Adaptive motion compensation for digital television

H - Electricity – 04 – N

Patent

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Details

H04N 9/64 (2006.01) H04N 7/015 (2006.01) H04N 7/26 (2006.01) H04N 7/36 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2044118

A method and apparatus are provided for processing digital video signals for transmission in a compressed form. A set of pixel data is compressed without motion compensation to provide a first compressed video signal. The pixel data is compressed using motion compensation to provide a second compressed video signal. The data in the first and second compressed video signals is quantified. A comparison is made to determine which of the signals contains the least data. Successive sets of pixel data are sequentially compressed and quantified and the compressed video signal having the least data for each particular set is selected. The selected signals are encoded to identify them as motion compensated or non-motion compensated signals, and combined to provide a compressed video signal data stream for transmission. Apparatus for receiving and decoding the signals is also disclosed.

Méthode et appareil permettant de traiter des signaux vidéo numériques pour les transmettre sous forme comprimée. Un ensemble de données de pixels est comprimé sans compensation de mouvement afin de produire un premier signal vidéo comprimé. Les données du premier et du deuxième signal vidéo comprimé sont quantifiées. Une comparaison est effectuée afin de déterminer lequel des signaux contient le moins de données. Des ensembles successifs de données de pixels sont comprimées séquentiellement et quantifiées, et le signal vidéo comportant le moins de données pour chaque ensemble particulier est sélectionné. Les signaux sélectionnés sont codés afin d'indiquer s'il s'agit ou non de signaux à compensation de mouvement, puis combinés pour produire un train de données de signaux vidéo comprimés à transmettre. L'appareil de réception et de décodage des signaux est également présenté.

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