Arrangement for automatically controlling brightness of cockpit

Details Arrangement for automatically controlling brightness of cockpit Arrangement for automatically controlling brightness of cockpit

1992-09-17

1993-12-14

Powell, Mark R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358168, 315 10, H04N 558, H04N 557

Patent

active

052708187

ABSTRACT:
An automatic brightness control provides automatic compensation for the effects of ambient light on a display. A microprocessor interfaced to ambient light sensors, pilot selected brightness controls and a harmonization gain potentiometer, implements a control program and outputs a raster gain signal. A video signal is multiplied with the raster gain signal therefore producing a cathode voltage that provides the automatic compensation.

REFERENCES:
patent: 4410841 (1983-10-01), Dusard et al.
patent: 4564856 (1986-01-01), Sanderson et al.
patent: 4707739 (1987-11-01), Endo et al.
patent: 5057744 (1991-10-01), Barbier et al.

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