JP5404181B2 - 光ディスク装置 - Google Patents

光ディスク装置 Download PDF

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Publication number
JP5404181B2
JP5404181B2 JP2009125177A JP2009125177A JP5404181B2 JP 5404181 B2 JP5404181 B2 JP 5404181B2 JP 2009125177 A JP2009125177 A JP 2009125177A JP 2009125177 A JP2009125177 A JP 2009125177A JP 5404181 B2 JP5404181 B2 JP 5404181B2
Authority
JP
Japan
Prior art keywords
signal
gain
optical disc
resolution
super
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP2009125177A
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English (en)
Japanese (ja)
Other versions
JP2010272188A5 (enExample
JP2010272188A (ja
Inventor
賢也 中井
正幸 大牧
伸夫 竹下
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2009125177A priority Critical patent/JP5404181B2/ja
Priority to US13/258,538 priority patent/US8339909B2/en
Priority to CN201080018641.XA priority patent/CN102414748B/zh
Priority to PCT/JP2010/003430 priority patent/WO2010137270A1/ja
Priority to DE112010002078.7T priority patent/DE112010002078B4/de
Publication of JP2010272188A publication Critical patent/JP2010272188A/ja
Publication of JP2010272188A5 publication Critical patent/JP2010272188A5/ja
Application granted granted Critical
Publication of JP5404181B2 publication Critical patent/JP5404181B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • 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
    • G11B20/10018—Improvement or modification of read or write signals analog processing for digital recording or reproduction
    • G11B20/10027—Improvement or modification of read or write signals analog processing for digital recording or reproduction adjusting the signal strength during recording or reproduction, e.g. variable gain amplifiers
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10305—Improvement or modification of read or write signals signal quality assessment
    • G11B20/10398—Improvement or modification of read or write signals signal quality assessment jitter, timing deviations or phase and frequency errors
    • G11B20/10416—Improvement or modification of read or write signals signal quality assessment jitter, timing deviations or phase and frequency errors by verifying the timing of peak values
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G11B2220/2595—Super-resolution optical discs, i.e. optical discs wherein the size of marks is below the optical diffraction limit

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
JP2009125177A 2009-05-25 2009-05-25 光ディスク装置 Expired - Fee Related JP5404181B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2009125177A JP5404181B2 (ja) 2009-05-25 2009-05-25 光ディスク装置
US13/258,538 US8339909B2 (en) 2009-05-25 2010-05-21 Optical disc device
CN201080018641.XA CN102414748B (zh) 2009-05-25 2010-05-21 光盘装置
PCT/JP2010/003430 WO2010137270A1 (ja) 2009-05-25 2010-05-21 光ディスク装置
DE112010002078.7T DE112010002078B4 (de) 2009-05-25 2010-05-21 Optikdiscvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009125177A JP5404181B2 (ja) 2009-05-25 2009-05-25 光ディスク装置

Publications (3)

Publication Number Publication Date
JP2010272188A JP2010272188A (ja) 2010-12-02
JP2010272188A5 JP2010272188A5 (enExample) 2012-07-05
JP5404181B2 true JP5404181B2 (ja) 2014-01-29

Family

ID=43222398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009125177A Expired - Fee Related JP5404181B2 (ja) 2009-05-25 2009-05-25 光ディスク装置

Country Status (5)

Country Link
US (1) US8339909B2 (enExample)
JP (1) JP5404181B2 (enExample)
CN (1) CN102414748B (enExample)
DE (1) DE112010002078B4 (enExample)
WO (1) WO2010137270A1 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5404181B2 (ja) 2009-05-25 2014-01-29 三菱電機株式会社 光ディスク装置
CN110415732B (zh) * 2018-04-26 2021-03-30 中国科学院上海光学精密机械研究所 一种超分辨光盘的径向伺服装置及其伺服控制方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5982337U (ja) * 1982-11-22 1984-06-04 ソニー株式会社 光学式ピツクアツプ
DE60106987T2 (de) * 2000-01-06 2005-03-31 Samsung Electronics Co., Ltd., Suwon Opischer Abtastkopf
JP4024559B2 (ja) * 2002-03-04 2007-12-19 独立行政法人産業技術総合研究所 光再生装置および光再生方法
JP4171969B2 (ja) * 2002-08-15 2008-10-29 独立行政法人産業技術総合研究所 光再生装置
US7830766B2 (en) * 2006-03-14 2010-11-09 Ricoh Company, Ltd. Data reproduction method and apparatus, disk, and recording/reproduction apparatus, using PRML method
JP4580380B2 (ja) 2006-12-28 2010-11-10 株式会社日立製作所 光ディスク装置
JP5320567B2 (ja) 2007-03-29 2013-10-23 独立行政法人国立高等専門学校機構 光ディスク用再生等化方法および再生等化回路
JP4500949B2 (ja) 2007-05-11 2010-07-14 独立行政法人産業技術総合研究所 光ディスクの信号処理方法及び装置
JP5404181B2 (ja) 2009-05-25 2014-01-29 三菱電機株式会社 光ディスク装置

Also Published As

Publication number Publication date
US20120014237A1 (en) 2012-01-19
WO2010137270A1 (ja) 2010-12-02
US8339909B2 (en) 2012-12-25
JP2010272188A (ja) 2010-12-02
DE112010002078B4 (de) 2021-10-28
DE112010002078T5 (de) 2012-09-13
CN102414748B (zh) 2014-07-16
CN102414748A (zh) 2012-04-11

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