Generation of a light intensity control signal

Details Generation of a light intensity control signal Generation of a light intensity control signal

1981-04-13

1983-07-12

Masinick, Michael A.

Communications: electrical

Land vehicle alarms or indicators

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

340812, 340813, G06F 314

Patent

active

043933785

ABSTRACT:
A system for the generation of a light intensity control signal for a video amplifier of a data display device is disclosed which is connected with a video signal line and a pulse generator. When displaying characters composed of horizontal lines and vertical rows of points on a screen, the lines display a higher brightness than the points. The disclosed system derives from the video signal an analog light intensity control signal for the video amplifier with which the light intensity of the points is readjusted. The system includes a detector device connected with a video signal line, the detector device identifying the signal sequence associated to a point, a line or, a blank and a converter which derives a light intensity control signal therefrom.

REFERENCES:
patent: 3725901 (1973-04-01), Lehari
patent: 3883778 (1975-05-01), Kaji
patent: 3986186 (1976-10-01), Cochran
patent: 4228433 (1980-10-01), Matsumoto
patent: 4314245 (1982-02-01), Wilbur, Jr.

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