| 摘要 |
PURPOSE:To quickly detect the conditional change of terminal station at the base station, by decreasing the data collection time for each terminal station, when the terminal stations and the number of terminal stations objective to dispatching command are different in every occasion. CONSTITUTION:The demodulated output received at the antenna 1 and the radio set 2 is fed to the signal selection circuit 3. The circuit 3 can receive the dispatching signal FA and the response request signal FR in common with all the terminal stations and selectively recives only the signal assigned to the station itself of the terminal station discrimination signals F1 to Fn. When it receives the signal FA, the timing generation circuit 4 is started when the signal is OFF and also, it releases the reset of the counters 5 to 10 to advance the count. The circuit 4 is in synchronizing with the interruption of the signal FA and feeds the clock pulse to the counters 5 to 10 with the same period as the length of the signal in one station unit of the signals F1 to Fn from the base station. The counter 5 counts the number of called stations and latches the value and the counter 10 counts order of call for the station itself and latches the valve. |
