Time marking chronometer

Details Time marking chronometer Time marking chronometer

1975-04-30

1977-03-08

Jackmon, E. S.

58 50R, G04F 1004, G04B 1900

Patent

active

040106039

ABSTRACT:
A fully electronic chronometer using a quartz crystal as a frequency standard and displaying mean time by the use of electronically operated digital read-outs. The circuit permits the display of the instant of time at which a switch is operated, while mean time continues to be counted by the circuitry. Other features include conservation of power by display of mean time only upon demand and the provision for control and display remote from the timing circuitry.

REFERENCES:
patent: 3715881 (1973-02-01), Girard
patent: 3765163 (1973-10-01), Levine
patent: 3854277 (1974-12-01), Samejima
patent: 3962861 (1976-06-01), Protta

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