Keyboard-display combination

Details Keyboard-display combination Keyboard-display combination

1979-02-26

1981-06-16

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340365R, 340718, G06F 314

Patent

active

042740932

ABSTRACT:
A keyboard is constructed as an integral member of a display screen. The keyboard comprises a number of keys which are back-lighted upon the screen when they are enabled, but which are otherwise invisible to the viewer when disabled. When a key is depressed, the lit keyboard is reconfigured, a new set of keys enabled, and a system function is performed.

REFERENCES:
patent: 3158317 (1964-11-01), Alexander
patent: 3495232 (1970-02-01), Wagner
patent: 3757322 (1973-09-01), Barkan et al.
patent: 3971013 (1976-07-01), Challoner et al.
patent: 4032931 (1977-06-01), Haker

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