Method and apparatus for frame prediction in hybrid video...

H - Electricity – 04 – N

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H04N 7/46 (2006.01) G06T 9/00 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2562172

The invention is directed to a method and apparatus for providing temporal scaling frames for use in digital multimedia. The method involves using a removable unidirectional predicted temporal scaling frame communication along with intra-coded frames and/or inter-coded frames. The method involves the ability to selectively remove the temporal scaling frame(s) from being transmitted or decoded in order to satisfy, for example, power limits, data rate limits, computational limits or channel conditions. Examples presented include encoders, transcoders and decoders where the decision to drop the removable temporal scaling frames could be made.

L'invention concerne un procédé et un dispositif permettant d'obtenir des trames à redimensionnement temporel s'utilisant dans des multimédia numériques. Le procédé consiste à utiliser une communication unidirectionnelle par trames redimensionnables à logique de prédiction retirables conjointement avec des trames intra-codeés ou inter-codées. Ce procédé repose sur la capacité d'empêcher sélectivement la ou les trames de redimensionnement temporel d'être transmises ou décodées au gré, par exemple, des limites de puissance, de débit binaire, de calcul ou bien des conditions de canal. Sont présentés des exemples de codeurs, transcodeurs et décodeurs dans le cas desquels la décision peut être prise d'abandonner des trames à redimensionnement temporel retirables.

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