US Patent No. 10,143,050

LED DRIVER, LIGHTING SYSTEM USING THE DRIVER AND DRIVING METHOD


Patent No. 10,143,050
Issue Date November 27, 2018
Title Led Driver, Lighting System Using The Driver And Driving Method
Inventorship Eric Johannus Hendricus Cornelis Maria Nieuwlands, Eindhoven (NL)
Assignee PHILIPS LIGHTING HOLDING B.V., Eindhoven (NL)

Claim of US Patent No. 10,143,050

1. A controller adapted to control a dimmable light source, wherein the controller comprises an input adapted to receive a second dimming level, which is different to a first dimming level to which the light source is set and an output for providing control commands to the light source to control the brightness level over time,wherein the controller is adapted to:
set a fade time over which the light source is to be controlled to adjust the light source output from the first dimming level to the second dimming level, wherein the fade time is selected in dependence on both the difference between the first and second dimming levels and the absolute value of at least one of the first and second dimming levels; and adapted to control the light source to adjust the dimming level over the course of the set fade time.