Patent ID: 7330219

Claim:
A YC separator circuit comprising: a color signal separator circuit for separating a color signal from a composite signal using a two-line comb filter or a three-line comb filter; a first luminance signal separator circuit for separating a luminance signal by subtracting the color signal separated by said color signal separator circuit from said composite signal; a second luminance signal separator circuit for separating a luminance signal from said composite signal using a frequency filter; a luminance correlation determining circuit for calculating a difference between respective luminance signals input from said first and second luminance signal separator circuits; and a selector circuit for selectively outputting the luminance signal separated by said first luminance signal separator circuit when said difference is larger than a predetermined value, and for selectively outputting the luminance signal separated by said second luminance signal separator circuit when said difference is smaller than a second predetermined value (first predetermined value=second predetermined value).