| 摘要 |
<p>PURPOSE:To surely match the clock time of respective processors in a distributed system. CONSTITUTION:This device is provided with a common memory 6 equipped with flag areas 40, 41 and 42 showing that general processors are in correcting time and an area 32 to write the representative processor time of a representative processor 1, and correcting means 21, 23 and 25 of general processors 3, 4 and 5 judge errors. When the error exceeds a fixed value, a flag is set to the common memory 6 and its own time is corrected. When the time is completely corrected, the flag is changed into any state not in time correcting and when all the general processors 3, 4 and 5 are not in time correcting, the representative processor time in the common memory 6 is updated while correcting a CPU clock 10 at the representative processor 1.</p> |
