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:
Jan. 01, 2019
Filed:
Aug. 29, 2012
Dennis Johannes Antonius Claessens, Eindhoven, NL;
Jascha Van Pommeren, Utrecht, NL;
Jan Wojciech Obrebski, Eindhoven, NL;
Yi Wang, Delft, NL;
Philip Louis Zulma Vael, Temse, BE;
Sait Izmit, Utrecht, NL;
Dennis Johannes Antonius Claessens, Eindhoven, NL;
Jascha Van Pommeren, Utrecht, NL;
Jan Wojciech Obrebski, Eindhoven, NL;
Yi Wang, Delft, NL;
Philip Louis Zulma Vael, Temse, BE;
Sait Izmit, Utrecht, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
A circuit arrangement for controlling the brightness of at least one LED unit is described by the disclosure. The circuit arrangement, in one example, includes an input for receiving a phase-cut operating voltage from a power supply, a signal processor, connected with the input and adapted to provide a dimming signal for the at least one LED unit from the operating voltage. To allow an efficient reduction of noise in the dimming signal but simultaneously to allow an improved dimming of the LED unit, the signal processor are configured to operate at least in a noise suppression mode and a dimming mode. A control device is provided, connected with the signal processor and configured to set the mode of the signal processor in dependence of the variation in the operating voltage.