JPS6194246A - 光学式ヘッドのトラッキング誤差検出方法 - Google Patents

光学式ヘッドのトラッキング誤差検出方法

Info

Publication number
JPS6194246A
JPS6194246A JP59215860A JP21586084A JPS6194246A JP S6194246 A JPS6194246 A JP S6194246A JP 59215860 A JP59215860 A JP 59215860A JP 21586084 A JP21586084 A JP 21586084A JP S6194246 A JPS6194246 A JP S6194246A
Authority
JP
Japan
Prior art keywords
tracking error
error signal
pair
beams
split
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.)
Granted
Application number
JP59215860A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0434212B2 (en, 2012
Inventor
Kiyoshi Osato
潔 大里
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP59215860A priority Critical patent/JPS6194246A/ja
Priority to AU49629/85A priority patent/AU581265B2/en
Priority to US06/878,289 priority patent/US4775968A/en
Priority to EP85904874A priority patent/EP0201603B1/en
Priority to DE8585904874T priority patent/DE3581078D1/de
Priority to AT85904874T priority patent/ATE59725T1/de
Priority to PCT/JP1985/000546 priority patent/WO1986002479A1/ja
Priority to CN85107597.5A priority patent/CN1005368B/zh
Priority to KR1019860700356A priority patent/KR930005784B1/ko
Publication of JPS6194246A publication Critical patent/JPS6194246A/ja
Publication of JPH0434212B2 publication Critical patent/JPH0434212B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0901Disposition 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
    • G11B7/0903Multi-beam tracking systems
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0943Methods and circuits for performing mathematical operations on individual detector segment outputs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/095Disposition 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
    • G11B7/0956Disposition 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

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Optical Recording Or Reproduction (AREA)
JP59215860A 1984-10-15 1984-10-15 光学式ヘッドのトラッキング誤差検出方法 Granted JPS6194246A (ja)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP59215860A JPS6194246A (ja) 1984-10-15 1984-10-15 光学式ヘッドのトラッキング誤差検出方法
AU49629/85A AU581265B2 (en) 1984-10-15 1985-10-03 Tracking error detecting system for optical head
US06/878,289 US4775968A (en) 1984-10-15 1985-10-03 Tracking error detecting system for optical head
EP85904874A EP0201603B1 (en) 1984-10-15 1985-10-03 System for detecting tracking error of an optical head
DE8585904874T DE3581078D1 (de) 1984-10-15 1985-10-03 Spurnachfuehrungsfehlerdetektorsystem eines optischen kopfes.
AT85904874T ATE59725T1 (de) 1984-10-15 1985-10-03 Spurnachfuehrungsfehlerdetektorsystem eines optischen kopfes.
PCT/JP1985/000546 WO1986002479A1 (en) 1984-10-15 1985-10-15 System for detecting tracking error of an optical head
CN85107597.5A CN1005368B (zh) 1984-10-15 1985-10-15 光学式磁头的轨道误差检出方式
KR1019860700356A KR930005784B1 (ko) 1984-10-15 1985-10-15 광학식 헤드의 트랙킹 오차 검출방식

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59215860A JPS6194246A (ja) 1984-10-15 1984-10-15 光学式ヘッドのトラッキング誤差検出方法

Publications (2)

Publication Number Publication Date
JPS6194246A true JPS6194246A (ja) 1986-05-13
JPH0434212B2 JPH0434212B2 (en, 2012) 1992-06-05

Family

ID=16679469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59215860A Granted JPS6194246A (ja) 1984-10-15 1984-10-15 光学式ヘッドのトラッキング誤差検出方法

Country Status (9)

