Nxp B.v.

Peter H F Deurenberg

Gert Van Der Horn

Cornelis J P M Rooijackers

A controller for controlling a power generator circuit, and a method for operation such a controller, is disclosed. The invention is particularly suited to LED current generators. The current generator may be switched off to conserve power when not required for any LED circuits. The method relates to determining the time at which the controller is required to provide power, current or voltage, and to adjust the timing of switching-on of the controller, in order to ensure that power, current or voltage is available for the load when required.

Controller and method of operating a controller

The present invention relates to a LED lighting system () comprising at least a central controller () for just controlling a communication databus () in broadcast mode, and a distribution of LED controllers (R,G,B) for individually controlling each LED (R,G,B) through a respective driver (R,G,B). The central controller () broadcasts targeted setting values from an external user () to all the distributed LED controllers (R,G,B) through the databus (). The LED controllers (R,G,B) convert the values using a shared calibration matrix into transformed values for each LED color (R, G, B). In the case that some of these transformed values cannot be rendered by the LED lighting system (), the targeted setting values can be properly adjusted either externally through a feedback signal sent over a link () back to the user (), or internally through a notification signal broadcast over the databus () back to the central controller ().

Multi-core light engine architecture

The application relates to setting color point and light intensity. By controlling the phase as well as the amplitudes of a driving voltage for a lighting device, the color point as well as the light intensity of a lighting device may be set.

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's-Hertogenbosch, Netherlands

Peter H F Deurenberg