Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

1. WO2007145686 - AMÉLIORATIONS DES PERFORMANCES DES VIDÉOCONFÉRENCES

Numéro de publication WO/2007/145686
Date de publication 21.12.2007
N° de la demande internationale PCT/US2007/004644
Date du dépôt international 21.02.2007
CIB
H04Q 7/24 2006.01
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
QSÉLECTION
7Dispositifs de sélection auxquels les abonnés sont reliés par des liaisons radio-électriques ou des liaisons inductives
20dans lesquels les liaisons radio-électriques ou inductives sont bidirectionnelles, p.ex. systèmes radio-mobiles
24utilisant des centraux ou des réseaux publics avec intégration au moins partielle du service ou de l'application mobiles
H04N 7/14 2006.01
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
NTRANSMISSION D'IMAGES, p.ex. TÉLÉVISION
7Systèmes de télévision
14Systèmes à deux voies
H04M 11/06 2006.01
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
MCOMMUNICATIONS TÉLÉPHONIQUES
11Systèmes de communication téléphonique spécialement adaptés pour être combinés avec d'autres systèmes électriques
06Transmission simultanée téléphonique et de données, p.ex. transmission télégraphique sur les mêmes conducteurs
CPC
H04L 63/065
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
63Network architectures or network communication protocols for network security
06for supporting key management in a packet data network
065for group communications
H04N 21/2662
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
266Channel 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
2662Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
H04N 21/64769
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client ; , e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
63Control signaling ; related to video distribution; between client, server and network components; Network processes for video distribution between server and clients ; or between remote clients; , e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
647Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
64746Control signals issued by the network directed to the server or the client
64761directed to the server
64769for rate control
H04N 21/64792
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client ; , e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
63Control signaling ; related to video distribution; between client, server and network components; Network processes for video distribution between server and clients ; or between remote clients; , e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
647Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
64784Data processing by the network
64792Controlling the complexity of the content stream, e.g. by dropping packets
H04N 7/15
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
14Systems for two-way working
15Conference systems
Déposants
  • MICROSOFT CORPORATION [US/US]; One Microsoft Way Redmond, Washington 98052-6399, US (AllExceptUS)
Inventeurs
  • MOORE, Tim M.; US
  • KUKOLECA, Dalibor; US
  • ZHONG, Wei; US
  • BARKLEY, Warren V.; US
  • LEVIN, Danny; US
Données relatives à la priorité
11/454,59316.06.2006US
Langue de publication anglais (EN)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) PERFORMANCE ENHANCEMENTS FOR VIDEO CONFERENCING
(FR) AMÉLIORATIONS DES PERFORMANCES DES VIDÉOCONFÉRENCES
Abrégé
(EN)
A conference server may request a key frame from a conference participant in response to determining that the conference participant should become a most active participant, and the conference server may make the conference participant the most active participant in response to receiving the key frame from the conference participant.
(FR)
L'invention concerne un serveur de conférence susceptible de demander une image clé à un participant à la conférence en réponse à l'action consistant à déterminer que le participant à la conférence devrait devenir un participant plus actif, le serveur de conférence pouvant faire d'un participant à la conférence le participant le plus actif en réponse à l'action consistant à recevoir l'image clé du participant à la conférence.
Également publié en tant que
RU2008149526
Dernières données bibliographiques dont dispose le Bureau international