Country Link
US (1) US4775968A (en, 2012)
EP (1) EP0201603B1 (en, 2012)
JP (1) JPS6194246A (en, 2012)
KR (1) KR930005784B1 (en, 2012)
CN (1) CN1005368B (en, 2012)
AT (1) ATE59725T1 (en, 2012)
AU (1) AU581265B2 (en, 2012)
DE (1) DE3581078D1 (en, 2012)
WO (1) WO1986002479A1 (en, 2012)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63160021A (ja) * 1986-12-23 1988-07-02 Nippon Columbia Co Ltd 光デイスク装置
JPH02149935A (ja) * 1988-11-30 1990-06-08 Nec Home Electron Ltd トラッキングエラー検出方法
WO1990013116A1 (en) * 1989-04-24 1990-11-01 Sony Corporation Optical recording/reproducing apparatus
WO1990015408A1 (en) * 1989-06-01 1990-12-13 Sony Corporation Optical recording and/or reproducing apparatus
JPH0411332A (ja) * 1990-04-27 1992-01-16 Nec Corp 光ディスク装置
US5303216A (en) * 1991-08-28 1994-04-12 Mitsubishi Denki Kabushiki Kaisha Optical recording and reproducing apparatus for tracking wobbling guide grooves
US5453962A (en) * 1992-08-20 1995-09-26 Mitsubishi Denki Kabushiki Kaisha Focus error detecting device
US5777960A (en) * 1995-05-09 1998-07-07 Ricoh Company, Ltd. Optical head device including fixed and movable deflection means
US5986984A (en) * 1995-02-20 1999-11-16 Mitsubishi Denki Kabushiki Kaisha Optical information processing device having switchable optics for use with plural media types
US7164632B2 (en) 2001-10-04 2007-01-16 Sharp Kabushiki Kaisha Optical pickup tracking error detecting method and optical pickup device
US7215609B2 (en) 2002-06-03 2007-05-08 Hitachi, Ltd. Optical reproducing apparatus
US7242648B2 (en) 2003-04-28 2007-07-10 Matsushita Electric Industrial Co., Ltd. Tracking error signal generation device, optical disc apparatus, tracking error signal generation method and tracking control method
US7379399B2 (en) 1995-06-26 2008-05-27 Pioneer Corporation Optical disc, and reading system and manufacturing method of the disc
WO2008146511A1 (ja) 2007-05-30 2008-12-04 Mitsubishi Electric Corporation 光ヘッド装置及び光ディスク装置
US7940631B2 (en) 2007-02-01 2011-05-10 Panasonic Corporation Optical pickup device
US7978586B2 (en) 2006-12-18 2011-07-12 Panasonic Corporation Optical pickup device
US7978590B2 (en) 2008-02-08 2011-07-12 Sharp Kabushiki Kaisha Optical pickup apparatus, reproducing apparatus, recording apparatus, and tracking error signal generation method
US7990834B2 (en) 2005-07-28 2011-08-02 Sharp Kabushiki Kaisha Optical pickup device recording and/or reproducing information on and/or from a plurality of kinds of recording media
US8085631B2 (en) 2009-06-05 2011-12-27 Panasonic Corporation Tracking control device, tracking control method, and optical disc apparatus
US8169863B2 (en) 2009-04-23 2012-05-01 Panasonic Corporation Tracking control device, tracking control method, and optical disc device

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8501665A (nl) * 1985-06-10 1987-01-02 Philips Nv Optische aftasteenheid met positie- en standdetektiestelsel voor een elektromagnetisch gelagerd objektief.
JPS63142531A (ja) * 1986-12-05 1988-06-14 Sony Corp 光デイスク情報記録再生装置のサ−ボ回路
DE68923833T2 (de) * 1988-06-20 1996-06-13 Mitsubishi Electric Corp Optischer Kopf mit Kippkorrekturservomechanismus.
JPH0296618U (en, 2012) * 1989-01-17 1990-08-01
JPH0354733A (ja) * 1989-07-21 1991-03-08 Sony Corp 光学記録および/または再生装置
JPH0354737A (ja) * 1989-07-24 1991-03-08 Sony Corp 光学記録および/または再生装置
JPH0383226A (ja) * 1989-08-25 1991-04-09 Sony Corp 記録媒体
JP2870127B2 (ja) * 1990-05-31 1999-03-10 ソニー株式会社 トラッキング制御方法
JPH0447532A (ja) * 1990-06-15 1992-02-17 Mitsubishi Electric Corp 光学式ヘッド
EP0468685B1 (en) * 1990-07-24 1997-09-24 Canon Kabushiki Kaisha Optical information recording-reproducing apparatus
US5150348A (en) * 1990-12-10 1992-09-22 Mitsubishi Denki Kabushiki Kaisha Tracking servo utilizing beam splitter
US5367512A (en) * 1991-04-02 1994-11-22 Mitsubishi Denki Kabushiki Kaisha Multi-beam optical recording-reproduction device with independent error detection for each beam
US5173598A (en) * 1991-05-10 1992-12-22 U.S. Philips Corporation Optical scanning beam position control system which is free of modulation by tracking error
JPH0896387A (ja) 1994-09-27 1996-04-12 Canon Inc 光学的情報記録再生装置
US5519679A (en) * 1994-10-12 1996-05-21 Eastman Kodak Company Apparatus and method for multi-spot sampled tracking in an optical data storage system
US5602693A (en) * 1994-12-14 1997-02-11 Micropolis (S) Pte Ltd. Method and apparatus for sensing position in a disk drive
US6009054A (en) * 1995-07-10 1999-12-28 Matsushita Electric Industrial Co., Ltd. Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus
DE69635395T2 (de) * 1995-07-10 2006-05-24 Matsushita Electric Industrial Co., Ltd., Kadoma Gerät zur Detektion eines Spursuchsignales und magnetisches Aufzeichnungsgerät
US6728192B1 (en) 1995-07-10 2004-04-27 Matsushita Electric Industrial Co., Ltd. Tracking error signal detection system for optical recording medium
JP3549301B2 (ja) * 1995-09-08 2004-08-04 三菱電機株式会社 光ヘッドのトラッキング誤差検出装置
TW336311B (en) * 1997-10-15 1998-07-11 Ind Tech Res Inst Method and device for focusing and tracking of an optical head
JP2000030288A (ja) * 1998-07-08 2000-01-28 Pioneer Electron Corp 光ピックアップ素子
US6111828A (en) * 1999-01-12 2000-08-29 Siros Technologies, Inc. Focus error signal generation using confocally filtered detection
US6256271B1 (en) 1999-01-12 2001-07-03 Siros Technologies, Inc. Focus error signal generation using two polarizers in confocal configuration
US6322933B1 (en) 1999-01-12 2001-11-27 Siros Technologies, Inc. Volumetric track definition for data storage media used to record data by selective alteration of a format hologram
US6269057B1 (en) 1999-01-12 2001-07-31 Siros Technologies, Inc. Focus error signal generation using a birefringent lens with confocal detection
US6288986B1 (en) 1999-01-12 2001-09-11 Siros Technologies, Inc. Focus error signal generation using a birefringent plate with confocal detection
US6563779B1 (en) 1999-06-16 2003-05-13 Siros Technologies, Inc. Tracking error signal generation using confocally filtered detection
US6322931B1 (en) 1999-07-29 2001-11-27 Siros Technologies, Inc. Method and apparatus for optical data storage using non-linear heating by excited state absorption for the alteration of pre-formatted holographic gratings
US6512606B1 (en) 1999-07-29 2003-01-28 Siros Technologies, Inc. Optical storage media and method for optical data storage via local changes in reflectivity of a format grating
US6310850B1 (en) 1999-07-29 2001-10-30 Siros Technologies, Inc. Method and apparatus for optical data storage and/or retrieval by selective alteration of a holographic storage medium
JP2001176106A (ja) * 1999-12-20 2001-06-29 Pioneer Electronic Corp ピックアップ装置とそのピックアップ装置を備えた情報記録再生装置
US6940676B1 (en) * 2000-06-07 2005-09-06 Quantum Corporation Triple push-pull optical tracking system
DE10062078A1 (de) 2000-12-13 2002-06-20 Thomson Brandt Gmbh Verfahren zum Erzeugen eines Linsenpositionssignals sowie entsprechendes Gerät zum Lesen und/oder Beschreiben eines optischen Aufzeichnungsträgers
JP2003016666A (ja) * 2001-04-24 2003-01-17 Sony Corp 光学ピックアップ装置、光ディスク装置およびトラッキング制御方法
JP3799318B2 (ja) * 2002-10-22 2006-07-19 株式会社日立製作所 光ピックアップおよびそれを用いた光学的情報記録装置または再生装置
JP2004253111A (ja) * 2003-01-31 2004-09-09 Sharp Corp 光ピックアップ装置
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
JP4479645B2 (ja) * 2005-11-07 2010-06-09 ソニー株式会社 トラッキングエラー検出方法、トラッキングエラー検出装置及び光記録再生装置
JP2008004250A (ja) * 2006-05-24 2008-01-10 Sony Corp 光ディスク装置及び光ピックアップ
JP4106072B1 (ja) * 2006-12-18 2008-06-25 松下電器産業株式会社 光ピックアップ装置
JP2009158042A (ja) * 2007-12-27 2009-07-16 Panasonic Corp 光ピックアップ装置及び光検出器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL160138C (nl) * 1972-05-11 1979-09-17 Philips Nv Inrichting voor het uitlezen van een vlakke registratie- drager.
US4037252A (en) * 1973-11-10 1977-07-19 U.S. Philips Corporation Apparatus for reading a disc-shaped record carrier with plural scanning spots for stable radial tracking
US4065786A (en) * 1975-09-30 1977-12-27 Rca Corporation Videodisc playback system
JPS52145006A (en) * 1976-05-27 1977-12-02 Mitsubishi Electric Corp Highly densed recording signals reproduction device
JPS6048809B2 (ja) * 1979-10-16 1985-10-29 パイオニアビデオ株式会社 情報読取装置におけるトラッキングサ−ボ引込装置
JPS58185045A (ja) * 1982-04-24 1983-10-28 Sony Corp デイスク再生装置
JPS58185044A (ja) * 1982-04-24 1983-10-28 Sony Corp デイスク再生装置
JPS58208939A (ja) * 1982-05-28 1983-12-05 Akai Electric Co Ltd 光ピツクアツプのトラツキングエラ−信号検出方法
JPS5914148A (ja) * 1982-07-13 1984-01-25 Fujitsu Ltd 光学的情報再生装置
JPS5958638A (ja) * 1982-09-28 1984-04-04 Nec Corp 光学的記録再生用光ヘツド
JPS59172171A (ja) * 1983-03-19 1984-09-28 Sony Corp 光ピツクアツプ

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63160021A (ja) * 1986-12-23 1988-07-02 Nippon Columbia Co Ltd 光デイスク装置
JPH02149935A (ja) * 1988-11-30 1990-06-08 Nec Home Electron Ltd トラッキングエラー検出方法
US5140577A (en) * 1989-04-24 1992-08-18 Sony Corporation Tracking error signal generating circuit for a multichannel type optical disc player
WO1990013116A1 (en) * 1989-04-24 1990-11-01 Sony Corporation Optical recording/reproducing apparatus
US5159589A (en) * 1989-06-01 1992-10-27 Sony Corporation Optical recording and/or reproducing apparatus
WO1990015408A1 (en) * 1989-06-01 1990-12-13 Sony Corporation Optical recording and/or reproducing apparatus
JPH0411332A (ja) * 1990-04-27 1992-01-16 Nec Corp 光ディスク装置
US5303216A (en) * 1991-08-28 1994-04-12 Mitsubishi Denki Kabushiki Kaisha Optical recording and reproducing apparatus for tracking wobbling guide grooves
US5383169A (en) * 1991-08-28 1995-01-17 Mitsubishi Denki Kabushiki Kaisha Optical recording and reproducing apparatus for tracking wobbling guide grooves
US5864525A (en) * 1992-08-20 1999-01-26 Mitsubishi Denki Kabushiki Kaisha Optical disk device
US5453962A (en) * 1992-08-20 1995-09-26 Mitsubishi Denki Kabushiki Kaisha Focus error detecting device
US5532987A (en) * 1992-08-20 1996-07-02 Mitsubishi Denki Kabushiki Kaisha Focus error detecting device
US5687032A (en) * 1992-08-20 1997-11-11 Mitsubishi Denki Kabushiki Kaisha Optical device inclination angle adjuster
US5986984A (en) * 1995-02-20 1999-11-16 Mitsubishi Denki Kabushiki Kaisha Optical information processing device having switchable optics for use with plural media types
US5777960A (en) * 1995-05-09 1998-07-07 Ricoh Company, Ltd. Optical head device including fixed and movable deflection means
US7379399B2 (en) 1995-06-26 2008-05-27 Pioneer Corporation Optical disc, and reading system and manufacturing method of the disc
US7164632B2 (en) 2001-10-04 2007-01-16 Sharp Kabushiki Kaisha Optical pickup tracking error detecting method and optical pickup device
US7215609B2 (en) 2002-06-03 2007-05-08 Hitachi, Ltd. Optical reproducing apparatus
US7260033B2 (en) 2002-06-03 2007-08-21 Hitachi, Ltd. Optical reproducing apparatus
US7242648B2 (en) 2003-04-28 2007-07-10 Matsushita Electric Industrial Co., Ltd. Tracking error signal generation device, optical disc apparatus, tracking error signal generation method and tracking control method
US7990834B2 (en) 2005-07-28 2011-08-02 Sharp Kabushiki Kaisha Optical pickup device recording and/or reproducing information on and/or from a plurality of kinds of recording media
US7978586B2 (en) 2006-12-18 2011-07-12 Panasonic Corporation Optical pickup device
US7940631B2 (en) 2007-02-01 2011-05-10 Panasonic Corporation Optical pickup device
WO2008146511A1 (ja) 2007-05-30 2008-12-04 Mitsubishi Electric Corporation 光ヘッド装置及び光ディスク装置
US7995433B2 (en) 2007-05-30 2011-08-09 Mitsubishi Electric Corporation Optical head apparatus and optical disc apparatus
US7978590B2 (en) 2008-02-08 2011-07-12 Sharp Kabushiki Kaisha Optical pickup apparatus, reproducing apparatus, recording apparatus, and tracking error signal generation method
US8169863B2 (en) 2009-04-23 2012-05-01 Panasonic Corporation Tracking control device, tracking control method, and optical disc device
US8085631B2 (en) 2009-06-05 2011-12-27 Panasonic Corporation Tracking control device, tracking control method, and optical disc apparatus

Also Published As

Publication number Publication date
CN85107597A (zh) 1986-06-10
DE3581078D1 (de) 1991-02-07
US4775968A (en) 1988-10-04
KR880700395A (ko) 1988-03-15
EP0201603A1 (en) 1986-11-20
WO1986002479A1 (en) 1986-04-24
EP0201603B1 (en) 1991-01-02
CN1005368B (zh) 1989-10-04
EP0201603A4 (en) 1988-01-28
AU4962985A (en) 1986-05-02
ATE59725T1 (de) 1991-01-15
KR930005784B1 (ko) 1993-06-24
JPH0434212B2 (en, 2012) 1992-06-05
AU581265B2 (en) 1989-02-16

Similar Documents

Publication Publication Date Title
JPS6194246A (ja) 光学式ヘッドのトラッキング誤差検出方法
US6567355B2 (en) Optical detector, optical pickup and optical information reproducing apparatus using optical pickup
JP4175092B2 (ja) 光ヘッド装置および光学式情報記録再生装置
KR100555478B1 (ko) 안정된 오차신호 검출 가능한 광픽업장치
JP2907842B2 (ja) 光学的走査装置
US5570334A (en) Optical pickup with a double refraction polarizing plate to split light beams into two polarized beams
JP2647829B2 (ja) 光ヘッド装置
JP2003317280A (ja) 光ピックアップ装置
JPH05234107A (ja) 光学ピックアップ装置及びトラッキング誤差信号検出方法
JPH04129040A (ja) 光ヘッド及びそれを用いた情報記録再生装置
JPH0612725A (ja) 光ピックアップ
US6434092B1 (en) Optical head for land and groove recording
JPS62172538A (ja) 光ヘツド装置
JP2595937B2 (ja) 光ヘツド装置
JPS63157340A (ja) 光磁気記録再生装置
JP2978269B2 (ja) 光ディスク装置
JPH083908B2 (ja) フォトディテクタの位置合わせ方法および光ピックアップヘッド装置
JP2006012213A (ja) 受発光集積デバイスおよびそれを備える光ピックアップならびに光ディスク装置
JPH0449535A (ja) 光学式読取り装置
JPS62217425A (ja) 光ヘツド装置
JP2669103B2 (ja) 光学式情報記録再生装置の信号検出系
JP2008004172A (ja) 光ピックアップ装置
JPH06295481A (ja) 光ピックアップ
JPH10334484A (ja) 光ヘッドのトラッキング誤差信号補正装置
JPH0210489B2 (en, 2012)

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term