Electronic display dimming circuit

Details Electronic display dimming circuit Electronic display dimming circuit

1983-05-27

1985-05-07

Dixon, Harold

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Load device irradiating the radiant energy responsive device

315152, 315155, 315209R, 315307, 315DIG4, H05B 3702

Patent

active

045160554

ABSTRACT:
A display dimming circuit is disclosed which provides a coordinated automatic display brightness level adjustment for a plurality of instruments associated within the same general region. Its use in an aircraft cockpit, for example, allows the left, or captain's instruments, to be coordinated to be responsive to the ambient light in that region of the cockpit and the co-pilot's bank of instruments, or right region, of the aircraft is separately coordinated such that both regions exhibit appropriate brightness levels on all instruments. In this manner, gas discharge displays, for example, are installed adjacent cathode ray tube displays or vacuum fluorescent displays and all are effectively maintained at an appropriate lighting level.

REFERENCES:
patent: 2233879 (1941-03-01), Tolman
patent: 3577039 (1971-05-01), Sanford
patent: 3883778 (1975-05-01), Kaji et al.
patent: 3965388 (1976-06-01), Brisk
patent: 3977792 (1976-08-01), Jumonji et al.
patent: 4234820 (1980-11-01), Widmayer

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