TW200739564A - Optical disc device - Google Patents

Optical disc device

Info

Publication number
TW200739564A
TW200739564A TW095135459A TW95135459A TW200739564A TW 200739564 A TW200739564 A TW 200739564A TW 095135459 A TW095135459 A TW 095135459A TW 95135459 A TW95135459 A TW 95135459A TW 200739564 A TW200739564 A TW 200739564A
Authority
TW
Taiwan
Prior art keywords
object layer
optical disc
detect
material thickness
focus control
Prior art date
Application number
TW095135459A
Other languages
English (en)
Inventor
Hitoshi Andoh
Original Assignee
Matsushita Electric Ind Co 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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of TW200739564A publication Critical patent/TW200739564A/zh

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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus pull-in only
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
TW095135459A 2005-09-30 2006-09-26 Optical disc device TW200739564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005285725A JP2007095218A (ja) 2005-09-30 2005-09-30 光ディスク装置

Publications (1)

Publication Number Publication Date
TW200739564A true TW200739564A (en) 2007-10-16

Family

ID=37906045

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095135459A TW200739564A (en) 2005-09-30 2006-09-26 Optical disc device

Country Status (3)

Country Link
JP (1) JP2007095218A (zh)
TW (1) TW200739564A (zh)
WO (1) WO2007040001A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8559282B2 (en) 2008-03-20 2013-10-15 Mediatek Inc. Average servo control method and system, and target level determination method applied in thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4724624B2 (ja) * 2006-08-29 2011-07-13 パイオニア株式会社 光ディスク装置
JP2009134784A (ja) * 2007-11-29 2009-06-18 Tdk Corp 多層光記録媒体、光記録再生方法
JP5587247B2 (ja) 2010-06-08 2014-09-10 パナソニック株式会社 多層光ディスクにおける層間ジャンプ方法および光ディスク装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000200430A (ja) * 1996-12-25 2000-07-18 Sanyo Electric Co Ltd 光ディスク装置
CN1146877C (zh) * 1999-06-28 2004-04-21 索尼公司 聚焦伺服引入方法及聚焦伺服装置
JP2002056547A (ja) * 2000-08-09 2002-02-22 Alpine Electronics Inc ディスク再生装置のトラッキングサーボ制御方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8559282B2 (en) 2008-03-20 2013-10-15 Mediatek Inc. Average servo control method and system, and target level determination method applied in thereof
TWI471859B (zh) * 2008-03-20 2015-02-01 Mediatek Inc 平均伺服控制方法、平均伺服控制系統以及目標位準估測方法

Also Published As

Publication number Publication date
JP2007095218A (ja) 2007-04-12
WO2007040001A1 (ja) 2007-04-12

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