| 摘要 |
PURPOSE:To save power consumption by turning on a power of a serial control circuit so as to bring the circuit in the operationable state only when a signal is inputted to the serial control circuit. CONSTITUTION:A remote control unit 1 consists of a peripheral 2, a mircoprocessor 3 and an interface 4 and plural signals are transmitted as a serial data. A noise detector 10 eliminates the noise of a signal transmitted from the remote control unit 1 and applies its output to a detection circuit 11 and the serial control unit 13. A power supply on/off circuit 12 is constituted to be turned on by an output of the detection circuit 11. Thus, the remote control unit 1 is connected to a camera 9 of the serial control circuit 13 and a desired signal is inputted from the control unit 1 to the control circuit 13, the circuit 13 is operated in such case only. |
