Invention Grant
- Patent Title: Mixed granularity higher-level redundancy for non-volatile memory
- Patent Title (中): 非易失性存储器的混合粒度更高级冗余
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Application No.: US13565752Application Date: 2012-08-02
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Publication No.: US08856431B2Publication Date: 2014-10-07
- Inventor: Zhengang Chen , Yunxiang Wu
- Applicant: Zhengang Chen , Yunxiang Wu
- Applicant Address: US CA San Jose
- Assignee: LSI Corporation
- Current Assignee: LSI Corporation
- Current Assignee Address: US CA San Jose
- Agency: PatentVentures
- Agent Bennett Smith; Korvin Van Dyke
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
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.
Public/Granted literature
- US20140040530A1 MIXED GRANULARITY HIGHER-LEVEL REDUNDANCY FOR NON-VOLATILE MEMORY Public/Granted day:2014-02-06
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