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:
Aug. 18, 2015
Filed:
Oct. 16, 2012
Koninklijke Philips N.v., Eindhoven, NL;
Hugo Veenstra, Kleine Brogel, NL;
Harald Josef Günther Radermacher, Aachen, DE;
Bob Bernardus Anthonius Theunissen, Zaltbommel, NL;
Adrianus Sempel, Waalre, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
To avoid clock signals and to separate power wiring from control wiring in a driver, and to avoid three-terminal light emitting diodes with control electrodes, a driver for driving light emitting diode circuits () is provided with first and second terminals () for receiving a voltage signal from a source () and with a first switching circuit () coupled to the second terminal () and to a third terminal (). The first and the thirdterminal () are to be coupled to electrodes of a first light emitting diode circuit (). The first switching circuit () comprises a first switch () and a first timing circuit () for, in response to a first pulse signal as added to the voltage signal, activating the first switch () to switch on the first light emitting diode circuit (). Sequential pulse signals may be used to sequentially switch on light emitting diode circuits ().