Method and device for assembling forward error correction...

H - Electricity – 04 – N

Patent

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H04N 7/66 (2006.01)

Patent

CA 2661320

In a RTP stream having a plurality of FEC frames containing source blocks of media packets, random access points are inserted in front of the source blocks so as to allow a media decoder to decode the media packets as soon as FEC decoding is finished. In particular, the media packets contain forward error correction (FEC) source blocks for a multimedia broadcast/ multicast-based streaming service content. As the multimedia broadcast/ multicast streaming service includes dynamic interactive multimedia scene content where the source RTP packets of different media along with the FEC RTP packets are transmitted as separate RTP streams, the inclusion of the random access point facilitates immediate rendering of the dynamic interactive multimedia scene content after FEC decoding, thus reducing the tune-in latency.

Dans un flux RTP comprenant une pluralité de trames FEC contenant des blocs source de paquets de données, des points d'accès aléatoires sont insérés devant les blocs source pour permettre ainsi à un décodeur de données de décoder les paquets de données dès la fin du décodage FEC. De manière plus particulière, les paquets de données contiennent des blocs source de correction aval des erreurs (FEC) pour un contenu de service de diffusion multimédia/diffusion en continu de type multidiffusion. Étant donné que le service de diffusion multimédia diffusion en continu multidiffusion comprend un contenu de scène multimédia interactif dynamique dans lequel les paquets RTP source de différents médias ainsi que les paquets RTP FEC sont transmis sous forme de flux séparés, le fait d'inclure des points d'accès aléatoires facilite le rendu immédiat du contenu de scène interactif dynamique après le décodage FEC, ce qui réduit ainsi la latence de réglage.

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