发明授权
US07451380B2 Method for implementing enhanced vertical ECC storage in a dynamic random access memory
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在动态随机存取存储器中实现增强型垂直ECC存储的方法
- 专利标题: Method for implementing enhanced vertical ECC storage in a dynamic random access memory
- 专利标题(中): 在动态随机存取存储器中实现增强型垂直ECC存储的方法
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申请号: US11071086申请日: 2005-03-03
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公开(公告)号: US07451380B2公开(公告)日: 2008-11-11
- 发明人: Michael Joseph Carnevale , Steven B. Herndon , Daniel Frank Moertl
- 申请人: Michael Joseph Carnevale , Steven B. Herndon , Daniel Frank Moertl
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理商 Joan Pennington
- 主分类号: G11C29/00
- IPC分类号: G11C29/00
摘要:
A method and apparatus are provided for implementing enhanced vertical ECC storage in a dynamic random access memory. A dynamic random access memory (DRAM) is split into a plurality of groups. Each group resides inside a DRAM row address strobe (RAS) page so that multiple locations inside a group can be accessed without incurring an additional RAS access penalty. Each group is logically split into a plurality of segments for storing data with at least one segment for storing ECC for the data segments. For a write operation, data are written in a data segment and then ECC for the data are written in an ECC segment. For a read operation, ECC are read from an ECC segment, then data are read from the data segment.
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