Patent ID: 8978083
Filing Date: 2015-03-10
Classification: H04H,H04N

Abstract:
1. A method for a broadcast receiving device to receive a broadcast, comprising: receiving a broadcast stream including audio or video; receiving a trigger action for a trigger, and the trigger including an identifier for identifying a triggered declarative object (TDO) and a trigger time, extracting the identifier from the trigger; and changing a state of the TDO identified by the identifier based on the trigger, wherein allowed values for the state of the TDO include a released state, a ready state, an active state and a suspended state, wherein changing the state of the TDO comprises: transiting the state of the TDO to the ready state in the trigger time, when the trigger action represents a preparation and a receiving time of the trigger is before the trigger time, and immediately transiting the state of the TDO to the ready state when the trigger action represents a preparation and a receiving time of the trigger is after the trigger time.