| 摘要 |
PROBLEM TO BE SOLVED: To reduce delay to be inserted and to reduce a delay insertion circuit scale by adjusting the response delay time adjusting value of a slave station, which is viewed from a master station, to the nearest reference point. SOLUTION: The distance measuring signal 103 of the output of a distance measuring signal output circuit 102 in the master station 101 is outputted to slave stations 121, 131 and 141. The respective stations receive it, return response signals 122, 132 and 142 to a distance measuring circuit 104, measure response time and learns distances between the master station and the slave stations from the response time. The circuit 104 selects reference response time which is the nearest to the measuring value and whose distance is the farthest among plural reference response time which are previously decided in accordance with the respective slave stations, obtains a difference with the response time of real reception and transmits it to a distance correction circuit 106 as correction information 105. The circuit 106 generates correction information with information and transmits it to the respective slave stations. The respective slave stations control timing circuits 123, 133 and 143 and output delay circuits 124, 134 and 144 based on information, change slave station output timing and control output signals so that a reference phase is obtained when the master station 101 receives it. |
