The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2003
Filed:
Jan. 16, 2002
Applicant:
Inventors:
Marcel Beij, Eindhoven, NL;
Arnold Willem Buij, Eindhoven, NL;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 4/100 ;
U.S. Cl.
CPC ...
H05B 4/100 ;
Abstract
A method of feeding a fluorescent lamp, wherein the actual power through the lamp is measured, an actual power value is determined by means of a moving weighted average of a series of most recently measured actual power values, wherein a measured actual power value is substituted with an alternative value if said measured value exceeds a predetermined maximum difference with respect to said average value, and wherein said measured actual power value is compared with a target value, and the power through the lamp is adjusted in the case of a significant difference.