DE69735493D1 - Maschinenlesbare optische Platte mit Mittel zur Leseverhinderung - Google Patents

Maschinenlesbare optische Platte mit Mittel zur Leseverhinderung

Info

Publication number
DE69735493D1
DE69735493D1 DE69735493T DE69735493T DE69735493D1 DE 69735493 D1 DE69735493 D1 DE 69735493D1 DE 69735493 T DE69735493 T DE 69735493T DE 69735493 T DE69735493 T DE 69735493T DE 69735493 D1 DE69735493 D1 DE 69735493D1
Authority
DE
Germany
Prior art keywords
disc
reading
machine
barrier layer
optical disc
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 - Lifetime
Application number
DE69735493T
Other languages
English (en)
Other versions
DE69735493T2 (de
Inventor
E Rollhaus
R Powell
J Carlson
J Ehntholt
C Winkler
J Marmo
R Valentine
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.)
Flexplay Technologies Inc
Original Assignee
Flexplay Technologies Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26701179&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69735493(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Flexplay Technologies Inc filed Critical Flexplay Technologies Inc
Publication of DE69735493D1 publication Critical patent/DE69735493D1/de
Application granted granted Critical
Publication of DE69735493T2 publication Critical patent/DE69735493T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68—Record carriers
    • G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00586—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
    • G11B20/00608—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium wherein the material that the record carrier is made of is altered, e.g. adding reactive dyes that alter the optical properties of a disc after prolonged exposure to light or air
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
DE69735493T 1996-09-16 1997-09-15 Maschinenlesbare optische Platte mit Mittel zur Leseverhinderung Expired - Lifetime DE69735493T2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US2639096P 1996-09-16 1996-09-16
US26390P 1996-09-16
US902844 1997-07-30
US08/902,844 US6011772A (en) 1996-09-16 1997-07-30 Machine-readable optical disc with reading-inhibit agent
PCT/US1997/016277 WO1998011539A1 (en) 1996-09-16 1997-09-15 Machine-readable optical disc with reading-inhibit agent

Publications (2)

Publication Number Publication Date
DE69735493D1 true DE69735493D1 (de) 2006-05-11
DE69735493T2 DE69735493T2 (de) 2006-10-26

Family

ID=26701179

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69735493T Expired - Lifetime DE69735493T2 (de) 1996-09-16 1997-09-15 Maschinenlesbare optische Platte mit Mittel zur Leseverhinderung

Country Status (11)

Country Link
US (4) US6011772A (de)
EP (1) EP0925581B1 (de)
JP (1) JP4229983B2 (de)
KR (1) KR100630036B1 (de)
CN (1) CN1210691C (de)
AT (1) ATE320654T1 (de)
AU (1) AU4347697A (de)
CA (1) CA2265744C (de)
DE (1) DE69735493T2 (de)
ES (1) ES2260799T3 (de)
WO (1) WO1998011539A1 (de)

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ATE320654T1 (de) 2006-04-15
CA2265744C (en) 2001-03-06
USRE42011E1 (en) 2010-12-28
JP4229983B2 (ja) 2009-02-25
US20010046204A1 (en) 2001-11-29
KR100630036B1 (ko) 2006-09-27
EP0925581A4 (de) 2001-04-11
EP0925581B1 (de) 2006-03-15
WO1998011539A1 (en) 1998-03-19
CA2265744A1 (en) 1998-03-19
CN1210691C (zh) 2005-07-13
JP2002516014A (ja) 2002-05-28
AU4347697A (en) 1998-04-02
US6011772A (en) 2000-01-04
KR20000036132A (ko) 2000-06-26
ES2260799T3 (es) 2006-11-01
CN1246195A (zh) 2000-03-01
US6434109B2 (en) 2002-08-13
EP0925581A1 (de) 1999-06-30
DE69735493T2 (de) 2006-10-26
US6343063B1 (en) 2002-01-29

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