TWI455120B - 在硬碟機中用於選擇性資料保留解碼之方法及裝置 - Google Patents

在硬碟機中用於選擇性資料保留解碼之方法及裝置 Download PDF

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Publication number
TWI455120B
TWI455120B TW098101075A TW98101075A TWI455120B TW I455120 B TWI455120 B TW I455120B TW 098101075 A TW098101075 A TW 098101075A TW 98101075 A TW98101075 A TW 98101075A TW I455120 B TWI455120 B TW I455120B
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TW
Taiwan
Prior art keywords
segment
segments
signal
read
reliability metric
Prior art date
Application number
TW098101075A
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English (en)
Chinese (zh)
Other versions
TW201013656A (en
Inventor
Jingfeng Liu
Shaohua Yang
Hongwei Song
Yuan Xing Lee
Original Assignee
Lsi Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lsi Corp filed Critical Lsi Corp
Publication of TW201013656A publication Critical patent/TW201013656A/zh
Application granted granted Critical
Publication of TWI455120B publication Critical patent/TWI455120B/zh

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
    • H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
    • H03M13/1105—Decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2948—Iterative decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2957—Turbo codes and decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63—Joint error correction and other techniques
    • H03M13/6343—Error control coding in combination with techniques for partial response channels, e.g. recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing
    • G11B2020/183—Testing wherein at least one additional attempt is made to read or write the data when a first attempt is unsuccessful
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
TW098101075A 2008-09-30 2009-01-13 在硬碟機中用於選擇性資料保留解碼之方法及裝置 TWI455120B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/241,919 US8225183B2 (en) 2008-09-30 2008-09-30 Methods and apparatus for selective data retention decoding in a hard disk drive

Publications (2)

Publication Number Publication Date
TW201013656A TW201013656A (en) 2010-04-01
TWI455120B true TWI455120B (zh) 2014-10-01

Family

ID=42008512

Family Applications (1)

Application Number Title Priority Date Filing Date
TW098101075A TWI455120B (zh) 2008-09-30 2009-01-13 在硬碟機中用於選擇性資料保留解碼之方法及裝置

Country Status (7)

Country Link
US (1) US8225183B2 (enExample)
EP (1) EP2356655A2 (enExample)
JP (2) JP5710486B2 (enExample)
KR (1) KR101509851B1 (enExample)
CN (1) CN102165526B (enExample)
TW (1) TWI455120B (enExample)
WO (1) WO2010039161A2 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8826105B2 (en) * 2012-04-12 2014-09-02 Lsi Corporation Data processing system with out of order transfer
US20190367600A1 (en) 2017-01-27 2019-12-05 A-Clip Institute, Co., Ltd. Prophylactic and/or therapeutic agent of infectious diseases or inflammatory diseases
JP7516128B2 (ja) 2020-06-23 2024-07-16 株式会社東芝 磁気ディスク装置及びリード処理方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6405342B1 (en) * 1999-09-10 2002-06-11 Western Digital Technologies, Inc. Disk drive employing a multiple-input sequence detector responsive to reliability metrics to improve a retry operation
TW200844729A (en) * 2007-03-30 2008-11-16 Hitachi Global Storage Tech Nl A data storage device, a method for correcting error in data in a data storage device using an iterative decoder, and a hard disk drive

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557482A (en) 1994-12-19 1996-09-17 International Business Machines Corporation Multipath channel apparatus and method for data storage devices and communications systems wherein a data path is selected based on errors
KR100300306B1 (ko) * 1999-05-28 2001-09-26 윤종용 무선통신 시스템에서 채널 적응형 맵 채널 복호 장치 및 방법
US6604220B1 (en) * 2000-09-28 2003-08-05 Western Digital Technologies, Inc. Disk drive comprising a multiple-input sequence detector selectively biased by bits of a decoded ECC codedword
US6518892B2 (en) * 2000-11-06 2003-02-11 Broadcom Corporation Stopping criteria for iterative decoding
US20040022336A1 (en) * 2002-08-02 2004-02-05 Xiaoyong Yu Turbo decoder with partial interference cancellation
AU2002354458A1 (en) * 2002-12-10 2004-06-30 Fujitsu Limited Data recording and reproducing system
AU2003261440C1 (en) * 2003-02-26 2010-06-03 Qualcomm Incorporated Soft information scaling for iterative decoding

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6405342B1 (en) * 1999-09-10 2002-06-11 Western Digital Technologies, Inc. Disk drive employing a multiple-input sequence detector responsive to reliability metrics to improve a retry operation
TW200844729A (en) * 2007-03-30 2008-11-16 Hitachi Global Storage Tech Nl A data storage device, a method for correcting error in data in a data storage device using an iterative decoder, and a hard disk drive

Also Published As

Publication number Publication date
US8225183B2 (en) 2012-07-17
KR101509851B1 (ko) 2015-04-06
TW201013656A (en) 2010-04-01
WO2010039161A2 (en) 2010-04-08
JP5710486B2 (ja) 2015-04-30
CN102165526B (zh) 2013-11-27
JP2014063563A (ja) 2014-04-10
JP2012504299A (ja) 2012-02-16
KR20110069794A (ko) 2011-06-23
US20100083075A1 (en) 2010-04-01
EP2356655A2 (en) 2011-08-17
CN102165526A (zh) 2011-08-24
WO2010039161A3 (en) 2010-09-16

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