 97 percent.
Owner:SHANGHAI UNIV +1
Polarization encoding method and apparatus based on semiconductor optical amplifier
InactiveCN101374024AEasy to decodeThe way of optical coding is simple and easyElectromagnetic transmissionNon-linear opticsUltrasound attenuationControl manner
The invention relates to a polarization encoding (PE) method based on a semiconductor optical amplifier (SOA) and a device thereof. The method uses the SOA to conduct polarization rotation, and realizes polarization encoding with power equilibrium by using the following three methods: (1) realizing power equilibrium through single channel attenuation by encoding with an electric control manner; (2) realizing polarization encoding with power equilibrium by using an optical-electric synchronous control manner; and (3) realizing power equilibrium through single channel attenuation by encoding with an optical control manner. Three corresponding polarization encoders are formed by using an orthogonal polarization encoding method based on the three encoding control methods. In the orthogonal polarization encoding method, S polarization state represents logic zero, and P polarization state represents logic one, and the powers of two orthogonal polarization optical pulses are same. The polarization encoders formed by using the inventive method have much faster encoding speed than conventional polarization encoders, and have the advantages of simple structure, convenient operation, and high practicability.
Owner:BEIJING JIAOTONG UNIV
Self-adaption entropy encoder
ActiveCN103200407AReduce computational complexityTake advantage of parallelismTelevision systemsDigital video signal modificationSelf adaptiveEntropy encoding
The invention discloses a self-adaption entropy encoder. A zero-run encoding module conducts self-adaption zero-run encoding on data to be encoded when input effective marking signals are effective, and run data and run effective marking signals are obtained after zero-run encoding; a non-negative mapping module enables the run data after the zero-run encoding to be mapped into a non-negative space from an integer range when the run effective marking signals are effective, and non-negative data and the non-negative effective marking signals are output after mapping is output; an index Columbus encoder order updating module receives an input sample zero index, the non-negative data after mapping, and the non-negative effective marking signals after mapping, context modeling is conducted on the non-negative data when the non-negative effective marking signals are effective, and reasonable index Columbus encoding orders of the non-negative data are calculated; and an index Columbus encoding module receives the non-negative data and conducts index Columbus encoding of the index Columbus encoding orders on the non-negative data when the non-negative effective marking signals are effective, and entropy encoding code stream and code stream effective marking information are obtained and output.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Encoding method for rapidly encoding gene character sequence into binary sequence
ActiveCN105550535AImprove encoding and compression efficiencyTakes up little storage spaceHybridisationSpecial data processing applicationsGeneSpeech recognition
The invention discloses an encoding method for rapidly encoding a gene character sequence into a binary sequence. The encoding method comprises the steps of: 1, taking out a specified number of character strings from a gene character sequence to be encoded and using the taken character strings as currently processed character strings; 2, shifting binary codes of the currently processed character strings right by one bit; 3, carrying out a data AND-operation on each character in the currently processed character string shifted right by one bit and 0x3; 4, respectively extracting and assembling two lowest bits in each character in a result after the data AND-operation to obtain a compact code binary sequence corresponding to the currently processed character strings; and 5, judging whether processing on the gene character sequence to be encoded is completed, skipping to execute the step 1 if processing is not completed, otherwise ending and exiting. The encoding method has the advantages of high encoding compression efficiency, high encoding speed, high encoding efficiency, no requirement for carrying out case change, flexible implementing mode and wide application range.
Owner:GENETALKS BIO TECH CHANGSHA CO LTD
Method and control device for controlling access of a computer to user data
InactiveUS20070198844A1Fast decodingFast encodingInternal/peripheral component protectionDigital data authenticationData accessBIOS
A method for controlling access of a computer to user data that are stored in a memory device includes calling up structure data of the memory device, by means of a BIOS, and accessing the user data on the basis of the structure data. The structure data are only transmitted to the BIOS after authentication of a user. There is a control device for controlling access to user data. Structure data of the memory device can be called up by a controller, on the basis of which the user data are accessible. A user can be authenticated upon a request for the structure data and transmission of the structure data is controlled by the control device. When a request for structure data is issued, an authentication routine for authenticating the user is first transmitted by the control device to the BIOS, and carried out on the computer.
