Patent ID: 6337675
Filing Date: 2002-01-08
Classification: B60Q

Abstract:
A display system comprising:a display for displaying information at a luminance; an ambient light sensor for generating a signal indicating ambient illuminance; and a display controller for receiving said signal from said ambient light sensor, wherein each luminance at which said display displays the information is representable on a graph as a function of a corresponding illuminance and said display controller automatically varies said luminance of said display between a maximum luminance and a minimum luminance based upon said signal from said light sensor in accordance with the graph, wherein said display controller includes a first user input device for manually adjusting a first point on the graph for an illuminance at which said display displays at its maximum luminance without changing the corresponding luminance on the graph and a second user input device for manually selectively varying a second point on the graph for a luminance to be said minimum luminance when said signal indicates a minimum illuminance, wherein said second user input device varies the second point without changing the corresponding illuminance on the graph.