Patent ID: 7339332
Filing Date: 2008-03-04
Classification: G02F,G09G

Abstract:
1. An electro-optical apparatus, comprising: a first group of LEDs configured to emit light of a first color, a second group of LEDs configured to emit light of a second color, and a third group of LEDs configured to emit light of a third color; one or more sensors optically coupled to the LEDs and configured to measure quantities S electronic circuitry coupled to the one or more sensors and the groups of LEDs for receiving S where D 1 , D 2 , and D 3 determine current drive levels for the first, second, and third group of LEDs respectively, L C is a commanded luminance signal determining overall luminance produced by the LEDs and K 1 , K 2 , and K 3 are chrominance parameters for determining the relative light output from the first, second, and third group of LEDs respectively.