Patent ID: 7480008

Claim:
A method for controlling a video apparatus including at least one internal device for video processing, the method comprising: receiving a video signal and an audio signal; detecting an external delay time associated with the video signal according to external delay information corresponding to one of an external video source providing the audio and video signals to the video apparatus or an external device providing the audio and video signals to the video apparatus, wherein the external delay information is received from the external video source or external device and provides an indication of a period of video processing delay that occurs in the external video source or the external device; detecting an internal delay time associated with the video signal; summing the internal delay time and the external delay time; and synchronizing the received audio signal with the received video signal by delaying the received audio signal on the basis of the summed internal delay time and the external delay time, wherein the external video source or the external device includes a set-top box and the external delay information provides an indication of the period of video processing delay that occurs in the set-top box, and wherein the video apparatus includes a television coupled to the set-top box.