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. 31, 2002
Filed:
Sep. 27, 1999
David Porter, Sacramento, CA (US);
Globalstreams, Inc., Emeryville, CA (US);
Abstract
A system and method for high definition video rescaling comprises receiving a source image including source pixels each having an associated amplitude, creating destination pixel locations for a rescaled image in accordance with a resealing factor, providing a normalized filter function, multiplying the normalized filter function with the amplitude of each source pixel to produce a filter function for each source pixel, and summing together the filter functions for the source pixels to generate a reconstructed function. The reconstructed function is sampled at the destination pixel locations to provide amplitudes for destination pixels. The amplitudes of the destination pixels are then incorporated into a rescaled image. The filter function is preferably a sinc product function. The sinc product function is a first sinc function having a first period multiplied by a second sinc function having a second period that is an odd integer multiple of the first period, so that the sinc product function has a smaller amplitude than a sinc function as the function converges to zero.