DE3882735D1 - Optische informationsplatte. - Google Patents

Optische informationsplatte.

Info

Publication number
DE3882735D1
DE3882735D1 DE8888100697T DE3882735T DE3882735D1 DE 3882735 D1 DE3882735 D1 DE 3882735D1 DE 8888100697 T DE8888100697 T DE 8888100697T DE 3882735 T DE3882735 T DE 3882735T DE 3882735 D1 DE3882735 D1 DE 3882735D1
Authority
DE
Germany
Prior art keywords
optical information
information plate
plate
optical
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 - Fee Related
Application number
DE8888100697T
Other languages
English (en)
Other versions
DE3882735T2 (de
Inventor
Nobuhiro Tokushuku
Hitoshi Yanagihara
Katashi Hazama
Masaki Yoshii
Naotake Ebinuma
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3882735D1 publication Critical patent/DE3882735D1/de
Application granted granted Critical
Publication of DE3882735T2 publication Critical patent/DE3882735T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Optical Recording Or Reproduction (AREA)
DE88100697T 1987-02-27 1988-01-19 Optische Informationsplatte. Expired - Fee Related DE3882735T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62042522A JPH0731813B2 (ja) 1987-02-27 1987-02-27 光デイスク

Publications (2)

Publication Number Publication Date
DE3882735D1 true DE3882735D1 (de) 1993-09-09
DE3882735T2 DE3882735T2 (de) 1993-12-02

Family

ID=12638415

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88100697T Expired - Fee Related DE3882735T2 (de) 1987-02-27 1988-01-19 Optische Informationsplatte.

Country Status (4)

Country Link
US (1) US4991163A (de)
EP (1) EP0280028B1 (de)
JP (1) JPH0731813B2 (de)
DE (1) DE3882735T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63273232A (ja) * 1987-05-01 1988-11-10 Seiko Epson Corp 光記録ディスク
JPH0340250A (ja) * 1989-07-06 1991-02-21 Matsushita Electric Ind Co Ltd 光磁気ディスクおよび光磁気ディスク装置
ATE144855T1 (de) * 1990-02-22 1996-11-15 Sony Corp Optischer informationsaufzeichnungsträger
JP2638248B2 (ja) * 1990-03-15 1997-08-06 松下電器産業株式会社 光学的情報媒体および再生装置および記録装置および再生方法および記録方法
JPH04149834A (ja) * 1990-10-12 1992-05-22 Pioneer Electron Corp 相変化型光学式情報記録媒体
JP3301621B2 (ja) * 1991-05-30 2002-07-15 ティーディーケイ株式会社 光記録ディスクの製造方法
JP3240762B2 (ja) * 1993-07-26 2001-12-25 ソニー株式会社 光記録媒体の再生方法及び再生装置
US5654948A (en) * 1993-09-07 1997-08-05 Sony Corporation Disc apparatus for recording/reproducing with zone constant angular velocity
CN1106640C (zh) 1994-08-25 2003-04-23 索尼公司 光盘和光盘驱动装置
EP2009634A1 (de) 2000-12-14 2008-12-31 ECD Systems, Inc. Systeme und Verfahren zur Modifikation optischer Medien
US7562396B2 (en) * 2001-08-21 2009-07-14 Ecd Systems, Inc. Systems and methods for media authentication
US7643393B2 (en) * 2001-12-12 2010-01-05 Ecd Systems, Inc. Systems and methods for optical media modification
US7716485B2 (en) 2002-02-01 2010-05-11 Sca Ipla Holdings Inc. Systems and methods for media authentication

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7904113A (nl) * 1979-05-25 1980-11-27 Philips Nv Optisch uitleesbare informatieschijf, werkwijze voor de vervaardiging ervan alsmede een inrichting voor het uitvoeren van deze werkwijze.
JPS5841446A (ja) * 1981-09-04 1983-03-10 Hitachi Ltd 光学的情報追跡方式
EP0100995A3 (en) * 1982-08-10 1985-10-16 Kabushiki Kaisha Toshiba Optical disk
JPH0664758B2 (ja) * 1984-05-28 1994-08-22 株式会社日立製作所 光ビデオデイスク用ガラス原盤
JPH0630167B2 (ja) * 1984-09-19 1994-04-20 松下電器産業株式会社 光ディスクレプリカ
JPS61156031A (ja) * 1984-12-27 1986-07-15 Nippon Denso Co Ltd 車両用防眩型反射鏡
US4748609A (en) * 1985-03-29 1988-05-31 Hitachi, Ltd. Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset
US4779253A (en) * 1985-07-30 1988-10-18 Laser Magnetic Storage International Company Sampled servo for an optical disk drive
JPS6313784A (ja) * 1986-07-04 1988-01-21 Hitachi Ltd 追記形光学的情報記録部材
JP2559372B2 (ja) * 1986-07-09 1996-12-04 株式会社日立製作所 光ディスク装置及び光情報記録方法

Also Published As

Publication number Publication date
US4991163A (en) 1991-02-05
JPH0731813B2 (ja) 1995-04-10
EP0280028A2 (de) 1988-08-31
JPS63211137A (ja) 1988-09-02
EP0280028A3 (en) 1990-09-05
EP0280028B1 (de) 1993-08-04
DE3882735T2 (de) 1993-12-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee