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.

Date of Patent:
May. 07, 2019

Filed:

Apr. 24, 2015
Applicant:

Nec Display Solutions, Ltd., Tokyo, JP;

Inventor:

Michio Kobayashi, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 9/31 (2006.01); G03B 21/14 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3114 (2013.01); G03B 21/14 (2013.01); G03B 21/204 (2013.01); H04N 9/312 (2013.01); H04N 9/3194 (2013.01);
Abstract

A projection-type display system has: a light-emitting wheel that, by rotating, sequentially supplies light excited by light emitted from a light source and transmitted or reflected light of light that is emitted by the light source; a color separation wheel that, by rotating, sequentially color-separates and supplies light output of the light-emitting wheel; an image-forming element that, in accordance with a picture signal, performs light modulation of the light supplied by the color separation wheel; a light detection unit that detects the light that has undergone light modulation; and control units that adjust the light modulation and rotation timing of the light-emitting wheel after adjusting the light modulation and rotation timing of the color separation wheel.


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