Disk bare-write-based cyclic file coverage system and read-write method

Abstract

The invention discloses a disk bare-write-based cyclic file coverage system and a read-write method, which belong to the technical field of electronic information and comprise a partition table, a directory area, an index area and a data area. The partition table is used for recording space information, sector sizes and formatting time corresponding to the directory area, the index area and the data area; wherein the directory area is used for storing directory entries, and the directory entries record index information in a first preset time period and rough data information corresponding to indexes; the index area is used for storing index entries, and the index entries record detailed data information in a second preset time period; and the data area is used for storing a data packet, and complete data information of a user is packaged in the data packet. The method can be suitable for storage with larger data volume, can be used for repairing the file system more quickly, and has the advantage of retrieving the target information more efficiently.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and more specifically relates to a disk bare-write-based circular coverage file system and a read-write method. Background technique [0002] Common file systems usually include index file systems, journal file systems, and network file systems. In the vehicle monitoring industry, index file systems are often used. Common index file systems include: EXT4, FAT32, and NTFS, etc., which are most used The one is FAT32. These common file systems are mainly used by mass users, and provide functions such as adding, deleting, modifying, and checking. The data generated by the vehicle monitoring industry is mainly fixed types of continuous data such as audio, video, positioning, and algorithms. These data are not allowed to be modified. Delete, and there is a strict synchronization relationship between data, and with the development of video, the amount of data is increasing, and the use o...

AI Technical Summary

Problems solved by technology

However, as the video becomes clearer and the number of cameras increases, users expect data to be stored for a longer period of time, and the cost of storage devices such as large-capacity hard disks or SD cards is reduced. Vehicle-mounted terminals are gradually using hard disks and large-capacity SD cards as storage media. , the current data retrieval efficiency can no longer meet the demand, so a high-efficiency solution is urgently needed

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