| 摘要 |
<p>PURPOSE:To secure the autonomous performance to each element in terms of the time by selecting the system time out of the time information on all communication stations by majority and correcting the time of its own station to the system time when the deviation exceeds the set value at each communication station. CONSTITUTION:Each communication station produces the time of its own and at the same time transmits successively the information on the produced time to other communication stations 12 and 14. Then the system time serving as the reference time of a system is selected out of the time information on all stations 10, 12 and 14 by majority. Each of these stations 10 - 14 compares its own time with the system time. Then the time of its own station 10 is corrected to the system time when the deviation the time of the station 10 and the system time exceeds the set value. The station 10 produces a new time based on the corrected time. Thus it is possible to autonomously detect the time abnormality for each element and also to correct the time.</p> |