Owner:UTIMACO SAFEWARE
Method for searching motion facing to panorama
InactiveCN101350921AFast encodingSame subjective reconstructed video qualityTelevision systemsDigital video signal modificationCoding blockMotion vector
The invention discloses a fast motion search method aiming at the panorama video, which comprises the following steps that (1) each frame of panorama video is divided into blocks which do not overlap, the sizes of the blocks is16*16,16*8, 8*16 and 8*8; (2) initial motion search is implemented on the present block; (3) the present block is determined whether to be the inter-frame coding block with zero-motion vector; (4) as for the blocks with the sizes more than 8*8, a threshold method is used for determining whether the blocks need to be divided into ones with sizes less than 8*8. The invention has the advantages that a fast motion search method which is suitable to code the panorama video is designed aiming at the features of panorama video; compared with the traditional motion search method, the invention can save more calculation time, and at the same time, the panorama decoding efficiency can be maintained.
Owner:BEIJING HUACHEN GUANGZHENG TECH DEVCO
Distinguishability self-adapting node tree encoding method of JPEG (joint photographic experts group) 2000
InactiveCN102724508AOvercoming the disadvantage of being too complexFast encodingTelevision systemsDigital video signal modificationCoding blockRelationship - Father
The invention discloses a distinguishability self-adapting node tree encoding method of a JPEG (joint photographic experts group) 2000. The distinguishability self-adapting node tree encoding method comprises the following steps of: (1) inputting a coding parameter; (2) outputting coding block information; (3) controlling circulation; (4) depositing node information of all levels of the current sub belts; (5) judging whether the current sub belt contribution finishes; (6) carrying out current contribution; (7) carrying out current sub belt coding; and (8) storing a code result after separation. The encoding method provided by the invention can carry out compressed encoding of a distinguishability image at will in a certain scale in a self-adapting manner, and uses each level father node sole stored manner in a contribution manner; and a coordinate value of a leaf node during encoding is utilized to calculate the stage number when initiating encoding, an address calculation method is simplified, the defects that a clock resource is wasted because whether a labeling node is encoded are overcome, and the coding efficiency is improved. The distinguishability self-adapting node tree encoding method provided by the invention is used for compressed encoding of different digital image chips.
Owner:XIDIAN UNIV
Coding parameter adaptive adjusting method based on Monte Carlo method Markov chain
ActiveCN108600756AImprove performanceFast encodingDigital video signal modificationMarkov chainCritical condition
The invention provides a coding parameter adaptive adjusting method based on a Monte Carlo method Markov chain. Initial coding parameter evaluation is conducted, the influences of coding parameters onthe performances and the coding time are analyzed, and the coding parameters which are closely related to the coding performances and the coding time are screened out; the parameters are classified according to the influences of the coding parameters on the coding time and the coding performances; and in the range of the specified coding complexity, configurations of various parameter combinations are randomly selected and used for conducting coding, state jumping is conducted when a certain critical condition is met, and the better parameter combination is selected to replace the current parameter combination. According to the method, the near-optimal coding parameter configuration is acquired on the premise that not all coding parameter combinations are traversed. The method is suitablefor optimization of coder level parameter adjusting, the coding performances of the high-complexity coding parameters are acquired by using the coding parameters with the low-complexity configuration, or the better coding performances are acquired under the same coding complexity condition.
Owner:SHANGHAI UNIV
A Kalman filtering-based method for signal reconstruction in complex environments
ActiveCN105375931AEasy to storeSimplify the coding processCode conversionComputation complexityEstimation methods
The invention relates to a Kalman filtering-based method for signal reconstruction in complex environments and solves the problems of high computation complexity and low efficiency in the prior art. The method comprises the steps of performing quick compression on signals, designing a sparse measurement matrix and obtaining measurement values through compression measurement in a complex environment; establishing a prior model of the signals, inputting the sparse rate of a signal and establishing the prior model of the signal; performing a belief propagation calculation on a bipartite graph; obtaining initial values of signal estimation by using approximate MMSE estimation; obtaining signal estimation values by using Kalman filtering. The simple sparse measurement matrix is used and the storage of the measurement matrix is simplified; during signal reconstruction, the bipartite graph and the Kalman filtering-based signal estimation method are used, so that a coding processing of compressive sensing is simplified and the reconstruction precision is improved.
