207 results about "Code redundancy" patented technology

The invention provides a fountain code compiling method based on deep space communication environment. The method comprises the following steps of: A) dividing information bits to be transmitted to form a plurality of original information groups; B) performing fountain coding on the original information groups to form code groups; C, performing concatenated error correction coding on the code groups, and transmitting the code groups to a receiver by using a deep space channel; D, performing concatenated error correction decoding to recover the code groups; and E, after enough code groups are obtained, performing fountain decoding to recover all the original information groups. In the method, partial randomness in a conventional fountain coding process is limited for the characteristics of the deep space channel so as to effectively reduce coding redundancy overhead and directively solve the problems of limitations to the transmission power and memory space of fountain codes in a deep space environment on the premise of not changing original degree distribution.

A system and method for achieving enhanced e-fuse programming reliability. By providing an e-fuse device with redundantly coded fuse structures each with a differing fuse size dimension, reliable encoding of a fuse with a programmed bit is enhanced. That is, for each e-fuse device, each of the multiple fuse structures and a corresponding programming devices associated with each fuse structure is dimensioned to achieve the coding redundancy such that one fuse structure of the multiple fuse structures provides for a current flow of sufficient current density to ensure programming reliability of the e-fuse device. In one embodiment, each the corresponding programming transistor device is of substantially identical size and, each fuse structure of the multiple fuse structures is of a different size. Alternately, each fuse structure is of substantially identical size and each programming transistor device is of a different size, thereby ensuring reliable coding over a programmed current range.

High efficiency video coding (HEVC) enhancements are described for intra-block copying for reducing motion vector (MV) coding redundancy and enhancing in range extensions (RExt) by selecting a default block my predictor. In reducing MV data redundancy, the value of MVx and / or MVy can have a baseline at the width (W), or height (H) of the respective block, whereby fewer bits need to be encoded. One embodiment for enhancing RExt provides an improved selection of a default block vector predictor for the first CU performing intra-block copying in a CTU.

The invention provides a data authority control method and a data authority control system based on RBAC (role-based access control) model extension and relates to the technical field of computers. The method includes: configuring corresponding relation of user objects and attributes and corresponding relation of the attributes with resource classes; and configuring corresponding relation of the resource classes with aspect classes. Based on the configurations, a data authority control process includes: when a user object of a login system sends an access request for requesting access to a resource class, intercepting the access request through the aspect class corresponding to the resource class; extracting attribute information of the user object to be assigned to a first object of the resource class by the aspect class according to the required attribute information corresponding to the resource class; and acquiring a data result set from a database by the resource class according to the attribute information of the first object. The method and the system aim at that service logic of resources is completely separated from data authority, flexibility of the system aiming at data authority control is improved, and the method and the system are high in expansibility, low in code redundancy and space-saving.

The invention provides a method and a system for storing synchronous data in distributive network equipment. The storing method comprises the following steps of: (1) respectively building distributive databases of unified storage engine interfaces on a primary main control card, a standby main control card and a service line card; (2) storing the synchronous data by the distributive database of the main control card through invoking the unified storage engine interfaces after the unified storage interfaces provided for an application program module receive the synchronous data; (3) sending the synchronous data to the standby main control bard and the service line card after the distributive database of the primary main control card completes the storage of the synchronous data; and (4) storing the synchronous data through invoking the unified storage engine interfaces after the distributive database of the standby main control card or the service line card receives the synchronous data of the primary main control card. In the method provided by the invention, the invoking of the unified storage engine interfaces by the distributive databases on the main control cards and the line card in the distributive network equipment is realized, the unified storage of heterogeneous data is realized, the implementation details are shielded, the code redundancy is reduced, and the transportability of the codes is improved.

The invention discloses a method and a device used for detecting similarity between source programs. The method includes the following steps: two source program files are respectively optimally decoded to generate two binary files; the two binary files are disassembled to generate two assembly code units; decision function is adopted to calculate the two assembly code units to define the similarity between two source programs. The method can eliminate trouble caused by advanced plagiarism means such as code redundancy, sentence splitting and constant displacement, etc. on a program semantic level by the execution of optimal decoding and disassembling.

