Horology: time measuring systems or devices – Chronological – With simultaneous time indicating means
Patent
1978-10-03
1981-07-21
Miska, Vit W.
Horology: time measuring systems or devices
Chronological
With simultaneous time indicating means
368251, G04B 2302, G04C 2116
Patent
active
042802105
ABSTRACT:
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.
REFERENCES:
patent: 3759029 (1973-09-01), Komaki
patent: 4001553 (1977-01-01), Troutman et al.
patent: 4068461 (1978-01-01), Fassett et al.
patent: 4104863 (1978-08-01), Kondo
Nishikubo Yasuhiko
Sekine Mitsuo
Citizen Watch Co. Ltd.
Miska Vit W.
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