Patent ID: 7133903

Claim:
A digital broadcast system, comprising: a digital broadcast transmitter, comprising: an encoder that encodes video data, audio data, and an application; and a transmitter that transmits the encoded video data, audio data, and application; and a digital broadcast receiver, comprising: a receiver that receives the encoded video data, audio data, and application transmitted by the digital broadcast transmitter; a decoder that decodes the received encoded video data, audio data and application; a processor that executes the decoded application; an input section that receives an input from a user; and an event controlling program that sends an event corresponding to the user input to the executing decoded application, wherein the executing decoded application registers receivable event information in the digital broadcast receiver that identifies the event that can be received by the executing decoded application, the event controlling program sending the event corresponding to the user input to the executing decoded application when the receivable event information identifies that the event corresponding to the user input can be received by the executing decoded application.