Arrangement and method for transmitting and receiving video...

Details Arrangement and method for transmitting and receiving video... Arrangement and method for transmitting and receiving video...

H - Electricity

04

N

H04N 7/08 (2006.01) G06T 9/00 (2006.01) H04N 5/50 (2006.01) H04N 5/44 (2006.01) H04N 5/445 (2006.01) H04N 5/45 (2006.01) H04N 7/24 (2006.01) H04N 7/58 (2006.01) H04N 7/16 (2006.01)

Patent

CA 2187796

MPEG2- based transmission systems transmit a large number of digital television programs in a single physical channel. Disclosed herein is a "Channel Navigation System" which allows a user to get an overview of the digital programs provided, and to easily select a desired program. The method of the invention includes the transmission (in a separate program of a transport stream) of a video stream representing a mosaic picture, the sub-pictures of which are miniature versions of the video stream of other programs in that transport stream. The method further includes the transmission of information which links the position of each sub-picture within the mosaic picture with the program number from which the sub-picture is derived. The user selects a desired program by merely "pointing and clicking" its miniature version in the mosaic picture.

Cette invention se rapporte à des systèmes de transmission de type MPEG2, qui transmettent un grand nombre de programmes de télévision numériques dans un canal physique. Cette invention propose un système qui permet de naviguer entre les canaux, grâce auquel l'utilisateur peut avoir une vue d'ensemble des programmes numériques proposés et sélectionner facilement le programme désiré. Le procédé décrit dans cette invention consiste à transmettre (dans un programme séparé d'un courant de transport de données) un courant de données vidéo représentant une image en mosaïque, dont les sous-images sont des versions miniatures du courant de données vidéo des autres programmes du courant de transport de données. Ce procédé consiste en outre à transmettre les informations qui relient la position de chaque sous-image dans l'image en mosaïque avec le numéro de programme d'où est tirée la sous-image. L'utilisateur choisit un programme désiré simplement en pointant et en cliquant sur sa version miniature dans l'image en mosaïque.

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