Patent ID: 8130844

Claim:
A synchronized playback apparatus for outputting a video and audio signal from superimposed video and audio data respectively comprising: a data separation unit for separating the video data and the audio data; a video buffer for temporarily holding video data separated by the data separation unit; an audio buffer for temporarily holding audio data separated by the data separation unit; a video decoder for decoding video data temporarily held in the video buffer and outputting a video signal; an audio decoder for decoding audio data temporarily held in the audio buffer and outputting an audio signal; and a synchronization control unit for determining a timing for an audio signal to be outputted by the audio decoder according to an amount of video data accumulated in the video buffer and a bit rate for video data decoded by the video decoder, wherein the synchronization control unit is configured to determine the timing for the audio signal according to the amount of video accumulated in the video buffer and the bit rate in response to a determination that a presentation time stamp (PTS) is not included in the audio signal.