Radio wave-corrected timepiece

Details Radio wave-corrected timepiece Radio wave-corrected timepiece

1994-11-30

1997-04-15

Miska, Vit W.

Horology: time measuring systems or devices

Plural timepiece system or system device

With wireless synchronization

G04C 1102

Patent

active

056217030

ABSTRACT:
A radio wave-corrected timepiece permitting one to easily determine whether radio waves containing correct time data or radio waves containing abnormal time data are being received includes a receiver for receiving a broadcast time signal containing encoded time data and producing a rectangular pulse train containing encoded time data, a memory for storing pulse widths of the encoded data, a comparison circuit for comparing the output signal of the receiver with the output of the memory, and a processor for receiving the output of the comparison circuit, calculating the time, and providing an output permitting correction of a measured time.

REFERENCES:
patent: 4117661 (1978-10-01), Bryant, Jr.
patent: 4204398 (1980-05-01), Lemelson
patent: 4582434 (1986-04-01), Plangger et al.
patent: 4823328 (1989-04-01), Conklin et al.
patent: 5461663 (1995-10-01), Motegi

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