Sextant Avionique

Fr&eacute;d&eacute;ric De Lauzun

Laurent Georges

Fran&ccedil;ois Lopez

To obtain improved readability of a liquid crystal display screen under varied conditions of ambient luminosity, it is possible to increase the dynamic range of variation of the polarizing voltage. However, this leads to an increase in the electrical power consumption and to contrast reversal defects. To prevent this phenomenon, it is proposed not to modify the dynamic range of variation of polarizing voltage but to shift this range towards the lower voltages when the ambient luminosity increases or towards the higher voltages when the ambient luminosity diminishes. Thus, the white level is favored under high ambient luminosity and the black level is favored under low or normal luminosity.

Growing community of inventors

Saint Medard en Jalles, France

Frédéric De Lauzun

Growing community of inventors

Saint Medard en Jalles, France

Fr&eacute;d&eacute;ric De Lauzun

Frédéric De Lauzun