Patent ID: 6363207
Filing Date: 2002-03-26
Classification: H04N

Abstract:
A method of operating a digital audio/video processor comprising a demultiplexer receiving raw audio and video data representing respective audio and images to be displayed and providing demultiplexed audio and video data for storage in a memory and a CPU for decoding the demultiplexed audio and video data from the memory and playing back decoded audio and video data in response to user selections to selectively play back the audio and video data in a standard mode or a trick play mode, the audio and video data including respective audio and video presentation time stamp (â€œPTSâ€ ) values, each audio and video PTS value representing a desired time and sequence of presentation of respective audio and video data, and the video data including video PTS values representing a desired time and sequence of presentation of the video data, the method comprising:incrementing a first system time clock in real time to provide first time values; comparing in response to the standard play mode, the first time values of the first system time clock with the audio and video PTS values; generating in response to the standard play mode, a playback and display of the audio and video data associated with respective audio and video PTS values in response to each of the respective audio and video PTS values being approximately equal to the first time values in the first system time clock; and incrementing a second system time clock with the CPU in response to the decoded data to provide second time values.