| 摘要 |
<p>PROBLEM TO BE SOLVED: To extend a transmission distance by arranging a repeater having a memory between the side of transmission and the side of reception, and transmitting a received signal at the next time after storing it for a fixed time. SOLUTION: Image signals and audio signals provided by monitor cameras 1-1 to 1-n5 are sent out of transmitters TX-1 to TX-n of 2.4 GHz band spectrum spreading system, received by a receiver RX, demodulated to image signals and monitored by a monitor. In this case, repeaters RP-1 to RP-n are installed while being combined with the transmitter TX-1, and peculiar ID numbers are set. Then, these repeaters are operated to connect a line when an ID signal in a control signal from the receiver RX is coincident. Therefore, the repeaters RP-1 to RP-n are turned from continuous reception standby state to active state for repeating reception and transmission.</p> |
