A PAL signal demodulating apparatus comprises BPF filters that perform band pass filtering to pass a chroma band for frames 1 to 5, thereby producing the BPF output signals for the frames, a 3D color phase distortion correcting color signal acquiring unit that calculates correlations between frames 1 and 3 and between frames 3 and 5 and takes a weighted average of the BPF output signals for frames 2 and 4 with weights according to the two calculated correlations, thereby producing a 3D color phase distortion correcting color signal N, and a carrier chrominance signal extracting unit that takes the addition/subtraction of the BPF output signal for frame 3 and the 3D color phase distortion correcting color signal, thereby extracting carrier chrominance signals, to perform correctly U/V separation for a line different in color from its preceding and following lines in the same frame.