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Video file storage device and video file storage method

A technology for storage devices and video files, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low file system requirements, achieve simplified index query, accurate index query and management, and less time-consuming Effect

Active Publication Date: 2015-04-01
WUHAN YANGTZE COMM ZHILIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-definition will inevitably produce a larger amount of data. Originally, a hard disk video recorder generally only has 4 or 8 channels, and the requirements for the file system are not very high.

Method used

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  • Video file storage device and video file storage method

Examples

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Embodiment Construction

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0020] The size of the dedicated partition table module 2 is 128M, and there is a partition table information with the same size of 512Byte every 10M, including some basic disk information such as disk size, crc check, etc. for the index block module 3 and data block module 4. ;

[0021] The number of index block modules 3 in the video file storage device 1 is 5, and the number of data block modules 4 is N, and the value of N is greater than or equal to 1. The index block module 3 and the data block module 4 have the same size; the cont...

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PUM

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Abstract

The invention provides a video file storage device and a video file storage method. The video file storage device comprises a single partition table module, an index block module and a data block module, wherein the index block module comprises a data block descriptor module for describing basic information of the data block module; the data block descriptor module comprises the following units: a block number recording unit, an attribute recording unit, a formatting identification recording unit, a data block capacity recording unit, a data block total quantity recording unit, an occupied block quantity recording unit, a write pointer position recording unit, data block descriptor index node quantity recording unit and a cyclic redundancy check unit used for performing data error verification so as to ensure the correctness and integrality of data. By virtue of adopting the device, certain aspects such as the data read-write efficiency, the retrieval efficiency and the retrieval precision are improved to a certain degree, and whole storage media (such as a hard disk and an SD card) can be efficiently managed.

Description

technical field [0001] The invention relates to the field of embedded file systems, in particular to a video recording file storage device. Background technique [0002] Among the current hard disk video recorders, those based on PC and acquisition card generally use Windows system, and the file system mostly uses NTFS or FAT32; while the file system used by embedded hard disk video recorders is different from the embedded operating system selected by the manufacturer and its research and development capabilities. close relationship. At present, the embedded operating systems used in embedded hard disk video recorders include RTOS, pSOS, embedded Linux, VxWorks, etc., and generally use the FAT file system. [0003] With the increasing demand for hard disk video recorders, the traditional FAT format file system gradually becomes incapable, such as low read and write efficiency. In addition, there will be a large number of file fragments after long-term continuous overwriting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F3/064G06F3/0674
Inventor 陈春汉黄莹付凯
Owner WUHAN YANGTZE COMM ZHILIAN TECH
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