1. A cross-color/dot interference reduction circuit which reduces cross-color interference caused by leakage of a luminance signal component into a chrominance signal and dot interference caused by leakage of a chrominance signal component into a luminance signal in a color television signal, comprising: a signal generation unit configured to calculate a difference in an input signal including the luminance signal and the chrominance signal between adjacent frames and generate a difference signal; a component extraction unit configured to extract a cross-color/dot interference component from the difference signal; a combination output unit configured to combine an interference reduction signal corresponding to the cross-color/dot interference component with the input signal and provide an output signal with a reduced cross-color/dot interference; an image scene analysis unit configured to analyze an image scene contained in the input signal; and a signal amplification/attenuation unit configured to amplify/attenuate the interference reduction signal based on an image scene analysis result from the image scene analysis unit, wherein the output signal having an increased or decreased reduction effect of the cross-color/dot interference depending on a content of the image scene is output from the combination output unit.