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694results about How to "Save storage space" patented technology

Data storage method based on RS (Reed-Solomon) erasure codes

The invention belongs to the technical field of information processing, relating to a data storage method based on RS (Reed-Solomon) erasure codes. The method comprises the following steps of: carrying out blocking processing and grouping processing on files to be stored; transmitting original data blocks of each data group to data nodes, and carrying out RS encoding by the data nodes so that each data group is increased with a plurality of redundant data blocks on the basis of the original data blocks; storing the encoded data blocks in the same data group on a plurality of machine racks, wherein the number of the data blocks in the same data group on the same machine rack does not exceed the number of the redundant data blocks; adopting the RS erasure codes to restore the data blocks when the data blocks in the stored files are damaged, and obtaining the restored data blocks. The invention saves a large amount of storage space on the basis of ensuring daily usage efficiency. The requirements for the reliability of data storage can be flexibly set according to the importance of the files. More abundant storage strategies can be provided by setting the number of backup files and encoding parameters, and the cost for data storage is greatly reduced.
Owner:SHANGHAI JIAO TONG UNIV

Real-time deformation monitoring pre-warning system and real-time deformation monitoring pre-warning method based on inertia-assistance positioning receiver

The invention relates to a real-time deformation monitoring pre-warning system based on an inertia-assistance positioning receiver and a real-time deformation monitoring pre-warning method based on the inertia-assistance positioning receiver. The real-time deformation monitoring pre-warning system is characterized by comprising a GNSS (global navigation satellite system) receiver, an accelerometer, a deformation monitoring device including a data interface and a time synchronization module, and a GNSS correction information obtaining device connected with the GNSS receiver and the deformation monitoring device respectively, wherein the data interface is connected with the time synchronization module in sequence, and the GNSS receiver and the accelerometer are connected with the data interface simultaneously. The GNSS receiver outputs the precise positioning result in real time; meanwhile, the accelerometer is adopted to help to capture dynamic deformation signals, the sampling rate stored by data is adjusted reasonably, and the storage space is saved; and due to the arrangement of a buffer area, the high-sampling-rate data of foreboding period of the severe deformation can be stored completely. The system and the method can be widely applied to the monitoring and the pre-warning of the geological disasters such as earthquake, landslide and the like, and applied to the deformation monitoring of dams, bridges, high-rise buildings and the like.
Owner:WUHAN UNIV

Intelligent monitoring system and method for ATM

The invention relates to a smart surveillance system and a method thereof based on an ATM, pertaining to the computer control and application field. The system has functions of digital memory, overlay of card number, image recording, alarming and networking and can realize real-time monitoring on a money withdrawer and a cash mouth of the ATM. A human body proximity detector is arranged on the ATM, alarm is sent out correctly and a signal is sent to a camera to start image recording when an object approaches the ATM. Triggered video capture only starts to collect video information when a client makes transaction on the ATM. Alarm is sent out when no cash comes out from the cash mouth, vibration happens to the ATM, error happens to the identification of human face, fingerprint and the second generation ID card and discrepancy exists when making matching with a database. Meanwhile, remote alarm input and output of video image and working status information can be realized to achieve real-time network intelligent surveillance. The invention has the advantages of reasonable design, correct control, high reliability, perfect functions and low cost by fully using the prior art and combining the practical situation of the ATM.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Rapid triangle star map recognition method

InactiveCN101441082ASave storage spaceRelieve pressureNavigation by astronomical meansStar sensorRelative magnitude
The invention relates to a fast triangle star atlas identification method in astronomy navigation technology field, which includes steps: 1. using star angular distance as a main identification characteristic, using relative magnitude difference of two stars as a auxiliary identification characteristic to determine star atlas identification characteristic quantity, using the star angular distance between two stars, the relative magnitude difference and star number of the two stars composing the star pair as storage basic element, hypothesizing star sensor view field diagonal distance to be d, storing all basic elements with diagonal distance less than or equal to d, constructing a navigation star database and storing the same; 2. extracting observed stars in a observation star atlas, ordering the star from light to dark according to brightness, constructing a observation triangle to be identified; 3. performing triangle identification by utilizing the method; and 4. verifying. The method realizes fast identification of star triangle in the observation star atlas, has advantages of small amount of calculation, stronger fault tolerance capability, faster identification time and navigation database with smaller capacity, and reduces storage pressure of redundant data to hardware system.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

De-block effect filtering device and method

The invention discloses a deblock effect filter device which comprises a vertical side filter module used for carrying out filter treatment on the vertical side of a macro block; a horizontal side filter module the input end of which is connected with the output end of the vertical side filter module and the output end thereof is connected with the input end of the vertical side filter module used for carrying out filter on the horizontal side of the macro block; an external memory module which is respectively connected with the vertical filter module and the horizontal filter module and is used for memorizing the result data and the line buffer data of the vertical filter and the horizontal filter. The invention discloses a deblock filter effect filter method by utilizing the device which comprises carrying out vertical filter and horizontal filter. As the independent vertical filter module and the horizontal filter module are adopted in the invention, the memory space of a chip macro block grade; moreover, the parallel mode of vertical filter and horizontal filter is adopted for carrying out filter, in this way, a time sequence is looser; and the self-adapting mode of the frame field of the macro block grade is supported, thus extensively improving the filter efficiency.
Owner:昆山杰得微电子有限公司

Method and system for data transmission

The invention discloses a method for data transmission. The method is used for an object carousel system consisting of a front end and a terminal and comprises the following steps of: requesting to acquire a directory tree structure of a webpage from the front end by using the terminal and establishing the directory tree structure of the webpage according to the data acquired by the request; determining the hierarchy which the page requested to be opened by a browser at present belongs to; requesting to acquire file data corresponding to the page requested to be opened at present from the front end; displaying the page and caching the data according to the data acquired by the request; requesting to acquire file data corresponding to a next-stage page of the page requested to be opened atpresent; caching the file data which the next-stage page corresponds to and is acquired by the request; and then waiting for the next request of the browser. The invention also discloses a system fordata transmission. The method and the system for data transmission has the advantages of reducing occupied storage space when the front end stores the webpage data, preventing the terminal from receiving repeating data repeatedly when requesting data, and improving the effective downloading speed of the terminal.
Owner:SHENZHEN COSHIP ELECTRONICS CO LTD
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