Lighting unit, a system comprising it and a control method...

Details Lighting unit, a system comprising it and a control method... Lighting unit, a system comprising it and a control method...

2011-05-31

2011-05-31

Chang, Daniel D (Department: 2819)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Plural load device regulation

C315S195000, C315S318000, C340S538000, C340S003300

Reexamination Certificate

active

07952302

ABSTRACT:
A method for controlling the operation of a lighting unit comprising a plurality of lighting elements and a dimmable power supply unit with an output for adjusting the brightness of at least some of the lighting elements. The method provides that for at least one dimmer setting at least one real electrical parameter is measured, as a function of the absorption of the lighting elements and that the measured electrical parameter is compared with at least one previously-stored theoretical value.

REFERENCES:
patent: 5471119 (1995-11-01), Ranganath et al.
patent: 6388396 (2002-05-01), Katyl et al.
patent: 6400103 (2002-06-01), Adamson
patent: 2005/0231125 (2005-10-01), Becattini
patent: 2274852 (1995-06-01), None
patent: 2345998 (2000-07-01), None

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