Expedited digital signal decoding

H - Electricity – 04 – L

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Details

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

Patent

CA 2629320

Expedited digital signal decoding. A multicast or unicast data stream is sent fro a headend to a set-top box at a natural rate. A decoder buffer in the set- top box begins to fill. Once the buffer is partially full, a decoder begins to decode the data at a rate lower than the natural rate. Images are displayed to the user before the buffer is full, allowing for a faster channel change.

L'invention concerne le décodage de signaux numériques envoyés. Un flux de données monodiffusion ou multidiffusion est envoyé d'une tête de réseau à un décodeur à un débit normal. Un tampon du décodeur commence à se remplir. Une fois que ce tampon est partiellement plein, le décodeur commence à décoder les données à un débit inférieur au débit normal. Des images sont affichées pour un utilisateur avant que le tampon ne soit plein, ce qui permet de changer de canal plus rapidement.

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