Method and apparatus for decoding a data stream in audio...

H - Electricity – 04 – N

Patent

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H04N 5/44 (2011.01) H04N 5/445 (2011.01)

Patent

CA 2530656

A method for decoding a data stream containing audio/video substreams (14) and control substreams comprises buffering nodes (12) having the possibility to buffer multiple data packets in the same buffer. This may be achieved by having separate parameters for the allocated buffer size and any stored packet. Thus, not only multiple packets may be stored in the buffering node (12), but also such node may exist while its buffer is empty, so that the node may be reused later. This is particularly useful for buffering and selectively accessing multiple audio packets in MPEG-4 audio nodes or sound nodes.

L'invention concerne un procédé de décodage de flux de données contenant des sous-flux audio/vidéo (14) et des sous-flux de commande. Ce procédé consiste à mettre en tampon des noeuds (12) permettant la mise en tampon de paquets de données multiples dans le même tampon. Cela est réalisé au moyen de paramètres distincts pour la taille du tampon attribué et pour tout paquet stocké. Ainsi, non seulement des paquets multiples peuvent être stockés dans le noeud de mise en tampon (12), mais ce noeud peut également exister lorsque son tampon est vide, ce qui permet de le réutiliser ultérieurement. Ce procédé est particulièrement utile dans la mise en tampon et l'accès sélectif à des paquets audio multiples dans des noeuds audio MPEG-4 ou dans des noeuds sonores.

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