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:
Apr. 25, 2017
Filed:
Mar. 01, 2016
Seiko Epson Corporation, Tokyo, JP;
Shun Sato, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
In an aspect of a discharge lamp driving device, a control unit performs first discharge lamp driving in which a first control and a second control are performed, and a second discharge lamp driving in which a third control and a fourth control are performed, a ratio of a DC current in the second control is higher than a ratio of the DC current in the first control, a ratio of the DC current in the fourth control is higher than a ratio of the DC current in the third control and is higher than the ratio of the DC current in the second control, and the control unit performs a transition from the second discharge lamp driving to the first discharge lamp driving in a case where an inter-electrode voltage is lower than a first reverse transition voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile