Patent ID: 6510279
Filing Date: 2003-01-21
Classification: H04N

Abstract:
An audio/video synchronous reproducer for carrying out audio reproduction and video display synchronously in response to audio data and video data, said audio/video synchronous reproducer comprising:video processing means for processing said video data to produce a video display control signal and a video time stamp; video display means connected to said video processing means for performing said video display in accordance with said video display control signal; audio processing means for processing said audio data to produce an audio reproduction control signal and a processed audio data amount; audio reproducing means connected to said audio processing means for performing said audio reproduction in accordance with said audio reproduction control signal; video time stamp detecting means connected to said video processing means for detecting said video time stamp; audio time stamp deriving means connected to said audio processing means for deriving an audio time stamp equivalent value based on said processed audio data amount and not based on an actual audio time stamp; time stamp comparing means connected to said video time stamp detecting means and said audio time stamp deriving means for comparing said video time stamp with said audio time stamp equivalent value to produce a comparison result signal indicative of a delayed/advanced relationship between said video data and said audio data; and video control means connected to said video processing means and said timestamp comparing means for controlling an operation of said video processing means in response to said comparison result signal.