| 摘要 |
PURPOSE:To realize not only a picture transmission but a remote control of the transmission part via a 2-wire circuit, by coding and transmitting the picture transmission end signal during a transmission of the synchronous or address signal of a picture and giving a time-division control to the transmission of both the picture and the control signal based on the picture transmission end signal mentioned above. CONSTITUTION:When the transmission is over for a sheet of picture from the transmission side, the static picture transmitter 1 transmits the picture transmission end signal 3 after encoding it in a period during which the synchronous or address signal of the static picture output signal 2 is transmitted, and at the same time supplies the signal 3 to the circuit control circuit 4. Thus the circuit switch 6 is controlled by the circuit control signal 5, i.e., the output of the circuit 4, thus switching the circuit to the side of the receiver of control signal. Then the control reception signal 7 is detected by the detector 8, and the circuit is switched to the side of the transmission of static picture when the delivered detection output 9 is turned off and during reception of the carrier wave. On the other hand, at the reception side the circuit is switched in a short time to the control signal transmitter 24 from the static picture receiver 19 when the signal 3 is received. Then the control signal is sent to the transmission side via the transmission line 16. |
