Automatic initialisation method for at least the date display, a

Details Automatic initialisation method for at least the date display, a Automatic initialisation method for at least the date display, a

1990-10-30

1994-04-19

Miska, Vit W.

Horology: time measuring systems or devices

With calendar indicator

368 37, G04B 1924

Patent

active

053052897

ABSTRACT:
The device for implementing the method for the automatic initialisation of the date display of a perpetual calendar electronic watch comprising a face fitted with a window and a date disk permits, every time the watch stops, at the moment the electronic circuit is reconnected, the automatic identification of the date appearing in the window, by optically analysing a code attributed to this date and by memorizing this data by means of the electronic circuit. This optical device (10) comprises a source (11) emitting a beam of light (12), reflective surfaces (13) fixed onto the date disk (15) and a receiver (14). The beam (16) reflected by a surface (13) is intercepted by the receiver (14) which supplies a signal to the electronic circuit (17) which controls an electronic motor (18) driving the disk (15) by a system of reduction gears (19, 20).

REFERENCES:
patent: 4253173 (1981-02-01), Jaunin
patent: 4632569 (1986-12-01), Gogniat
patent: 4733384 (1988-03-01), Meister et al.

Affiliated with

Also associated with

Rating

Automatic initialisation method for at least the date display, a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic initialisation method for at least the date display, a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic initialisation method for at least the date display, a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-25746