KR101509851B1 - 하드디스크 드라이브에서 선택적 데이터 유지 디코딩을 위한 방법 및 장치 - Google Patents

하드디스크 드라이브에서 선택적 데이터 유지 디코딩을 위한 방법 및 장치 Download PDF

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KR101509851B1
KR101509851B1 KR1020117007252A KR20117007252A KR101509851B1 KR 101509851 B1 KR101509851 B1 KR 101509851B1 KR 1020117007252 A KR1020117007252 A KR 1020117007252A KR 20117007252 A KR20117007252 A KR 20117007252A KR 101509851 B1 KR101509851 B1 KR 101509851B1
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South Korea
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segment
signal
segments
reliability metric
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KR20110069794A (ko
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징펭 리우
샤오후아 양
홍웨이 송
유안 싱 리
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엘에스아이 코포레이션
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Assigned to 아바고 테크놀로지스 제너럴 아이피 (싱가포르) 피티이 리미티드 reassignment 아바고 테크놀로지스 제너럴 아이피 (싱가포르) 피티이 리미티드 권리의 전부이전등록 Assignors: 엘에스아이 코포레이션
Assigned to 아바고 테크놀로지스 인터내셔널 세일즈 피티이 리미티드 reassignment 아바고 테크놀로지스 인터내셔널 세일즈 피티이 리미티드 권리의 전부이전등록 Assignors: 아바고 테크놀로지스 제너럴 아이피 (싱가포르) 피티이 리미티드
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    • 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

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  • 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)
KR1020117007252A 2008-09-30 2008-12-23 하드디스크 드라이브에서 선택적 데이터 유지 디코딩을 위한 방법 및 장치 Expired - Fee Related KR101509851B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/241,919 2008-09-30
US12/241,919 US8225183B2 (en) 2008-09-30 2008-09-30 Methods and apparatus for selective data retention decoding in a hard disk drive
PCT/US2008/088224 WO2010039161A2 (en) 2008-09-30 2008-12-23 Methods and apparatus for selective data retention decoding in a hard disk drive

Publications (2)

Publication Number Publication Date
KR20110069794A KR20110069794A (ko) 2011-06-23
KR101509851B1 true KR101509851B1 (ko) 2015-04-06

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KR1020117007252A Expired - Fee Related KR101509851B1 (ko) 2008-09-30 2008-12-23 하드디스크 드라이브에서 선택적 데이터 유지 디코딩을 위한 방법 및 장치

Country Status (7)

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

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
EP4317431A3 (en) 2017-01-27 2024-05-22 A-Clip Institute, Co., Ltd. Preventive and/or therapeutic agent for 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
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

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
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
WO2004053873A1 (ja) * 2002-12-10 2004-06-24 Fujitsu Limited データ記録再生システム
EP1597667A4 (en) * 2003-02-26 2009-01-14 Qualcomm Inc PROGRAMMABLE INFORMATION HITCHING FOR ITERATIVE DECODING
US8341506B2 (en) * 2007-03-30 2012-12-25 HGST Netherlands B.V. Techniques for correcting errors using 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
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

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Publication number Publication date
CN102165526A (zh) 2011-08-24
CN102165526B (zh) 2013-11-27
TW201013656A (en) 2010-04-01
KR20110069794A (ko) 2011-06-23
JP5710486B2 (ja) 2015-04-30
US8225183B2 (en) 2012-07-17
WO2010039161A3 (en) 2010-09-16
JP2014063563A (ja) 2014-04-10
TWI455120B (zh) 2014-10-01
JP2012504299A (ja) 2012-02-16
US20100083075A1 (en) 2010-04-01
WO2010039161A2 (en) 2010-04-08
EP2356655A2 (en) 2011-08-17

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