Digital color video monitor

Details Digital color video monitor Digital color video monitor

1987-07-30

1990-05-29

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340701, 340709, 340790, G09G 128

Patent

active

049299336

ABSTRACT:
A video monitor operable in either a 16 or 64 color mode includes a PROM having logic level color video inputs and logic level function inputs, including a mode select input, for accessing different memory locations at each of which binary data is stored for activating a plurality of logic level color video outputs. A plurality of analog R, G and B processing circuits are coupled to the PROM outputs, with their gains being controlled by the color video signals supplied from open collector connected outputs in the PROM. The gains are user adjustable by means of logic level driven analog circuits. The horizontal scan frequency differs in the two modes and a mode switched brightness compensation output is provided by the PROM.

REFERENCES:
patent: 4149184 (1979-04-01), Giddings et al.
patent: 4180805 (1979-12-01), Burson
patent: 4429306 (1984-01-01), Macauley et al.
patent: 4631691 (1986-12-01), Pica
patent: 4641282 (1987-02-01), Ounuma
patent: 4673930 (1987-06-01), Bujalski
patent: 4684935 (1987-08-01), Fujisaku et al.

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