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Wear leveling method and device

A technology of averaging and erasing times, which is applied in the field of averaging devices and mechanisms of erasing, can solve the problem of not being able to achieve the erasing times of the storage block better, and achieve the best processing effect

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

[0002] At present, in order to prolong the service life of a memory unit (such as a flash memory unit), the prior art is dedicated to balancing the erasing times of all storage blocks in the memory unit. However, the problem of the current prior art is that it still The purpose of balancing the erasing times of all storage blocks cannot be better achieved. Therefore, in order to prolong the service life of memory cells as much as possible, a leveling method with better performance and its application device are quite urgently needed of

Method used

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  • Wear leveling method and device
  • Wear leveling method and device
  • Wear leveling method and device

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Embodiment Construction

[0013] Please refer to figure 1 , figure 1 is a schematic block diagram of the device 100 according to the first embodiment of the present invention. The device 100 includes a storage unit 105, a comparison circuit 110, a processing circuit 115, a priority queue 120, and a calculation circuit 125. The device 100 implements a static wear-leveling (Static Wear-Leveling) algorithm in the system. Data exchange is performed between the frequently written available storage blocks and the stationary data storage blocks every predetermined time or every predetermined number of reads and writes, so as to achieve the purpose of evenly erasing the storage blocks. The device 100 of the embodiment can be used in flash memory products, so the service life of the flash memory can be extended. Specifically, the data storage block refers to the storage block that has stored the data content of a data in the current system, and the available storage block refers to the storage block that does...

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Abstract

The invention provides a wear leveling method and a wear leveling device. The method comprises the following steps of: comparing an average erasing frequency with an erasing frequency of a first data storage block by using a comparison circuit; and when the erasing frequency of the first data storage block is less than the average erasing frequency, replacing the data content of the first data storage block by using a first usable storage block to change the first data storage block into a usable storage block. Compared with the prior art, the method and the device have the advantage that: a better processing effect can be achieved.

Description

technical field [0001] The present invention refers to a leveling mechanism, especially a leveling method and a leveling device. Background technique [0002] At present, in order to prolong the service life of a memory unit (such as a flash memory unit), the prior art is dedicated to balancing the erasing times of all storage blocks in the memory unit. However, the problem of the current prior art is that it still The purpose of balancing the erasing times of all storage blocks cannot be better achieved. Therefore, in order to prolong the service life of memory cells as much as possible, a leveling method with better performance and its application device are quite urgently needed of. Contents of the invention [0003] Therefore, one of the objectives of the present invention is to provide a novel leveling method and a device for leveling to solve the problems in the prior art. [0004] According to one aspect of the present invention, a method for leveling erasure is d...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/06
Inventor 刘昭荫陈明胜王胜铉
Owner JMICRON