| 摘要 |
A timing detection device employed in a video decoder comprising a counter for counting the number of frames of coded picture data stored in a frame memory area of a RAM; a register where the count value of the counter is loaded in accordance with the timing when a PTS (presentation time stamp) is supplied from a demultiplexer to a host processor, and the loaded count value is decremented upon completion of each analysis performed per frame of the coded picture data read out from the storage area; and a frame counter for outputting a timing detection signal from a "0" detector when the count value of the register is reset to zero. In detection of the timing to process the frame data corresponding to the PTS used as reproduction output time management information for video and audio synchronism control, it becomes possible to achieve proper interchangeability and reduction of the cost.
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