WO2003043304A3 - Procede de fourniture d'images fixes ou animees avec controle d'acces - Google Patents

Procede de fourniture d'images fixes ou animees avec controle d'acces Download PDF

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Publication number
WO2003043304A3
WO2003043304A3 PCT/FR2002/003860 FR0203860W WO03043304A3 WO 2003043304 A3 WO2003043304 A3 WO 2003043304A3 FR 0203860 W FR0203860 W FR 0203860W WO 03043304 A3 WO03043304 A3 WO 03043304A3
Authority
WO
WIPO (PCT)
Prior art keywords
access control
image
quantization table
dct coefficients
animated images
Prior art date
Application number
PCT/FR2002/003860
Other languages
English (en)
Other versions
WO2003043304A2 (fr
Inventor
Jean-Noel Morlet
Original Assignee
France Telecom
Jean-Noel Morlet
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 France Telecom, Jean-Noel Morlet filed Critical France Telecom
Priority to AU2002361314A priority Critical patent/AU2002361314A1/en
Publication of WO2003043304A2 publication Critical patent/WO2003043304A2/fr
Publication of WO2003043304A3 publication Critical patent/WO2003043304A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/18—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/88—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving rearrangement of data among different coding units, e.g. shuffling, interleaving, scrambling or permutation of pixel data or permutation of transform coefficient data among different blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8358—Generation of protective data, e.g. certificates involving watermark
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

L'invention concerne un procédé de transmission avec contrôle d'accès d'au moins une image ayant subi une transformation DCT.• Selon l'invention,préalablement ô l'émission, - on dégrade partiellement la qualité de l'image par flou en modifiant une partie des valeurs de la table de quantification prédéfinie (8),- on permute les coefficients DCT d'un groupe prédéterminé (12) de coefficients DCT, - on transmet les informations de contrôle d'accès et la table de quantification modifiée avec l'image dégradée, • ô la réception, - on extrait les données de contrôle d'accès, et si l'accès est autorisé, alors- on restaure la table de quantification prédéfinie (8), - on permute en sens inverse les coefficients DCT préalablement permutés, sinon,- on délivre l'image dégradée.
PCT/FR2002/003860 2001-11-13 2002-11-12 Procede de fourniture d'images fixes ou animees avec controle d'acces WO2003043304A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002361314A AU2002361314A1 (en) 2001-11-13 2002-11-12 Method for providing fixed or animated images with access control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR01/14638 2001-11-13
FR0114638A FR2832280B1 (fr) 2001-11-13 2001-11-13 Procede de fourniture d'images fixes ou animees avec controle d'acces

Publications (2)

Publication Number Publication Date
WO2003043304A2 WO2003043304A2 (fr) 2003-05-22
WO2003043304A3 true WO2003043304A3 (fr) 2004-04-08

Family

ID=8869322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2002/003860 WO2003043304A2 (fr) 2001-11-13 2002-11-12 Procede de fourniture d'images fixes ou animees avec controle d'acces

Country Status (3)

Country Link
AU (1) AU2002361314A1 (fr)
FR (1) FR2832280B1 (fr)
WO (1) WO2003043304A2 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742544A (en) * 1984-07-09 1988-05-03 Kupnicki Richard A Television transmission network with scrambling and descrambling
EP0860984A2 (fr) * 1997-02-19 1998-08-26 Fujitsu Limited Procédé d'intégration/extraction d'information d'identification filigrane dans des données d'image et appareil pour cela, et milieu lisible par ordinateur
EP0920209A1 (fr) * 1997-11-26 1999-06-02 THOMSON multimedia Procédé et dispositif d'embrouillage et de désembrouillage de données vidéo numériques
EP0935396A2 (fr) * 1998-02-09 1999-08-11 Matsushita Electric Industrial Co., Ltd. Appareil et méthode de codage vidéo
WO2000052923A1 (fr) * 1999-03-02 2000-09-08 Koninklijke Philips Electronics N.V. Procede et dispositif de brouillage et de desembrouillage d'information
US6285775B1 (en) * 1998-10-01 2001-09-04 The Trustees Of The University Of Princeton Watermarking scheme for image authentication
FR2806231A1 (fr) * 2000-03-08 2001-09-14 France Telecom Procede de transmission d'informations avec controle d'acces en filigrane numerique et dispositifs de mise en oeuvre

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742544A (en) * 1984-07-09 1988-05-03 Kupnicki Richard A Television transmission network with scrambling and descrambling
EP0860984A2 (fr) * 1997-02-19 1998-08-26 Fujitsu Limited Procédé d'intégration/extraction d'information d'identification filigrane dans des données d'image et appareil pour cela, et milieu lisible par ordinateur
EP0920209A1 (fr) * 1997-11-26 1999-06-02 THOMSON multimedia Procédé et dispositif d'embrouillage et de désembrouillage de données vidéo numériques
EP0935396A2 (fr) * 1998-02-09 1999-08-11 Matsushita Electric Industrial Co., Ltd. Appareil et méthode de codage vidéo
US6285775B1 (en) * 1998-10-01 2001-09-04 The Trustees Of The University Of Princeton Watermarking scheme for image authentication
WO2000052923A1 (fr) * 1999-03-02 2000-09-08 Koninklijke Philips Electronics N.V. Procede et dispositif de brouillage et de desembrouillage d'information
FR2806231A1 (fr) * 2000-03-08 2001-09-14 France Telecom Procede de transmission d'informations avec controle d'acces en filigrane numerique et dispositifs de mise en oeuvre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZENG W ET AL: "EFFICIENT FREQUENCY DOMAIN VIDEO SCRAMBLING FOR CONTENT ACCESS CONTROL", ACM MULTIMEDIA, PROCEEDINGS OF THE INTERNATIONAL CONFERENCE, NEW YORK, NY, US, 30 October 1999 (1999-10-30), pages 285 - 294, XP000956270 *

Also Published As

Publication number Publication date
FR2832280B1 (fr) 2004-04-02
AU2002361314A1 (en) 2003-05-26
FR2832280A1 (fr) 2003-05-16
WO2003043304A2 (fr) 2003-05-22

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