Separating Y, I, Q components of NTSC composite signal
David A. Border, Subhash C. Kwatra · 2005
A new technique for separating the composite NTSC television signal into its components is presented in this paper. An allpass filter is used to separate the luminance and chrominance components. The chrominance is then separated into its I and Q components using an algebraic technique rather than the conventional demodulation and filtering technique.