Hard disk video recorder file systems and checking method thereof

Abstract

The invention discloses a file system used for a hard disk video recorder and the check method thereof. The file system comprises two parts of a general file system and a dedicated file system, wherein the general file system is provided with a management mechanism for nodal points, contents and files; the dedicated file system includes a super block, a data block bitmap, a data area and a backup data area. The method comprises the following steps of recording use conditions of data blocks in hard disk areas at the two parts; applying for a memory area; then reading out the use condition of the data block in the hard disk area stored by the general file system; and finally, covering the use condition of the data block in the hard disk area stored by the dedicated file system, so as to accomplish the consistent check. The invention absorbs the advantages of the general and the dedicated file systems, thereby improving the stability and the security of the file systems; and aiming at the concrete safety protection operation, the sizes of the files are set, thereby breaking the limitation the general file system.

Description

Technical field [0001] The invention relates to a file system and an inspection method thereof, in particular to a file system and an inspection method for a hard disk video recorder. Background technique [0002] In the security system, a hard disk video recorder is generally used to store video images. At present, the FAT32 general file system is generally used. The FAT32 general file system has its own shortcomings. On the one hand, the access frequency of each area in the hard disk is very uneven. The area is read and written very frequently (such as the file system information sector, that is, the sector number is 2), and some sectors may never be accessed. This will cause relatively frequently accessed sectors, in a vibration environment, and the hard disk is not shockproof. In good conditions, it is easily damaged. On the other hand, a standard file is easy to be known, so it may be easily altered by others, and some file system file sizes are limited (for example, FAT32 f...

AI Technical Summary

Problems solved by technology

[0002] In security systems, hard disk video recorders are generally used to store video images. At present, the FAT32 general file system is generally used, and the FAT32 general file system itself has its own shortcomings. On the one hand, the access frequency of each area in the hard disk is very uneven. The reading and writing of the sector is very frequent (such as the file system information sector, that is, the sector number is 2), and some sectors may never be accessed, which will cause the relatively frequent sectors to be accessed in a vibration environment, and the hard disk is not shockproof. Good case, easily damaged

On the other hand, a standard file is easy to know, so it may be easier to be tampered with, and some file systems have limited file size (for example, FAT32 files can only be within 2G)

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