for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter

Full Title

Details of colour television systems > Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase (circuits for matrixing H04N9/67) > for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter