| 摘要 |
<p>PURPOSE:To control repeating operations by reproducing a clock from the electric field intensity of a received signal and the signal and utilizng an output obtained by detecting the synchronous condition between the reproduced clock and an output clock obtained by inputting the reproduced clock into a phase synchronizing circuit. CONSTITUTION:A received signal received by means of an antenna 1 is inputted into a receiver 2 and its clock is reproduced by the receiver 2, and then, the reproduced clock is inputted into a phase synchronizing circuit 5. An output clock obtained from the phase synchronizing circuit 5 is inputted into an out-of- synchronism detecting circuit 6 and it is detected whether the output clock is under a synchronized condition or not. On the other hand, the electric field to the receiver 2 is inputted into an electric field intensity detecting circuit 4 and its intensity is detected. These detected outputs are inputted into an AND circuit 7 and a transmitter 3 is controlled by the output of the AND circuit 7.</p> |
