DE3787033T2 - Optische Aufnahme und/oder Wiedergabe von Informationssignalen. - Google Patents

Optische Aufnahme und/oder Wiedergabe von Informationssignalen.

Info

Publication number
DE3787033T2
DE3787033T2 DE87300128T DE3787033T DE3787033T2 DE 3787033 T2 DE3787033 T2 DE 3787033T2 DE 87300128 T DE87300128 T DE 87300128T DE 3787033 T DE3787033 T DE 3787033T DE 3787033 T2 DE3787033 T2 DE 3787033T2
Authority
DE
Germany
Prior art keywords
reproduction
optical recording
information signals
signals
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
DE87300128T
Other languages
English (en)
Other versions
DE3787033D1 (de
Inventor
Osamu Tajima
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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
Priority claimed from JP61001516A external-priority patent/JPS62159352A/ja
Priority claimed from JP61001515A external-priority patent/JPS62159356A/ja
Priority claimed from JP61001514A external-priority patent/JP2645704B2/ja
Application filed by Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Application granted granted Critical
Publication of DE3787033D1 publication Critical patent/DE3787033D1/de
Publication of DE3787033T2 publication Critical patent/DE3787033T2/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
    • G11B7/2407—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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1395—Beam splitters or combiners

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
DE87300128T 1986-01-08 1987-01-08 Optische Aufnahme und/oder Wiedergabe von Informationssignalen. Expired - Fee Related DE3787033T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP61001516A JPS62159352A (ja) 1986-01-08 1986-01-08 光学的情報信号記録装置
JP61001515A JPS62159356A (ja) 1986-01-08 1986-01-08 光学的情報信号再生装置
JP61001514A JP2645704B2 (ja) 1986-01-08 1986-01-08 情報信号記録媒体の製作方法

Publications (2)

Publication Number Publication Date
DE3787033D1 DE3787033D1 (de) 1993-09-23
DE3787033T2 true DE3787033T2 (de) 1993-12-09

Family

ID=27274952

Family Applications (1)

Application Number Title Priority Date Filing Date
DE87300128T Expired - Fee Related DE3787033T2 (de) 1986-01-08 1987-01-08 Optische Aufnahme und/oder Wiedergabe von Informationssignalen.

Country Status (3)

Country Link
US (1) US5045868A (de)
EP (1) EP0229035B1 (de)
DE (1) DE3787033T2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2603973B2 (ja) * 1987-10-16 1997-04-23 株式会社東芝 光学ヘッド
US5202789A (en) * 1987-10-16 1993-04-13 Kabushiki Kaisha Toshiba Optical system for preserving a state of polarization of light beam
US5040165A (en) * 1988-03-03 1991-08-13 Hitachi Maxell, Ltd. Optical information recording medium and method of fabricating the same
EP0346844B1 (de) * 1988-06-14 1995-09-20 Nec Corporation Optische Kopfanordnung
CA1316597C (en) * 1988-07-20 1993-04-20 Takeshi Yamaguchi Magneto-optical memory apparatus and optical memory apparatus
EP0414440B1 (de) * 1989-08-19 1996-01-31 Fujitsu Limited Magnetooptischer Kopf
JPH03157843A (ja) * 1989-11-16 1991-07-05 Sony Corp 光学ピックアップ装置
EP0439876A1 (de) * 1990-01-29 1991-08-07 Hitachi Maxell Ltd. Optischer Kopf mit doppeltem Strahlteiler
JPH04104216A (ja) * 1990-08-24 1992-04-06 Hitachi Koki Co Ltd 光走査装置
JP3063805B2 (ja) * 1991-02-25 2000-07-12 オリンパス光学工業株式会社 光学式情報再生装置および記録媒体
JPH04301245A (ja) * 1991-03-28 1992-10-23 Canon Inc 光磁気記録再生用光ヘッド
DE4127840A1 (de) * 1991-08-22 1993-02-25 Thomson Brandt Gmbh Optische abtastvorrichtung
JP3048464B2 (ja) * 1992-04-13 2000-06-05 パイオニア株式会社 光学式情報記録媒体およびその再生装置
US5289251A (en) * 1993-05-19 1994-02-22 Xerox Corporation Trail edge buckling sheet buffering system
AU3190297A (en) * 1996-06-21 1998-01-07 Kabushiki Kaisha Toshiba Optical disk and method of manufacturing the same
JP3482154B2 (ja) * 1999-05-18 2003-12-22 シャープ株式会社 光ピックアップ装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841733A (en) * 1973-12-05 1974-10-15 Itek Corp Optical waveguide system for producing a line of modulated radiation data
US4118734A (en) * 1974-02-14 1978-10-03 U.S. Philips Corporation Optical videodisc with variable width tracks
NL173104C (nl) * 1977-02-09 1983-12-01 Victor Company Of Japan Informatiesignaalregistratiemedium van roterende soort en inrichting voor het registreren van informatiesignalen daarop.
US4449215A (en) * 1982-03-24 1984-05-15 Rca Corporation Apparatus for varying track spacing in multi-track optical record systems

Also Published As

Publication number Publication date
EP0229035A3 (en) 1988-10-19
US5045868A (en) 1991-09-03
EP0229035B1 (de) 1993-08-18
DE3787033D1 (de) 1993-09-23
EP0229035A2 (de) 1987-07-15

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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