| 摘要 |
PURPOSE:To adjust a circulating delay time only with a slave station, by transmitting a special pattern from the slave station to a master station, comparing said pattern with a reference pattern at the master station, and transmitting the time shift information obtained from the result to the slave station. CONSTITUTION:A control circuit 201 controls a delay time adjusting circuit 107 with an output signal 15. A pattern generator 202 is driven with an output signal (frame information 7) of the circuit 107, the output is given to a modulation transmitter 110 from a switching device 109 and transmitted to a master station. The master station receives it at a reception demodulator 111 and inputs it to a pattern comparator 204. A reference pattern generator 203 for adjustment is operated at frame information 14, this output is inputted to the pattern comparator 204 for pattern comparison, the output is applied to a base band signal converter 205 for signal conversion and the output is applied to a base band signal converter 205 for signal conversion, and an output 19 is transmitted to a slave station through the transmission system of the master station. The slave station receives and demodulates the outputs, and output signal 5 is obtained and inverted at a signal inverter 206 and displayed on a display circuit 207. |
