Data access method of electronic equipment

A technology for data access and electronic equipment, applied in the field of data access of electronic equipment, can solve problems such as no solutions, and achieve the effect of improving storage efficiency, data security, and prolonging service life

Active Publication Date: 2014-09-24
CHENGDU WANWEI TUXIN INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, for the above-mentioned problems existing in related technologies, effective solutions have not yet been proposed

Method used

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  • Data access method of electronic equipment

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Embodiment Construction

[0035] The following and accompanying appendices illustrating the principles of the invention Figure 1 A detailed description of one or more embodiments of the invention is provided together. The invention is described in connection with such embodiments, but the invention is not limited to any embodiment. The scope of the invention is limited only by the claims and the invention encompasses numerous alternatives, modifications and equivalents. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. These details are provided for the purpose of example and the invention may be practiced according to the claims without some or all of these specific details.

[0036] One aspect of the present invention provides a data access method for an electronic device. figure 1 It is a flowchart of a data access method of an electronic device according to an embodiment of the present invention. The fol...

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Abstract

The invention provides a data access method of electronic equipment, and the data access method is used for reading, writing and erasing data in a Flash memory of embedded equipment. The method comprises the following steps: establishing an invalid block look-up table and an invalid block mapping table, managing a Flash memory space, recording the state mark of each block, performing balanced erasing based on the erasing frequency of each block, recovering invalid blocks according to preset conditions, arranging an I / O (Input / Output) expansion layer between a single Flash controller and a memory array interface, and reading and writing multiple pieces of Flash. The data access method can be used for improving data storage management in an embedded system and further improving the storage efficiency and reliability.

Description

technical field [0001] The invention relates to a data access method of an electronic device, in particular to a data access method of an embedded device. Background technique [0002] Embedded systems are widely used in industrial control, electronic equipment products, etc., such as real-time video surveillance in intelligent transportation systems. Since the data recording of the embedded system depends on the Flash storage unit, the management and maintenance of the data storage unit is very critical. However, as the number of times of erasing and writing increases, some unit blocks will gradually become unstable or fail to form permanent invalid blocks, resulting in instability of the monitoring system. Therefore, it is necessary to avoid frequent operations on the same block, and try to achieve a balance in the number of erases and writes; and because the erase operation takes a long time, it will affect the real-time performance of the system. Frequent and complex r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/02
Inventor 刘勇蒋浩
Owner CHENGDU WANWEI TUXIN INFORMATION TECH
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