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. 19, 2000
Filed:
Aug. 08, 1997
Alan P Cavallerano, White Plains, NY (US);
Claudio Ciacci, White Plains, NY (US);
Philips Electronics North America Corporation, New York, NY (US);
Abstract
A display or projection of an image as an array of pixels is, effectively, a sampling process, and pre- and post-filtering must be applied to avoid aliasing and to properly reconstruct the image. Because the sampling is performed by the display/projection of the pixels forming the image, the pre-filtering must be applied to the video signal before it is formed into pixels, and the post-filtering must be applied, optically, after the pixels are formed. The pre-filtering process can also compensate for the non-uniform characteristics of the display or the post-filtering process. As such, the occurrence and severity of visual artifacts introduced into the display or projection of an image are reduced.