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:
Jun. 18, 2019
Filed:
Sep. 19, 2018
Applicant:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Inventors:
Takuya Murakami, Shizuoka, JP;
Shunichiro Yoshida, Shizuoka, JP;
Assignee:
KOITO MANUFACTURING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01); B60Q 1/00 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0809 (2013.01); B60Q 1/0094 (2013.01); H05B 33/0842 (2013.01);
Abstract
There is provided a lighting circuit configured to drive a light source including a plurality of light emitting units connected in series. The lighting circuit includes a converter which is configured to supply a drive current to the light source, a plurality of high-side switches, each of which is provided between one end of a corresponding light emitting unit and one output of the converter, and a plurality of low-side switches, each of which is provided between another end of the corresponding light emitting unit and another output of the converter.