Patent ID: 8411207
Filing Date: 2013-04-02
Classification: H04N

Abstract:
1. A device for outputting a luminance signal in an image processing system, in the system, a composite video signal having a chrominance component and a luminance component, a 2D comb filter receiving the composite video signal of a frame and outputting a 2D luminance signal based on the luminance component, the chrominance component being modulated onto a carrier frequency, the device comprising: an image smoothing unit, receiving the 2D luminance signal and decreasing a signal intensity of a component of the 2D luminance signal within a frequency range with respect to the carrier frequency of the chrominance component; a band pass filter unit, passing the component of the 2D luminance signal within the frequency range with respect to the carrier frequency while filtering out the other components of the 2D luminance signal; and a summing unit, summing the output of the image smoothing unit and the output of the band pass filter unit to generate a resultant luminance signal.