Storage medium management method

A storage medium and management method technology, applied in the field of storage medium management, can solve the problems of low efficiency of the exchange area and unstable performance of the storage medium, and achieve the effect of avoiding the problem of unstable performance, eliminating uneven wear, and being easy to implement.

Active Publication Date: 2009-05-20
NETAK TECH KO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology can solve the above problems, but the problem of low efficiency of the exchange area occurs, and a large amount of data needs to be copied for a period of time, resulting in unstable performance of the storage medium

Method used

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  • Storage medium management method

Examples

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Embodiment Construction

[0026] refer to image 3 , showing a schematic diagram of the logical block and physical block mapping relationship in the first embodiment of the present invention. This embodiment is applied to flash memory media (FLASH), and a comparison table is made in the entire storage medium, but the storage medium is only divided into multiple logical domains. Areas are not divided into physical domains, and each logical area can be compared to the physical blocks of the entire storage medium. When a certain logical address is accessed, the comparison table of the area where the logical address is located is loaded into the memory.

[0027] In this embodiment, a swap block (swap) is also provided, and the exchange of physical blocks is realized by sharing the swap block, thereby eliminating the problem of unbalanced wear and tear of physical blocks.

[0028] Specifically, assuming that the storage medium has m physical blocks in total, the logical address is divided into L areas, whi...

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Abstract

The invention provides a method for managing a storage medium. The method comprises: step one, logical addresses are managed in subareas; and the corresponding relation between at least one region logical address and at least one physical address is established; step two, the corresponding relation between at least one region logical address and at least one physical address is loaded in a memory; and step three, according to the corresponding relation between at least one region logical address and at least one physical address, an accessing command is executed. In the method, the logical address of the storage medium is divided into a plurality of regions; each region respectively organizes a contrast table, thereby realizing the completion of managing the large-capacitance storage medium through occupying less memory; the method also utilizes an exchange block to realize mutual exchange of physical blocks among the regions, thereby solving the problem of unbalanced abrasion among the regions and simultaneously avoiding the problem of unstable performance caused by the transferring of data of the whole region; and the method is safe, stable and easy to realize.

Description

technical field [0001] The invention relates to the field of static memory, in particular to a storage medium management method. Background technique [0002] The existing management method for storage media is generally to establish a comparison table between physical address and logical address, refer to figure 1 The schematic diagram of the comparison relationship between the logical block and the physical block is shown, the physical block corresponding to the logical block can be found through the comparison table, and when a physical block becomes a bad block, it can be eliminated. However, as the capacity of the storage medium increases, the amount of data in the comparison table also increases. It is almost impractical to store the comparison table of the entire storage medium in the memory of the embedded system. [0003] An existing segment management technology manages segments of physical blocks of a storage medium. Such as figure 2 As shown in the schematic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/06
Inventor 钟智渊
Owner NETAK TECH KO LTD
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