Embedded File System of Multimedia Data and Its Fast Reading and Writing Method

Abstract

The invention discloses an embedded file system of multimedia data and a fast reading and writing method based on the system, and relates to the technical field of embedded file systems. The present invention includes: a file system and a system disk; the file system divides the system disk into three physical blocks including a global information block, a media summary block and a media data block; the global information block is used to record global information; the media summary block includes a media summary header and several media summary sets; the media summary header is used to record benchmark information and the latest written information; the media summary set includes several media summaries; the media summary is used to represent the identification information and location information of the multimedia data within a basic fixed time; the media data A chunk includes several media data elements. The invention constructs an embedded file system including a global information block, a media summary block and a media data block according to the characteristics and relations among data, time, and system disks; it facilitates embedded storage of multimedia data in the monitoring field and improves storage efficiency.

Description

technical field [0001] The invention belongs to the technical field of embedded file systems, in particular to an embedded file system for multimedia data and a fast reading and writing method for the embedded file system for multimedia data. Background technique [0002] In the field of video surveillance, with the continuous popularization of high-definition and ultra-high-definition cameras, the amount of stored multimedia data is showing explosive growth. The multimedia data stored on the monitoring equipment has the following characteristics: first, the types of data are limited, basically only video, picture, positioning, alarm and log; There is a strong correlation; third, the amount of data is huge, especially high-definition video, which can reach several gigabytes in an hour. However, traditional embedded file systems, such as ext3, ext4, NTFS, etc., as a general file system, have not considered the characteristics of multimedia data stored in the monitoring field...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide the embedded file system of multimedia data and its fast reading and writing method, utilize the characteristic and relation between data, time and system disk to construct the embedded file system that comprises global information block, media summary block and media data block ;Different types of storage media can efficiently store various multimedia data in a unified way, which solves the problem of low read and write efficiency of existing embedded file systems

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