Triggering enhanced content

Details Triggering enhanced content Triggering enhanced content

H - Electricity

04

N

H04N 21/435 (2011.01) H04N 21/433 (2011.01)

Patent

CA 2568124

A receiver for an enhanced television system in which video data defining a video stream, enhanced content data defining items of enhanced content, and trigger messages for triggering the play-out of the enhanced content are transmitted to receivers over a data network, the receiver comprising an enhanced content decoder for receiving and playing out enhanced content, and the enhanced content decoder comprising: a cache for caching enhanced content data received from the network; and a play-out controller for controlling the play-out of enhanced content, the play-out controller being arranged to receive trigger messages over the network and on receiving a trigger message that indicates an item of enhanced content for which enhanced content data is stored in the cache and that is to be played out, to play out that item of enhanced content data at a time indicated by the trigger message, and on receiving a trigger message that includes a definition of enhanced content, to play out the enhanced content defined in the trigger message at a time indicated by the trigger message.

L'invention porte sur un récepteur de télévision amélioré dans lequel: les données vidéo constituant un flux vidéo, les données améliorées de contenu constituant un contenu amélioré, et des messages gâchettes déclenchant la lecture du contenu amélioré, sont transmis via un réseau de données à des récepteurs comportant un décodeur de contenu amélioré recevant et lisant le contenu amélioré. Un tel décodeur comporte: un cache des données de contenu amélioré reçues via le réseau, et un contrôleur de lecture du contenu amélioré. Ledit contrôleur: au reçu, via le réseau, d'un message gâchette indiquant un élément de contenu amélioré dont les données sont stockées dans le cache, commande sa lecture au moment précisé par le message gâchette; et au reçu d'un message gâchette contenant une définition de contenu amélioré, commande sa lecture au moment précisé par le message gâchette.

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