Electronic timepiece with temperature compensation

Details Electronic timepiece with temperature compensation Electronic timepiece with temperature compensation

1982-07-01

1984-06-12

Roskoski, Bernard

Horology: time measuring systems or devices

Regulating means

For adjusting the frequency or beat

368202, G04B 1712

Patent

active

044538340

ABSTRACT:
An electronic timepiece having a quartz crystal oscillator circuit as a timebase signal source is provided with a temperature compensation system to compensate timebase signal frequency deviations with temperature, all components of the system being incorporated in the timepiece IC chip. The system is based on a temperature-sensitive voltage stabilizer circuit whose output voltage is current-converted to control the frequency of a temperature-insensitive oscillator circuit. Date generated on the basis of the latter oscillator frequency is applied to compensate the timebase signal frequency, by a capacitor switching technique.

REFERENCES:
patent: 4148184 (1979-04-01), Akahane et al.
patent: 4272840 (1981-06-01), Morozumi
patent: 4298971 (1981-11-01), Morokawa et al.
patent: 4321698 (1982-03-01), Gomi et al.

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