Electronic time piece automatic calibrating device

Details Electronic time piece automatic calibrating device Electronic time piece automatic calibrating device

1978-05-24

1980-05-20

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455 51, 368 47, H04B 116, G04C 1102

Patent

active

042041678

ABSTRACT:
An automatic timepiece calibrating device which utilizes the time signal given by any broadcasting station to provide calibration automatically once every 24 hours, a logic electronic timer device being adapted to switch on a receiver once in every 24 hours so that the receiver will generate an impulse immediately after receipt of a time signal from a broadcasting station. The time signal is passed by means of a tuning circuit and converted to impulses which are counted and, if the count corresponds to the signal the counter output impulse resets the internal state of electronic timepiece so that the time display is restarted from zero.

REFERENCES:
patent: 1869175 (1932-07-01), Sprague
patent: 2005158 (1935-06-01), Nicolson
patent: 3323025 (1967-05-01), Sugano et al.
patent: 3626687 (1971-12-01), Fondiller et al.
patent: 3748846 (1973-07-01), Kikuchi

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