Radio synchronized clock

Details Radio synchronized clock Radio synchronized clock

1984-07-03

1986-02-11

Roskoski, Bernard

Horology: time measuring systems or devices

Plural timepiece system or system device

With wireless synchronization

G04C 1102

Patent

active

045695989

ABSTRACT:
A quartz oscillator-driven time-measuring circuit normally and substantially continuously updates the time display of a clock. A control circuit independent of the time-measuring circuit receives the standard time interval pulse signal broadcast by WWV/WWVH which includes longer pulses signaling each minute and shorter pulses signaling the seconds between minutes. The control circuit includes mechanism activated by the longer minute pulses to set the clock display intermittently, i.e. once each minute. Between minutes, the time-measuring circuit updates the clock display.

REFERENCES:
patent: 4117661 (1978-10-01), Bryant, Jr.
patent: 4204167 (1980-05-01), Liu
patent: 4234958 (1980-11-01), Pipes et al.

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