Systems and methods for channel switching

Details Systems and methods for channel switching Systems and methods for channel switching

H - Electricity

04

N

H04N 7/24 (2011.01) H04N 7/50 (2006.01) H04N 7/68 (2006.01)

Patent

CA 2668670

Techniques for video encoding and decoding channel switch frames (CSF) to enable acquisition and re/synchronization of the video stream while preserving compression efficiency is provided. Systems and methods to process multimedia data enabling channel switching are presented. The systems generate a CSF with one or more network adaptation layer (NAL) units as a random access point (RAP) frame. Back-to-back frames are transmitted which include the CSF and a non-RAP frame, each having the same frame ID number.

L'invention concerne des techniques de codage et décodage vidéo de trames de commutation de canaux (CSF) permettant l'acquisition et la resynchronisation de flux vidéo tout en préservant l'efficacité de compression. L'invention concerne des systèmes et procédés de traitement de données multimédia permettant une commutation de canaux. Les systèmes créent un CSF avec une ou plusieurs unités de couches d'adaptation de réseau (NAL) en qualité de trame de point d'accès aléatoire (RAP). Des trames dos-à-dos sont transmises et comprennent le CSF et une trame non RAP, chacun ayant le même numéro d'identification de trame.

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