258 results about "Storage Problem" patented technology

A scalable content delivery network (SCDN) employs a parallel download mechanism to ensure that a demanded file is present at a station in time for user consumption. This mechanism is used in solving the content caching and storage problem for applications such as video-on-demand, which is commonly perceived as a tough problem in the industry. In the network, files are divided into smaller units called tracks according to the nature of data contained in each of them. Tracks are further divided into smaller equally sized units called block files. This division builds the foundation for parallel download. A sequence server provides a lock-free mechanism for multiple threads or processes to access data atomically. The sequence server allows clients to gain sequential access to data, or to find out whether the sequence has been violated so that they can retry their operation or take corrective action. Advantages of the invention include the ability to handle distribution of large files and process sequencing.

Preferred embodiment systems of the invention use a scalable number of cameras that can image a volume of interest from plurality of angles. The volume can be large and illuminated with general non-coherent illumination. Synchronized cameras process data in real time to addresses particle overlap issues while also increasing observable volumes. Systems of the invention also use higher frame rate cameras to increase the amount of particle travel in each frame. Approaches of the invention alleviate the concerns with additional data accumulation by conducting image processing and segmentation at the time of acquisition prior to transfer from a camera to eliminate a data transfer bottleneck between camera and computer and eliminate a data storage problem. A heterogeneous CPU / GPU processor cluster processes data sent from the plurality of programmable, synchronized cameras and conducting multi-camera correspondence, 3D reconstruction, tracking and result visualization in real time by spreading processing over multiple CPUs and GPUs. Systems of the invention be scaled to hundreds of cameras and fully characterize fluid flows extending to room size and larger.

The invention relates to a secure storage service system and method based on a TrustZone technology. The secure storage service system comprises a data request module, a common application program, a secure storage service and a trusted application program; the data request module is responsible for packaging and transferring a secure storage service request of data between the common application program and the trusted application program, and providing a unified service request interface for data storage, data loading and data destruction for the common application program; and the secure storage service comprises a legality detection module, a data processing module and a secrete key management module. The secure storage service system and method disclosed by the invention aim to provide the unified data secure storage interface for the application programs on terminal equipment supporting the TrustZone technology; therefore, the secure storage problem of sensitive data of the application programs can be solved; and furthermore, the development convenience of the application programs is ensured.

The invention discloses a blockchain encryption ledger based on secret sharing. The blockchain encryption ledger based on secret sharing comprises a key management module, an encryption data in-chainmodule and a ledger decryption module; the key management module is responsible for registration and key generation of a user; key segmentation is realized by utilization of a secret sharing technology; each node of the blockchain is responsible for cooperatively storing segmented key information; each node only can grasp incomplete key information; the encryption data in-chain module is responsible for processing the data uploading request of the user, and storing user encryption data passing signature verification in the blockchain ledger; the ledger decryption module is responsible for processing a ledger decryption request; only after the blockchain nodes reach a decryption consensus, a decryption key can be synthesized; and then, decryption of the encryption ledger is completed. According to the blockchain encryption ledger based on secret sharing disclosed by the invention, the user key security storage problem can be solved by utilization of the secret sharing technology; furthermore, the accidental leakage behaviours of a part of blockchain nodes on the privacy data of the ledger can be effectively avoided; the user key storage security is ensured; and furthermore, the credibility of the blockchain system is improved.

The invention relates to a safety cloud storage method for use in a multi-cloud environment and solves the safety storage problem of cloud data. The method includes data storage and data reading; data storage includes the steps of 1, data partitioning, 2, data deduplication, 3, data encoding, 4, data encrypting, 5, trans-cloud transmission management; data reading includes the steps of 1, metadata reading, 2, reading optimizing, 3, data reading, 4, data decrypting, 5, data decoding and 6, data assembling.

