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. 30, 2016
Filed:
Oct. 23, 2015
Automotive Lighting Italia S.p.a., Venaria Reale, IT;
Giancarlo Codutti, Tolmezzo, IT;
Davide Baccarin, Tolmezzo, IT;
Alberto Guiotto, Tolmezzo, IT;
Jasmin Kreso, Tolmezzo, IT;
Automotive Lighting Italia S.p.A., Venarla Reale, IT;
Abstract
A method for controlling a motor-vehicle lighting device is provided that uses LEDs supplied with PWM signals temporally spaced apart from one another by a first time phase tand a second time phase t. An interval of interest is defined in which an electromagnetic disturbance must not exceed a maximum threshold value θmax; driving signals are supplied on the basis of first phases tand tcomputed; and the measured or simulated waveform of the electromagnetic disturbance deriving from the phases tand tis compared with the maximum threshold value within the interval of interest defined. Where the waveform of the disturbance exceeds the threshold, two phases tand t, once again different from one another, are recalculated; otherwise, the last phases tand tcalculated are selected and used in the PWM control. An advantageous motor-vehicle lighting device is also provided.