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:
Nov. 21, 2017
Filed:
Feb. 22, 2016
Applicant:
Oki Data Corporation, Tokyo, JP;
Inventor:
Akira Nagumo, Takasaki, JP;
Assignee:
Oki Data Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0842 (2013.01);
Abstract
Provided is a light-emission drive circuit that includes a power supply and a pull-up circuit. The power supply is configured to generate a voltage that is higher than a voltage in a controller. The controller is configured to supply a control signal that drives a light-emitting section. The pull-up circuit is provided between the power supply and an input terminal of the light-emission drive circuit, and includes a switching section configured to be turned on when a voltage of the input terminal is lower than a predetermined voltage. The predetermined voltage is lower than the voltage of the power supply.