Method and apparatus for demultiplexing a colour video signal.

摘要

A recording luminance signal and a recording carrier chrominance signal extracted from an input composite color video signal are converted into a frequency-modulated recording luminance signal and a frequency-lowered recording carrier chrominance signal respectively. The frequency-lowered recording carrier chrominance signal and the frequency-modulated recording luminance signal are combined into a frequency-division multiplexed recording signal, which is recorded on a recording medium. A frequency-division multiplexed signal is reproduced from the recording medium. A filter (13,20) separates the reproduced frequency-division multiplexed signal into a reproduced frequency-lowered carrier chrominance signal and a reproduced frequency-modulated luminance signal, which are converted back into a reproduced luminance signal and a reproduced carrier chrominance signal respectively. A comb filter (29 removes luminance signal components from the reproduced carrier chrominance signal and derives a second reproduced carrier chrominance signal. The reproduced luminance signal and the second reproduced carrier chrominance signal are combined into a reproduced composite color video signal.