Systems and methods for error resilience and random access...

G - Physics – 11 – B

Patent

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G11B 27/30 (2006.01)

Patent

CA 2633819

Systems and methods for error resilient transmission and for random access in video communication systems are provided. The video communication systems are based on single-layer, scalable video, or simulcast video coding with temporal scalability, which may be used in video communication systems. A set of video frames or pictures in a video signal transmission is designated for reliable or guaranteed delivery to receivers using secure or high reliability links, or by retransmission techniques. The reliably-delivered video frames are used as reference pictures for resynchronization of receivers with the transmitted video signal after error incidence and for random access. Image

L'invention porte sur des systèmes et procédés relatifs à l'élasticité d'erreur et à l'accès aléatoire dans des systèmes de communication vidéo. Lesdits systèmes de communication vidéo utilisent une couche unique, une vidéo scalable, ou un codage vidéo en diffusion simultanée à scalabilité temporelle, leur étant adaptés. On estampille un ensemble de trames ou images vidéo d'une transmission de signaux vidéo comme susceptibles d'une distribution fiable ou garantie à des récepteurs utilisant des liaisons sûres ou de haute fiabilité ou des techniques de retransmission. Les trames vidéo à distribution fiable servent d'images de référence pour la resynchronisation de récepteurs avec le signal vidéo transmis après la survenue d'une erreur ou pour un accès aléatoire.

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