| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio video doorphone system with a simple configuration with low power consumption. SOLUTION: In the radio video doorphone system where information is transmitted between a camera slave set 10 and a monitor master set 11 through a radio channel, the camera slave set 10 is provided with a spread spectrum (SS) communication transmission section 1 that sends a video signal of an object by the SS communication method, a narrow band transmission section 7/narrow band reception section 2 that sends/receives a voice signal, and and minimizes the utility of the SS communication system to reduce the power consumption of the camera slave set 10. |
