Video signal processing apparatus and method

A video signal processing apparatus comprising:

• a correlation value generation unit configured to generate a first, a second and a third correlation values based on five sequential video line signals C(n−2) to C(n+2) that include two kinds of color-difference signals transmitted line sequentially, the first correlation value indicating a degree of similarity between the signals C(n+1) and C(n−1), the second correlation value indicating a degree of similarity between the signals C(n+2) and C(n), and the third correlation value indicating a degree of similarity between the signals C(n) and C(n−2),
• a mixing ratio generation unit that generates a mixing ratio of the signals C(n+1) and C(n−1) according to a relative magnitude of the third correlation value with respect to the second correlation value when the degree of similarity between the signals C(n+1) and C(n−1) is evaluated to be smaller than a predetermined level based on the first correlation value;
• a signal mixing unit that mixes the signals C(n+1) and C(n−1) according to the mixing ratio;
• and
• an output unit that outputs a signal mixed by the signal mixing unit and the signal C(n) as two simultaneous color-difference signals.