Non-sharp cut filters for assembling and splitting in weston...

Details Non-sharp cut filters for assembling and splitting in weston... Non-sharp cut filters for assembling and splitting in weston...

H - Electricity

04

N

H04N 11/16 (2006.01)

Patent

CA 2078432

2078432 9213425 PCTABS00014 An assembler and splitter of a Weston PAL (W-PAL) video signal has filter functions F1, F2 at the assembler for the luminance and chrominance components and corresponding functions F3, F4 at the splitter. The transfer functions are defined as F1 = (L2 + L1)/2 + (L2 - L1) z-1/2, F2 = -(H1 - H2)/2 + (H1 + H2) z-1/2, F3 = (L2 - L1)/2 + (L2 + L1) z-1/2, F4 = (H1 + H2)/2 - (H1 - H2) z-1/2 and wherein H1 (f) = L2 (2fsc - f) and H2 (f) = L1 (2fsc - f). Thus the filters are non-sharp cut and are compatible with normal PAL.

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