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US 4,398,831 AGranted
Electronic watch
AssigneeEbauches S.A.
InventorsJean-Claude Fatton, Jean-Pierre Calame, Claude Mutrux
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AssigneeEbauches S.A.
InventorsJean-Claude Fatton, Jean-Pierre Calame, Claude Mutrux
Estimating the term…
The watch comprises an oscillator, a frequency divider, display means capable of displaying at least hours and minutes, and a correction circuit controlled by a rotary time setting stem which is capable of assuming at least two axial positions, one being a rest position which is occupied by the stem when the watch is functioning normally and an operative position for jointly correcting the minutes display and the hours display. The correction circuit is so arranged as to provide for correction of hours display alone in response to a particular rotary movement of the stem in its rest position. This particular rotary movement may comprise, in regard to the stem, rotating at least through a minimum angle in a time interval which is less than a predetermined period, for example at least two revolutions in less than two seconds. The minutes and hours displays are changed and the hours display is corrected in the forward direction or the backward direction depending on the direction of rotation of the stem.
An electronic watch comprising a time base for producing a standard frequency signal, a frequency divider circuit connected to the time base for producing a low-frequency time pulse signal, time information display means capable of indicating at least hours and minutes in response to said time pulse signal and a circuit for correcting the display, controlled by a rotary manual control member capable of occupying at least two axial positions, one being a rest position which is occupied by said manual control member when the watch is functioning normally and the other being an operative position serving jointly to correct the display of minutes and the display of hours, said correction circuit being arranged to perform a correction of the display of hours alone in response to a particular predetermined rotary movement of said manual control member in its rest position.
Dependencies are inferred from the claim text.