Patent ID: 8918805

Claim:
A method for synchronizing contextual interactive content with audio and/or video of television broadcasting, comprising: a) delivering an application for digital television in broadcast digital television signal; b) downloading the application on to a digital television receiver apparatus; and c) executing the application in a standardized execution environment for digital television in which synchronization is implemented, wherein the application is sent by a broadcaster and, when executed, the application comprises: i) registering as a DSM-CC events listener with event messages that define values of a counter that comprises: values corresponding to the synchronicity between the interactive content and the audio and/or video; and time interval values that instruct when the application executed will check whether the interactive content is in synchronization with the audio and/or video; ii) identifying a sequence value corresponding to the synchronization and a time interval value sent by the event messages transmitted via DSM-CC; iii) initiating timer and own counter; iv) synchronizing the interactive content data of the application in execution with the audio and/or video of the TV broadcasting in accordance with the value sent by the DSM-CC stream event at each pre-set time interval; v) maintaining an ascending count of the sequence value; and vi) keeping check on the synchronicity in the same time interval informed by the stream events of the protocol even in the absence of the signal, by way of the timer and counter initiated in item ii).