Hybrid rate control in a digital stream transcoder

H - Electricity – 04 – N

Patent

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Details

H04N 7/26 (2006.01) G06T 9/00 (2006.01) H04N 7/30 (2006.01) H04N 7/32 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2534046

A rate controller in run-level domain transcoder, which receives a stream of compressed frames carried in a bit stream, selectively determines whether to quantize and/or threshold portions of a frame carried in the stream of frames. The rate controller determines the input size of the frame and based at least in part upon at least a desired size, requantizes and/or thresholds the frame such that the output size of the frame is approximately the desired size.

L'invention concerne un contrôleur de débit dans un transcodeur à domaine de niveau d'exécution, qui reçoit un flux de trame compressé transporté dans un flux binaire, déterminant de façon sélective si les parties d'une trame transportées dans un flux de trames doivent être quantifiées et/ou si un seuil doit être établi. Le contrôleur de débit détermine la taille d'entrée de la trame et sur la base, du moins partiellement, d'au moins une taille recherchée, quantifie une nouvelle fois la trame et/ou en établit un seuil de sorte que la taille de cette partie de la trame représente approximativement la taille recherchée.

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