基本信息:
- 专利标题： MIXED GRANULARITY HIGHER-LEVEL REDUNDANCY FOR NON-VOLATILE MEMORY
- 专利标题（中）：MISCHGRANULARITÄT与主冗余非易失性存储器
- 申请号：EP13825514.6 申请日：2013-07-23
- 公开(公告)号：EP2880533A1 公开(公告)日：2015-06-10
- 发明人： CHEN, Zhengang , WU, Yunxiang
- 申请人： Seagate Technology LLC
- 申请人地址： 10200 South De Anza Blvd. Mail Station: CPCA03C17 Cupertino, CA 95014 US
- 专利权人： Seagate Technology LLC
- 当前专利权人： Seagate Technology LLC
- 当前专利权人地址： 10200 South De Anza Blvd. Mail Station: CPCA03C17 Cupertino, CA 95014 US
- 代理机构： Beck Greener
- 优先权： US201213565752 20120802
- 国际公布： WO2014022159 20140206
- 主分类号： G06F11/08
- IPC分类号： G06F11/08 ; G06F12/00
摘要：
Mixed-granularity higher-level redundancy for NVM provides improved higher-level redundancy operation with better error recovery and/or reduced redundancy information overhead. For example, pages of the NVM that are less reliable, such as relatively more prone to errors, are operated in higher-level redundancy modes having relatively more error protection, at a cost of relatively more redundancy information. Concurrently, blocks of the NVM that are more reliable are operated in higher-level redundancy modes having relatively less error protection, at a cost of relatively less redundancy information. Compared to techniques that operate the entirety of the NVM in the higher-level redundancy modes having relatively less error protection, techniques described herein provide better error recovery. Compared to techniques that operate the entirety of the NVM in the higher-level redundancy modes having relatively more error protection, the techniques described herein provide reduced redundancy information overhead.