发明授权
- 专利标题: Electronic alarm timepiece
- 专利标题(中): 电子闹钟
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申请号: US948633申请日: 1978-10-03
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公开(公告)号: US4280210A公开(公告)日: 1981-07-21
- 发明人: Yasuhiko Nishikubo , Mitsuo Sekine
- 申请人: Yasuhiko Nishikubo , Mitsuo Sekine
- 申请人地址: JPX Tokyo
- 专利权人: Citizen Watch Co., Ltd.
- 当前专利权人: Citizen Watch Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX52/133025[U] 19771003; JPX52/150010 19771214
- 主分类号: G04G13/02
- IPC分类号: G04G13/02 ; G04B23/02 ; G04C21/16
摘要:
An electronic alarm timepiece comprises a quartz crystal oscillator, a frequency divider, a display driving means, a display means, an alarm signal shaping means and an alarm means. The alarm signal shaping means is so arranged that a pair of output signals which are opposite in phase are produced with the aid of output signals of the frequency divider for actuating the alarm means, whereby it is possible to provide an alarm signal shaping means in the form of a complementary metal oxide semiconductor (CMOS) integrated circuit having sufficient power to actuate the alarm means without other amplifying circuits.
公开/授权文献
- US5334309A Filter units 公开/授权日:1994-08-02
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