| 摘要 |
<p>PURPOSE:To equalize the time of each station irrespective of the accuracy of an oscillator of each station by monitoring the time generated by a sub-station at a constant interval from a main station, adjusting the time of the sub-station by a time difference value between both the stations, and making the time of the sub- station equal to that of the main station. CONSTITUTION:In a network consisting of plural stations having time generating mechanisms 3, 13, respectively, the time generated by a timepiece mechanism 14 of a sub-station S is read through transmitting and receiving mechanisms 5, 15 and a communication circuit 10 at every prescribed time by a control mechanism 6 in a central processing unit 1 of a main station M. The time of this sub-station S and the time generated by a timepiece mechanism 4 of the main station M are compared by a time comparing mechanism 7. In case when a difference is generated between both the times, its time difference value is transmitted to the sub-station through the communication circuit 10, and the time of the sub-station S is adjusted by a time adjusting mechanism 17 so that it becomes equal to the time of the main station M.</p> |