The invention discloses an adaptive frame size calculation method for multiple hop transmission of video. The method comprises the following steps that (1) when sequential data of an intra coded frame (frame I) and an interframe coded frame (frame P) of the video in a cache region reaches a group of picture (GOP), a sending end begins transmitting LT coded data by an initially set frame size L, and waits for the feedback of a receiving end; (2) the receiving end counts the received data packet loss according to a computational formula for wireless transmission packet loss, and feeds an error rate value back to the sending end; and (3) the sending end comprehensively considers the influence of a frame size under the current channel quality on transmission packet loss, transmission efficiency and forward error correction coding redundancy according to the feedback error rate, and selects the optimal frame size as the data fragment length of the next transmission period. By the invention, relationships of payload data length, transmission packet loss and a channel working mechanism are comprehensively considered, the sending end and the receiving end are interactively matched, the frame size is adaptively calculated and regulated according to the feedback channel quality and the hop count of a target node, and the transmission efficiency of multiple hop transmission of video is ensured.

The invention discloses a data synchronization device. The device comprises a memory and a processor, wherein a data synchronization program capable of running on the processor is stored on the memory. Execution of the program by the processor comprises the steps that when an update request is received, synchronization data corresponding to the update request is acquired, and synchronization taskscorresponding to the synchronization data are established; the synchronization tasks are added into a task queue, and the synchronization data is stored into a cache region after being associated with the synchronization tasks; and when it is detected that the storage amount of the synchronization data cached in the cache region reaches a first preset threshold or the quantity of the tasks in thetask queue reaches a second preset threshold, threads in a thread pool are started to process the synchronization tasks in the task queue, so that the synchronization data stored in the cache regionis sent to an external management system. The invention furthermore provides a data synchronization method and a computer readable storage medium. Through the data synchronization device and method and the computer readable storage medium, code redundancy is reduced, and data synchronization efficiency is improved.

The invention provides a forward error correction feedback information transmission method and device. The forward error correction feedback information transmission device receives a media data packet of an opposite terminal, determines the packet loss rate, generates forward error correction feedback information for the packet loss rate and packages the forward error correction feedback information to the media data packet, wherein the media data packet comprises media data sent to the opposite terminal; and then the forward error correction feedback information transmission device sends the media data packet to the opposite terminal, and therefore the opposite terminal can conduct corresponding forward error correction control processing according to the forward error correction feedback information in the media data packet. The problems that when forward error correction feedback is conducted according to an RTCP, forward error correction coding redundancy adjustment and data recovery are slow, and the user experience is poor can be effectively solved; and the effects of adjusting forward error correction coding redundancy in real time, accelerating data recovery and improving the user experience are achieved.

The invention provides a self-adaptation data storage and reconstruction method for a coding redundancy storage system. The self-adaptation data storage and reconstruction method includes the following steps: (1) a client terminal calculates a Hash value of a file to be stored and uploads the Hash value to a server terminal; (2) the Hash value of the file to be stored is compared with Hash values of files already stored in the server terminal; (3) if the Hash value equal to the Hash value of the file exists, the server terminal does not accept uploading of the file to be stored, if the Hash value equal to the Hash value of the file does not exist, the server terminal accepts uploading of the file to be stored, the uploaded file is partitioned, Hash values of the file partitions are calculated and stored, and the file partitions are encoded to generate verification data partitions. Compared with the prior art, the self-adaptation data storage and reconstruction method has the advantages that the Hash value of the file to be stored and the Hash values of the file partitions are recorded, the corresponding file storage and reconstruction method is selected according to conditions of the system and the client terminal, and therefore network bandwidth pressure and calculation pressure, caused by data reconstruction, on a data center are reduced.

A method for forward error correction (FEC) includes obtaining information on a type of a current frame, where the current frame includes a key frame and a non-key frame; determining a coding redundancy of the current frame according to the type of the current frame and a redundancy coding strategy, where the coding redundancy of the key frame is greater than that of the non-key frame; and using the determined coding redundancy to generate an FEC code for the current frame. The method is applicable to circumstances where FEC is performed for media data of various coding formats.

The invention discloses a mobile terminal, which comprises a first Wi-Fi module, a second Wi-Fi module, a Wi-Fi application module and a Wi-Fi processing module, wherein the Wi-Fi processing module is used for receiving a connecting command generated by a user when the Wi-Fi application module triggers Wi-Fi hotspot connecting operation, and transmitting the connecting command to the first Wi-Fi module and / or the second Wi-Fi module; the first Wi-Fi module and / or the second Wi-Fi module are / is used for being connected to a Wi-Fi hotspot according to the connecting command; the Wi-Fi processing module is used for configuring a single data access router or dual data access routers according to current states of the first Wi-Fi module and the second Wi-Fi module when the Wi-Fi hotspot is successfully connected. The invention further discloses a Wi-Fi control method. The mobile terminal and the Wi-Fi control method can reduce code redundancy without increasing load of an operating system.

The invention provides a trans-technology stack web fore-end developing system and method based on micro service. The system comprises a micro service platform and a plug-in set, wherein the micro service platform comprises a plurality of web fore-end functional modules, each web fore-end functional module is used for the recognizing and loading of different web technology stacks when products aredeveloped, a service logic code and / or view UI which can achieve specific functions is packaged in each web fore-end functional module, the plug-in set comprises a plurality of plug-ins, and each plug-in is used for the recognizing and calling of different web technology stacks and loading the web fore-end functional modules according to the plug-ins. The method comprises the steps of micro service platform construction, plug-in set construction and custom tag recognizing and calling through the plug-ins. By means of the system and the method, the problems of the increasing of workload of product developers, the increasing of maintenance cost, failing of synchronous upgrading of functions of products, code redundancy and like caused by different normative bodies exist in different web technology stacks are solved.

The invention relates to a file transmission method in deep space communication and belongs to the technical field of deep space communication. According to the method, the predetermined coding redundancy is used for carrying out fountain coding on file data grouping, then, the sending is carried out through a link, a mode that a sending end actively stops is adopted, the one-step successful transmission probability of files is improved, the file transmission efficiency is improved, the bandwidth waste in large delay deep space communication environment caused by the passive stop of the sending end is avoided, and the link utilization rate is improved; and meanwhile, a reliable file transmission method in CFDP (CCSDS (consultative committee for space data system) file delivery protocol) is combined, the contents of a file data PDU (protocol data unit) and the contents of an NAK (negative acknowledge) PDU are defined, the reliable transmission of deep space files on the basis of the fountain coding is realized, and good protocol compatibility and practicability are realized.

The present invention discloses a method for recovering lost media data packets, and the method includes: a stream media server sending and buffering a media data stream; a client receiving and buffering the media data stream, and sending a negative-acknowledge (NACK) message to the stream media server when the client detects that the buffered media data stream has lost media data packets, the stream media server setting forward error correction (FEC) coding redundancy and acquiring the media data packets needing to be recovered from the media data stream buffered in itself, encoding the media data packets needing to be recovered into FEC data according to the FEC coding redundancy, and sending the FEC data to the client; with combination of the received FEC data and the media data stream buffered in the client itself, the client recovering the lost media data packets in the media data stream.

The invention discloses an interface rule checking method, a device, a computer device and a storage medium. The method comprises the following steps of: obtaining an access request, wherein the access request carries a reference and an access address, and the access address corresponds to an access mark; Obtaining an imitation object corresponding to the access identifier according to the accessidentifier, and obtaining interface information according to the imitation object; Obtaining an interface ID from the interface information, and obtaining a verification rule set corresponding to theinterface ID from a database based on the interface ID; adopting a Verification rule set verify the incoming parameters, obtaining the incoming parameter verification result, and sending the incomingparameter verification result to a client; Obtaining an operation request fed back by a client end based on an incoming parameter checking result, and if the operation request is an operation requestto continue processing, executing a service logic corresponding to an access identifier based on the incoming parameter, and obtaining an outgoing parameter corresponding to the incoming parameter; adopting Verification rule set to verify the parameters, and the results are obtained; realizing the standardization of verification rules and reduce code redundancy.

A method and related system of constructing multidimensional constellations whose shape remains invariant despite multiplicative distortions inherent to fading channels, and which provide a means for introducing coding redundancy to a signal without affecting the spectral efficiency of that signal is provided. Specifically, a method is provided for expanding multidimensional constellations, to enable coding redundancy without decreased spectral efficiency, in such a way as to guarantee that the shape will be preserved in fading.

