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154results about How to "Avoid duplicate storage" patented technology

Method for acquiring position information in real time based on GPS (Global Positioning System) data

The invention relates to a method for acquiring position information in real time based on GPS (Global Positioning System) data, relating to a method for intelligently navigating and positioning by a computer. In the method, a navigation center processing method comprises the following steps of: performing grid division to an electronic map; establishing POI (Point of Interest) point records for all grids; establishing sub-area records for various grid regions; establishing administering relation trees for sub-areas of various grid regions; receiving the position information of inquiring points; acquiring POI point records of the grid and peripheral grids where the inquiring points are, and the sub-area records of the minimal grid region corresponding to the grid where the inquiring points are; judging whether POI points are existed besides the inquiring points, if so, calculating the distance between the inquiring points and the POI point and re-transmitting the result and description of the POI point; if not, acquiring the minimal grid region corresponding to the grid of the inquiring points and the names of all dormant regions depending on the administering relation, thereby obtaining place name describing statement for re-transmission. The method in the invention is rapid in inquiring speed, and clear and direct in position information.
Owner:XIAMEN YAXON NETWORKS CO LTD

Method and device for avoiding repeated storage of content in distributed cache cooperation

ActiveCN104901996AReduce traffic between domainsReduce trafficTransmissionTraffic capacityDistributed cache
The invention discloses a method for avoiding repeated storage of content in distributed cache cooperation. The method comprises the steps as follows: using a binary identifying method to perform binary identification on content data blocks; establishing two-level logic mapping tables based on the binary identification of the content data blocks to organize caching content, and performing cache cooperation on the caching content based on distributed Hash operation; receiving a request for a certain content data block from the external by an edge content router, forwarding the request to an internal node which is in charge of storing the content via two-stage routing, transmitting the data block with the node which is in charge of the corresponding content data block to the edge content router, and updating cache replacement control state information of corresponding items of the two-level mapping tables; and receiving a certain data block from the external by the edge content router, forwarding the data block to an internal node which is in charge of storing the content through two-stage routing, and establishing corresponding two-level mapping relationships in the routing forwarding process.. The method of the invention could avoid repeated storage of the content, thereby reducing network flow and improving user experience.
Owner:NANJING NORMAL UNIVERSITY

Storage space optimization method and device, computer device and storage medium

The invention provides a storage space optimization method and device, a computer device and a storage medium. The method comprises: S11, generating a file storage table; S12, whether a storage instruction is received or not is judged, and if yes, the step S13 is executed; S13, obtaining unique identification information of the to-be-stored file, searching whether the unique identification information of the to-be-stored file exists in the file storage table or not, if yes, executing the step S14, and if not, executing the step S15; S14, searching whether a local storage address correspondingto the to-be-stored file exists in the file storage table or not, if yes, adding 1 to the storage frequency corresponding to the to-be-stored file in the file storage table, otherwise, storing the to-be-stored file, and setting the storage frequency corresponding to the to-be-stored file as 1 in the file storage table; and S15, storing the to-be-stored file, adding corresponding storage information of the to-be-stored file into the file storage table, and setting the storage frequency corresponding to the to-be-stored file as 1. The method and the device can solve the problem that the application program repeatedly stores the file locally.
Owner:PING AN TECH (SHENZHEN) CO LTD

An energy-saving camera device

The invention provides an energy-saving camera device comprising a support, universal rotating devices, cameras and a control box. The support is provided with an annular or arc-shaped camera track. The universal rotating devices are arranged on the camera track. The control box controls the movement of the universal rotating devices on the camera track and the rotation of the universal rotating devices. The cameras are connected to the universal rotating devices and are electrically connected with the control box. By fully utilizing a solar device, independent power supply is realized and efficient utilization of energy is realized; according to the different characteristics of different solar battery pieces, the design of an overturning solar panel of the solar device enables the influence of the illumination intensity on the conversion efficiency of the solar panel to be reduced, and achieves full utilization of solar energy; through cooperation of all supply units, the energy conservation and the optimal control of the device are realized; the electric supply loss of the device is reduced by 20% compared with that of common camera devices; the scanning speed of the monitors is reduced at night, so that energy can be further saved and the applicability of the cameras is guaranteed.
Owner:CHENGDU 90 DEGREE IND PROD DESIGN CO LTD

Information storage method and system based on block chain, computer equipment and storage medium

The invention discloses an information storage method and system based on a block chain, computer equipment and a storage medium. The information storage method comprises the following steps: if to-be-stored information is received, generating a public key and a private key according to a secret key generation rule, judging whether a valid identity certificate exists or not according to a certificate judgment rule, if not, sending an identity certificate acquisition request to a management server so as to acquire an effective identity certificate, associating the public key with the valid identity certificate so as to obtain associated information, sending the associated information to the management server, signing the to-be-stored information according to a signature rule and the privatekey so as to obtain to-be-stored information containing a signature value, associating the to-be-stored information with the public key and the signature value so as to obtain associated storage information, and performing distributed storage. Through the above-mentioned information storage method, the identity certificate and the to-be-stored information are stored respectively, so repeated storage of the identity certificate due to the fact that the identity certificate is added into the to-be-stored information is avoided; the storage space is saved; and the data information storage efficiency is improved.
Owner:SHENZHEN QIANHAI HUANRONG LIANYI INFORMATION TECH SERVICES CO LTD

Data processing method and device based on distributed storage, equipment and medium

The invention provides a data processing method and device based on distributed storage, equipment and a medium, and the method comprises the steps: carrying out the space detection of a first block processing space of a storage buffer pool when first block data is written into a local cache and a local storage, and obtaining a first space detection result; if the first space detection result indicates that the number of the to-be-stored blocks does not reach the buffer block processing threshold, writing the first block data into the storage buffer pool based on the N pieces of to-be-stored block data; performing space detection on a second block processing space of a storage processing pool to obtain a second space detection result; and if the second space detection result indicates thatthe number of the to-be-fed back blocks does not reach the feedback block processing threshold, based on the number of the to-be-fed back blocks and the feedback block processing threshold, determining to carry out overlapping detection with the M to-be-fed back block data and the to-be-merged block data from the storage buffer pool, and writing the data after overlapping detection into a distributed database. By adopting the method and the device, the data storage efficiency can be improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD

Disk snapshot creation method and disk snapshot creation device

The invention discloses a disk snapshot creation method and a disk snapshot creation device. The disk snapshot creation method comprises the steps that multiple public mirror images and initial snapshots corresponding to the public mirror images are provided, wherein the public mirror images are associated with public mirror image ID; an instruction of creating data file snapshots in a terminal disk sent by a terminal is received; according to the public mirror image ID associated with the data files, the initial snapshots corresponding to the public mirror images associated with the public mirror image ID are determined; the data files and the initial snapshots are compared to obtain incremental data; based on the initial snapshots and the incremental data, current snapshots of the data files are created. By adopting the disk snapshot creation method, when the data files of the terminal disk are initialized by the public mirror images, existing snapshots of already existing public mirror images are directly used as a part of snapshots, accordingly current snapshots of the disk are quickly created, the phenomenon is avoided that existing data is stored repeatedly in a storage server, and accordingly the occupied space of the storage server is decreased.
Owner:ALIBABA GRP HLDG LTD
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