| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radio communication system capable of preventing interference that is caused, when a plurality of mobile radio stations almost simultaneously perform transmission, even if unique numbers are not given to the mobile radio stations. <P>SOLUTION: When a CPU 210 of a mobile radio station 2 detects that a transmission button (not shown) is depressed, the CPU 210 uses a DTMF (dual tone multi-frequency) generation circuit 206 to generate a DTMF signal showing a transmission request and uses a transmission circuit 208 to transmit the DTMF signal; and when a DTMF conversion circuit 205 detects a DTMF signal, showing transmission inhibition during after lapse of preset time t1 until the lapse of a preset time t2, transmission is performed, and when the DTMF signal showing transmission inhibition is detected during the other time durations, and transmission is not performed. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