Owner:ANHUI UNIVERSITY
An image reconstruction system based on cross array of memristors
ActiveCN109448068AReduce power consumptionFast data processingImage enhancementImage analysisENCODEHardware implementations
The invention discloses an image reconstruction system based on cross array of memristors, including an image input processing module, a sparse encode module and an image output processing module, wherein the sparse encoding module comprises a first memristor cross array, a calculation conversion unit and a second memristor crossover array. The system realizes the image pixel dictionary set through two memristors crossing arrays, and the sparse coding is performed based on the two memristor crossover arrays to realize image reconstruction. Because the memristor consumes very little power, theoverall power consumption of the system is reduced compared with the existing schemes. In addition, the memristor processes data quickly, and the size of the nano-memristor cross-array is small, whichis easy to integrate, and the important vectors in the sparse coding can be realized efficiently and conveniently, so that the coding speed is faster, the efficiency of the system is improved, but also a valuable reference direction is provided for large-scale hardware implementation.
Owner:SOUTHWEST UNIVERSITY
Large-scale target identification method based on mobile platform
ActiveCN104391987ACalculation speedEasy transferCharacter and pattern recognitionSpecial data processing applicationsHash functionScale-invariant feature transform
The invention belongs to the field of image recognition and aims to provide a quick and effective large-scale target identification method based on a mobile platform for mobile platform search, and the method can be used for quickly and effectively encoding SIFT (scale invariant feature transform) characteristic points into binary codes with a function of keeping local sensitivity by a Hash algorithm. The method comprises the following steps: obtaining label information of SIFI characteristics X of a database image, wherein the label information consists of '0' and '1'; defining normalized distance similarity and quantization errors; searching a binary label of a data point with minimum value of the sum of NS and MD; obtaining weak Hash functions; combining the weak Hash functions to obtain a strong Hash function. The method is a quick and effective mobile platform search method; the search scheme of mobile equipment can be adjusted according to network conditions, so that responses can be given in time under different network conditions.
Owner:JILIN UNIV
Transmission control method based on random linear network coding
InactiveCN104683070AReduce complexityFast encodingError preventionInternet protocol suiteNetwork code
The invention discloses a transmission control method based on random linear network coding and mainly solves the problems of large time delay of a transmission control protocol (TCP) under a high-bit error rate link and decrease of throughput. The transmission control method comprises the following realization steps: (1) adding network coding (NC) layers between a transmission control protocol layer and an internet protocol (IP) layer which are respectively at the transmitting end and the receiving end; (2) performing grouping random linear network coding on data packets of the transmission control protocol through the network coding layer at the transmitting end and transmitting to the internet protocol layer at the local end; (3) receiving the coded data packets from the internet protocol layer at the local end through the network coding layer at the receiving end, wherein the data packets are subjected to response and grouping decoding in sequence and are submitted to the transmission control protocol layer. According to the transmission control method, the network throughout capacity under the high-bit error rate link is effectively improved, and the effect of round-trip delay of the link on the transmission control protocol performance is reduced.
Owner:XIDIAN UNIV
Storage system establishing method capable of repairing single disk quickly
ActiveCN104809035AImprove reliabilityFast repairRedundant operation error correctionDisk arrayComputer engineering
The invention discloses a storage system establishing method capable of repairing a single disk quickly. The storage system establishing method is characterized by comprising a disk sub-array composition table establishing step, a disk area dividing and area internal encoding step, a disk sub-array establishing step and a storage system repairing step. According to the storage system establishing method, a single bad disk is repaired by utilizing a plurality of disks in parallel, so that single disk repairing can be completed quickly by the storage system; a group of area internal codes are added to each area, so that the storage system can tolerate any three disk faults; when a single disk fault is caused, the single disk is repaired by only utilizing inter-area encoding; when a plurality of disk faults are caused, the disk is repaired by utilizing the intra-area encoding and inter-area encoding. Compared with a traditional storage system establishing method, the single disk repairing speed can be improved by several times by adopting the method disclosed by the invention; meanwhile, the read degradation performance of the storage system is improved, and the system reliability is improved.
