Dynamic qos in a network distributing streamed content

H - Electricity – 04 – L

Patent

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Details

H04L 12/56 (2006.01) H04L 29/06 (2006.01)

Patent

CA 2730953

In a home network (14) a number of receiving devices (40, 50, 60) are connected to receive streamed audio visual content from one or more sources (10, 20) by way of a network hub (30). One source (10) is a set top box, having a hard disc drive, which provides a real time broadcast stream, stream 1, as well as a recorded output stream, stream 2. Another source (20) is local storage which is capable of outputting its stored content, stream 3, at x32 normal speed, that is, fast forward. If there are bandwidth limitations on the network then the receiver (50) receiving the fast forward stream 3 will experience errors. When errors are detected, the receiver (50) sends a message back to the source (20) which then takes action to reduce the bit rate of its output stream.

L'invention porte sur un réseau domestique (14) dans lequel un certain nombre de dispositifs récepteurs (40, 50, 60) sont connectés pour recevoir un contenu audiovisuel transmis en continu provenant d'une ou plusieurs sources (10, 20) au moyen d'un concentrateur de réseau (30). Une source (10) est un boîtier décodeur, comprenant un lecteur de disque dur, qui fournit un flux de diffusion en temps réel (flux 1) ainsi qu'un flux de sortie enregistré (flux 2). Une autre source (20) est un dispositif de stockage local qui est capable de délivrer son contenu stocké (flux 3), à 32 fois la vitesse normale (x32), c'est-à-dire en avance rapide. S'il existe des limitations de bande passante sur le réseau, alors le récepteur (50) recevant le flux 3 en avance rapide subira des erreurs. Lorsque des erreurs sont détectées, le récepteur (50) renvoie un message à la source (20) qui entreprend alors une action pour réduire le débit binaire de son flux de sortie.

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