| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize a high accuracy timepiece device with a low-cost crystal oscillator in this time correcting method although the high accuracy timepiece device with an error of several microseconds or less requires a high-cost source oscillator. SOLUTION: Time is not directly corrected by a received time correction signal, but a time relative error between the time correction signal and the timepiece device is computed, and the fine adjustment of the frequency of a source oscillator is gradually made with a relative error obtained by average operation including past relative errors.</p> |
