Patent ID: 7396143

Claim:
A lighting system, comprising: a central controller for generating control signals; one or more lighting subsystems each of which accepts said control signals from said controller, each of said subsystems comprising; a plurality of lighting units, each of which comprises a plurality of light emitting diodes (LEDs) each being a different type emitting a different color of light, each of said lighting units comprising the same LED types emitting the same colors of light, said plurality of lighting units having at least first and second lighting units; and electronic circuitry comprising a plurality of switches, each of said LEDs in said first lighting unit connected between a drive voltage and a respective one of said switches, said switches also connected to a node, said node comprising a serial connection between said first and second lighting units, each of said LEDs in said second lighting unit connected to said node, said control signals closing the desired ones of said switches and applying the appropriate signal to said LEDs in said second of said lighting units to cause one or more corresponding type of said LEDs in said lighting units to emit light.