Video apparatus and method for controlling the same

A video apparatus, comprising:

• a video/audio processor for transforming a received video signal into a signal that can be displayed and a received audio signal into a signal that can be outputted, respectively, said video/audio processor including at least one internal device for video processing;
• a controller for 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, for detecting an internal delay time associated with the video signal, and for summing the internal delay time and the external delay time;
• and
• a delay for delaying the received audio signal by the summed internal delay time and external delay time, wherein the external delay information used as a basis for determining the external delay time provides an indication of a period of video processing delay that occurs in the external video source or the external device, 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.

A video apparatus, comprising:

• a video/audio processor for respectively processing a received video signal and a received audio signal, said video/audio processor including at least one internal device for video processing;
• a memory for storing internal delay time information indicating an internal delay time corresponding to each internal device for video processing and for storing external delay time information indicating an external delay time associated with the video signal corresponding to each of a plurality of external devices for providing the audio and video signals to the video apparatus and indicating an external delay time associated with the video signal corresponding to each of a plurality of video sources for providing the audio and video signals to the video apparatus;
• a controller configured to receive external delay information corresponding to one of the plurality of video sources or external devices, the received external delay information indicative of one of a period of delay in a specific video source or a specific external device, said controller detecting an internal delay time associated with the video signal, by summing delay times for each of the at least one internal device for video processing, and detecting an external delay time associated with the video signal according to the received external delay information;
• and
• a delay for delaying the received audio signal by the detected internal delay time and for further delaying the received audio signal by the external delay time according to the external delay time detection, wherein said one of the plurality of video sources or external devices 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.