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:
Jun. 30, 2015
Filed:
Dec. 28, 2010
SO Nishimura, Tokyo, JP;
So Nishimura, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
There are provided a video projection device and a video projection method which can realize both a guarantee of safety and an increase in luminance of a screen. The video projection device includes: a laser light source unit which emits a laser; a laser scanning unit which is provided with one or more scanning directions and project video by performing a reciprocating scan of the laser with respect to a scanning direction with the highest scanning frequency; and a control unit which controls operations of the laser light source unit and the laser scanning unit depending on a video signal so that a scanning angle when emission of the laser in an outgoing path is stopped is different from a scanning angle when emission of the laser in a return path is started with respect to the scanning direction along which the reciprocating scan is performed.