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. 07, 2010
Filed:
Jul. 14, 2008
Thijs Oosterbaan, Eindhoven, NL;
Bernardus Lambertus Martinus Van Bakel, Eindhoven, NL;
Joseph Franciscus Raymond Eijsermans, Eindhoven, NL;
Nicola Bettina Pfeffer, Eindhoven, NL;
Marinus Cornelis Raas, Eindhoven, NL;
Thijs Oosterbaan, Eindhoven, NL;
Bernardus Lambertus Martinus Van Bakel, Eindhoven, NL;
Joseph Franciscus Raymond Eijsermans, Eindhoven, NL;
Nicola Bettina Pfeffer, Eindhoven, NL;
Marinus Cornelis Raas, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A color adjustable lamp may be controlled using a well-known TRIAC dimmer circuit. The color adjustable lamp comprises two or more light sources. Each light source may output light having a different color. By setting an output intensity of each light source, light having a desired color may be output. A circuit or a processing unit comprised in a lamp driving circuit may detect a set phase angle of the TRIAC dimmer circuit by determining a shape of the supplied alternating voltage. According to the determined shape, the circuit or processing unit controls a lamp driver circuit for each light source in order to control the intensity of the light output by each light source.