JPH0327972B2 - - Google Patents

Info

Publication number
JPH0327972B2
JPH0327972B2 JP56172966A JP17296681A JPH0327972B2 JP H0327972 B2 JPH0327972 B2 JP H0327972B2 JP 56172966 A JP56172966 A JP 56172966A JP 17296681 A JP17296681 A JP 17296681A JP H0327972 B2 JPH0327972 B2 JP H0327972B2
Authority
JP
Japan
Prior art keywords
light
signal
pit
tracking error
recording medium
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
Application number
JP56172966A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5877036A (ja
Inventor
Tooru Musha
Kenichi Ito
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP56172966A priority Critical patent/JPS5877036A/ja
Priority to US06/426,895 priority patent/US4544838A/en
Publication of JPS5877036A publication Critical patent/JPS5877036A/ja
Publication of JPH0327972B2 publication Critical patent/JPH0327972B2/ja
Granted legal-status Critical Current

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

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP56172966A 1981-10-30 1981-10-30 ピット中心検出方法 Granted JPS5877036A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56172966A JPS5877036A (ja) 1981-10-30 1981-10-30 ピット中心検出方法
US06/426,895 US4544838A (en) 1981-10-30 1982-09-29 Method and apparatus for detecting tracking error

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56172966A JPS5877036A (ja) 1981-10-30 1981-10-30 ピット中心検出方法

Publications (2)

Publication Number Publication Date
JPS5877036A JPS5877036A (ja) 1983-05-10
JPH0327972B2 true JPH0327972B2 (en]) 1991-04-17

Family

ID=15951655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56172966A Granted JPS5877036A (ja) 1981-10-30 1981-10-30 ピット中心検出方法

Country Status (2)

Country Link
US (1) US4544838A (en])
JP (1) JPS5877036A (en])

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342525A1 (de) * 1982-11-27 1984-05-30 Canon K.K., Tokio/Tokyo Geraet zur informations-aufzeichnung und/oder -wiedergabe
JPS59163943U (ja) * 1983-04-18 1984-11-02 パイオニア株式会社 光軸モニタ装置
NL8303563A (nl) * 1983-10-17 1985-05-17 Philips Nv Inrichting voor het weergeven van digitale informatie via een overdrachtsmedium.
JPH0690804B2 (ja) * 1984-01-20 1994-11-14 株式会社日立製作所 光学的情報記録再生装置
US4669073A (en) * 1984-01-31 1987-05-26 Matsushita Electric Industrial Co., Ltd. Optical disk drive apparatus
NL8400674A (nl) * 1984-03-02 1985-10-01 Philips Nv Inrichting voor het inschrijven en/of uitlezen van informatie in een spoor van een reflekterende registratiedrager, met een fokusregeling met verminderde spot offsetgevoeligheid.
JPS6196528A (ja) * 1984-10-17 1986-05-15 Sony Corp 光学式ピックアップ装置
US4785440A (en) * 1985-05-24 1988-11-15 Canon Kabushiki Kaisha Method and apparatus for driving an optical pickup of an optical information recording and reproducing apparatus
DE3618720A1 (de) * 1985-06-05 1986-12-11 Hitachi, Ltd., Tokio/Tokyo Verfahren und vorrichtung zur spurnachfuehrung bei bildplatten
DE3687495T2 (de) * 1985-07-30 1993-07-29 Philips Nv Generatorkreis fuer spursignal und aufzeichnungstraeger dafuer.
US4879708A (en) * 1985-07-30 1989-11-07 Laser Magnetic Storage International Company Optical disk tracking and seeking systems specific track formats using wobbled pits
US4879707A (en) * 1985-07-30 1989-11-07 Laser Magnetic Storage International Company Optical disk tracking and seeking systems specific track formats using discontinuities
US4959823A (en) * 1985-07-30 1990-09-25 Laser Magnetic Storage International Company Tracking and seeking system for use with an optical record carrier having a wobbled track format
DE3687274T2 (de) * 1985-09-27 1993-04-15 Sharp Kk Spurnachlaufverfahren fuer optische speicherplatte.
JPS62109236A (ja) * 1985-11-07 1987-05-20 Teac Co トラツキングサ−ボ装置
JPS62165736A (ja) * 1986-01-16 1987-07-22 Matsushita Electric Ind Co Ltd 光デイスク再生装置
JPS62270033A (ja) * 1986-05-19 1987-11-24 Yamaha Corp 光ピツクアツプ制御装置
JP2796285B2 (ja) * 1986-07-11 1998-09-10 株式会社日立製作所 トラッキング方法及びそれを用いた光ディスク装置
US4864552A (en) * 1986-08-29 1989-09-05 Laser Magnetic Storage International Company Driving signal for coarse servo employing sampled offset signal
JPS63131332A (ja) * 1986-11-21 1988-06-03 Ricoh Co Ltd 光ピツクアツプのトラツキング制御装置
JPH0679378B2 (ja) * 1986-12-15 1994-10-05 ソニー株式会社 光学式記録再生装置のトラツキングサ−ボ回路
US4951154A (en) * 1987-01-28 1990-08-21 Nec Corporation Magneto-optic recording/reproducing apparatus
US5031166A (en) * 1988-01-25 1991-07-09 Laser Magnetic Storage International Company Optical disk tracking and seeking systems and specific track formats using discontinuities and circuitry therefor
US5065387A (en) * 1988-04-07 1991-11-12 Insite Peripherals, Inc. Method and apparatus for generating tracking error signals by means of an optical servo system
JP2701392B2 (ja) * 1988-12-14 1998-01-21 ソニー株式会社 フオーカスエラー検出回路
JP2716569B2 (ja) * 1990-04-25 1998-02-18 パイオニア株式会社 光学式情報読取り装置
US5245598A (en) * 1990-06-27 1993-09-14 Burroughs Alan C Method and apparatus for seek operations in an optical recording system including holding a focus error signal at track crossings
JPH0460927A (ja) * 1990-06-27 1992-02-26 Pioneer Electron Corp 光ピックアップ
JP2866160B2 (ja) * 1990-07-19 1999-03-08 パイオニア株式会社 光学式ディスクプレーヤ
JP3703569B2 (ja) * 1996-04-02 2005-10-05 ソニー株式会社 光記録媒体及びその記録再生方法、記録再生装置
US6014354A (en) * 1996-11-06 2000-01-11 Sharp Kabushiki Kaisha Tracking control device for optical pickup
US5956304A (en) * 1997-08-15 1999-09-21 Cirrus Logic, Inc. Differential phase error detector using dual arm correlation for servo tracking in an optical disk storage device
DE19924733A1 (de) * 1999-05-31 2000-12-07 Thomson Brandt Gmbh Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger
JP3767786B2 (ja) * 1999-11-02 2006-04-19 パイオニア株式会社 トラッキング制御回路
FR2837972B1 (fr) * 2002-04-02 2006-07-21 Thales Sa Procede d'asservissement radial pour un dispositif de reproduction d'informations d'un disque optique et dispositif de reproduction mettant en oeuvre ce procede

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381086A (en) * 1962-08-16 1968-04-30 Minnesota Mining & Mfg Reproduction of television signals from photographic disc recordings
FR2280150B1 (fr) * 1974-07-26 1977-01-07 Thomson Brandt Dispositif de detection d'ecart de mise au point d'une tete de lecture optique par rapport a une surface de lecture
US4057833A (en) * 1974-10-03 1977-11-08 U.S. Philips Corporation Centering detection system for an apparatus for playing optically readable record carriers
JPS5415484B2 (en]) * 1975-02-26 1979-06-15
JPS5690434A (en) * 1979-12-19 1981-07-22 Hitachi Ltd Optical information reproducing device

Also Published As

Publication number Publication date
JPS5877036A (ja) 1983-05-10
US4544838A (en) 1985-10-01

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