Owner:UNIV OF SCI & TECH OF CHINA
Fast algorithm adaptive interpolation filter (AIF)
InactiveUS20120044988A1Avoid calculationIncrease the amount of calculationColor television with pulse code modulationColor television with bandwidth reductionMotion vectorFast algorithm
An apparatus and method are taught for estimating an optimized sub-pixel interpolation filter using iterative and non-iterative estimations as needed for sub-pixel motion compensation and motion estimation in a video codec for improving coding efficiency. Motion vector information and mode decisions are passed from the first encoding stage which uses predetermined interpolation to at least a second encoding stage which uses an estimated adaptive interpolation filter determined during the first encoding stage. Processing overhead is reduced within the subsequent stages. Embodiments are described in which additional stages perform iterative encoding and estimation of interpolation filter in an n-th iteration.
Owner:SONY CORP
Dynmaic configurable code clustering method based on network
InactiveCN1980398AQuick codingEasy and intuitive operationPulse modulation television signal transmissionTransmissionMultiplexingComputer architecture
The method includes steps: (1) building cluster environment for scattering devices; (2) building configurable distributed encoding model; (3) building and locking cluster to be encoded, and based on the cluster to be encoded, dividing up audio and video sources, and building task processes; (4) building task links to all computers in cluster to be encoded respectively, and sending task flow and task instructions to build whole dispatching and controlling environment for cluster to be encoded, and to arrange and monitor all computer to implement appointed encoding task; (5) taking back encoded results, and after completing collection of the said encoded results, server connects results of divided encoded pieces in sequence based on frame number of first frame in divided pieces; then carrying out audio encoding and multiplexing operation to accomplish whole encoding procedure. Advantages are: simple and configurable platform, high level of resources utilization, quick encoding speed.
Owner:联合信源数字音视频技术(北京)有限公司
A method and system for multi-user joint verification relay cooperative communication
InactiveCN102281122AReduce decoding complexityReduce power consumptionForward error control useError prevention/detection by diversity receptionComputer scienceDemodulation
A method, system and device for multi-user joint detection in a relay and cooperative communication are disclosed, wherein the method includes the following steps: user terminals transmit modulated signals to a relay node and a destination node; the relay node performs a symbol-layer demodulation to the modulated signals received from the multiple user terminals by means of demodulating only one symbol of each user terminal every time, obtains the demodulated estimation sequence of data signals of the multiple user terminals, performs a convolutional encoding and outputs the checking data which are transmitted to the destination node after modulation; the destination node performs a symbol-layer demodulation to the modulated signals received from the multiple user terminals by means of demodulating only one symbol of each user terminal every time, demodulates the checking data modulated by the relay node, performs a decoding after combining the demodulated checking data with the demodulated data of the multiple user terminals, and outputs the decoded data.
Owner:ZTE CORP
Operation classification coding method based on original operation data
InactiveCN111191415ASolve the problem of inconsistency in standard surgical codesUnified standardNatural language data processingNeural architecturesMedical recordInformatization
The invention relates to the technical field of medical informatization and the technical field of artificial intelligence, in particular to an operation classification encoding method and system based on original operation data. The method comprises following steps: recieving orginal operation data; preprocessing the input original operation data; carrying out retrieval and judgment by using an international operation standard classification code ICD-9-CM-3; inquiring a hospital admission record, a disease course record and a hospital discharge record; and encoding according to the preprocessed original operation data and the acquired information in the medical record of the patient by using a bidirectional operation data entity identification model and a neural entity weight relationshipdiscrimination network, and outputting an encoding result and an accuracy evaluation result. Compared with manual coding, automatic coding is more efficient and faster, classification is stable, large-batch coding and classification of original medical records can be achieved in a short time, and data can be quickly prepared and sorted for big data application and artificial intelligence in the medical field.
