Electronic watch

Details Electronic watch Electronic watch

1996-06-28

1999-09-28

Miska, Vit

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

368110, G04B 1904, G04F 800

Patent

active

059599413

ABSTRACT:
An electronic watch with a chronograph function comprises a motor, a current time counter, a hand position counter, a coincidence detector and a backward/forward movement determining unit. When a chronograph mode is selected, a second hand moves backward or forward to a 12-o'clock (zero) position depending upon its position in a time measurement and indication mode. The electronic watch reliably resumes the time measurement and indication after it functions as a chronograph.

REFERENCES:
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patent: 4387437 (1983-06-01), Lowrey et al.
patent: 4398832 (1983-08-01), Maire et al.
patent: 4419019 (1983-12-01), Nishimura et al.
patent: 4459031 (1984-07-01), Perucchi
patent: 4470707 (1984-09-01), Chambon et al.
patent: 4493559 (1985-01-01), Ishida et al.
patent: 4545686 (1985-10-01), Ushikoshi
patent: 4657405 (1987-04-01), Nakazawa
patent: 5151885 (1992-09-01), Kasuo
patent: 5166912 (1992-11-01), Kanesaka

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