1276results about How to "Solve storage problems" patented technology

The invention belongs to the technical field of computer storage, and provides a safe storage method based on a plurality of cloud storage systems and a system thereof. The method and the system can achieve the purpose that in the plurality of existing cloud storage systems, safety of data and metadata can be guaranteed at the same time. The safe storage method comprises a step of data writing operation and a step of data reading operation, wherein the step of data writing operation comprises the sub-steps of data partitioning, data encryption, redundancy encoding, digital signature, sharing processing, and data storage. The step of data reading operation comprises the sub-steps of metadata partition file decryption, digital signature inspection, redundancy decoding and cipher text data block decryption. The safe storage system comprises an encryption and decryption coding module, a redundancy encoding module, a secret sharing module and a digital signature module. By means of the method and the system, metadata privacy and high availability can be guaranteed, and meanwhile, a user does not need to store any metadata information for indexing and data query.

The invention discloses a device and method for intercepting and processing of videos on an OTT box. The method comprises video interception, video parameter setting, adding of special effects to video clips, video clip stitching and video sharing. According to the device and the method provided by the invention, a television is used as a display screen to intercept videos transmitted by the OTT box connected with a network, enhance the effects of the videos, stitch and store intercepted video clips, and share the video clips to a network platform or a cloud system, so as to solve the problem that people cannot clip and store videos while watching TV.

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 a preparation method of phosphogypsum-based anti-cracking mortar applied to interior insulation of an external wall. The preparation method is characterized in that the anti-cracking mortar comprises the following components in percentage by mass: 40-80% of building phosphogypsum, 20-50% of dried sand, 0-20% of cement, 0-5% of fly ash, 0-0.2% of a high-performance plasticizer, 0-0.2% of a thixotropic agent, 0.1-0.3% of a water-retaining agent, 0.01-0.4% of a gypsum retarder, 0-3% of a micromolecular polymer and 0-0.25% of anti-cracking fiber. According to the preparation method, the building phosphogypsum prepared by washing and calcining industrial byproduct phosphogypsum is used as a cementing material, so that the problems that a cement-based material is easy to shrink, hollow and crack are solved; through full use of the characteristics of fast setting and hardening, good volume stability and low own ratio of compressive strength to flexural strength of a gypsum material, the anti-cracking mortar, of which the ratio of the compressive strength to the flexural strength is lower than 2.5, the operable time is 1-2h, the final setting time is shorter than 3h, the insulation board bonding strength is higher than 0.10MPa and breakage occurs inside an insulation board, is prepared. The anti-cracking mortar is applied to the interior insulation of the external wall and low in cost, reduces the environment pollution, and is simple in production process, low in energy consumption and good in product performance; compared with other insulation board crack resisting products, the anti-cracking mortar has higher market competitiveness and is strong in practicality.

The invention provides a method and a device for processing files in a distributed file system. The method includes: receiving a user's file operation request which at least includes file description information and an operation type; determining a meta main node used for storing metadata of the file from all nodes of a metadata server according to the file description information, and forming a distributed hash table network by all nodes of the metadata server; determining a block main node used for storing data block of the file from all nodes of a data block server according to the file description information, and forming a distributed hash table network by all nodes of the data block server; and finishing an operation between the meta main node and the block main node according to the operation type. The device comprises a receiving module, a routing determination module and a processing module. By the method and the device, expansion of the distributed file system and mass file content storage can be effectively achieved.

The invention discloses marbled glass ceramics directly employing fusion blast furnace slag and a preparation method of the marbled glass ceramics. The marbled glass ceramics comprises the following raw materials, by mass, 55-75 parts of blast furnace slag flux and 25-45 parts of auxiliary material flux; and auxiliary materials comprise the following components, by mass, 8.5-19.5 parts of quartz sand, 0.5-5.5 parts of limestone, 1-5 parts of sodium carbonate, 2-5 parts of potassium carbonate, 1-4 parts of zinc oxide, 1-4 parts of ammonium di-hydrogen phosphate, 1-2 parts of spodumene, 2.5-5 parts of sodium fluosilicate, 0.5-1.5 parts of sodium fluoroaluminate and 0.5-1 part of borax. The preparation method is characterized in that through controlling the mixed melting temperature and time of the blast furnace slag flux and the auxiliary material flux, a flux mixture is obtained; through forming, annealing and microcrystallization heat treatment, the marbled glass ceramics is obtained. The molten blast furnace slag and the auxiliary materials are mixed in a flux form and the flux mixture having certain micro-inhomogeneity is obtained accurately, then with the combination of subsequent forming and heat treatment technologies and the like, the marbled glass ceramics is obtained, so that the technology is easy to implement, and the influence of uncertainty on a product in a mixing process is reduced.

The invention provides a lifting hand-pushing van, comprising a vertical frame which includes an enclosed frame formed by hollow pipes; the bottom of the frame is provided with a walking wheel; the vertical frame is connected with an object arranging frame in a sliding way; a lifting hoisting mechanism is arranged between the upper part of the vertical frame and the object arranging frame; the lifting hoisting mechanism consists of a pulley block, a traction rope, a mainshaft and a reverse rotary self-locking device. The invention is characterized in that the traction rope is a chain; the last crown block of the pulley block is a drive chain wheel which is fixedly connected with the mainshaft which is connected with a power source by the reverse rotary self-locking device; the invention also comprises a chain tensioning and intake mechanism consisting of a first cable wire, a first guide wheel, a first movable wheel and a first pulling spring section, and a backing tensile stabilizing mechanism consisting of a second cable wire, a second guide wheel, a second movable wheel and a second pulling spring section; the invention has the advantages of good strength of chain, being not easy to be broken or be disconnected from the wheel, reliable operation, and high safety.