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:
Jan. 21, 2020
Filed:
Sep. 16, 2016
Applicant:
Nec Display Solutions, Ltd., Tokyo, JP;
Inventor:
Masayuki Murakami, Tokyo, JP;
Assignee:
NEC DISPLAY SOLUTIONS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 9/31 (2006.01); G03B 21/00 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3114 (2013.01); G03B 21/008 (2013.01); G03B 21/204 (2013.01); H04N 9/312 (2013.01);
Abstract
In order to ensure uniform gradation reproducibility even when an error occurs in a phosphor wheel or a color wheel, an image in which gradations change in steps is displayed and the rotation operation of a phosphor wheel and a color wheel is controlled on the basis of color coordinate values of each gradation that are measured each time the input timings of the first reference signal and the second reference signal are changed a plurality of times.