ATE547789T1 - Optisches informationswiedergabeverfahren und optische informationswiedergabevorrichtung - Google Patents

Optisches informationswiedergabeverfahren und optische informationswiedergabevorrichtung

Info

Publication number
ATE547789T1
ATE547789T1 AT08015471T AT08015471T ATE547789T1 AT E547789 T1 ATE547789 T1 AT E547789T1 AT 08015471 T AT08015471 T AT 08015471T AT 08015471 T AT08015471 T AT 08015471T AT E547789 T1 ATE547789 T1 AT E547789T1
Authority
AT
Austria
Prior art keywords
reproduction
signal
optical information
information reproduction
reproduction power
Prior art date
Application number
AT08015471T
Other languages
English (en)
Inventor
Toshimichi Shintani
Hiroyuki Minemura
Soichiro Eto
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
Application granted granted Critical
Publication of ATE547789T1 publication Critical patent/ATE547789T1/de

Links

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
    • G11B7/08—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)
AT08015471T 2007-09-20 2008-09-02 Optisches informationswiedergabeverfahren und optische informationswiedergabevorrichtung ATE547789T1 (de)

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 (1)

Publication Number Publication Date
ATE547789T1 true ATE547789T1 (de) 2012-03-15

Family

ID=40042864

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08015471T ATE547789T1 (de) 2007-09-20 2008-09-02 Optisches informationswiedergabeverfahren und optische informationswiedergabevorrichtung

Country Status (5)

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

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
EP2246854A1 (de) * 2009-04-28 2010-11-03 Thomson Licensing Optisches Speichermedium, das Spuren mit verschiedenen Modulationscodes umfasst, und entsprechende Vorrichtung zum Lesen von Daten
WO2010125015A1 (en) 2009-04-28 2010-11-04 Thomson Licensing Optical storage medium comprising tracks with modified mark dimensions, 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 (de) 2010-09-08 2012-03-14 Thomson Licensing Verfahren und System zur Bestimmung der Qualität eines Speichersystems
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
KR100364193B1 (ko) * 1999-04-26 2002-12-11 샤프 가부시키가이샤 광기록 장치, 광재생 장치 및 광기록 매체
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
EP2040255B1 (de) 2012-02-29
JP4778940B2 (ja) 2011-09-21
US20090080311A1 (en) 2009-03-26
CN101393755A (zh) 2009-03-25
EP2040255A3 (de) 2009-05-06
JP2009076134A (ja) 2009-04-09
EP2040255A2 (de) 2009-03-25
CN101393755B (zh) 2011-12-07
US7933179B2 (en) 2011-04-26

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