发明授权
US08856615B1 Data storage device tracking log-likelihood ratio for a decoder based on past performance
有权
数据存储设备基于过去的性能跟踪解码器的对数似然比
- 专利标题： Data storage device tracking log-likelihood ratio for a decoder based on past performance
- 专利标题（中）： 数据存储设备基于过去的性能跟踪解码器的对数似然比
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申请号： US13493856申请日： 2012-06-11
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公开(公告)号： US08856615B1公开(公告)日： 2014-10-07
- 发明人: Anantha Raman Krishnan , Shayan S. Garani , Kent D. Anderson , Shafa Dahandeh
- 申请人： Anantha Raman Krishnan , Shayan S. Garani , Kent D. Anderson , Shafa Dahandeh
- 申请人地址： US CA Irvine
- 专利权人： Western Digital Technologies, Inc.
- 当前专利权人： Western Digital Technologies, Inc.
- 当前专利权人地址： US CA Irvine
- 主分类号： G11C29/42
- IPC分类号： G11C29/42 ; H03M13/29 ; G11C29/54 ; G06F11/10
摘要：
A data storage device is disclosed comprising a non-volatile memory (NVM). First data is written to a first area of the NVM, and a first estimated data sequence is read from the first area of the NVM. The first estimated data sequence is first decoded, and a log-likelihood ratio (LLR) is first updated based on the first decode. Second data is written to a second area of the NVM, and a second estimated data sequence is read from the second area of the non-volatile memory. The second estimated data sequence is second decoded in response to the first updated LLR, and the LLR is second updated based on the second decode.
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