The invention provides a systemic solution aiming at the rapid clustered rendering of a multisource remote sensing data set, which is especially used for solving distributed organization and storage problems of data and union query problems of a plurality of data sets in mass remote sensing data and different kinds of data sets. The systemic solution comprises the following steps: firstly allocating a cluster environment suitable for a real-time mass remote sensing data rendering system, wherein the cluster environment is formed by a plurality of calculation and data integrating nodes and a central server; sending a tile rendering request of a client side to the central server through a network channel, carrying out the research, the sieving and the post-processing through the central server so as to obtain a visible data list within the tile scope, and determining the optimal node according to the storage position; reading the tiles corresponding to the data by the nodes, rendering the tiles to a canvas in an overlying mode one by one, and sending the results to the central server; and finally sending the results to the client side by the central server. The systemic solution provided by the invention is suitable for rendered grain on the two-dimensional or three-dimensional surfaces, and large scale application fields, such as visualization and the like in the production of the terrain tile production and the large-scale remote sensing data management.

A foldable wagon assembly movable between an open position and a folded position. A first hinge attaches the center and front sections and a second hinge attaches the center and rear sections. The front wheels are mounted beneath the front section and the rear wheels are mounted beneath the rear section. The distance from the lower surface of the bed to the points of contact of the front and rear wheels is equal to the center section width to establish the folded position (FIG. 9) with the front section and the rear section parallel to one another. The assembly is conveniently and easily convertible between an open position and a folded position making it promptly ready for use, transport, or storage and eliminates transportation and storage problems.

The embodiment of the invention provides a method for constructing a low density parity check (LDPC) code check matrix. The method comprises the following steps of: constructing an MB*NB dimensional basic matrix B, which generates code rate R and code length N, of the LDPC code, wherein MB is equal to M / K, NB is equal to N / K, M is equal to N(1-R), K is divergence ratio of the basic matrix and belongs to phi, and phi is a set of common factors of M and N; substituting a K*K matrix for elements in the basic matrix B; and expanding the basic matrix B to be an M*N dimensional check matrix H which is used for encoding or decoding the LDPC code. The embodiment of the invention also provides a method and a device for encoding the LDPC code. According to the technical scheme provided by the embodiment of the invention, the LDPC code with any code rate and excellent performance can be constructed. In addition, the technical scheme provided by the embodiment of the invention solves the storage problem of the check matrix and effectively reduces the implementation complexity of an encoder.

The invention discloses an Internet of things heterogeneous data storage method and a storage system. The internet of things heterogeneous data storage method comprises the steps that various types of data are stored in a column-based mode through an HBase distributed storage system, an MySQL metadatabase carries out registration management on the stored data, and finally the data access layer is configured in a centralized manner, so that applications based on the database can use the unified data interface. According to the Internet of things heterogeneous data storage method and the storage system, the unified storage mode is adopted through the unified data interface, the storage of different types of data and data from different sources is effectively supported; the column-oriented storage mechanism is extended by utilizing the HBase technology, so that the storage volume can be extended horizontally; the memory mapping file mechanism is adopted to effectively improve the storage and management efficiency of large files; and the data redundancy storage technology is adopted to greatly improve the system reliability and the accessibility. The Internet of things heterogeneous data storage method and the storage system can well solve the storage problem of various types of data, has efficient storage and utilization capability on large files, and is also low in cost and high in robustness.

The embodiments of the present invention provide a method of constructing parity-check matrix of LDPC code. The method comprises the following steps of: constructing a MB×NB base matrix B for an LDPC code with code rate R and code length N, wherein MB=M / K, NB=N / K, M=N (1−R), K is the expansion factor of the base matrix, Kεφ, and φ is the set of the common factors of M and N; and replacing the elements of the base matrix B with a K×K matrix, and expanding the base matrix B into a parity-check matrix H with size of M×N for the encoding or decoding of the LDPC code. An encoding method and apparatus of LDPC code are also provided by the embodiments of the present invention. The technical solutions provided by the embodiments of the present invention can construct LDPC codes with good performance, solve the storage problem of the parity-check matrix, and effectively reduce the implementation complexity of the encoding apparatus.

