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1. WO2012007262 - SYSTÈME ET PROCÉDÉ PERMETTANT D'ÉVITER LA MANIPULATION DE DONNÉES VIDÉO TRANSMISES

Numéro de publication WO/2012/007262
Date de publication 19.01.2012
N° de la demande internationale PCT/EP2011/060651
Date du dépôt international 24.06.2011
CIB
G06F 21/00 2006.01
GPHYSIQUE
06CALCUL; COMPTAGE
FTRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES
21Dispositions de sécurité pour protéger les calculateurs, leurs composants, les programmes ou les données contre une activité non autorisée
H04N 7/24 2011.01
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
NTRANSMISSION D'IMAGES, p.ex. TÉLÉVISION
7Systèmes de télévision
24Systèmes pour la transmission de signaux de télévision utilisant la modulation par impulsions codées
CPC
H04N 21/2541
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
25Management 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
254Management at additional data server, e.g. shopping server, rights management server
2541Rights Management
H04N 21/43635
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
436Interfacing a local distribution network, e.g. communicating with another STB or inside the home ; ; Interfacing an external card to be used in combination with the client device
4363Adapting the video ; or multiplex; stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
43632involving a wired protocol, e.g. IEEE 1394
43635HDMI
H04N 21/43637
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
436Interfacing a local distribution network, e.g. communicating with another STB or inside the home ; ; Interfacing an external card to be used in combination with the client device
4363Adapting the video ; or multiplex; stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
43637involving a wireless protocol, e.g. Bluetooth or wireless LAN
H04N 21/4367
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
436Interfacing a local distribution network, e.g. communicating with another STB or inside the home ; ; Interfacing an external card to be used in combination with the client device
4367Establishing a secure communication between the client and a peripheral device or smart card
H04N 21/835
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
83Generation or processing of protective or descriptive data associated with content; Content structuring
835Generation of protective data, e.g. certificates
Déposants
  • NAGRAVISION S.A. [CH/CH]; Route de Genève 22-24 CH-1033 Cheseaux-sur-Lausanne, CH (AllExceptUS)
  • KUDELSKI, André [CH/CH]; CH (UsOnly)
  • NICOLAS, Christophe [CH/CH]; CH (UsOnly)
Inventeurs
  • KUDELSKI, André; CH
  • NICOLAS, Christophe; CH
Mandataires
  • LEMAN CONSULTING S.A.; Chemin de Précossy 31 CH-1260 Nyon, CH
Données relatives à la priorité
10185371.101.10.2010EP
61/364,83416.07.2010US
Langue de publication anglais (EN)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) SYSTEM AND METHOD TO PREVENT MANIPULATION OF TRANSMITTED VIDEO DATA
(FR) SYSTÈME ET PROCÉDÉ PERMETTANT D'ÉVITER LA MANIPULATION DE DONNÉES VIDÉO TRANSMISES
Abrégé
(EN)
The aim of the invention is to provide a solution to ensure that the content sent by the IRD is the content effectively displayed on the screen. It is then proposed a system to prevent manipulation of transmitted video data comprising an Integrated Receiver Decoder (IRD) receiving audio/video data, a display device (TV), said IRD comprising means to transmit an HDMI compliant audio/video stream toward the display device, characterized in that the system further comprises means to add an over-encryption layer to said HDMI/HDCP stream before reaching the display device and means to remove this added encryption layer so as to recover said HDMI/HDCP stream, before processing said HDMI/HDCP stream by said display device.
(FR)
Le but de l'invention est de proposer une solution pour s'assurer que le contenu envoyé par l'IRD est le contenu effectivement affiché sur l'écran. On propose donc un système permettant d'éviter la manipulation de données vidéo transmises comprenant un récepteur décodeur intégré (IRD) recevant des données audio/vidéo et un dispositif d'affichage (TV), ledit IRD comprenant des moyens pour transmettre un flux audio/vidéo compatible HDMI vers le dispositif d'affichage, caractérisé en ce que le système comprend en outre des moyens pour ajouter une couche de sur-cryptage audit flux HDMI/HDCP avant d'atteindre le dispositif d'affichage et des moyens pour enlever cette couche de cryptage supplémentaire afin de récupérer ledit flux HDMI/HDCP, avant le traitement dudit flux HDMI/HDCP par ledit dispositif d'affichage.
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