| NANDFlash在嵌入式文件系统中的一种动态管理方法 |
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| 引用本文： | 王新华,王建芬.NANDFlash在嵌入式文件系统中的一种动态管理方法[J].计算机应用与软件,2008,25(9). |
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| 作者姓名： | 王新华 王建芬 |
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| 作者单位： | 浙江科技学院信息与电子工程学院,浙江,杭州,310023 |
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| 摘 要： | 针对NANDFlash的使用特性,提出了一种适用于嵌入式文件系统的动态逻辑映射表及其管理算法.通过该表的动态滚动可以均衡NANDFlash中块的使用频率、延长器件使用寿命,同时给出了垃圾块的回收策略和脏数据的判别方法.该算法采用查表的方式解决动态滚动中出现的速度问题,使算法效率高、软件开销少,并得到了实际验证.
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| 关 键 词： | NAND闪存 动态逻辑映射表 均衡 冗余字节 |
A DYNAMIC MANAGEMENT METHOD FOR NANDFlASH IN EMBEDDED FILE SYSTEM |
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| Wang Xinhua,Wang Jianfen.A DYNAMIC MANAGEMENT METHOD FOR NANDFlASH IN EMBEDDED FILE SYSTEM[J].Computer Applications and Software,2008,25(9). |
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| Authors: | Wang Xinhua Wang Jianfen |
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| Affiliation: | Wang Xinhua Wang Jianfen(School of Information , Electronic Gngineering,Zhejiang University of Science , Technology,Hangzhou 310023,Zhejiang,China) |
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| Abstract: | Considering the characteristics of NANDFlash,the dynamic Logical-Physical Conversion Table with its management method is proposed,which is suitable for embedded file system. By scrolling the dynamic table the operating opportunity of blocks in NANDFlash is balanced,so device lifetime is extended. Also the recycle algorithm of invalid blocks and estimate method of dirty data are provided. The problem of software speed arisen from block scrolling is solved by table look-at,so the algorithm has high efficiency... |
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| Keywords: | NANDFlash Dynamic logical-physical conversion table Balance Redundant byte |
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