The invention relates to a biomass pyrolysis refining-grading directional conversion process. Based on the fact that the main chemical components (cellulose, hemicellulose and lignin, etc.) of biomass raw materials have different thermal decomposition characteristics, the present invention uses pyrolysis refining as the technical platform to propose a technology of gradient heating and step-by-step collection scheme, the pyrolysis products are graded and directed transformations as platform compounds. Among them, the water-soluble pyrolysis oil fraction has fermentation properties and can undergo selective biotransformation; the fat-soluble pyrolysis oil fraction is used to refine high-quality bio-oil, and the pyrolysis residue is used to prepare high-quality activated carbon or nano-silica. Biomass pyrolysis refining-graded directional conversion solves the problems of the use of a large number of enzyme catalysts and the difficulty of collecting, transporting and storing raw materials in the process of using biomass raw materials as energy. It is a high-efficiency and high-value utilization process of biomass.

The invention discloses a massive isomerous data storage method and system which comprises a client, a load balancer, a data loading server and a unified data management unit. The client is used for collecting and receiving user data and transmitting a data loading request to the load balancer. The load balancer is used for dynamically distributing the data loading server to the client. The data loading server is used for loading data of the client to a data storage node according to management information of a data management node in the unified data management unit. The unified data management unit comprises the data storage node and the data management node. By means of the method and system, large data containing structured data, semi-structured data and non-structure data can be loaded together, and effective combination and unified storage management of massive structured data, semi-structured data and non-structure data are achieved. Compared with a traditional structured database, the method and system solves the storage problem of the structured data and the non-structured data and effectively reduces data management cost.

The invention provides an integrated control method and system of a portal system and a computer device. The integrated control method of the portal system comprises a step of receiving an access request instruction of a service subsystem and obtaining credential information from the cookie of the access request instruction by using a permission package, a step of obtaining corresponding session data from session storage service of the portal system according to the credential information to carry out permission authentication, and a step of jumping to an access request page when the permission authentication is passed, otherwise, jumping to a login page of the portal system. Through the technical scheme of the invention, a universal portal system integration scheme including permission control and single-point login is realized, at the same time, by relying on the permission package, each service subsystem can be easily configured to access the portal system, the development workloadis greatly reduced, through the session storage service, the session storage problem under a cluster is solved, and the purposes of unified storage of the session and no perception to a user are achieved.

The invention discloses a symmetric and asymmetric hybrid data encryption / decryption method based on cloud computing. The method includes the steps of performing data encryption, to be specific, encrypting a public key by an AES (advanced encryption standard) symmetric encryption key and an RSA asymmetric encryption algorithm; performing data decryption, to be specific, decrypting a public-key ciphertext of the AES algorithm by the RSA asymmetric algorithm to obtain plaintext of data. Compared with the prior art, the method allows the safety data storage problem in cloud computing to be effectively solved and is applicable to encryption and decryption of big data.

A foldable wagon assembly movable between an open position and a folded position. A first hinge attaches the center and front sections and a second hinge attaches the center and rear sections. The front wheels are mounted beneath the front section and the rear wheels are mounted beneath the rear section. The distance from the lower surface of the bed to the points of contact of the front and rear wheels is equal to the center section width to establish the folded position (FIG. 9) with the front section and the rear section parallel to one another. The assembly is conveniently and easily convertible between an open position and a folded position making it promptly ready for use, transport, or storage and eliminates transportation and storage problems.

