Invention Grant
- Patent Title: Soft-decision input generation for data storage systems
- Patent Title (中): 数据存储系统的软判决输入生成
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Application No.: US13797923Application Date: 2013-03-12
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Publication No.: US08924824B1Publication Date: 2014-12-30
- Inventor: Guangming Lu
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: H03M13/00
- IPC: H03M13/00 ; G06F11/10
Abstract:
An error management system for a data storage device can generate soft-decision log-likelihood ratios (LLRs) using multiple reads of memory locations. 0-to-1 and 1-to-0 bit flip count data provided by multiple reads of reference memory locations can be used to generate probability data that is used to generate possible LLR values for decoding target pages. Possible LLR values are stored in one or more look-up tables.
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