Invention Grant
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
- Patent Title: Data storage device tracking log-likelihood ratio for a decoder based on past performance
- Patent Title (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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Application No.: US13493856Application Date: 2012-06-11
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Publication No.: US08856615B1Publication Date: 2014-10-07
- Inventor: Anantha Raman Krishnan , Shayan S. Garani , Kent D. Anderson , Shafa Dahandeh
- Applicant: Anantha Raman Krishnan , Shayan S. Garani , Kent D. Anderson , Shafa Dahandeh
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: G11C29/42
- IPC: G11C29/42 ; H03M13/29 ; G11C29/54 ; G06F11/10
Abstract:
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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