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:
May. 20, 2008
Filed:
Nov. 23, 2004
Hoyoung Lee, Gyeonggi-do, KR;
Changyeong Kim, Gyeonggi-do, KR;
Dusik Park, Gyeonggi-do, KR;
Seongdeok Lee, Gyeonggi-do, KR;
Alexey Lukin, Moscow, RU;
Hoyoung Lee, Gyeonggi-do, KR;
Changyeong Kim, Gyeonggi-do, KR;
Dusik Park, Gyeonggi-do, KR;
Seongdeok Lee, Gyeonggi-do, KR;
Alexey Lukin, Moscow, RU;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A method converts a resolution of video signals, the method including: calculating up-sampling and down-sampling ratios based on a resolution of an input video signal and a desired resolution of an output video signal; calculating a number of filter tabs by multiplying the up-sampling and down-sampling ratios by a number of side lobes; calculating first filter coefficients of a same number of the filter tabs by multiplying a window function by a sinc function; calculating final filter coefficients by subtracting a result of a multiplication of a Gaussian function by a window function from the first filter coefficients, and then normalizing the final filter coefficients; and performing filtering in vertical and horizontal directions based on the final filter coefficients by modifying a sampling rate of an input video signal depending on the up-sampling and down-sampling ratios, to obtain clear video images.