Data storage method

A data storage and data technology, which is applied in the field of data difference storage, can solve the problems of large data writing volume, large storage space, and slow writing speed, so as to improve data writing speed, fully store space, and improve writing speed. speed effect

Inactive Publication Date: 2011-02-16
HISENSE BROADBAND MULTIMEDIA TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

If it is still necessary to write all the data with only a small part of changes into the memory for storage, the amount of data written is large, the writing speed is slow, and it needs to occupy a large storage space

Method used

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Embodiment Construction

[0030] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] The present invention considers that when data storage such as Flash, EEPROM, file system, writes new data every time and all writes, even for the data writing that only a small part takes place update, thus there will be a large amount of time occupied. To solve the problems of storage space and slow data writing speed, a data storage method is proposed, which is based on dynamic data storage technology and takes into account the differential storage of data. Specifically, the basic idea of ​​this method is as follows: data storage Taking data records as the basic reading and writing unit, each data record occupies a virtual small sector storage space to realize dynamic storage. Each data record includes a virtual sector allocation table including keywords, data and parameters characterizing the char...

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Abstract

The invention discloses a data storage method. Data records are taken as basic read-write units for the data storage; and each data record occupies storage space of a virtual small sector and comprises keywords, data and a virtual sector distribution table representing the parameter characteristics of the data records. The data records are written into the storage space, the data of the data record to be written is compared with the data of the written data record of which the keyword is the same and the data is the latest base data; if differential writing is needed, the difference data is assembled, which is served as the data of the data record to be written according to the latest base data; otherwise, the data record to be written is directly written. In the data storage method, the differential data storage is considered in the storage process, the data writing amount is reduced, the occupation of the storage space is reduced and the writing speed is improved.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a data storage method considering data difference storage. Background technique [0002] As a storage medium, Flash is widely used in the storage field. The physical structure of Flash is divided into several physical blocks (Block), which are independent of each other. It has the following characteristics: (1) Due to the writing operation of Flash, the data bit can only be written from 1 to 0, and cannot be written from 0 to 1, so the erase operation must be performed before writing to the flash memory, and the pre-written data bit is initialized to 1, and the minimum unit of the erase operation is a block, not a single byte; (2) Flash (3) The block erasing time is relatively long; (4) During the use of Flash, some blocks may be damaged, and once a block is damaged, it cannot be repaired. Therefore, when using the traditional method to store data on the Flash, the storage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02
Inventor 田友强
Owner HISENSE BROADBAND MULTIMEDIA TECH
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