ATE541288T1 - Optische kopfanordnung und optische disk- einrichtung - Google Patents

Optische kopfanordnung und optische disk- einrichtung

Info

Publication number
ATE541288T1
ATE541288T1 AT08721353T AT08721353T ATE541288T1 AT E541288 T1 ATE541288 T1 AT E541288T1 AT 08721353 T AT08721353 T AT 08721353T AT 08721353 T AT08721353 T AT 08721353T AT E541288 T1 ATE541288 T1 AT E541288T1
Authority
AT
Austria
Prior art keywords
light
information recording
recording surface
denotes
access
Prior art date
Application number
AT08721353T
Other languages
English (en)
Inventor
Hironori Nakahara
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
Application granted granted Critical
Publication of ATE541288T1 publication Critical patent/ATE541288T1/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
    • G11B7/0901—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 for track following only
    • G11B7/0903—Multi-beam tracking systems
    • 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
    • G11B7/0901—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 for track following only
    • G11B7/0906—Differential phase difference systems
    • 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
    • G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
AT08721353T 2007-05-30 2008-03-05 Optische kopfanordnung und optische disk- einrichtung ATE541288T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007142895 2007-05-30
PCT/JP2008/053933 WO2008146511A1 (ja) 2007-05-30 2008-03-05 光ヘッド装置及び光ディスク装置

Publications (1)

Publication Number Publication Date
ATE541288T1 true ATE541288T1 (de) 2012-01-15

Family

ID=40074784

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08721353T ATE541288T1 (de) 2007-05-30 2008-03-05 Optische kopfanordnung und optische disk- einrichtung

Country Status (6)

Country Link
US (1) US7995433B2 (de)
EP (1) EP2151823B1 (de)
JP (1) JP4481365B2 (de)
CN (1) CN101681642B (de)
AT (1) ATE541288T1 (de)
WO (1) WO2008146511A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5562493B2 (ja) * 2011-12-05 2014-07-30 三菱電機株式会社 光ヘッド装置及び光ディスク装置
JP5653540B2 (ja) 2012-01-06 2015-01-14 三菱電機株式会社 光ヘッド装置及び光ディスク装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194246A (ja) 1984-10-15 1986-05-13 Sony Corp 光学式ヘッドのトラッキング誤差検出方法
JPH08163095A (ja) 1994-12-01 1996-06-21 Nippon Telegr & Teleph Corp <Ntt> 光検出器および光受信装置
JP4242108B2 (ja) * 2001-06-04 2009-03-18 パナソニック株式会社 光ピックアップヘッドおよび情報記録再生装置
JP4379209B2 (ja) * 2004-06-07 2009-12-09 ソニー株式会社 光ヘッド装置、記録再生装置、トラッキングエラー信号生成方法
JP3980602B2 (ja) * 2005-03-02 2007-09-26 シャープ株式会社 収差検出装置およびそれを備えた光ピックアップ装置
CN101171629B (zh) * 2005-04-27 2010-10-06 松下电器产业株式会社 光头装置及光信息处理装置
JP2009501404A (ja) * 2005-07-13 2009-01-15 アリマ デバイシズ コーポレイション 多層光記録媒体から情報を読み出す方法及び光学読み出しデバイス
JP4449864B2 (ja) * 2005-09-02 2010-04-14 ソニー株式会社 光ディスク装置及び光ピックアップ装置
JP2007257750A (ja) * 2006-03-24 2007-10-04 Hitachi Media Electoronics Co Ltd 光ピックアップおよび光ディスク装置
US20080017481A1 (en) * 2006-07-21 2008-01-24 Benninga Dwight A Dual belt conveyor system
US8054731B2 (en) * 2006-08-29 2011-11-08 Sanyo Electric Co., Ltd. Photodetector and optical pickup apparatus

Also Published As

Publication number Publication date
EP2151823A1 (de) 2010-02-10
US20100149936A1 (en) 2010-06-17
CN101681642B (zh) 2011-07-27
EP2151823A4 (de) 2010-10-20
JP4481365B2 (ja) 2010-06-16
JPWO2008146511A1 (ja) 2010-08-19
CN101681642A (zh) 2010-03-24
WO2008146511A1 (ja) 2008-12-04
EP2151823B1 (de) 2012-01-11
US7995433B2 (en) 2011-08-09

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