Television – Image signal processing circuitry specific to television – Special effects
Reexamination Certificate
2008-05-20
2008-05-20
Ometz, David (Department: 2622)
Television
Image signal processing circuitry specific to television
Special effects
C348S441000, C348S561000, C382S299000, C382S298000
Reexamination Certificate
active
07375767
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.
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European Search Report (in English) issued Mar. 14, 2005 for corresponding European patent application.
Kim Chang-yeong
Lee Ho-young
Lee Seong-deok
Lukin Alexey
Park Du-sik
Desir Jean W.
Ometz David
Samsung Electronics Co,. Ltd.
Staas & Halsey , LLP
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