JP5057925B2 - デジタル情報再生方法 - Google Patents

デジタル情報再生方法 Download PDF

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Publication number
JP5057925B2
JP5057925B2 JP2007271587A JP2007271587A JP5057925B2 JP 5057925 B2 JP5057925 B2 JP 5057925B2 JP 2007271587 A JP2007271587 A JP 2007271587A JP 2007271587 A JP2007271587 A JP 2007271587A JP 5057925 B2 JP5057925 B2 JP 5057925B2
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JP
Japan
Prior art keywords
bit
information
bit pattern
parity check
pattern
Prior art date
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Expired - Fee Related
Application number
JP2007271587A
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English (en)
Japanese (ja)
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JP2009099229A (ja
JP2009099229A5 (enExample
Inventor
浩行 峯邑
俊通 新谷
由美子 安齋
宗一郎 江藤
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Hitachi Ltd
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Hitachi Ltd
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Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2007271587A priority Critical patent/JP5057925B2/ja
Priority to US12/153,328 priority patent/US8095844B2/en
Priority to EP08016154A priority patent/EP2051255A3/en
Priority to CN2008101660094A priority patent/CN101414472B/zh
Publication of JP2009099229A publication Critical patent/JP2009099229A/ja
Publication of JP2009099229A5 publication Critical patent/JP2009099229A5/ja
Application granted granted Critical
Publication of JP5057925B2 publication Critical patent/JP5057925B2/ja
Expired - Fee Related legal-status Critical Current
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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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
    • G11B20/10101—PR2 or PR(1,2,1), i.e. partial response class 2, polynomial (1+D)2=1+2D+D2
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
    • G11B20/10277—Improvement or modification of read or write signals bit detection or demodulation methods the demodulation process being specifically adapted to partial response channels, e.g. PRML decoding
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10305—Improvement or modification of read or write signals signal quality assessment
    • G11B20/10453—Improvement or modification of read or write signals signal quality assessment physical shape of recording marks, e.g. their length, width, depth or contour
    • 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
    • G11B20/1803—Error detection or correction; Testing, e.g. of drop-outs by redundancy in data representation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M5/00—Conversion of the form of the representation of individual digits
    • H03M5/02—Conversion to or from representation by pulses
    • H03M5/04—Conversion to or from representation by pulses the pulses having two levels
    • H03M5/14—Code representation, e.g. transition, for a given bit cell depending on the information in one or more adjacent bit cells, e.g. delay modulation code, double density code
    • H03M5/145—Conversion to or from block codes or representations thereof

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Pure & Applied Mathematics (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
JP2007271587A 2007-10-18 2007-10-18 デジタル情報再生方法 Expired - Fee Related JP5057925B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2007271587A JP5057925B2 (ja) 2007-10-18 2007-10-18 デジタル情報再生方法
US12/153,328 US8095844B2 (en) 2007-10-18 2008-05-16 Digital information reproduction method
EP08016154A EP2051255A3 (en) 2007-10-18 2008-09-12 Digital information reproduction method
CN2008101660094A CN101414472B (zh) 2007-10-18 2008-09-28 数字信息再生方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007271587A JP5057925B2 (ja) 2007-10-18 2007-10-18 デジタル情報再生方法

Publications (3)

Publication Number Publication Date
JP2009099229A JP2009099229A (ja) 2009-05-07
JP2009099229A5 JP2009099229A5 (enExample) 2010-08-05
JP5057925B2 true JP5057925B2 (ja) 2012-10-24

Family

ID=40039955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007271587A Expired - Fee Related JP5057925B2 (ja) 2007-10-18 2007-10-18 デジタル情報再生方法

Country Status (4)

Country Link
US (1) US8095844B2 (enExample)
EP (1) EP2051255A3 (enExample)
JP (1) JP5057925B2 (enExample)
CN (1) CN101414472B (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2010011641A (es) 2008-10-09 2010-11-25 Panasonic Corp Metodo de grabacion optica, dispositivo de grabacion optica, dispositivo de exposicion al medio original, medio de grabacion de informacion optica y metodo de reproduccion.
WO2010067496A1 (ja) * 2008-12-09 2010-06-17 パナソニック株式会社 光記録方法、光記録装置、原盤露光装置、光学的情報記録媒体および再生方法
JP4764939B2 (ja) * 2009-04-14 2011-09-07 株式会社日立製作所 記録条件の調整方法及び光ディスク装置
JP4959749B2 (ja) * 2009-05-08 2012-06-27 株式会社日立製作所 記録条件の調整方法及び光ディスク装置
JP5469390B2 (ja) * 2009-07-15 2014-04-16 日立コンシューマエレクトロニクス株式会社 再生信号評価方法及び記録調整方法
JP4812881B2 (ja) * 2010-01-20 2011-11-09 日立コンシューマエレクトロニクス株式会社 記録条件の調整方法及び光ディスク装置
CN102473439B (zh) * 2010-04-20 2015-05-27 松下电器产业株式会社 信息再生方法、信息记录方法及信息记录介质
WO2014196264A1 (ja) * 2013-06-07 2014-12-11 シャープ株式会社 光情報記録媒体、再生方法、及び再生装置
WO2016139863A1 (ja) * 2015-03-04 2016-09-09 ソニー株式会社 データ検出装置、再生装置、データ検出方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0301225D0 (en) 2003-01-20 2003-02-19 Univ Sunderland Surface layer immuno-chromatography
JP2005100526A (ja) 2003-09-25 2005-04-14 Hitachi Ltd デバイスの製造方法及び観察方法
JP4313755B2 (ja) * 2004-05-07 2009-08-12 株式会社日立製作所 再生信号の評価方法および光ディスク装置
JP4349248B2 (ja) * 2004-10-04 2009-10-21 株式会社日立製作所 光情報記録媒体、その再生方法及びその製造方法
JP4045269B2 (ja) * 2004-10-20 2008-02-13 株式会社日立製作所 記録方法及び光ディスク装置
JP2006134385A (ja) * 2004-11-02 2006-05-25 Sony Corp 光ディスク製造方法及び装置、光ディスク、並びに、光ディスク再生方法及び装置
JP4595574B2 (ja) * 2005-02-07 2010-12-08 ソニー株式会社 復号装置および方法、並びにプログラム
JP2007271587A (ja) 2006-03-31 2007-10-18 Mikio Futaki 杭の健全性診断方法、掘削装置、杭の損傷検出装置
JP4930760B2 (ja) * 2006-04-28 2012-05-16 ソニー株式会社 変調装置および方法、並びに記録媒体
US7958429B2 (en) * 2007-07-02 2011-06-07 Broadcom Corporation Distributed processing LDPC (low density parity check) decoder

Also Published As

Publication number Publication date
US20090106627A1 (en) 2009-04-23
CN101414472B (zh) 2011-08-24
JP2009099229A (ja) 2009-05-07
CN101414472A (zh) 2009-04-22
US8095844B2 (en) 2012-01-10
EP2051255A3 (en) 2012-08-22
EP2051255A2 (en) 2009-04-22

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