Reliable lighting system
AssigneeKoninklijke Philips Electronics N.V.
InventorsMatthias Wendt, Theodore James Letavic
Life of this patent
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Abstract
A lighting system (1) and its applications are described that are suitable especially in the realm of lighting systems (1) with high power light emitting diodes (LEDs). The lighting system (1) comprises a control circuit (3) with a memory device (4) and a refresh circuit (10), and the refresh circuit (10) is adapted to prevent data loss of the memory device (4) due to the reduction of the retention time of the memory device (4) caused by the high operation temperature of the LEDs.
Claims8
Lighting system (1) comprising at least one light emitting device (2), a control circuit (3) with a memory device (4) and a refresh circuit (10), and the refresh circuit (10) is adapted to prevent data loss of the memory device (4).
A method of driving a lighting system (1) comprising at least one light emitting device (2), a control circuit (3) with a memory device (4) and a refresh circuit (10), the method comprising the steps of:
- storing data in the memory device (4);
- controlling the lighting system (1) by means of the control circuit (3) and
- refreshing the data stored by means of the memory device (4) by means of the refresh circuit (10).
Dependencies are inferred from the claim text.