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. 13, 2019
Filed:
Sep. 25, 2018
Seiko Epson Corporation, Tokyo, JP;
Takeshi Sowa, Matsumoto, JP;
Osamu Nakajima, Suwa, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A projector includes a light source, light modulation device, first driver, and second driver. The first driver is configured to drive the light modulation device to alternately provide a first polarity period and a second polarity period. The second driver is configured to drive the light source so that timings of switching related to a drive current coincide between the first polarity period and the second polarity period. The timings of switching are different from each other between a first period and a second period. The first period contains one first polarity period and one second polarity period adjacent to the one first polarity period. The second period is adjacent to the first period and contains another first polarity period than the one first polarity period and another second polarity period than the one second polarity period. The another second polarity period is adjacent to the another first polarity period.