The invention provides a GOP data playback method, device and system. The method comprises the steps that after a server receives a on demand request from a client, if the client requests GOP sub-data in variable length GOP data, the server judges whether an I frame corresponding to the GOP sub-data has been sent; if so, the server sends the GOP sub-data to the client, the client decodes a critical P frame of the GOP sub-data according to the I frame corresponding to the GOP sub-data cached therein, and plays back the decoded GOP sub-data; and otherwise, the server sends the I frame corresponding to the GOP sub-data and the GOP sub-data to the client, the client caches the I frame, decodes the critical P frame of the GOP sub-data according to the I frame and plays back the decoded GOP sub-data. By adopting the GOP data playback method, device and system in the technical scheme provided by the invention, in an encoding mode of the variable length GOP data, accurate second-order retrieval of the GOP data is realized, and the crossing data unit storage problem of the GOP data is solved.

The invention provides a storage method of very large data. The method includes the steps of segmenting each stored piece of data according to predetermined attributes to obtain active data and dead data of the piece of data; storing and compressing the dead data; generating a database table of the active data, and storing the database table into different databases in a classified manner according to predetermined distribution strategies. The invention further provides a distributed database system and a retrieval method thereof. The storage method of very large data and the distributed database system and the retrieval method thereof have the advantages that the storage problem of large structured data is solved, consumption of storage resources is low, and the data can be retrieved fast.

The invention discloses a mass sensor data storage system based on HBase. The system and method for storing mass sensor data are designed based on the HBase distributed database cluster, the flow shunting is performed on a data receiving layer to avoid the condition of mass sensor data blocking under a high-concurrence scene; a pre-partitioning and table-establishing operation suitable for storing large-scale sensor data is performed on the HBase distributed database cluster, the data storage hotspot problem caused by the HBase distributed database cluster itself is avoided; an optimizing operation suitable for storing the large-scale sensor data is performed on line units and column names so that the mass sensor data can be continuously stored in the HBase distributed database cluster according to the features of the time sequence, and the scattered data storage problem is avoided. The storage of the mass sensor data based on the HBase is realized. And the system disclosed by the invention is simple and easy to implement, and good in use effect.

The invention relates to aggregate floating prevention lightweight ceramsite concrete. The aggregate floating prevention lightweight ceramsite concrete is prepared from the following components: coalash, lightweight ceramsite, ceramsite sand, fine aggregate, hydrogen peroxide, hydroxypropyl methyl cellulose, welan gum, water and a polycarboxylic admixture according to the mass ratio of (200 to 300):(20 to 40):(20 to 60):(180 to 400):(100 to 160):(180 to 450):(6 to 12):(0.024 to 0.048):(0.048 to 0.192):(125 to 150):(4 to 8). The volume weight of the prepared lightweight ceramsite concrete canbe adjusted in the 800-1500 kg / m<3> interval, the strength interval is 5-30 MPa, and the heat conductivity interval is 0.15-0.25 W / m.K; broken ceramsite slag is adopted as ceramsite sand, the accumulation storage problem of the broken slag as waste is solved, and the aggregate floating prevention lightweight ceramsite concrete has good social and economic benefits.

A scalable content delivery network (SCDN) employs a parallel download mechanism to ensure that a demanded file is present at a station in time for user consumption. This mechanism is used in solving the content caching and storage problem for applications such as video-on-demand, which is commonly perceived as a tough problem in the industry. In the network, files are divided into smaller units called tracks according to the nature of data contained in each of them. Tracks are further divided into smaller equally sized units called block files. This division builds the foundation for parallel download. A sequence server provides a lock-free mechanism for multiple threads or processes to access data atomically. The sequence server allows clients to gain sequential access to data, or to find out whether the sequence has been violated so that they can retry their operation or take corrective action. Advantages of the invention include the ability to handle distribution of large files and process sequencing.

The invention discloses a block chain-based mobile projection authorization management method, and relates to the technical field of block chains, the field of digital film copyright protection and the field of data security. Encrypted distributed storage of authorization information and authorization processing on nodes are completed through cooperation of the block chain technology and the IPFS technology. The method specifically comprises the following steps: obtaining and uploading authorization information, encrypting the authorization information, and storing the encrypted authorization information into a block chain IPFS storage system; and the user equipment being respectively accessed to the block chain network to form a user interaction network and an equipment light node network. And after the user node proposes an authorization application, authorization operation of authorization information is carried out through identity authentication and equipment authentication. And after the authentication is successful, the device light node can obtain the authorization information to perform corresponding decryption processing. According to the method, the storage models of the block chain and the IPFS are utilized, the capacity storage problem of the block chain is solved, and the expandability of the block chain is improved.

