Patent ID: 8421926
Filing Date: 2013-04-16
Classification: H04N

Abstract:
1. A device for outputting a luminance signal in an image processing system, a composite video signal of a frame having a chrominance component and a luminance component, wherein a 3D (three dimensional) comb filter receiving the composite video signal of the frame and outputting a 3D luminance signal based on the luminance component, and wherein the chrominance component being modulated onto a carrier frequency, the device comprising: a chrominance judgment unit, comprising: a field observation unit, comprising: an output unit, wherein the output unit outputs the 3D luminance signal, of which a component within the frequency range with respect to the carrier frequency of the chrominance component is notch filtered, when the judgment results of the luminance detection unit and the chrominance motion detection unit are true; the output unit outputs the 3D luminance signal, of which the component within the frequency range with respect to the carrier frequency of the chrominance component is notch filtered, when at least one of the difference value of the maximum values and the difference value of the minimum values in the N-point cycles of the first and third fields is greater than the third threshold value, and a detection result of the edge area detection unit is false; otherwise, the output unit outputs the 3D luminance signal.