JP4778940B2 - 光情報再生方法及び光情報再生装置 - Google Patents

光情報再生方法及び光情報再生装置 Download PDF

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Publication number
JP4778940B2
JP4778940B2 JP2007243221A JP2007243221A JP4778940B2 JP 4778940 B2 JP4778940 B2 JP 4778940B2 JP 2007243221 A JP2007243221 A JP 2007243221A JP 2007243221 A JP2007243221 A JP 2007243221A JP 4778940 B2 JP4778940 B2 JP 4778940B2
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JP
Japan
Prior art keywords
signal
power
reproduction
optical
resolution
Prior art date
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Expired - Fee Related
Application number
JP2007243221A
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English (en)
Japanese (ja)
Other versions
JP2009076134A (ja
JP2009076134A5 (enExample
Inventor
俊通 新谷
浩行 峯邑
宗一郎 江藤
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 JP2007243221A priority Critical patent/JP4778940B2/ja
Priority to US12/102,909 priority patent/US7933179B2/en
Priority to EP08015471A priority patent/EP2040255B1/en
Priority to AT08015471T priority patent/ATE547789T1/de
Priority to CN200810213144XA priority patent/CN101393755B/zh
Publication of JP2009076134A publication Critical patent/JP2009076134A/ja
Publication of JP2009076134A5 publication Critical patent/JP2009076134A5/ja
Application granted granted Critical
Publication of JP4778940B2 publication Critical patent/JP4778940B2/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
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0945—Methods for initialising servos, start-up sequences
    • 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
    • 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
    • G11B7/1267—Power calibration
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP2007243221A 2007-09-20 2007-09-20 光情報再生方法及び光情報再生装置 Expired - Fee Related JP4778940B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2007243221A JP4778940B2 (ja) 2007-09-20 2007-09-20 光情報再生方法及び光情報再生装置
US12/102,909 US7933179B2 (en) 2007-09-20 2008-04-15 Optical information reproducing method, optical information reproducing device, and optical information recording medium
EP08015471A EP2040255B1 (en) 2007-09-20 2008-09-02 Optical information reproducing method and optical information reproducing device
AT08015471T ATE547789T1 (de) 2007-09-20 2008-09-02 Optisches informationswiedergabeverfahren und optische informationswiedergabevorrichtung
CN200810213144XA CN101393755B (zh) 2007-09-20 2008-09-18 光信息再生方法、光信息再生装置以及光信息记录介质

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007243221A JP4778940B2 (ja) 2007-09-20 2007-09-20 光情報再生方法及び光情報再生装置

Publications (3)

Publication Number Publication Date
JP2009076134A JP2009076134A (ja) 2009-04-09
JP2009076134A5 JP2009076134A5 (enExample) 2010-05-27
JP4778940B2 true JP4778940B2 (ja) 2011-09-21

Family

ID=40042864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007243221A Expired - Fee Related JP4778940B2 (ja) 2007-09-20 2007-09-20 光情報再生方法及び光情報再生装置

Country Status (5)

Country Link
US (1) US7933179B2 (enExample)
EP (1) EP2040255B1 (enExample)
JP (1) JP4778940B2 (enExample)
CN (1) CN101393755B (enExample)
AT (1) ATE547789T1 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4720778B2 (ja) * 2007-04-25 2011-07-13 株式会社日立製作所 情報記録媒体の評価方法
EP2425429B1 (en) 2009-04-28 2014-06-11 Thomson Licensing Optical storage medium comprising tracks with modified mark dimensions, and respective apparatus for reading of data
EP2246854A1 (en) * 2009-04-28 2010-11-03 Thomson Licensing Optical storage medium comprising tracks with different modulation codes, and respective apparatus for reading of data
JP5130253B2 (ja) * 2009-05-12 2013-01-30 株式会社日立製作所 再生パワー調整方法および光情報再生装置
EP2428952A1 (en) * 2010-09-08 2012-03-14 Thomson Licensing Method and system for determining the quality of a storage system
JP6063624B2 (ja) * 2011-12-12 2017-01-18 シャープ株式会社 光情報記録媒体、再生装置および再生方法
CN108153132B (zh) * 2017-12-28 2019-06-21 电子科技大学 一种基于均值梯度函数的光学扫描全息自聚焦方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0896412A (ja) 1994-09-21 1996-04-12 Toshiba Corp 情報記録媒体
AU4322897A (en) * 1996-10-08 1998-05-05 Sanyo Electric Co., Ltd. Recording medium and information recorder/reproducer
US6584050B1 (en) * 1999-04-26 2003-06-24 Sharp Kabushiki Kaisha Optical recording device, optical reproducing device, and optical memory medium
JP4287580B2 (ja) * 1999-11-30 2009-07-01 Ｔｄｋ株式会社 光情報媒体の再生方法
JP3775564B2 (ja) * 2000-04-14 2006-05-17 シャープ株式会社 光再生装置
JP4814476B2 (ja) * 2001-04-20 2011-11-16 Ｔｄｋ株式会社 光情報媒体の再生方法
JP2003323723A (ja) 2002-04-30 2003-11-14 Sony Corp 光ディスク、光ディスク記録及び／又は再生装置及び方法、並びに光ディスクの製造方法
KR20050052606A (ko) 2003-11-28 2005-06-03 삼성전자주식회사 정보저장매체, 이에 기록된 정보재생방법 및 장치
US20050157631A1 (en) 2003-12-30 2005-07-21 Samsung Electronics Co., Ltd Information storage medium and method and apparatus for reproducing information recorded on the same
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
JP2006209898A (ja) * 2005-01-31 2006-08-10 Nec Corp 光学情報記録媒体及び光学情報再生装置
KR101244908B1 (ko) * 2005-12-20 2013-03-18 티디케이가부시기가이샤 광기록 매체에 대한 최적 재생 파워를 결정하는 방법 및 장치
JP4216293B2 (ja) * 2006-04-24 2009-01-28 Ｔｄｋ株式会社 光ディスクの再生耐久性評価方法及び情報再生装置
JP4618730B2 (ja) 2006-07-26 2011-01-26 株式会社リコー 情報再生方法及び情報再生装置
JP4903081B2 (ja) * 2007-05-17 2012-03-21 株式会社日立製作所 光ディスク媒体及びトラッキング方法
JP4996331B2 (ja) 2007-05-17 2012-08-08 株式会社荏原製作所 基板研磨装置および基板研磨方法

Also Published As

Publication number Publication date
US20090080311A1 (en) 2009-03-26
EP2040255A2 (en) 2009-03-25
ATE547789T1 (de) 2012-03-15
CN101393755B (zh) 2011-12-07
CN101393755A (zh) 2009-03-25
JP2009076134A (ja) 2009-04-09
US7933179B2 (en) 2011-04-26
EP2040255B1 (en) 2012-02-29
EP2040255A3 (en) 2009-05-06

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