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:
May. 22, 2018
Filed:
Apr. 26, 2013
Philips Lighting Holding B.v., Eindhoven, NL;
Harald Josef Günther Radermacher, Aachen, DE;
Klaas Jacob Lulofs, Eindhoven, NL;
Lino Adriaan Nicolaas Wilhelm De Wit, Eindhoven, NL;
Peter Hubertus Franciscus Deurenberg, s-Hertogenbosch, NL;
PHILIPS LIGHTING HOLDINGS B.V., Eindhoven, NL;
Abstract
The invention relates to a LED lighting system comprising a power supply circuit and at least one LED module. The power supply circuit comprises input terminals (K, K) for connection to a supply voltage source and output terminals (KK),and a driver circuit (I, II) coupled between the input terminals and the output terminals for generating a LED current out of a supply voltage supplied by the supply voltage source, and comprising a driver control circuit (II) with an input terminal (K) for receiving a current control signal and for generating a LED current in dependency of the current control signal. The at least one LED module comprises input terminals (K, K) for coupling to the output terminals of the power supply circuit, a LED load (LS) coupled between the input terminals, and a module control circuit for generating a current control signal as a square wave shaped signal comprising a first part having a first amplitude during a first time lapse representing a desired magnitude of the LED current, said module control circuit comprising an AC coupling of the current control signal to the input terminal of the driver control circuit.