Owner:SHAN DONG MSUN HEALTH TECH GRP CO LTD
Polarization encoding method and apparatus based on semiconductor optical amplifier
InactiveCN101374024BEasy to decodeThe way of optical coding is simple and easyElectromagnetic transmissionNon-linear opticsUltrasound attenuationSynchronous control
Owner:BEIJING JIAOTONG UNIV
Multi-track absolute grating scale image coding and decoding method
InactiveCN105973287AWide range of encodingSimple structureConverting sensor output opticallyProgramming languageGrating
The invention discloses a multi-track absolute grating scale image coding and decoding method. The coding method includes the steps of employing a searching algorithm to encode the multiple information of a multi-track absolute grating scale to obtain the multiple information code of the multi-track absolute grating scale, wherein the searching algorithm can encode with maximal same sub-string length as a characteristic and can flexibly adjust the coding quantity and coding scope, decomposing the multiple information code of the multi-track absolute grating scale to multiple binary code tracks, conducting position coding on the binary code tracks to obtain a corresponding binary code track code, adding labels to the code words of the binary code track code to obtain a final code, and compiling each code word and positional information of the final code into a table for storage. The method is simple and highly effective, the coding is wide in scope and can be flexibly adjusted. Decoding can be done in high speed and high accuracy. The method is widely applicable to the coding field.
Owner:GUANGDONG UNIV OF TECH
Video-based fast dynamic point cloud coding method and system
PendingCN112601082AImprove encoding qualityFast encodingDigital video signal modificationAlgorithmTheoretical computer science
The invention discloses a video-based fast dynamic point cloud coding method and system, and the method comprises the steps: obtaining a coding tree unit of a video frame, determining the block type of a CU through calculating an occupation graph in the coding tree unit, and enabling the CU to represent a coding unit; traversing the coding tree units by using a fast coding mode decision scheme todetermine a coding mode; and using the fast coding decision scheme for determining a coding mode in a mode of selectively skipping blocks by utilizing rate distortion optimization characteristics of different block types. The method has the advantages that compared with the prior art, the rate distortion optimization characteristics of different block types are researched to accelerate the encoding of geometric and attribute videos, so that the encoding efficiency is greatly improved; and the method has the characteristics of high encoding quality, high encoding speed and the like.
Owner:NANJING UNIV OF POSTS & TELECOMM
Dictionary-based improved fractal encoding underwater acoustic image compression algorithm
InactiveCN106815877AReduce the number of matchesFast encodingImage analysisImage codingUnderwater acousticsCompression ratio
The invention relates to an improved fractal coding image compression algorithm based on a dictionary, which belongs to the field of image compression and processing. Considering that the traditional fractal coding method takes a long time to encode, every time an image is encoded, a dictionary (also known as a codebook) must be regenerated on the basis of the original image. Different images have different dictionaries. Even for the same image, different segmentation methods are also To generate different dictionaries, the present invention adopts the fixed dictionary method to carry out fractal coding for the above problems, and improves the fractal coding algorithm from three aspects of dictionary generation, expansion and classification. The algorithm proposed by the invention has a faster encoding speed, and only one iteration is needed for decoding, which has an extremely fast decoding speed. In terms of compression ratio, it has significantly improved compared with previous algorithms.
Owner:QIQIHAR UNIVERSITY
Disk array construction method based on block coding
ActiveCN104615380AReduce update overheadFast encodingInput/output to record carriersBlock codeDisk array
The invention discloses a disk array construction method based on block coding. The disk array construction method based on the block coding is characterized by comprising disk partition steps, intra-block coding steps, interblock coding steps and fault-tolerant strategy formulation steps; four random disk errors can be contained in the disk array by adopting the construction method, when a single disk error occurs, the interblock coding is used for repairing; when multiple disk errors occur, the mixed repairing of the intra-block coding and the interblock coding are adopted. Compared with traditional disk array construction methods, The disk array construction method based on the block coding, on the premise of same fault-tolerant capability and redundancy rate, the total data amount read and the data reading amount of each disk are obviously decreased in the repairing of the single disk error, the network bandwidth is saved, the repairing speed is speeded up, and the system reliability is improved.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD +1
Waveguide optical coding device for optical ADC
InactiveCN101571658BFast encodingImprove performanceOptical analogue/digital convertersGratingTotal internal reflection
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
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