| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a distributed time matching device which can reduce the load to be applied on a network and can assure the time synchronization accuracy as required. SOLUTION: A time notifying cycle management part 14 decides a transmitting cycle based on a maximum allowable error range set for a time error that is requested in a relevant distributed system which is managed by a maximum allowable error management part 12 and also on the maximum and minimum velocity ratios set between the speeds of clock devices of the slave stations 31 , 32 ...3n which are managed by a clock speed ratio management part 13 and the speed of a reference clock 11 of a master station. Based on the transmitting cycle decided at the part 14, a reference time transmitting part 15 transmits the value of the clock 11 as a reference time. Thus, the time errors occurring among the slave stations can be kept within a requested range with reduced load applied to a network 2.</p> |
