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:
Dec. 26, 2017
Filed:
Jan. 13, 2012
Applicant:
Hiroshi Kato, Tokyo, JP;
Inventor:
Hiroshi Kato, Tokyo, JP;
Assignee:
NEC DISPLAY SOLUTIONS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/32 (2016.01); G03B 21/16 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
G09G 3/32 (2013.01); G03B 21/16 (2013.01); G03B 21/2053 (2013.01);
Abstract
A projection-type display which projects and displays images in accordance with an image signal includes a light source for projecting the images, output means that is equipped with a coil and switch, that uses electromagnetic induction of the coil to supply a current, and that changes the magnitude of the current by means of the switch, a cooling fan that cools the projection-type display device and for which the rotational speed is variable; and control means that, upon receiving an instruction to set a first mode in which a first current is intermittently supplied to the light source.