Horology: time measuring systems or devices – Regulating means – For adjusting the frequency or beat
Patent
1981-02-03
1985-03-05
Miska, Vit W.
Horology: time measuring systems or devices
Regulating means
For adjusting the frequency or beat
368202, G04B 1712, G04B 1720
Patent
active
045027900
ABSTRACT:
Time sharing of a processor in a timepiece allows for performance without interference of a plurality of functions including timekeeping and supplemental functions. An electronic timepiece includes an oscillator for producing a time-standard high frequency signal, temperature detecting means, the processing unit, a display means and at least one dedicated memory for compensating for the effect of temperature on the frequency of the oscillator. In addition, memories are provided for compensating for the aging characteristics of the oscillator and the temperature-detecting means. Manually-actuatable input switches provide for carrying out changes in the temperature-compensating data as the oscillator and the temperature-detecting means age. These switches also make it possible to use the circuitry for calculation. Preferably, the frequency generated by the oscillator is an integer multiple of 10 Hz and dividers are provided for dividing the frequency down to 0.1 Hz which serves as the basic frequency for operation of said timepiece for displaying time, a perpetual calendar, a calculator and as an alarm.
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patent: 4015208 (1977-03-01), Hammer et al.
patent: 4063409 (1977-12-01), Bayliss
patent: 4093992 (1978-06-01), Kawamura et al.
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patent: 4217653 (1980-08-01), Nakata
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patent: 4272840 (1981-06-01), Morozumi et al.
patent: 4330840 (1982-05-01), Kobayashi
Kabushiki Kaisha Suwa Seikosha
Miska Vit W.
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