Patent ID: 8742695

Claim:
A method of operating a Light-Emitting Diode (LED) light, comprising: supplying a current to a light source, the light source having first and second groups of light-emitting diodes (LEDs) and each group having at least one LED; a controller receiving a timing signal having a period; supplying a color control signal to the controller, the color control signal having a first signal level; in response to the color control signal at the first signal level, the controller alternately pulsing the first and second groups of LEDs during the period, such that the first group of LEDs has a first duty cycle and the second group of LEDs has a second duty cycle during the period; modifying the color control signal such that the color control signal has a second signal level different than the first signal level; in response to modifying the color control signal, the controller alternately pulsing the first and second groups of LEDs during the period, such that the first group of LEDs has a third duty cycle different than the first duty cycle and the second group of LEDs has a fourth duty cycle different than the second duty cycle during the period; the first and second duty cycles being a function of the color control signal at the first signal level, and the third and fourth duty cycles being a function of the color control signal at the second signal level; and a change in the duty cycle of the first group of LEDs from the first duty cycle to the third duty cycle being inverse to a change in the duty cycle of the second group of LEDs from the second duty cycle to the fourth duty cycle.