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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.:

US 9928806 B1

PDFFull Text
Date of Patent:
Mar. 27, 2018

Filed:

Jun. 08, 2015

Projection display apparatus having an optical element projecting modulated light, method for controlling the same, and electronic device

Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventor:

Takashi Toyooka, Matsumoto, JP;

Assignee:

SEIKO EPSON CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

William Boddie

Assistant Examiner:

Andrew Schnirel

Int. Cl.
CPC ...
G09G 3/36 (2006.01); G09G 5/10 (2006.01); G09G 3/20 (2006.01); G09G 5/18 (2006.01); H04N 5/74 (2006.01); G09G 3/34 (2006.01); G09G 3/00 (2006.01);
U.S. Cl.
CPC ...
G09G 5/10 (2013.01); G09G 3/2022 (2013.01); G09G 3/3648 (2013.01); G09G 5/18 (2013.01); H04N 5/74 (2013.01); G09G 3/002 (2013.01); G09G 3/2081 (2013.01); G09G 3/3406 (2013.01); G09G 2310/066 (2013.01); G09G 2320/0633 (2013.01);
Abstract

An image display apparatus includes a light-source driving circuit that drives a light source to cyclically change brightness. A control unit controls a pixel to turn on and off over a plurality of subfields in a field so that transmittance or reflectance in the pixel over the plurality of subfields in the field corresponds to a gray level specified for the pixel. The control unit also arranges the plurality of subfields such that two or more gray-level defining subfields maintain a predetermined relationship with respect to the cyclical change in brightness of the light source caused by drive of a light-source driving circuit.

Find Patent Forward Citations

Toyooka, Takashi. (2018). Projection display apparatus having an optical element projecting modulated light, method for controlling the same, and electronic device (U.S. Patent No. 9928806). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9928806

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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