HIGHWAY RADIO TRANSMITTER, AND CENTRAL APPARATUS FOR TRANSMITTING INFORMATION TO THE HIGHWAY RADIO TRANSMITTER

摘要

PROBLEM TO BE SOLVED: To provide highway radio transmitters installed at multi-points capable of transmitting voice information (modulation signals) synchronously with each other.;SOLUTION: The highway radio transmitter 100 receives voice data via a bus type network 101, a voice reproduction circuit 108 converts data into voice, and a radio wave transmission section 109 transmits a radio wave on which the voice is superimposed. A frequency read circuit 106 of each transmitter acquires a synchronizing signal from a waveform of a commercial power supply 110 according to a prescribed rule. In the case of reproducing a voice signal from the bus type network 101, each transmitter arranges cueing timings of the voice by using the synchronizing signal. Thus, the timing of the voice signal superimposed on the radio waves sent from the transmitters 100, 200 is arranged and even when a listener receives the plurality of radio waves in a congestion state, since the listener hears the radio waves as one voice signal, inaudibility can be reduced.;COPYRIGHT: (C)2003,JPO