System and method for decoding using parallel processing

H - Electricity – 04 – N

Patent

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H04N 7/24 (2011.01)

Patent

CA 2736888

A method for decoding a stream of encoded video data is disclosed. The video stream includes partitions that have been compressed using lossless encoding. Each partition includes rows that have also been encoded using intra-frame or interframe encoding, for example. During the decoding process, two or more of the partitions are entropy decoded on two or more processors in parallel, except that partitions containing adjacent rows in the frame are decoded with an offset so that at least a portion of the output of the entropy decoding of one partition can be used as input in the entropy and intra/inter-frame decoding of the other.

Linvention concerne un procédé de décodage dun flux de données vidéo codées. Le flux vidéo comprend des partitions qui ont été compressées au moyen dun codage sans pertes. Chaque partition comprend des rangées qui ont également été codées au moyen, par exemple dun codage intra-trame ou inter-trame. Pendant le procédé de décodage, deux partitions ou plus sont décodées par entropie sur deux processeurs ou plus en parallèle, à lexception des partitions contenant des rangées adjacentes dans la trame qui sont décodées avec un décalage de sorte quau moins une partie de la sortie du décodage entropique dune partition peut être utilisée comme entrée dans le décodage entropique et intra/inter trames de lautre.

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