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. 08, 2017
Filed:
Dec. 29, 2015
Seiko Epson Corporation, Tokyo, JP;
Osamu Saito, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A discharge lamp drive device includes a resonant circuit section connected to a discharge lamp, a power conversion section configured to convert direct-current power into alternating-current power, and supply the discharge lamp with the alternating-current power via the resonant circuit section, and a control section configured to supply the discharge lamp with the alternating-current power having a first frequency and a second frequency higher than the first frequency in a lighting start period until the discharge lamp reaches a steady lighting state, the first frequency is a frequency for causing a resonance of the resonant circuit section, and the second frequency is a quasi-resonant frequency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile