DE3620331C2 - - Google Patents

Info

Publication number
DE3620331C2
DE3620331C2 DE3620331A DE3620331A DE3620331C2 DE 3620331 C2 DE3620331 C2 DE 3620331C2 DE 3620331 A DE3620331 A DE 3620331A DE 3620331 A DE3620331 A DE 3620331A DE 3620331 C2 DE3620331 C2 DE 3620331C2
Authority
DE
Germany
Prior art keywords
areas
area
light
recording
information
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
DE3620331A
Other languages
German (de)
English (en)
Other versions
DE3620331A1 (de
Inventor
Nobuhide Hachioji Tokio/Tokyo Jp Matsubayashi
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
Publication of DE3620331A1 publication Critical patent/DE3620331A1/de
Application granted granted Critical
Publication of DE3620331C2 publication Critical patent/DE3620331C2/de
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
    • G11B7/0903—Multi-beam tracking systems
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • G11B11/10578—Servo format, e.g. prepits, guide tracks, pilot signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • 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
    • G11B7/0908—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 focusing only
    • G11B7/0909—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 focusing only by astigmatic methods
    • 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
    • G11B7/0908—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 focusing only
    • G11B7/0916—Foucault or knife-edge methods

Landscapes

  • Optical Recording Or Reproduction (AREA)
DE19863620331 1985-06-21 1986-06-18 Optische aufzeichnungs-/wiedergabeeinrichtung Granted DE3620331A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60135606A JPH0746429B2 (ja) 1985-06-21 1985-06-21 光学式記録再生装置

Publications (2)

Publication Number Publication Date
DE3620331A1 DE3620331A1 (de) 1987-01-22
DE3620331C2 true DE3620331C2 (en, 2012) 1989-10-12

Family

ID=15155743

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863620331 Granted DE3620331A1 (de) 1985-06-21 1986-06-18 Optische aufzeichnungs-/wiedergabeeinrichtung

Country Status (3)

Country Link
US (1) US5132953A (en, 2012)
JP (1) JPH0746429B2 (en, 2012)
DE (1) DE3620331A1 (en, 2012)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2569005B2 (ja) * 1986-03-31 1997-01-08 株式会社日立製作所 光ディスク装置および光ディスク
NL8701632A (nl) * 1987-07-10 1989-02-01 Philips Nv Systeem voor het optekenen en/of uitlezen van een informatiesignaal, een registratiedrager, een opteken en/of uitleesinrichting voor toepassing in een dergelijk systeem, en een inrichting en werkwijze voor het vervaardigen van een dergelijke registratiedrager.
EP0304312B1 (en) * 1987-08-21 1992-10-21 Sharp Kabushiki Kaisha An optical disk for use in optical memory devices
DE3876544T3 (de) * 1987-09-02 1999-04-29 Sharp K.K., Osaka Optisches Speichersystem.
US5185732A (en) * 1988-06-20 1993-02-09 Sony Corporation Recording medium and recording and reproducing apparatus employing the recording medium
JP2695302B2 (ja) * 1991-05-16 1997-12-24 シャープ株式会社 光ピックアップ駆動装置
JP3350072B2 (ja) * 1991-11-12 2002-11-25 パイオニア株式会社 ピックアップ装置
US5331626A (en) * 1992-01-20 1994-07-19 Pioneer Electronic Corporation Recording medium and information recording and reproducing apparatus therefor
US5434678A (en) * 1993-01-11 1995-07-18 Abecassis; Max Seamless transmission of non-sequential video segments
JPH0689473A (ja) * 1992-09-10 1994-03-29 Matsushita Electric Ind Co Ltd 光磁気記録媒体
JP2546477B2 (ja) * 1992-12-21 1996-10-23 日本電気株式会社 光磁気記録媒体とその記録再生方法及び記録再生装置
US5406534A (en) * 1993-02-03 1995-04-11 Matsushita Electric Industrial Co., Ltd. Double-sided recordable optical disk suitable for a substituting process and a method for performing defect management
US5537383A (en) * 1995-03-01 1996-07-16 Eastman Kodak Company Optical data storage system with differential data detection and source noise subtraction for use with magneto-optic, write-once and other optical media
US5586101A (en) * 1995-03-01 1996-12-17 Eastman Kodak Company Magneto-optic data storage system with differential detection channels having separate gain control circuit
JP3817286B2 (ja) * 1995-11-22 2006-09-06 パイオニア株式会社 ピックアップ制御装置および情報媒体記録装置
US6181666B1 (en) * 1996-10-21 2001-01-30 Olympus Optical Company, Ltd. Optical pickup
JPH10275364A (ja) * 1997-03-28 1998-10-13 Toshiba Corp 情報記憶媒体および情報再生装置
US7239602B2 (en) * 1998-08-27 2007-07-03 Ricoh Company, Ltd. Optical information recording medium with a partition wall between an information tracks groove and a preformat pit encoding information therefor
US6411573B1 (en) 1998-02-20 2002-06-25 Zen Research (Ireland), Ltd. Multi-beam optical pickup
JP3688894B2 (ja) * 1998-07-07 2005-08-31 パイオニア株式会社 光ピックアップ
US6229771B1 (en) * 1998-10-09 2001-05-08 Zen Research (Ireland), Ltd. Method and apparatus for generating focus error signals in a multi-beam optical disk drive
US6889383B1 (en) 2000-10-23 2005-05-03 Clearplay, Inc. Delivery of navigation data for playback of audio and video content
US7975021B2 (en) 2000-10-23 2011-07-05 Clearplay, Inc. Method and user interface for downloading audio and video content filters to a media player
US6898799B1 (en) 2000-10-23 2005-05-24 Clearplay, Inc. Multimedia content navigation and playback
JP4273705B2 (ja) * 2002-05-13 2009-06-03 日本電気株式会社 光ディスク媒体
EP1665792A4 (en) * 2003-08-26 2007-11-28 Clearplay Inc METHOD AND DEVICE FOR CONTROLLING THE PLAYING OF AN AUDIOSIGNAL
JP2005122774A (ja) * 2003-10-14 2005-05-12 Nec Corp 記録型光ディスク装置および光ディスク媒体
AU2004304818A1 (en) * 2003-10-22 2005-07-07 Clearplay, Inc. Apparatus and method for blocking audio/visual programming and for muting audio
US8117282B2 (en) * 2004-10-20 2012-02-14 Clearplay, Inc. Media player configured to receive playback filters from alternative storage mediums
AU2006236335A1 (en) * 2005-04-18 2006-10-26 Clearplay, Inc. Apparatus, system and method for associating one or more filter files with a particular multimedia presentation

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7301932A (en, 2012) * 1973-02-12 1974-08-14
JPS51107121A (ja) * 1975-03-17 1976-09-22 Yoshifumi Sakurai Hikarijikikirokuhoshiki
FR2321164A1 (fr) * 1975-08-13 1977-03-11 Thomson Csf Procede mecano-optique de diffusion de l'information, disque et dispositifs d'enregistrement et de lecture pour la mise en oeuvre de ce procede
JPS5534340A (en) * 1978-08-31 1980-03-10 Nippon Hoso Kyokai <Nhk> Recording reproducing system by light beam
NL7811003A (nl) * 1978-11-06 1980-05-08 Philips Nv Schijfvormige, optisch uitleesbare registratiedrager, als opslagmedium voor data-informatie.
CA1165871A (en) * 1978-11-08 1984-04-17 Kornelis Bulthuis Optically inscribable record carrier
NL7906576A (nl) * 1979-09-03 1981-03-05 Philips Nv Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare informatiestruktuur, alsmede uitleesinrichting daarvoor.
JPS56145535A (en) * 1980-04-15 1981-11-12 Matsushita Electric Ind Co Ltd Disc for optical recording
JPS57130240A (en) * 1981-02-05 1982-08-12 Olympus Optical Co Ltd Optical information recording and reproducing device and information recording medium for it
JPS57147148A (en) * 1981-03-05 1982-09-10 Olympus Optical Co Ltd Information reproducer with magnetooptic system
JPS5841446A (ja) * 1981-09-04 1983-03-10 Hitachi Ltd 光学的情報追跡方式
JPS58102347A (ja) * 1981-12-11 1983-06-17 Mitsubishi Electric Corp 光デイスク記録担体
JPS58102338A (ja) * 1981-12-11 1983-06-17 Mitsubishi Electric Corp 光デイスク記録・再生装置
EP0100995A3 (en) * 1982-08-10 1985-10-16 Kabushiki Kaisha Toshiba Optical disk
JPH0680535B2 (ja) * 1982-08-27 1994-10-12 株式会社日立製作所 情報の記録再生方法
JPS59177744A (ja) * 1983-03-28 1984-10-08 Matsushita Electric Ind Co Ltd 記録再生用デイスク担体
US4689781A (en) * 1984-02-29 1987-08-25 Kabushiki Kaisha Toshiba Optical system for tracing information recording medium with multiple beams
JPS60239949A (ja) * 1984-05-14 1985-11-28 Ricoh Co Ltd 光デイスク
JPS6185653A (ja) * 1984-10-02 1986-05-01 Sharp Corp 光磁気メモリ素子

Also Published As

Publication number Publication date
US5132953A (en) 1992-07-21
JPH0746429B2 (ja) 1995-05-17
DE3620331A1 (de) 1987-01-22
JPS61296535A (ja) 1986-12-27

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee