Patent ID: 6947017
Filing Date: 2005-09-20
Classification: G09G

Abstract:
1. A portable computer system comprising: a processor coupled to a bus; a light sensor coupled to said bus and for providing an ambient light information signal to said processor; a lighted display device coupled to said bus and for providing a visual display; a display controller coupled to said bus and for controlling said visual display; a data storage device coupled to said bus and comprising preconfigured dynamically adjustable brightness range setting data for implementing a plurality of different simultaneously stored ranges, wherein each stored range of said plurality of stored ranges comprises a brightness range maximum value and a brightness range minimum value; wherein said processor automatically selects a stored range of said plurality of stored ranges based on said ambient light information signal from said light sensor for use in dynamic brightness control; an adjustment display coupled to said bus and comprising a brightness bar with user adjustable slider and a plurality of selectable brightness levels for enabling the user to adjust a brightness setting within said selected range for said display device; and wherein a position of said user adjustable slider remains unchanged in response to an automatic change in brightness range between a first selected range and a second selected range and wherein further, said position of said slider in said first selected range corresponds to a different brightness value compared to a brightness value corresponding to said same position of said slider in said second selected range.