| 摘要 |
<p>An electronic timepiece, without system down at the time of transfer from the power saving mode to the display mode, is provided. The timepiece includes a power saving means, which stops power supply from a power source under a predetermined power saving condition; a hand driving means, which drives a hand indicating seconds, minutes and hours by receiving power from the power source; a calendar member, which indicates at least one of "year", "month" and "day"; a zero time detecting means, which detects transfer of the hand at zero o'clock (0:00) by the hand driving means, that indicates timing of advance of drive of the calendar member, and to output a zero time detection signal from this; a 24 hours timekeeping means, which is a 24-hours counter driven by a clock signal and adapted to electrically keep time and to output a 24 hours signal every 24 hours elapse; a reset means, which resets timekeeping of the 24 hours timekeeping means, when the first time zero time detection signal is output from the zero time detecting means, after a system resetting; and a calendar driving means, which drives the calendar member based on the 24-hours counter, when the first time zero time detection signal is output from the zero time detecting means, after system resetting, and drives the calendar member every time when the 24 hours signal is output from the 24 hours timekeeping means, after the first time zero time detection signal is output.</p> |
