FR2720183B1 - Optical reading disc with authentication. - Google Patents

Optical reading disc with authentication.

Info

Publication number
FR2720183B1
FR2720183B1 FR9406081A FR9406081A FR2720183B1 FR 2720183 B1 FR2720183 B1 FR 2720183B1 FR 9406081 A FR9406081 A FR 9406081A FR 9406081 A FR9406081 A FR 9406081A FR 2720183 B1 FR2720183 B1 FR 2720183B1
Authority
FR
France
Prior art keywords
authentication
optical reading
reading disc
disc
optical
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
FR9406081A
Other languages
French (fr)
Other versions
FR2720183A1 (en
Inventor
Jean-Yves Beugin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR9406081A priority Critical patent/FR2720183B1/en
Publication of FR2720183A1 publication Critical patent/FR2720183A1/en
Application granted granted Critical
Publication of FR2720183B1 publication Critical patent/FR2720183B1/en
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
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/281—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs by changing the physical properties of the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
    • G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph
    • 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
    • G11B7/24—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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • 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
    • G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
    • 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
    • G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Security & Cryptography (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
FR9406081A 1994-05-18 1994-05-18 Optical reading disc with authentication. Expired - Fee Related FR2720183B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9406081A FR2720183B1 (en) 1994-05-18 1994-05-18 Optical reading disc with authentication.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9406081A FR2720183B1 (en) 1994-05-18 1994-05-18 Optical reading disc with authentication.

Publications (2)

Publication Number Publication Date
FR2720183A1 FR2720183A1 (en) 1995-11-24
FR2720183B1 true FR2720183B1 (en) 1996-07-19

Family

ID=9463319

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9406081A Expired - Fee Related FR2720183B1 (en) 1994-05-18 1994-05-18 Optical reading disc with authentication.

Country Status (1)

Country Link
FR (1) FR2720183B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60304232T2 (en) * 2002-01-11 2006-12-28 Fuji Photo Film Co., Ltd., Minami-Ashigara Optical information recording medium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329122B1 (en) * 1988-02-19 1993-08-11 Philips and Du Pont Optical Company Method for affixing information on read-only optical disks
WO1989009989A1 (en) * 1988-04-12 1989-10-19 Dia Nippon Insatsu Kabushiki Kaisha Optical recording medium and method of manufacturing same
JPH0340247A (en) * 1989-07-06 1991-02-21 Matsushita Electric Ind Co Ltd Optical recording carrier and production thereof
JP3109866B2 (en) * 1990-11-17 2000-11-20 太陽誘電株式会社 Substrate for optical information recording carrier and method of manufacturing the same
JPH056571A (en) * 1991-06-28 1993-01-14 Pioneer Electron Corp Optical type information storage medium

Also Published As

Publication number Publication date
FR2720183A1 (en) 1995-11-24

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20100129