Patent ID: 7920211

Claim:
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 or 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 image scene analysis unit is configured to derive a histogram of pixels within one frame of the input signal, and the image scene is analyzed based on the derived histogram; and 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.