Horology: time measuring systems or devices – Chronological – With mechanical or electromechanical driven display
Reexamination Certificate
2007-05-15
2007-05-15
Miska, Vit (Department: 2833)
Horology: time measuring systems or devices
Chronological
With mechanical or electromechanical driven display
C368S076000, C368S047000
Reexamination Certificate
active
11151303
ABSTRACT:
The method of synchronizing the analogue display (41) of a timepiece (40), including an electronic time base (64), is achieved using proximity sensors (60, 62) respectively associated with wheels (46, 48) each having an aperture (54, 56) for defining the angular position of the latter. Determination of the angular position of a wheel requires an angular distance of around 60° to 90° to be travelled with this type of proximity sensor. Dependency of the measurement results upon the temperature generates a problem of precision in determining the angular position of the wheels, in particular a wheel secured to the hour indicator, given that an angle of 60° to 90° corresponds to a time interval of 2 to 3 hours. In order to ensure a measurement in a relatively short time interval where the ambient temperature is substantially constant and thus has no influence on the measurement, the invention provides that, in a analogue display synchronization mode at least one indicator is driven in an accelerated advance mode so that the aperture provided in the corresponding wheel quickly passes opposite the proximity sensor associated with that wheel.
REFERENCES:
patent: 3815351 (1974-06-01), Vovelle
patent: 5245591 (1993-09-01), Katou
patent: 5270993 (1993-12-01), Besson et al.
patent: 5898644 (1999-04-01), Ganter et al.
patent: 6038523 (2000-03-01), Akahane et al.
patent: 6330207 (2001-12-01), Born et al.
patent: 6454458 (2002-09-01), Born et al.
patent: 34 19 499 (1985-11-01), None
patent: 38 28 810 (1990-03-01), None
patent: 746 100 (1996-12-01), None
patent: 841 538 (1998-05-01), None
patent: 952 426 (1999-10-01), None
patent: 969 266 (2000-01-01), None
patent: 1 256 855 (2002-11-01), None
patent: 1 422 581 (2004-05-01), None
patent: 2 379 106 (1978-08-01), None
Bernasconi Ermanno
Buehler Roger
Dinger Rudolf
Farine Pierre-Andre
Asulab S.A.
Miska Vit
Phan Thanh S.
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