Display apparatus

Details Display apparatus Display apparatus

1987-11-02

1988-11-29

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340701, 340791, G09G 116

Patent

active

047885351

ABSTRACT:
A display apparatus having an inverting circuit which can be switched to invert white signals into black signals and black signals into white signals of image signal to reverse the contract of a black and white signal. This contrast can be switched independent of other color signals, or other color signals can be changed to complementary colors. The background color contrast can also be changed.

REFERENCES:
patent: 4028695 (1977-06-01), Saich
patent: 4467322 (1984-08-01), Bell et al.

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