Color video display apparatus for vehicles
First Claim
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1. A color video display apparatus for a vehicle comprising:
- video signal generator means for generating at least blue and red video signals for providing a color display;
amplifying means for amplifying said video signals from said video signal generator means, said amplifying means including gain adjusting means for varying an amplification factor of at least one of said video signals;
display means for producing said color display with said video signals amplified by said amplifying means;
light/dark detecting means for detecting one of a light and dark condition outside of said vehicle; and
control means, responsive to said detecting means detecting that the outside of said vehicle is dark, for controlling the operation of said gain adjusting means such that the amplification factor of said red video signal is increased relative to that of said blue video signal in said amplifying means to maintain stable color tones in said color display.
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Abstract
A color video display apparatus for vehicles detects a light or dark condition outside a vehicle to perform a variable gain control on a circuit for amplifying blue, green and red video signals. In response to the dark condition outside the vehicle, the amplification factor of the red video signal is increased relative to those of the blue and green video signals.
38 Citations
7 Claims
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1. A color video display apparatus for a vehicle comprising:
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video signal generator means for generating at least blue and red video signals for providing a color display; amplifying means for amplifying said video signals from said video signal generator means, said amplifying means including gain adjusting means for varying an amplification factor of at least one of said video signals; display means for producing said color display with said video signals amplified by said amplifying means; light/dark detecting means for detecting one of a light and dark condition outside of said vehicle; and control means, responsive to said detecting means detecting that the outside of said vehicle is dark, for controlling the operation of said gain adjusting means such that the amplification factor of said red video signal is increased relative to that of said blue video signal in said amplifying means to maintain stable color tones in said color display. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification