Patent ID: 7057359

Claim:
A display system comprising: a display panel having at least one illumination source; and a programmable current controller coupled to the at least one illumination source, wherein the programmable current controller is configured to regulate an operating driving current of the at least one illumination source according to a digital reference programmable by a user and corresponding to a predetermined reference driving current, the programmable current controller comprising: a programmable interface configured to program the digital reference in a memory; a digital-to-analog converter coupled to the programmable interface and configured to convert the digital reference into a first electrical parameter; a comparator coupled to the programmable interface and configured to compare the first electrical parameter with a second electrical parameter corresponding to the operating driving current of the at least one illumination source, and generate a driving bias current; and a current regulator coupled to the comparator and configured to regulate the operating driving current of the at least one illumination source according to the driving bias current, wherein the driving bias current corresponds to a difference between the first and second electrical parameters.