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. 25, 2020
Filed:
May. 04, 2018
Koito Manufacturing Co., Ltd., Tokyo, JP;
Tomoyuki Ichikawa, Shizuoka, JP;
Satoshi Kikuchi, Shizuoka, JP;
KOITO MANUFACTURING CO., LTD., Tokyo, JP;
Abstract
A vehicular lamp of the present disclosure supports a light-on mode for flickering a light source. A driving unit flickers the light source. An abnormality circuit asserts an abnormality detection signal while a predetermined state indicative of an abnormality state is detected during the light-on of the light source. A timer circuit (i) advances clocking while the abnormality detection signal is asserted, during the light-on of the light source, and resets clocking when the abnormality detection signal is negated; (ii) maintains the clocked time during an immediately preceding light-on period while the light source is turned off; and (iii) asserts a fail signal when the clocked time reaches a predetermined determination time.