2013 Fiscal Year Final Research Report
Reserch on dependable and long-life solid disc system using flash memories
| Project/Area Number |
23500059
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Computer system/Network
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| Research Institution | Chiba University |
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Principal Investigator |
KITAKAMI Masato 千葉大学, 融合科学研究科(研究院), 准教授 (20282832)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 誤り訂正符号 / フラッシュメモリ / 単方向誤り / 多レベルフラッシュメモリ |
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| Research Abstract |
This research proposes dependable and long lifetime disk systems based on flash memories.This proposes neighboring error correcting code for dependability, and garbage correction for long lifetime.
Neighboring error correcting code corrects errors to neighboring values. This code requires small check symbols by restricting error patterns.
Garbage correction discriminates between frequently updated data and non-frequently updated data. By changing the position for the former data sometimes in flash memory chips, the number of erasure in the specified cells is restricted. From this, life time of flash memories is extended.
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