FR2894371B1 - DIGITAL SECURITY CODING SECURITY SYSTEM FOR OPTICAL DISCS. - Google Patents

DIGITAL SECURITY CODING SECURITY SYSTEM FOR OPTICAL DISCS.

Info

Publication number
FR2894371B1
FR2894371B1 FR0512371A FR0512371A FR2894371B1 FR 2894371 B1 FR2894371 B1 FR 2894371B1 FR 0512371 A FR0512371 A FR 0512371A FR 0512371 A FR0512371 A FR 0512371A FR 2894371 B1 FR2894371 B1 FR 2894371B1
Authority
FR
France
Prior art keywords
security
optical discs
digital
coding
security system
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
FR0512371A
Other languages
French (fr)
Other versions
FR2894371A1 (en
Inventor
Hafidi Idriss El
Bernard Kress
Mandiaye Ndao
Patrick Meyrueis
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.)
Universite Louis Pasteur Strasbourg I
Original Assignee
Universite Louis Pasteur Strasbourg I
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 Universite Louis Pasteur Strasbourg I filed Critical Universite Louis Pasteur Strasbourg I
Priority to FR0512371A priority Critical patent/FR2894371B1/en
Priority to PCT/FR2006/002650 priority patent/WO2007065995A1/en
Publication of FR2894371A1 publication Critical patent/FR2894371A1/en
Application granted granted Critical
Publication of FR2894371B1 publication Critical patent/FR2894371B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
    • 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
    • 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
    • G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
    • G11B20/00173—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software wherein the origin of the content is checked, e.g. determining whether the content has originally been retrieved from a legal disc copy or another trusted source
    • 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
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
    • 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
    • G11B20/00876—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry
    • 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
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Optical Recording Or Reproduction (AREA)
FR0512371A 2005-12-06 2005-12-06 DIGITAL SECURITY CODING SECURITY SYSTEM FOR OPTICAL DISCS. Expired - Fee Related FR2894371B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0512371A FR2894371B1 (en) 2005-12-06 2005-12-06 DIGITAL SECURITY CODING SECURITY SYSTEM FOR OPTICAL DISCS.
PCT/FR2006/002650 WO2007065995A1 (en) 2005-12-06 2006-12-05 System for securing by diffractively digitally encoding optical discs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0512371A FR2894371B1 (en) 2005-12-06 2005-12-06 DIGITAL SECURITY CODING SECURITY SYSTEM FOR OPTICAL DISCS.

Publications (2)

Publication Number Publication Date
FR2894371A1 FR2894371A1 (en) 2007-06-08
FR2894371B1 true FR2894371B1 (en) 2008-05-16

Family

ID=36930204

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0512371A Expired - Fee Related FR2894371B1 (en) 2005-12-06 2005-12-06 DIGITAL SECURITY CODING SECURITY SYSTEM FOR OPTICAL DISCS.

Country Status (2)

Country Link
FR (1) FR2894371B1 (en)
WO (1) WO2007065995A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9057826B2 (en) 2013-01-31 2015-06-16 Google Inc. See-through near-to-eye display with eye prescription
US9632312B1 (en) 2013-04-30 2017-04-25 Google Inc. Optical combiner with curved diffractive optical element
US9442291B1 (en) 2013-06-28 2016-09-13 Google Inc. Segmented diffractive optical elements for a head wearable display
US9459455B2 (en) 2013-12-19 2016-10-04 Google Inc. See-through eyepiece for head wearable display
US9389422B1 (en) 2013-12-23 2016-07-12 Google Inc. Eyepiece for head wearable display using partial and total internal reflections
US9395544B2 (en) 2014-03-13 2016-07-19 Google Inc. Eyepiece with switchable reflector for head wearable display
US9915823B1 (en) 2014-05-06 2018-03-13 Google Llc Lightguide optical combiner for head wearable display
US9366869B2 (en) 2014-11-10 2016-06-14 Google Inc. Thin curved eyepiece for see-through head wearable display
US10162180B2 (en) 2015-06-04 2018-12-25 Google Llc Efficient thin curved eyepiece for see-through head wearable display
US10146054B2 (en) 2015-07-06 2018-12-04 Google Llc Adding prescriptive correction to eyepieces for see-through head wearable displays
US10429646B2 (en) 2015-10-28 2019-10-01 Google Llc Free space optical combiner with prescription integration

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3469650B2 (en) * 1994-09-13 2003-11-25 ソニー株式会社 Optical recording medium and signal recording method
WO2005048256A2 (en) * 2003-11-14 2005-05-26 Koninklijke Philips Electronics N.V. A data carrier having security mark and apparatus for handling such data carrier.

Also Published As

Publication number Publication date
FR2894371A1 (en) 2007-06-08
WO2007065995A1 (en) 2007-06-14

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20100831