The invention discloses an intelligent photo-electrical direct reader, comprising a single chip, a communication interface component, a DC supply component, and a plurality of photo-electrical sensingdecoder components, which are composed of plural pairs of photo diodes and light-emitting tubes, plural photo-electrical sensor components; an RC vibrator in the single chip is used as a system clock, the method of modifying an OSCCAL register data which is used for marking the RC vibrator is used for marking the RC vibrator, the photo diode and the light-emitting tube of each photo-electrical sensor component are supplied by the port of the single chip independently, the public end of the photo-electrical pair tube at the position corresponding to the photo-electrical sensing decoder components is controlled by the port of the same single chip, the measurement data (ADC) is processed by concrete quantized method, the external light of the photoelectric sensor as well as the electric property state of the actual measured sensing signal and the pair tube of the photoelectric sensor are scanned and measured, '0' and '1' logic level comparison threshold values can be adjusted dynamically, when the state of the photoelectric sensor is wrong, the code redundancy compensation algorithm can be initiated to correct the data, after the data information is processed by validation algorithm,different addresses are stored as back-up; the direct reader of the invention has the characteristics of high disturbance resisting capacity and low cost.

The invention relates to an insurance policy information correction method and a device. The method comprises steps of receiving an insurance policy correction request sent by a terminal, wherein the insurance policy correction request comprises an insurance policy identifier, a correction factor identifier and correction information corresponding to the correction factor identifier; detecting whether a correction factor corresponding to the correction factor identifier is an insurance premium change factor, and if yes, using the correction factor as a target insurance premium change factor; searching a preset insurance premium change calculation formula corresponding to the target insurance premium change factor, and according to the correction information, determining an input value corresponding to the insurance premium change calculation formula; substituting the input value into the corresponding insurance premium change calculation formula for calculation so as to obtain a first insurance premium change value corresponding to the target insurance premium change factor, and determine a second insurance premium change value corresponding to the insurance policy identifier according to the first insurance premium change value; and according to the second insurance premium change value, carrying out insurance premium correction processing. According to the invention, code redundancy is avoided and system performance is improved.

The embodiment of the invention provides an image compression method and a system based on a generated countermeasure network. Tranining data is obtained. The training data includes an original imageand a corresponding compressed image. According to the training data, the generated network and discrimination network are trained. The image generation network model is obtain. The image to be compressed is inputted into the image generation network model for compression and reconstruction. Compared with the traditional image compression algorithm, the invention utilizes the generation type confrontation learning method to train the generation network and the discrimination network, optimizes the parameters of the generation network, and obtains the image generation network model. The image can be compressed quickly by using the image generation network model. Compared with the compression algorithm based on coding redundancy, the compression and reconstruction speed is faster. Compared with the compression algorithm based on spatial redundancy, the similarity between the compressed image and the original image is higher.

The invention discloses a data binding method and device, a storage medium and equipment, belonging to the technical field of network. The method includes the steps of obtaining at least one monitoredobject of the first software component, wherein the first software component is a view or a data model, and the monitored object is a data parameter of the view element or the data model; determiningthe condition that at least one monitored object is associated with the same function, and binding the at least one monitored object to the same monitored object; determining that the monitored object whose attribute data is updated exists in the at least one monitored object, and sending a notification message to the monitored object, wherein the notification message carries the updated attribute data; and invoking the monitored object to synchronously update a second software component logically associated with the first software component based on the updated attribute data. The inventionbinds a plurality of monitored objects to the same monitored object, realizes unified monitoring, effectively reduces code redundancy in code realization, and greatly improves development efficiency.

The invention relates to an aspect orientation-based component base building method, belonging to the technical field of software engineering. The method is characterized by comprising the following steps of: inputting a source code into a source code information base; analyzing code information of the source code information base, and extracting class in the code information; analyzing class information in the code information, and separating the core function of the class from the crosscutting concern function by a weaving mechanism; carrying out semantic reasoning by a semantic rule base and an aspect rule base to query components; and sequencing and evaluating a search result, and recommending the components to users according to the query matching degree. According to the aspect orientation-based component base building method, an object-oriented code structure is converted into an aspect-oriented code structure, so that the crosscutting concern of the system can be componentized, the reusability of the code can be improved, and the system is small in code redundancy, and is easy to understand, maintain and expand; and according to the semantic reasoning-based query mechanism, an aspect component base can be flexibly evolved along with the domain knowledge.

The invention relates to an embedded distributed system data synchronization method and a embedded distributed system, and the method comprises steps that: an information synchronization code base which is used for releasing and synchronizing data is built on an inter-process communication layer of the embedded distributed system; a program with data source disposed in the embedded distributed system releases data by the information synchronization code base; and a program with data to be synchronized in the embedded distributed system synchronizes the data released by the program with the data source disposed by the information synchronization code base, thus generating mirror image data. The system comprises the program with the data source disposed, the program with the data to be synchronized and the information synchronization code base comprising a server interface, a server end, a client interface and a client end. By the establishment of the information synchronization code base and the adoption of the information synchronization code base for data synchronization, a unified data synchronization mechanism can be achieved, the code redundancy can be greatly reduced, and maintainability and scalability of the data synchronization mechanism can be improved.

The present invention discloses a programming language code duplicate checking method based on tree and sequence similarity. The method comprises: preprocessing two pieces of to-be-compared program codes, including removing text information such as annotation information, console output statements, operators and the like, and determining valid duplicate checking content; establishing a tree according to the control structure of the program, and recording positions of variables in each leaf node in the tree; establishing a sequence of relative positions of the variables in each leaf node, finding similar variables between functions based on the sequence, and then finding out similar leaf nodes; and finally determining the similarity between the two pieces of codes. According to the method disclosed by the present invention, the influence of some irrelevant information on the check result is removed, and the method has a better duplicate checking effect for the problems of renaming the variables and modifying the function position and the code redundancy; and a corresponding code duplicate checking system can be developed based on the method of the present invention, the code duplicate checking efficiency can be improved, and the system can have a better effect for college computer programming teaching.

The invention discloses a data packet transmission method and a device, and belongs to the technical field of an internet. The method comprises that: at least one data packet to be sent is acquired, and RS code redundancy is acquired; number of redundant packets is confirmed according to the acquired RS code redundancy; the data packets to be sent are encoded on the basis of an RS algorithm according to the number of the redundant packets and the number of the data packets to be sent so that the encoded data packets are obtained; and the encoded data packets are sent to a receiving terminal. The number of the redundant packets can be confirmed according to the acquired RS code redundancy. After the data packets to be sent are encoded on the basis of the RS algorithm according to the number of the redundant packets and the number of the data packets to be sent, the obtained encoded data packets are sent to the receiving terminal so that packet loss data can be recovered according to any data packets in the received data packets sent by a sending terminal when packet loss occurs. Therefore, delay in recovery of the lost packets is short, recovery capability is high and data packet transmission is relatively high in reliability.

The invention discloses a communication method, device and system, equipment and a storage medium. The method comprises the following steps: encrypting a first preset random number set through a randomly generated first AES key to obtain a first communication ciphertext; sending the first communication ciphertext to a server, so that the server decrypts the first communication ciphertext through asecond AES secret key generated randomly; receiving a second communication ciphertext returned by the server, wherein the second communication ciphertext is obtained by encrypting a second preset random number set through a second AES key; decrypting the second communication ciphertext through the first AES key to obtain a first decrypted message; and if the first decryption message is the same as the random number field contained in the second preset random number set, performing encryption communication. According to the embodiment of the invention, the encryption of the selectable data ofthe server and the client is completed while the code redundancy is reduced, so that the confidentiality, the integrity and the authenticity of the communication and the data are ensured.

The invention discloses a full-screen playback method and a system for a previewing video in an Android application, which relate to the field of video playback in the Android application. The method comprises steps: a playback view is loaded in a list interface, the size is changed, and the video is played in the playback view; when the video needs to be switched to be played in a full screen mode in a playback interface, after the last one video picture played in the playback view is saved, the playback view is deleted; the memory occupied by the list interface is closed and released; a playback interface is built and displayed, the video picture is loaded in the playback interface, the size is changed, and the video is played in the video picture; when the video needs to be switched to be played in a previewing mode in the list interface, the video picture in the playback interface is deleted; the player and the playback interface are closed, and the memory occupied by the player and the playback interface is closed and released; and the list interface is built and displayed. In the case of video seamless switching, the memory occupancy rate can be reduced obviously, the fluency is good, the client experience is high, and code redundancy is not caused.

This invention discloses a method for configuring increment services under a component structure and a system making service logic permanent, in which, the method includes: editing components separating from service logic, determining a limit state processor of the service logic based on the service executing logic to decide the component executing logic of said limited state processor to store the logic flow of the determined limited state processor and turn them to files, which can increase expansibility and adaptability of the increment service.