Processing mode selection for channels in a video...

Details Processing mode selection for channels in a video... Processing mode selection for channels in a video...

H - Electricity

04

N

H04N 7/26 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2422125

An efficient processing system, such as for transcoding video data. In an embodiment that is suitable for single or multiple processor embodiments, a processing mode is set for each input video frame, e.g., as a full transcode mode (740), which uses motion compensation, a requantization mode (755), which avoids motion compensation, or a bypass mode (750). The processing mode selection is based on a number or processing cycles that are available to process a frame, and an expected processing requirement of the frame. The bypass or requantization modes are selected to avoid a buffer overflow of the processor.

L'invention concerne un système de traitement efficace, notamment destiné à transcoder des données vidéo. Dans une réalisation, valable pour des réalisations à mono- ou multiprocesseurs, on établit un mode de traitement pour chaque trame vidéo d'entrée, par exemple, en tant que mode de transcodage complet (740), utilisant une compensation de mouvement, mode de requantification (755), évitant une compensation de mouvement, ou mode de dérivation (750). La sélection du mode de traitement est basée sur un nombre de cycles de traitement, disponibles pour traiter une trame, et sur un besoin attendu de traitement de la trame. Les modes de dérivation ou de requantification sont sélectionnés afin d'éviter un débordement de tampon du processeur.

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