发明名称 Hand-indication type electronic timepiece
摘要 A hand-indication type electronic timepiece is disclosed which has a vibrator such as a quartz crystal vibrator, an electronic circuit including an oscillator, a frequency divider, a driver, and a motor for operating hands, and other components, said electronic circuit comprising a plurality of pulse control circuits for different functions such as a pulse generator for normal hand operation, a fast feed pulse forming circuit, a pulse output stop circuit, and a circuit for producing output pulses for said normal hand operation after some specific periods of time with external control signals applied thereto as input signals, said pulse control circuits being selectively operated by external operating means, so that said motor for operating hands may be controlled by multiple steps by said external operating means.
申请公布号 US4207732(A) 申请公布日期 1980.06.17
申请号 US19780940382 申请日期 1978.09.07
申请人 RICOH WATCH CO LTD 发明人 SAWADA, SHINJI;TAKAHASHI, SHIGEKAZU
分类号 G04C3/14;G04C9/00;(IPC1-7):G04C3/00;G04B27/00 主分类号 G04C3/14
代理机构 代理人
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