Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

1. WO2005004458 - PROCEDES ET APPAREIL DESTINES A FOURNIR UN FLUX A CRYPTAGE DOUBLE PARTIEL DANS UN SYSTEME A RECOUVREMENT D'ACCES CONDITIONNEL

Numéro de publication WO/2005/004458
Date de publication 13.01.2005
N° de la demande internationale PCT/US2004/019508
Date du dépôt international 18.06.2004
Demande présentée en vertu du Chapitre 2 20.01.2005
CIB
H04L 9/00 2006.01
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
9Dispositions pour les communications secrètes ou protégées
CPC
H04J 2203/008
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
2203Aspects of optical multiplex systems other than those covered by H04J14/00
0001Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
0073Services, e.g. multimedia, GOS, QOS
008Support of video
H04L 2463/101
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2463Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00
101applying security measures for digital rights management
H04L 63/0428
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
63Network architectures or network communication protocols for network security
04for providing a confidential data exchange among entities communicating through data packet networks
0428wherein the data content is protected, e.g. by encrypting or encapsulating the payload
H04L 63/0478
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
63Network architectures or network communication protocols for network security
04for providing a confidential data exchange among entities communicating through data packet networks
0428wherein the data content is protected, e.g. by encrypting or encapsulating the payload
0478applying multiple layers of encryption, e.g. nested tunnels or encrypting the content with a first key and then with at least a second key
H04N 21/2265
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
21Server components or server architectures
226Characteristics of the server or; Internal components of the server
2265Server identification by a unique number or address, e.g. serial number
H04N 21/2347
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
23Processing of content or additional data; Elementary server operations; Server middleware
234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
2347involving video stream encryption
Déposants
  • SCIENTIFIC-ATLANTA, INC. [US/US]; 5030 Sugarloaf Parkway Lawrenceville, GA 30044, US (AllExceptUS)
  • PINDER, Howard G. [US/US]; US (UsOnly)
  • WOODWARD, William D. Jr. [US/US]; US (UsOnly)
  • EVANS, Jonathan Bradford [US/US]; US (UsOnly)
  • WASILEWSKI, Anthony J. [US/US]; US (UsOnly)
Inventeurs
  • PINDER, Howard G.; US
  • WOODWARD, William D. Jr.; US
  • EVANS, Jonathan Bradford; US
  • WASILEWSKI, Anthony J.; US
Mandataires
  • COUTURIER, Shelley L. ; Scientific-Atlanta, Inc. Intellectual Property Dept. 5030 Sugarloaf Parkway Lawrenceville, GA 30044, US
  • LAFFERTY, Wm. Brook; Scientific-Atlanta, Inc. 5030 Sugarloaf Parkway Lawrenceville, GA 30044, US
Données relatives à la priorité
10/602,98625.06.2003US
10/629,83930.07.2003US
Langue de publication anglais (EN)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) METHODS AND APPARATUS FOR PROVIDING A PARTIAL DUAL-ENCRYPTED STREAM IN A CONDITIONAL ACCESS OVERLAY SYSTEM
(FR) PROCEDES ET APPAREIL DESTINES A FOURNIR UN FLUX A CRYPTAGE DOUBLE PARTIEL DANS UN SYSTEME A RECOUVREMENT D'ACCES CONDITIONNEL
Abrégé
(EN)
The present invention is directed towards providing a partial dual-encrypted stream in a conditional access overlay system. The headend equipment includes an aligner, identifier, and remapper (AIR) device (615) that receives a clear stream and one or two encrypted streams, where the two encrypted streams have been encrypted by two different encryption schemes. The AIR device (615) identifies critical packets associated with the clear stream and subsequently allows two encrypted streams to pass and drops the critical packets of the clear stream. A multiplexer (640) then combines a percentage of the non-critical packets of the clear stream and the critical packets of the two encrypted streams to provide the partial dual-encrypted stream.
(FR)
L'invention concerne la création du flux à cryptage double partiel dans un système à recouvrement d'accès conditionnel. L'équipement à tête de station comprend un aligneur, un identificateur, un dispositif de remappage (AIR) (615) qui permet de recevoir un flux non crypté et un ou plusieurs flux cryptés, le deux flux cryptés ayant été cryptés au moyen de deux schémas de cryptage différents. Le dispositif AIR (615) identifie des paquets critiques associés au flux non crypté, puis permet aux deux flux cryptés de passer et de lâcher les paquets critiques du flux non crypté. Un multiplexeur (640) combine ensuite un pourcentage de paquets non critiques du flux non crypté et les paquets critiques des deux flux cryptés afin de fournir un flux à cryptage double partiel.
Dernières données bibliographiques dont dispose le Bureau international