| 摘要 |
Jitter of a Program Clock Reference (PCR) in a transport stream of an Moving Picture Experts Group (MPEG) signal transmitted over Asynchronous Transfer Mode (ATM) system is reduced by correcting PCR to PCR-(T-delta) if |PCR-STC|>T-delta-DELTA is true and (PCR-STC)>0, correcting PCR to PCR+(T-delta) if |PCR-STC|>T-delta-DELTA is true and (PCR-STC)<0, and making no correction if -PCR-STC->T-delta-DELTA is false. The program clock reference received is represented by PCR, a system time clock at the time when the program clock reference is received is represented by STC, a period of a transport stream packet at an output terminal of an MPEG encoder is represented by T, a packet transmission time of the transport stream packet at an input terminal of the apparatus is represented by delta, and a tolerable range is represented by DELTA.
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