Analog-display electronic timepiece comprising a divider with an

Details Analog-display electronic timepiece comprising a divider with an Analog-display electronic timepiece comprising a divider with an

1981-07-15

1983-05-10

Miska, Vit W.

Horology: time measuring systems or devices

Electrical time base

Solid state oscillating circuit type

368201, G04F 500, G04B 1712

Patent

active

043826920

ABSTRACT:
An electronic watch comprising a stepping motor for driving a mechanism for displaying the time information, a quartz oscillator, a frequency divider with an adjustable division factor, a circuit for adjusting the division factor, a memory containing data relating to the magnitude of said adjustment and a logic circuit which, in response to an interrogation signal, produces a measuring signal which is supplied to the coil of the stepping motor and which comprises pulses whose distribution is representative of the division factor and the frequency of the oscillator and whose duration is sufficiently short so as not to cause the motor to turn and sufficiently long to cause a magnetic stray field of the coil of the motor which can be detected by an external apparatus for measuring the rate of the watch.

REFERENCES:
patent: 3998044 (1976-12-01), Yamauchi et al.
patent: 4142360 (1979-03-01), Akahane
patent: 4154053 (1979-05-01), Chetelat et al.
patent: 4282594 (1981-08-01), Ichikana

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