The invention discloses an HBase-based centralized power grid history data storage method, and belongs to the technical field of electric power system databases. The method comprises a telemetering data acquisition definition step of determining a telemetering data source and a data acquisition period, a telemetering data acquisition step of extracting history data from the appointed data source according to the period so as to form a history data file and realize uniform collection of telemetering history data, and a telemetering data storage step of storing the extracted history data into anHBase database to realize centralized storage of the telemetering history data. According to the method, an automatic distribution collection function of history data in the whole network range is realized, and storage problems in mass history data sets are solved on the basis of characteristics of the HBase database; and compared with the traditional relational database-based history data storage, the method has more stable writing and query performance under the premise of a million-level data size, and provides data basis for subsequent history data-based deep data application.

Relating to the field of optical communications and disclosed in the embodiments of the present invention are a wavelength division multiplexer and passive optical network system for use in optical fibre communication and resolving both the storage problems caused by wavelength division multiplexers requiring different final-stage center wavelengths,and difficulties of deployment.The multistage beam-splitting passive optical network system provided in the embodiments of the present invention comprises:an optical line terminal;beam-splitting components used to split received optical signals into M branches;M wavelength division multiplexers having M common ports and N branch ports,the M wavelength division multiplexers respectively using different common ports to receive a branch optical signal,then sending each such received optical signal downstream after splitting same;M partial reflectors,each disposed on one of the M branches respectively and also at one side near the beam-splitting components so as to constitute,with the wide spectral gain laser of the optical network unit,a self-injecting laser,and to send upstream the signals modulated by the laser.

The invention discloses a method for preparing a cementing material by using copper slag and steel slag as raw materials, comprising the following steps: slag activation of copper slag and steel slagis carried out; the cementing material is prepared by using the activated copper slag and the activated steel slag obtained in the S1 as raw materials. The cementing material is mainly prepared from the following ingredients (by weight): 30%-70% of activated copper slag, 20%-50% of activated steel slag, and 10-20% of an alkaline activator. By the slag activation and valuable metal recovery coupling technology, high-grade iron ore concentrate is recovered, and activated slag for preparing the novel cementing material is also obtained. Comprehensive utilization of smelting waste is realized, theslag storage problem is thoroughly solved, and various performance indexes of the cementing material are good.

The invention provides a non-uniform space configuration distributed SAR moving target three-dimensional imaging method based on compressed sensing, and belongs to the field of communication field. The method aims to solve the data storage problem of existing distributed SAR moving target three-dimensional imaging and the problem that transmission amount is large. The method includes the first step of building a moving target three-dimensional redundant dictionary and the second step of using a redundant-basis pursuit moving target three-dimensional imaging technology, wherein the first step includes the steps of combining geometry characteristics of non-uniform space configuration and three-dimensional position information and speed information of a ground moving target, dividing an observation area into a plurality of independent observation units, building a complete ground scattering point observation model and building the dictionary according to a discrete echo model, and the second step includes the steps of carrying out sparse decomposition on a non-uniform space configuration distributed SAR echo signal according to the dictionary built in the first step, converting a sparse solving problem into a convex optimization problem through a basic tracking signal reconstruction method, obtaining the three-dimensional information and the speed information of the moving target from a reconstruction signal and finishing three-dimensional imaging. The non-uniform space configuration distributed SAR moving target three-dimensional imaging method is used in distributed SAR moving target three-dimensional imaging.

