发明授权
- 专利标题： Electronic watch
- 专利标题（中）： 电子手表
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申请号： US169312申请日： 1980-07-16
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公开(公告)号： US4382691A公开(公告)日： 1983-05-10
- 发明人: Masaharu Shida , Akira Torisawa , Jun Ueda , Masaaki Mandai , Katsuhiko Sato
- 申请人： Masaharu Shida , Akira Torisawa , Jun Ueda , Masaaki Mandai , Katsuhiko Sato
- 申请人地址： JPX
- 专利权人： Kabushiki Kaisha Daini Seikosha
- 当前专利权人： Kabushiki Kaisha Daini Seikosha
- 当前专利权人地址： JPX
- 优先权： JPX52-28977 19770316
- 主分类号： G04C3/00
- IPC分类号： G04C3/00 ; G04C3/14 ; H02P8/02 ; G06F1/04
摘要：
In an analog electronic watch having a calendar display the power required during change of the calendar display, about 6 hours out of 24, is greater than at other times. In order to effect economy in power consumption, the pulse for driving the watch motor during the time other than the period in which the calendar display is being changed is only sufficient to drive the time indicating means. In case the motor fails to step when such pulse is applied, this is detected by a detecting circuit and a corrective drive pulse is applied to the motor so as to drive it.
公开/授权文献
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