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

本研究提出基于快闪记忆体的可靠且长寿命的磁碟系统。这就提出了相邻纠错码的可靠性和垃圾纠错的长生命周期。相邻纠错码将错误纠正到相邻值。此代码通过限制错误模式要求使用小的检查符号。垃圾校正区分频繁更新的数据和不频繁更新的数据。有时通过改变前一种数据在闪存芯片中的位置，可以限制指定单元中的擦除次数。由此，闪存的寿命得以延长。

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.