The invention discloses an automatic rainstorm runoff sampling and monitoring device and an automatic rainstorm runoff sampling method. The automatic rainstorm runoff sampling and monitoring device comprises a base, a power supply, and a rainfall collector, a flow monitor, a signal transceiving and data storage device and a water sample collecting, sealing and storing integrated device which are mounted on the base and connected with the power supply, and a sampling bottle turnplate system connected to the upper side of the water sample collecting, sealing and storing integrated device. Through use of the automatic rainstorm runoff sampling and monitoring device, automatic collection, monitoring and storage of a runoff water sample in the field can be achieved. Through the automatic watersample collecting, sealing and storing integrated device, the sealing and storage problems of the water sample are solved; through the rainfall monitor and the flow monitor, device opening is achievedon the basis of the rain intensity, and during collection and monitoring, the function of collecting more rainwater at a large flow, collecting less rainwater at a small flow is achieved; through a water quality monitoring probe, the function of monitoring physical indexes of the water quality while the water sample is collected is achieved.

The invention discloses a cloud storage system based on openstack, and relates to the field of computer cloud computing storage. The system architecture mainly comprises a server and a client, the server is divided into a Swift resource layer and a Keystone service layer, which are separately used for providing data storage and authentication services; the client is divided into a presentation layer and a logic layer; and a complete cloud storage system is formed by the cooperative work of the four layers together. According to the cloud storage system disclosed by the invention, the storage system is constructed by the combination of Swift and Keystone, a secure access control mechanism is provided, the storage problem of a GB level big file is solved, the cloud storage system is suitable for storing data with arbitrary size, and meanwhile the design realizes a resource management mode satisfying using habits of users.

The invention relates to an intelligent monitoring system based on a cloud computing technology and a device thereof. The intelligent monitoring system comprises front-end equipment, transmission equipment, control equipment, display equipment, accessory equipment, an accessory and an intelligent monitoring system used for managing and controlling the above-mentioned equipment; the intelligent monitoring system is characterized in that the intelligent monitoring system senses signal information based on cloud platform storage and further by making use of an Internet of Things zigbee technology, and multi-network integration is applied to a server terminal through a base station and an application support terminal cloud platform; and an application client includes a server and a client. According to the intelligent monitoring system based on the cloud computing technology and the device thereof provided by the invention, by integrating the cloud computing technology, the storage problem of mass data can be well solved; the system comprises a Windows operating system server, an Apache web page server, a MySQL database server and a PHP application server at the server side. Therefore, fora conventional server, the burden of the server can be reduced and the execution efficiency can be improved.

The invention discloses a polymer emulsion interpenetrated with polyurethane / polyacrylacid ester and the preparation method. Said polymer emulsion is introduced with vinyl ether group, the structural formula is R- (O-R1)n, R is the main body of said polymer emulsion, R1 is vinyl- containing group, n is 1- 4. The invention employs multiple crosslinking technique to introduce vinyl ether group into said polymer emulsion, which reduces filming temperature and increases physical and decoration property for said polymer emulsion. There is no inhibiting action for vinyl ether polymerization by oxygen, so the surface dry and storage problem for general water- brone oxiding system can be solved. The product in this invention is mainly used for wood, metal and plastic coating and protection.

The invention discloses a power grid equipment data acquisition method and system. The method comprises the following steps: obtaining storage data from a service system, querying and analyzing the storage data to obtain storage problem data; according to the storage problem data, generating an acquiring and recording task; an acquiring and recording terminal obtaining the acquiring and recording task; according to the acquiring and recording task, acquiring and recording data of power grid equipment to be acquired to obtain acquiring and recording data; and according to the acquiring and recording, updating the storage data. According to the invention, the storage problem data is obtained by analyzing the storage data and is taken as a basis for acquiring and recording, such that the acquiring and recording data amount can be greatly reduced, data with information errors or logic errors can be accurately re-acquired, and the data acquisition efficiency is improved; and the acquiring and recording data is uploaded to the service system such that the acquiring and recording data can be conveniently managed.