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Method of video recording document storage and data recovery of digital hard-disc video recorder and system thereof

A technology for hard disk video recorders and video files, which is applied in the fields of digital data processing, redundant data error detection in operations, special data processing applications, etc. Eliminate system paralysis, solve system bottlenecks, and improve search efficiency and accuracy

Active Publication Date: 2012-03-21
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The inventors of the present invention found that the disadvantage of this solution is that all information is managed through index files, and the operation and writing of the hard disk needs to read and write the index, so the area where the index file is located becomes the hotspot area of ​​the entire system. Once it is destroyed, the entire file The management method will not be able to continue
On the other hand, hotspot areas may become the bottleneck of the overall system performance

Method used

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  • Method of video recording document storage and data recovery of digital hard-disc video recorder and system thereof
  • Method of video recording document storage and data recovery of digital hard-disc video recorder and system thereof
  • Method of video recording document storage and data recovery of digital hard-disc video recorder and system thereof

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Embodiment Construction

[0040] In the following description, many technical details are proposed for the reader to better understand this application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions required by the claims of this application can be implemented.

[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] The first embodiment of the present invention relates to a method for saving video files of a digital hard disk video recorder. The method for saving the video files of the digital hard disk video recorder is as follows: partition the hard disk in advance, when the channel is recording, retrieve the hard disk partition data file and update its summary inf...

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Abstract

The invention relates to security fields and discloses a method of video recording document storage and data recovery of a digital hard-disc video recorder and a system thereof. A data document area and a summary information area are pre-arranged on a hard disc, the data document area comprises a plurality of pre-established data documents, each data document comprises index information and video recording data, and the summary information area comprises at least one B+ tree. The index information of the data documents is dispersed by means of abrasive balance characteristics of B+ tree structure operation so as to reduce the rate of hard-disc faults, eliminate hotspot areas, guarantee completeness and order of all the data documents and summary information of the video recording documents in the B+ tree of the summary information area, and accordingly ensure correctness of the video recording documents of the digital hard-disc video recorder and provide a recovery method of complete data. The system can not be broken down by single-point faults.

Description

Technical field [0001] The invention relates to the field of security and protection, in particular to the storage and recovery technology of audio and video files in digital hard disk video recorders. Background technique [0002] Digital Video Recorder ("DVR") is a computer system for image storage and processing. It has the functions of long-term recording, recording, remote monitoring and control of images or voice, and is widely used in the security industry. Its audio and video storage technology has become a hot topic. [0003] The Chinese patent with application number 200510050829.3 proposes a digital hard disk video recorder file management method to prevent file fragmentation. A fixed size file is pre-allocated on the hard disk, so that the same file can be continuous on the physical hard disk, effectively preventing the hard disk Fragments are generated, and these pre-allocated files and video information are centrally managed through an index file. [0004] The invento...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F17/30
Inventor 蒋华清
Owner HANGZHOU HIKVISION DIGITAL TECH
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