| 摘要 |
In a method and apparatus for delaying propagation time of an external synchronizing signal transmitted from a receiver to transmitters which transmit a video signal to the receiver, each transmitter has an adjustable propagation delay timer which delays propagation of the external synchronizing signal. The receiver includes a detection circuit for detecting a time coincidence or a time difference between the external synchronizing signal and a sync portion of a video signal selected by a selector to be transmitted to the receiver, and a circuit which modifies the external synchronizing signal to produce a fluctuated external synchronizing signal when the detection circuit detects the time difference between the external synchronizing signal and the sync portion of the selected video signal.
|
