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DSP (digital signal processor) embedded FLASH file storage system

A file storage and embedded technology, applied in the field of DSP embedded FLASH file storage system, can solve the problems of low management efficiency, unfavorable program upgrade and maintenance, inconvenient FLASH space management, etc., to achieve convenient management, convenient program maintenance and upgrade. , the effect of improving management efficiency

Inactive Publication Date: 2011-06-22
VISIONDIGISHANGHAITECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a DSP embedded FLASH file storage system to solve the technical problems of inconvenient FLASH space management, low management efficiency, and unfavorable program upgrade and maintenance in the prior art

Method used

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  • DSP (digital signal processor) embedded FLASH file storage system
  • DSP (digital signal processor) embedded FLASH file storage system
  • DSP (digital signal processor) embedded FLASH file storage system

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] see figure 2 , a kind of DSP embedded FLASH file storage system, is used for managing FLASH space, comprises: root directory area 21, file configuration table area 22, data area 23, backup root directory area 24 and backup file configuration table area 25.

[0023] The root directory area 21 is used to store the numbering of the first data block of the file name, the file length and the corresponding file data, the root directory area 21 includes several root directories; the file configuration table area 22 is used to store the pointer correspondence between the data blocks relationship, which includes several data block pointers; the data area 23 is used to store file data, and the data area further includes several data blocks of equal size.

[0024] In this example, the number of data block pointers is equal to the number of data blocks, and each data bl...

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Abstract

The invention discloses a DSP (digital signal processor) embedded FLASH file storage system which comprises a root directory area, a data area, a file allocation table area, a backup root directory area and a backup file allocation table area, wherein the root directory area is used for storing file names, file lengths and the serial numbers of first data blocks corresponding to file data; the data area is used for storing the file data, and comprises a plurality of data blocks of equal size; the file allocation table area is used for storing pointer corresponding relationships between data blocks; the backup root directory area is connected with the root directory area, and used for carrying out recovery on the data in the root directory area when the root directory area goes wrong; and the backup file allocation table area is connected with the file allocation table area, and used for carrying out recovery on the data in the file allocation table area when the file allocation table area goes wrong. The file storage system disclosed by the invention has the advantages of convenient FLASH-space management, high management efficiency, high operation speed, and capability of facilitating the program maintenance and upgrade.

Description

technical field [0001] The invention relates to a file storage system, in particular to a DSP embedded FLASH file storage system which is convenient for managing the FLASH space. Background technique [0002] For a long time, in the DSP embedded system, the management of the flash memory (FLASH) space is realized by accessing the FLASH in the form of data, and the data is stored on the FLASH according to the order of physical addresses from low to high. please participate figure 1 , which is a schematic diagram of an existing FLASH structure for sequentially storing data. The FLASH is divided into multiple data storage areas such as a program area 11, a Chinese character library area 12, an OSD (On-Screen Display screen menu adjustment method) parameter area 13, and a network parameter area 14. Among them, the program area 11 is used to store programs. Its address space is 0x0-0x19FFFF; the Chinese character library area 12 is used to store the Chinese character library, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06F12/02G06F11/10
Inventor 臧岩松
Owner VISIONDIGISHANGHAITECH
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