Horology: time measuring systems or devices – Plural time zones
Patent
1979-12-03
1981-06-16
Miska, Vit W.
Horology: time measuring systems or devices
Plural time zones
368 74, G04B 1922, G04B 2302
Patent
active
042741513
ABSTRACT:
An electronic watch which normally displays home time and calendar data, on demand displays additional data and correct time and calendar data for every global time zone in response to actuation of external members. An alarm function is set by actuation of external members in either the home or global mode. When the alarm is set in the home mode, the alarm sounds at the same display-indicated time regardless of the time zone of operation. When the alarm is set in the global mode, the alarm sounds at the selected hour in a particular time zone regardless of the time in the actual zone of operation. The display returns to the home time display mode if the external members are continuously actuated for a time in excess of a predetermined period. Data derived from a signal generator and divider network is inputted to counters accumulating timekeeping and calendar data. An alarm-setting counter holds alarm data selected by the user. Changing time zones for display by actuation of external members adds or subtracts incremental counts to the counters.
REFERENCES:
patent: 3955355 (1976-05-01), Luce
patent: 4180969 (1980-01-01), Naito
patent: 4183203 (1980-01-01), Maezawa et al.
Kabushiki Kaisha Suwa Seikosha
Miska Vit W.
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