发明名称 |
Method of writing, erasing, and controlling memory for memory device |
摘要 |
Data transferred from a host computer to a memory device is written into sectors whose addresses in a memory area are decoded by a decode table. Old data to be updated by the above data is erased or marked with erase flags. At a predetermined point of time, in order to create free areas, necessary data is evacuated to a primary memory media and unnecessary data indicated by erase flags is erased by a unit of predetermined memory size. Part of the memory media which has become defective is marked with a defect flag, and is replaced by an alternate area. In doing so, the decode table is rewritten to arrange the memory area.
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申请公布号 |
US6766409(B2) |
申请公布日期 |
2004.07.20 |
申请号 |
US20030446810 |
申请日期 |
2003.05.29 |
申请人 |
FUJITSU LIMITED |
发明人 |
KOMATSU SHINPEI;ISHII YUMI;HAYASHI TOMOHIRO;SHIBAZAKI SHOGO;ITOH HIROYUKI;TAKEHARA MASARU |
分类号 |
G11C16/02;G06F12/00;G06F12/02;G11C16/06;G11C29/00;G11C29/04;(IPC1-7):G06F13/00 |
主分类号 |
G11C16/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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