JP5188920B2 - 光ディスク装置 - Google Patents

光ディスク装置 Download PDF

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Publication number
JP5188920B2
JP5188920B2 JP2008257808A JP2008257808A JP5188920B2 JP 5188920 B2 JP5188920 B2 JP 5188920B2 JP 2008257808 A JP2008257808 A JP 2008257808A JP 2008257808 A JP2008257808 A JP 2008257808A JP 5188920 B2 JP5188920 B2 JP 5188920B2
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JP
Japan
Prior art keywords
reproduction signal
signal
pulse
clock
frequency
Prior art date
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Expired - Fee Related
Application number
JP2008257808A
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English (en)
Japanese (ja)
Other versions
JP2010086639A5 (enExample
JP2010086639A (ja
Inventor
敦 菊川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2008257808A priority Critical patent/JP5188920B2/ja
Priority to CN2009101787117A priority patent/CN101714362B/zh
Priority to US12/572,354 priority patent/US8379497B2/en
Publication of JP2010086639A publication Critical patent/JP2010086639A/ja
Publication of JP2010086639A5 publication Critical patent/JP2010086639A5/ja
Application granted granted Critical
Publication of JP5188920B2 publication Critical patent/JP5188920B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G11B20/10009—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
    • 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
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • 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
    • G11B20/10287—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors
    • G11B20/10296—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors using the Viterbi algorithm
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP2008257808A 2008-10-02 2008-10-02 光ディスク装置 Expired - Fee Related JP5188920B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2008257808A JP5188920B2 (ja) 2008-10-02 2008-10-02 光ディスク装置
CN2009101787117A CN101714362B (zh) 2008-10-02 2009-09-25 光盘装置
US12/572,354 US8379497B2 (en) 2008-10-02 2009-10-02 Optical disk apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008257808A JP5188920B2 (ja) 2008-10-02 2008-10-02 光ディスク装置

Publications (3)

Publication Number Publication Date
JP2010086639A JP2010086639A (ja) 2010-04-15
JP2010086639A5 JP2010086639A5 (enExample) 2011-07-28
JP5188920B2 true JP5188920B2 (ja) 2013-04-24

Family

ID=42075729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008257808A Expired - Fee Related JP5188920B2 (ja) 2008-10-02 2008-10-02 光ディスク装置

Country Status (3)

Country Link
US (1) US8379497B2 (enExample)
JP (1) JP5188920B2 (enExample)
CN (1) CN101714362B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110090773A1 (en) * 2009-10-16 2011-04-21 Chih-Ching Yu Apparatus for generating viterbi-processed data using an input signal obtained from reading an optical disc
US20110090779A1 (en) * 2009-10-16 2011-04-21 Mediatek Inc. Apparatus for generating viterbi-processed data
JP2011216148A (ja) * 2010-03-31 2011-10-27 Renesas Electronics Corp 信号変換回路、及びこれに用いるサンプリング方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950012246B1 (ko) * 1993-09-25 1995-10-16 대우전자주식회사 레이저디스크 플레이어의 재생속도 조절장치
JPH087285A (ja) * 1994-06-15 1996-01-12 Sanyo Electric Co Ltd 光記録媒体の再生方法及び再生装置
JP3486145B2 (ja) * 2000-01-17 2004-01-13 松下電器産業株式会社 デジタル記録データ再生装置
JP4433438B2 (ja) 2000-07-24 2010-03-17 日本ビクター株式会社 情報再生装置および位相同期制御装置
CN1287361C (zh) * 2001-04-09 2006-11-29 松下电器产业株式会社 记录播放装置
JP2003006874A (ja) * 2001-06-27 2003-01-10 Sony Corp 光媒体再生装置及び再生方法
JP2003308624A (ja) * 2002-04-12 2003-10-31 Matsushita Electric Ind Co Ltd 光ディスク装置
JP3993818B2 (ja) * 2002-12-16 2007-10-17 松下電器産業株式会社 再生信号処理装置
CN1321382C (zh) * 2004-01-20 2007-06-13 宏达国际电子股份有限公司 串行/并行数据转换模块及相关计算机系统
KR100584598B1 (ko) * 2004-05-17 2006-05-30 삼성전자주식회사 재기록 가능 기록 매체, 기록/재생 방법, 기록/재생 장치및 싱크 검출 장치
JP4537125B2 (ja) * 2004-06-15 2010-09-01 株式会社日立製作所 光ディスク装置
JP2007073147A (ja) * 2005-09-08 2007-03-22 Hitachi Ltd 光ディスク装置及びそれに用いられる集積回路
JP4821264B2 (ja) * 2005-10-25 2011-11-24 ソニー株式会社 同期装置、同期方法及び同期プログラム並びにデータ再生装置
US8059510B2 (en) * 2006-06-02 2011-11-15 Panasonic Corporation Information reproducing device
US20100177615A1 (en) * 2007-02-21 2010-07-15 Akira Yamamoto Maximum likelihood decoder and information reproduction apparatus
JP4730325B2 (ja) * 2007-03-06 2011-07-20 株式会社日立製作所 光ディスク装置
JP5274038B2 (ja) * 2008-02-06 2013-08-28 キヤノン株式会社 垂直共振器型面発光レーザの製造方法とレーザアレイの製造方法

Also Published As

Publication number Publication date
CN101714362B (zh) 2012-10-03
US20100085858A1 (en) 2010-04-08
CN101714362A (zh) 2010-05-26
US8379497B2 (en) 2013-02-19
JP2010086639A (ja) 2010-04-15

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