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:
Mar. 12, 2013
Filed:
Jun. 11, 2008
Applicants:
Neil D. Woodall, Newport Beach, CA (US);
Carl Alelyunas, West Linn, OR (US);
Minghui Yang, Shanghai, CN;
Inventors:
Neil D. Woodall, Newport Beach, CA (US);
Carl Alelyunas, West Linn, OR (US);
Minghui Yang, Shanghai, CN;
Assignee:
Pixelworks, Inc., Tualatin, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/40 (2006.01); G06K 9/36 (2006.01); H04N 3/22 (2006.01); H04N 3/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods for reducing optical distortion such as keystone distortion can include receiving an input image and modifying the input image by applying two separate 1D operations to the input image and applying a polyphase filter to the input image, where the first 1D operation is performed after application of the second 1D operation has begun. The modified image can then be projected.