Application data table for a multiservice digital...

H - Electricity – 04 – N

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H04N 5/00 (2006.01) H04N 7/24 (2006.01) H04N 7/52 (2006.01)

Patent

CA 2341248

A method of transmission of application data (97) in a digital transport stream characterised in providing an application data table (110) containing information regarding the applications (97) carried in each service (91, 92) within the transport stream. The application data table (110) may conveniently be designated by a fixed PID value and a TID extension value varying in dependence on the bouquet of services chosen. The use of a single application data table to provide information across all services within a bouquet provides a number of advantages, in particular when deciding whether or not to maintain certain applications when switching between services.

L'invention concerne un procédé de transmission de données d'applications (97) dans un flux de transport numérique caractérisé en ce qu'il fournit une table (110) de données d'applications contenant des informations concernant les applications (97) exécutées dans chaque service (91, 92) à l'intérieur du flux de transport. La table (110) de données d'applications peut commodément être conçue par une valeur fixe de l'identificateur de paquet (PID) et une valeur d'extension de l'identificateur de table (TID) variant en fonction du bouquet des services choisis. L'emploi d'une table de données d'application simple, permettant de fournir des informations à travers tous les services à l'intérieur du bouquet, offre plusieurs avantages, notamment lorsque l'on décide s'il y a lieu de maintenir ou non certaines applications lors de la commutation entre les services.

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