A kind of video sequence storage and query method and device compatible with fat32 file system

Abstract

The invention discloses a video sequence storage and query method and device compatible with fat32 file system, which is composed of a detection unit, a formatting unit, an addressing unit, a video storage unit, and a video query unit. , Compatible with the fat32 file system, but no longer relying on the traditional file system. In the event of an accidental interruption, there will be no need to format it before it can be used. You can attach information to each frame of video and store it sequentially to avoid random disk seeks. It consumes a lot of time and is friendly to the design of the cache. The addressing only needs to be calculated in the memory, and there is almost no need to query the disk, which improves the efficiency; the size and address of each storage block are known, so it is very convenient to restore data.

Description

technical field [0001] The invention relates to the technical field of computer data storage, in particular to a method and device for storing and querying streaming data in the field of video surveillance. Background technique [0002] Video storage is one of the keys to video surveillance applications. Only by storing the video can it be possible to check what happened at the surveillance site at any time later. Video storage in video surveillance applications has the following characteristics: [0003] (1) Write operations are usually more than read operations, and almost no delete operations are required. [0004] (2) In the event of an unexpected interruption, it is necessary to ensure that the storage system can still work normally. [0005] (3) Support to query the corresponding video content according to the conditions. For example, to query the recordings of a certain recording reason. [0006] For these characteristics, using the traditional file system to stor...

AI Technical Summary

Problems solved by technology

The physical address of each operation is unknowable. For storage media that requires magnetic head seeking, random seeking will consume a lot of time, resulting in low efficiency;

[0008] (2) If the index of the file system is damaged when it is accidentally interrupted, the data of the entire sector may be lost, which means that it needs to be formatted to continue to use;

[0009] (3) It is difficult to accurately correspond the additional information to the corresponding position of the video

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