DE69121020T2 - Optischer Informationsspeicher aus überlagerten Schichten - Google Patents

Optischer Informationsspeicher aus überlagerten Schichten

Info

Publication number
DE69121020T2
DE69121020T2 DE1991621020 DE69121020T DE69121020T2 DE 69121020 T2 DE69121020 T2 DE 69121020T2 DE 1991621020 DE1991621020 DE 1991621020 DE 69121020 T DE69121020 T DE 69121020T DE 69121020 T2 DE69121020 T2 DE 69121020T2
Authority
DE
Germany
Prior art keywords
information storage
optical information
superimposed layers
superimposed
layers
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
DE1991621020
Other languages
English (en)
Other versions
DE69121020D1 (de
Inventor
Claude Puech
Jean-Pierre Huignard
Michel Papuchon
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.)
Callahan Cellular LLC
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of DE69121020D1 publication Critical patent/DE69121020D1/de
Publication of DE69121020T2 publication Critical patent/DE69121020T2/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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
    • G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
    • 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
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • 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
    • 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
    • G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
DE1991621020 1990-06-12 1991-06-04 Optischer Informationsspeicher aus überlagerten Schichten Expired - Fee Related DE69121020T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9007284A FR2663146A1 (fr) 1990-06-12 1990-06-12 Stockage optique d'informations en strates superposees.

Publications (2)

Publication Number Publication Date
DE69121020D1 DE69121020D1 (de) 1996-08-29
DE69121020T2 true DE69121020T2 (de) 1996-12-19

Family

ID=9397508

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1991621020 Expired - Fee Related DE69121020T2 (de) 1990-06-12 1991-06-04 Optischer Informationsspeicher aus überlagerten Schichten

Country Status (4)

Country Link
EP (1) EP0461956B1 (de)
JP (1) JPH04229417A (de)
DE (1) DE69121020T2 (de)
FR (1) FR2663146A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373499A (en) * 1993-07-22 1994-12-13 International Business Machines Corporation Multilayer optical disk and system having multiple optical paths include identical total disk substrate thickness
FR2710443B1 (fr) * 1993-09-22 1995-11-10 Digipress Sa Procédé d'enregistrement d'informations sur un disque optique et de lecture de celles-ci, support d'enregistrement et agencement de lecture pour la mise en Óoeuvre du procédé.
US5995481A (en) * 1995-09-12 1999-11-30 Wea Manufacturing Inc. Light-readable recording disc utilizing half-wavelength pits or bumps and system for reading such discs
FR2742911B1 (fr) * 1995-12-21 1998-02-06 Thomson Csf Support d'enregistrement/lecture optique d'informations et procede d'enregistrement
US7006425B1 (en) 1998-11-30 2006-02-28 Kabushiki Kaisha Toshiba Information recording and/or reproducing method and apparatus for three dimensional optical recording medium
EP1700297A2 (de) * 2003-08-06 2006-09-13 Mempile Inc. Verfahren und vorrichtungen zum formatieren und verfolgen von informationen in einem dreidimensionalen speichermedium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876990A (en) * 1972-08-09 1975-04-08 Daniel Silverman Methods of storing information using arrays of multiple spot patterns
US4845529A (en) * 1987-12-18 1989-07-04 Thomas W. Secrest Storage apparatus comprising a plurality of layers
NL7803069A (nl) * 1978-03-22 1979-09-25 Philips Nv Meerlaags informatieschijf.
GB8629223D0 (en) * 1986-12-06 1987-01-14 Emi Plc Thorn Replication of carriers
JPS63220434A (ja) * 1987-03-09 1988-09-13 Matsushita Electric Ind Co Ltd 光デイスクおよびその記録再生方法
JPH0354740A (ja) * 1989-07-24 1991-03-08 Matsushita Electric Ind Co Ltd 光学情報記録部材および光学情報記録再生装置

Also Published As

Publication number Publication date
FR2663146B1 (de) 1995-04-21
JPH04229417A (ja) 1992-08-18
EP0461956B1 (de) 1996-07-24
FR2663146A1 (fr) 1991-12-13
DE69121020D1 (de) 1996-08-29
EP0461956A1 (de) 1991-12-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: THALES, NEUILLY SUR SEINE, FR

8327 Change in the person/name/address of the patent owner

Owner name: THES INVESTMENTS LLC, WILMINGTON, DEL., US

8328 Change in the person/name/address of the agent

Representative=s name: PATENTANWAELTE TERGAU & POHL, 90482 NUERNBERG

8339 Ceased/non-payment of the annual fee