CA2342913A1 - Ajout de cles de filigrane selon un format flexible - Google Patents

Ajout de cles de filigrane selon un format flexible Download PDF

Info

Publication number
CA2342913A1
CA2342913A1 CA002342913A CA2342913A CA2342913A1 CA 2342913 A1 CA2342913 A1 CA 2342913A1 CA 002342913 A CA002342913 A CA 002342913A CA 2342913 A CA2342913 A CA 2342913A CA 2342913 A1 CA2342913 A1 CA 2342913A1
Authority
CA
Canada
Prior art keywords
signal
data
encoded
marks
modulation
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.)
Abandoned
Application number
CA002342913A
Other languages
English (en)
Inventor
Petrus Antonius Cornelis Maria Nuijten
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.)
Koninklijke Philips NV
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
Publication of CA2342913A1 publication Critical patent/CA2342913A1/fr
Abandoned 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
    • G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
    • 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
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • 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
    • 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
    • G11B20/00572—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
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
    • G11B2020/00065—Sigma-delta audio encoding
    • 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
    • G11B23/283—Security features, e.g. digital codes
    • G11B23/284—Security features, e.g. digital codes on the record carrier
    • 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
    • G11B7/005—Reproducing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

L'invention concerne un procédé pour incorporer des données supplémentaires dans un signal codé, selon un format différent du format utilisé pour coder les données du signal codé, et pour enregistrer ledit signal sur un support d'enregistrement de type disque par application de marques d'un premier type physique. Les données supplémentaires sont codées selon un second format, différent du format utilisé pour coder les données du signal codé. Les données de description de format concernant le second format sont enregistrées sur le support d'enregistrement, soit avec des marques du même type physique modulées selon une seconde modulation différente, soit avec des marques d'un second type possédant différentes caractéristiques physiques par rapport au premier type.
CA002342913A 1999-07-02 2000-06-27 Ajout de cles de filigrane selon un format flexible Abandoned CA2342913A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99202163 1999-07-02
EP99202163.4 1999-07-02
PCT/EP2000/005961 WO2001003136A2 (fr) 1999-07-02 2000-06-27 Ajout de cles de filigrane selon un format flexible

Publications (1)

Publication Number Publication Date
CA2342913A1 true CA2342913A1 (fr) 2001-01-11

Family

ID=8240405

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002342913A Abandoned CA2342913A1 (fr) 1999-07-02 2000-06-27 Ajout de cles de filigrane selon un format flexible

Country Status (9)

Country Link
EP (1) EP1145241A2 (fr)
JP (1) JP2003504775A (fr)
KR (1) KR20010074868A (fr)
CN (2) CN1725345A (fr)
AU (1) AU6821400A (fr)
BR (1) BR0006884A (fr)
CA (1) CA2342913A1 (fr)
IL (1) IL141712A0 (fr)
WO (1) WO2001003136A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6449380B1 (en) * 2000-03-06 2002-09-10 Intel Corporation Method of integrating a watermark into a compressed image
TWI304973B (en) * 2003-01-23 2009-01-01 Lg Electronics Inc Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium
WO2004066287A1 (fr) 2003-01-23 2004-08-05 Lg Electronics Inc. Support d'enregistrement avec information facultative, et appareil et procedes pour former, enregistrer, reproduire et controler la reproduction du support d'enregistrement
WO2004066296A1 (fr) 2003-01-24 2004-08-05 Koninklijke Philips Electronics N.V. Procede et dispositif de commande de l'acces a un support de stockage fiable
DE102004021404B4 (de) * 2004-04-30 2007-05-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Wasserzeicheneinbettung
US8209543B2 (en) 2005-09-30 2012-06-26 Nxp B.V. Watermarking of a processing module
WO2007063432A2 (fr) * 2005-11-29 2007-06-07 Koninklijke Philips Electronics N.V. Support d'enregistrement a moyen de protection contre la copie
US8050166B1 (en) * 2010-05-07 2011-11-01 General Electric Company System and method for improved data storage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0930614B1 (fr) * 1991-12-02 2004-03-31 Philips Electronics N.V. Système d'information fermé avec protection de copie
CN1280815C (zh) * 1994-04-18 2006-10-18 松下电器产业株式会社 信息处理装置
TW309612B (fr) * 1994-09-22 1997-07-01 Nippon Bickter Kk
HUP0000832A3 (en) * 1997-01-27 2002-09-30 Koninkl Philips Electronics Nv Embedding supplemental data in an encoded signal
JP4064506B2 (ja) * 1997-09-17 2008-03-19 パイオニア株式会社 電子透かし重畳方法及び検出方法並びに装置

Also Published As

Publication number Publication date
EP1145241A2 (fr) 2001-10-17
AU6821400A (en) 2001-01-22
CN1327585A (zh) 2001-12-19
WO2001003136A3 (fr) 2001-05-03
JP2003504775A (ja) 2003-02-04
WO2001003136A2 (fr) 2001-01-11
KR20010074868A (ko) 2001-08-09
BR0006884A (pt) 2001-10-30
IL141712A0 (en) 2002-03-10
CN1725345A (zh) 2006-01-25

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued