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Video data storage format, storage method and search method

A technology of video data and storage format, applied in the fields of electronic digital data processing, special data processing applications, closed-circuit television systems, etc., can solve the problems of easy generation of disk fragmentation, low storage performance and retrieval efficiency, etc. The effect of retrieval efficiency and easy management

Active Publication Date: 2011-06-15
QINGDAO HISENSE TRANS TECH
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Problems solved by technology

[0004] In order to solve the problem that disk fragments are easily generated in the storage process of IP SAN, and the storage performance and retrieval efficiency are not high, the present invention proposes a brand-new video data storage method to reduce the generation of disk fragments and improve storage efficiency

Method used

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  • Video data storage format, storage method and search method
  • Video data storage format, storage method and search method
  • Video data storage format, storage method and search method

Examples

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Embodiment 1

[0033] Embodiment 1, in order to reduce the generation of disk fragments, improve storage efficiency and facilitate the management of video data in this embodiment, the storage format of video data has been newly designed as follows:

[0034] The storage management program initializes the logical volume (hereinafter referred to as target) corresponding to each camera in the memory, and divides it into two categories: device header, namely MBR (size is 512B); page, namely leaf (size is 256M) ,Such as figure 1 shown. Therefore, a new target is composed of an MBR with a size of 512B and several leafs with a size of 256M. Of course, the size of the device header MBR and page leaf is not limited to the above examples. Among them, the size of the MBR can be adaptively modified according to the amount of information it stores; the size of the leaf can be adaptively modified according to the size of the streaming media storage code stream. Generally speaking, most high-definition c...

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Abstract

The invention discloses a video data storage format, a video data storage method and a video data search method. The storage format is that: a logical volume in a memory is divided into two types, namely an equipment head and a plurality of pages, wherein the equipment head stores related information of the pages; the related information comprises a current page field and a current offset field into which video data is written; each page is divided into two parts, namely a page head and at least one data block, wherein the page head comprises a start time field when the video data is stored into the page; and each data block is divided into two parts, namely a block head and a real video data storage area, wherein the block head comprises a data block size field and a time offset field opposite to the page head. Received video data is directly stored into a raw device based on the storage method disclosed by the storage format, disk fragmentation can be reduced, and search efficiency can be improved. In addition, the video data takes data blocks as units, is stored in the pages of each logical volume, is convenient to manage and has high data access performance.

Description

technical field [0001] The invention belongs to the technical field of video surveillance, and in particular relates to a video data storage format, and a data storage method and a data retrieval method designed based on the data storage format. Background technique [0002] Video storage and retrieval is a key part of the video surveillance system. At present, the surveillance industry mostly uses DVR digital video recorders to store data through the embedded hard disk. However, with the gradual expansion of the scale and scope of the video surveillance system, various shortcomings of the DVR data storage method are also clearly exposed - high hard disk damage rate; no RAID (Redundant Array of Independent Disk) protection; data loss Unrecoverable; small storage capacity; low definition; unable to manage in a unified manner, etc. On the contrary, the IP SAN (SAN Storage Area Network, storage area network) data storage method has the advantages of high performance, high reli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30H04N7/18
Inventor 高岭李月高刘新王玮韩珉
Owner QINGDAO HISENSE TRANS TECH
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