Patent ID: 6956620
Filing Date: 2005-10-18
Classification: H04N

Abstract:
1. An apparatus for separating luminance and chrominance signals; the apparatus comprising: first, second, third, and fourth delayers connected to a digital composite video signal in series, the first, second, third, and fourth delayers for delaying input signals each by 1 horizontal period; a first filter for separating a first chrominance signal from signals output from the first and second delayers; a second filter for separating a second chrominance signal from signals output from the second and third delayers; a vertical edge direction detector for detecting a vertical edge direction based on signals output from the second and fourth delayers and the digital composite video signal; a multiplexer for outputting one of the first and second chrominance signals according to a signal output from the vertical edge direction detector; a chrominance signal outputting unit for receiving the signal output from the multiplexer and for outputting a perfect chrominance signal, the chrominance signal outputting unit comprising: a luminance signal outputting unit for receiving the signal output from the second delayer and the perfect chrominance signal and for outputting a perfect luminance signal.