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. 16, 2023
Filed:
Mar. 27, 2020
Applicant:
Marelli Automotive Lighting Italy S.p.a., Venaria Reale, IT;
Inventors:
Assignee:
Marelli Automotive Lighting Italy S.p.A., Venaria Reale, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/26 (2020.01); B60Q 1/02 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2635 (2013.01); B60Q 1/02 (2013.01);
Abstract
An automobile lighting unit is provided that includes a lighting device provided with one or more OLED light sources, and an electronic device configured in such a way as to control an OLED light source by means of a pilot signal which has a trailing edge wherein the pilot signal varies between a high value and a low value, to determine an electrical quantity indicative of the electrical behaviour of the OLED light source in a measurement time interval (toff) following the trailing edge of said pilot signal, and to determine a failure condition of the OLED light source on the basis of an electrical quantity.