Horology: time measuring systems or devices – Regulating means – For adjusting the frequency or beat
Patent
1987-07-09
1988-08-09
Roskoski, Bernard
Horology: time measuring systems or devices
Regulating means
For adjusting the frequency or beat
368200, G04B 1712
Patent
active
047633093
ABSTRACT:
This programming arrangement for a non-volatile memory incorporated in the inner circuit of a timepiece for adjusting the frequency of the time base thereof includes a support provided with a connector to be plugged in in place of the energy cell. The rate of division of the frequency divider is adjusted by the introduction into the memory of a number k representative of the frequency difference between the time base frequency and a standard frequency. To effect this the arrangement comprises an electronic circuit external to the timepiece and which is coupled thereto by the connector. The electronic circuit introduces the number k into certain predetermined stages of the divider. When such number k is thus introduced the state of such stages is blocked by the inner circuit of the timepiece such state then being transferred into the non-volatile memory.
REFERENCES:
patent: 3895486 (1975-07-01), Hammer et al.
patent: 4051663 (1977-10-01), Chihara et al.
patent: 4074514 (1978-02-01), Vaucher
patent: 4147022 (1979-04-01), Ichikawa
patent: 4290130 (1981-09-01), Lowdenslager et al.
patent: 4372689 (1983-02-01), Remy
patent: 4475180 (1984-10-01), Sekiya et al.
EM Microelectronic-Marin SA
Roskoski Bernard
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