Two-wire electronic module for remote digital clocks

Details Two-wire electronic module for remote digital clocks Two-wire electronic module for remote digital clocks

1994-03-07

1995-06-13

Miska, Vit W.

Horology: time measuring systems or devices

Plural timepiece system or system device

368 66, 368204, G04C 1100, G04B 900, G04B 100

Patent

active

054250048

ABSTRACT:
An electronic system is used with one or more digital clocks. The electronic system comprises a two-wire module, attached to the digital clock, for allowing each digital clock to be run and reset to the correct time. A master clock controls a DC supply voltage applied to the two-wire module. The DC supply voltage keeps the digital clock in synchronization with the master clock. Interrupting the DC supply voltage and subsequently reapplying the DC supply voltage causes the two-wire module to set the digital clock to a predetermined time. Reversing polarity of the DC supply voltage for a calibrated time period electronically activates the two-wire module to reset the digital clock to the correct time.

REFERENCES:
patent: 3608301 (1971-09-01), Loewengart
patent: 3643420 (1972-02-01), Haydon
patent: 3668860 (1972-06-01), Diersbock
patent: 3690059 (1972-09-01), Haydon
patent: 3811265 (1974-05-01), Cater
patent: 4404624 (1983-09-01), Yamazaki
patent: 4430008 (1984-02-01), Nishikubo
patent: 4490050 (1984-12-01), Singhi
patent: 4616167 (1986-10-01), Adler

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