| 摘要 |
<p>PURPOSE:To eliminate the inverse of time to time after a second order and to set a time lag to be a minimum by means of an interruption processing judging whether time data of an internal clock is delayed or advanced compared to time data of a master clock device at the time of input for a proofreading pulse signal for time synchronization. CONSTITUTION:The proofreading pulse signal inputted from the proofreading pulse output part for time synchronization 17 of the master clock device 11 is processed as the interruption input signal of a microprocessor part 15 in a monitor controller 13. Every correct time which can previously set is decided for the proofreading pulse signal for time synchronization 17. When the microprocessor part 15 recognizes time passed from n-minutes t1-seconds by prescribed time, for example, it shifts to a step reading time data from the time data output part 12 of the master clock device 11 through a time data input part 14. Then, a time synchronization preprocessing such as the generation of time data for proofreading the self internal clock 6 is executed until a next interruption signal is inputted. Then, the next interruption input signal is received in such a state.</p> |
