Patent ID: 7327337

Claim:
A color tunable illumination device, comprising: a substrate including a first light emitting diode (LED), a second LED, and a third LED, each of the first, second, and third LEDs emitting light at a different wavelength than either of the other LEDs; and an integrated circuit LED driver being electrically responsive to a data signal, a clock signal, and a power signal for driving the first, second, and third LEDs, wherein the integrated circuit LED driver is connectable to a bus comprising at least two conductors configured to carry the data signal and the clock signal, the integrated circuit LED driver comprising: a plurality of pulse width modulation registers selectable in combination to drive the first LED, second LED, and third LED independent of one another to a blink rate and an intensity to control the color produced by the combination of the LEDs; and an electronically programmed address circuit for storing an address therein, the integrated circuit LED driver being responsive to the data signal upon receiving a corresponding address in the data signal; and an optical diffuser enclosing at least a portion of the first, second, and third LEDs.