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:
Mar. 13, 2018
Filed:
Feb. 10, 2016
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Hiroyuki Nakamura, Atsugi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/042 (2006.01); H01S 5/0683 (2006.01); H05B 33/08 (2006.01); H01S 5/068 (2006.01); B41J 2/435 (2006.01); G03G 15/04 (2006.01);
U.S. Cl.
CPC ...
H01S 5/0427 (2013.01); H01S 5/06808 (2013.01); H01S 5/06832 (2013.01); H05B 33/0818 (2013.01); B41J 2/435 (2013.01); G03G 15/04054 (2013.01);
Abstract
A driving circuit for causing a light emitting element to emit light in response to a driving signal is provided. The driving circuit comprising a first current supply circuit that starts to supply a driving current to the light emitting element in response to the driving signal, a second current supply circuit that starts to supply a supplementary current to the light emitting element in response to the driving signal. The second current supply circuit stops to supply the supplementary current upon detecting that a voltage applied to the light emitting element has reached a threshold voltage.