JP3725127B2 - チルト補正方法、チルト駆動信号生成回路及びチルト補正装置、並びに光ディスク装置 - Google Patents

チルト補正方法、チルト駆動信号生成回路及びチルト補正装置、並びに光ディスク装置 Download PDF

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Publication number
JP3725127B2
JP3725127B2 JP2003033478A JP2003033478A JP3725127B2 JP 3725127 B2 JP3725127 B2 JP 3725127B2 JP 2003033478 A JP2003033478 A JP 2003033478A JP 2003033478 A JP2003033478 A JP 2003033478A JP 3725127 B2 JP3725127 B2 JP 3725127B2
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JP
Japan
Prior art keywords
signal
tilt
tilt correction
objective lens
characteristic
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
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JP2003033478A
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English (en)
Japanese (ja)
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JP2004246945A5 (enExample
JP2004246945A (ja
Inventor
浩 武田
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.)
Ricoh Co Ltd
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Ricoh Co Ltd
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Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2003033478A priority Critical patent/JP3725127B2/ja
Priority to US10/774,395 priority patent/US7212475B2/en
Publication of JP2004246945A publication Critical patent/JP2004246945A/ja
Publication of JP2004246945A5 publication Critical patent/JP2004246945A5/ja
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Publication of JP3725127B2 publication Critical patent/JP3725127B2/ja
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Expired - Fee Related legal-status Critical Current

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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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc

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  • Optical Recording Or Reproduction (AREA)
JP2003033478A 2003-02-12 2003-02-12 チルト補正方法、チルト駆動信号生成回路及びチルト補正装置、並びに光ディスク装置 Expired - Fee Related JP3725127B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2003033478A JP3725127B2 (ja) 2003-02-12 2003-02-12 チルト補正方法、チルト駆動信号生成回路及びチルト補正装置、並びに光ディスク装置
US10/774,395 US7212475B2 (en) 2003-02-12 2004-02-10 Method and apparatus for tilt correction and tilt driving signal generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003033478A JP3725127B2 (ja) 2003-02-12 2003-02-12 チルト補正方法、チルト駆動信号生成回路及びチルト補正装置、並びに光ディスク装置

Publications (3)

Publication Number Publication Date
JP2004246945A JP2004246945A (ja) 2004-09-02
JP2004246945A5 JP2004246945A5 (enExample) 2005-05-19
JP3725127B2 true JP3725127B2 (ja) 2005-12-07

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ID=32820987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003033478A Expired - Fee Related JP3725127B2 (ja) 2003-02-12 2003-02-12 チルト補正方法、チルト駆動信号生成回路及びチルト補正装置、並びに光ディスク装置

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US (1) US7212475B2 (enExample)
JP (1) JP3725127B2 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007004854A (ja) * 2005-06-22 2007-01-11 Hitachi Ltd 光ディスク装置
JP4816033B2 (ja) * 2005-12-01 2011-11-16 船井電機株式会社 光ディスク記録再生装置
US20110153466A1 (en) * 2009-12-17 2011-06-23 Divyasimha Harish Sensor based inventory management system and method
KR20080057484A (ko) * 2006-12-20 2008-06-25 삼성전자주식회사 광픽업 액츄에이터
TWI440026B (zh) * 2011-09-16 2014-06-01 Sunplus Technology Co Ltd 資料還原裝置與方法
JP2014093116A (ja) * 2012-11-07 2014-05-19 Funai Electric Co Ltd レンズ駆動装置及び光ピックアップ

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141636A (ja) 1985-12-16 1987-06-25 Seiko Instr & Electronics Ltd オ−トフオ−カス装置
JPH01213837A (ja) 1988-02-22 1989-08-28 Konica Corp 光ピックアップ
US5805543A (en) * 1995-02-22 1998-09-08 Matsushita Electric Industrial Co., Ltd. Tilt control apparatus based on pulsed width detection of an information reproduced signal
JPH09282693A (ja) 1996-04-15 1997-10-31 Nec Corp 光学ヘッド装置
SG72954A1 (en) 1998-05-21 2000-05-23 Samsung Electronics Co Ltd Optical pickup
JP2000260042A (ja) 1999-01-08 2000-09-22 Ricoh Co Ltd 光ディスク装置におけるキャリッジ送り制御装置
US6661769B2 (en) * 2000-09-29 2003-12-09 Matsushita Electric Industrial Co., Ltd. Optical storage medium, a tilt detection apparatus, and a data recording and reproducing apparatus
US7480219B2 (en) * 2000-11-21 2009-01-20 Lg Electronics Inc. Method and apparatus for calculating a variation per track of a focus error to control the tilt of a disk
JP2002163834A (ja) * 2000-11-24 2002-06-07 Matsushita Electric Ind Co Ltd 光ディスク装置、レンズシフト量算出方法、媒体、および情報集合体

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Publication number Publication date
US7212475B2 (en) 2007-05-01
US20040156278A1 (en) 2004-08-12
JP2004246945A (ja) 2004-09-02

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