Reserch on dependable and long-life solid disc system using flash memories

提出了一种基于闪存的可靠长寿命磁盘系统，提出了可靠性邻接纠错码和长寿命垃圾纠错码，邻接纠错码将错误纠正为邻近值。该编码通过限制错误模式来要求较小的校验符号。垃圾纠正区分频繁更新的数据和非频繁更新的数据。通过有时在闪存芯片中改变先前数据的位置，限制了指定单元中的擦除次数。由此，延长了闪存的寿命。

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.