Invention Grant
US08719668B2 Non-volatile storage system compensating prior probability for low-density parity check codes
失效
非易失性存储系统补偿低密度奇偶校验码的先验概率
- Patent Title: Non-volatile storage system compensating prior probability for low-density parity check codes
- Patent Title (中): 非易失性存储系统补偿低密度奇偶校验码的先验概率
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Application No.: US13321462Application Date: 2011-11-01
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Publication No.: US08719668B2Publication Date: 2014-05-06
- Inventor: Akiyoshi Hashimoto , Akifumi Suzuki , Takashi Tsunehiro
- Applicant: Akiyoshi Hashimoto , Akifumi Suzuki , Takashi Tsunehiro
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- International Application: PCT/JP2011/006109 WO 20111101
- International Announcement: WO2013/065085 WO 20130510
- Main IPC: H03M13/00
- IPC: H03M13/00 ; G11C29/00 ; G06F11/00
Abstract:
Provided in one embodiment is a nonvolatile storage system having multiple nonvolatile storage media and a controller coupled to the multiple nonvolatile storage media. The controller has a storage area configured to store management information including probability management information denoting error probability information of a unit physical area in a nonvolatile storage medium, and an error correcting circuit configured to carry out coding and decoding by a low density parity check code. The controller, in a data read process, is configured to identify based on management information an error probability, uses the identified error probability to correct the read data using the error correcting circuit.
Public/Granted literature
- US20130111299A1 NON-VOLATILE STORAGE SYSTEM COMPENSATING PRIOR PROBABILITY FOR LOW-DENSITY PARITY CHECK CODES Public/Granted day:2013-05-02
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