Self-correcting watch

Details Self-correcting watch Self-correcting watch

1997-12-03

2000-11-14

Roskoski, Bernard

Horology: time measuring systems or devices

Regulating means

For compensation

368187, G04B 1720

Patent

active

061460117

ABSTRACT:
To provide a self-correcting watch wherein a high precision self-correction of the watch circuit can be realized without any troublesome operation, a self-correcting watch of the invention having a zero second set button comprises: a time interval counter circuit for counting a time interval from a first pressing of the zero second set button for time setting until each following pressing of the zero second set button for manually correcting time indication; a correction value memory for storing correction information including the time interval and an accumulation of correction values of the time indication performed both manually and automatically from the first pressing of the zero second set button; and a correction value calculator circuit for calculating an absolute time interval at which the time indication is to be corrected automatically by one second, from the time interval of a concerning pressing of the zero second set button counted by the time interval counter, a correction value of the time indication manually corrected by the concerning pressing of the zero second set button and the correction information stored in the correction value memory at a previous pressing of the zero second set button.

REFERENCES:
patent: 4068463 (1978-01-01), Maeda et al.
patent: 4730286 (1988-03-01), Aizawa et al.
patent: 5717661 (1998-02-01), Poulson

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