Patent ID: 8102472
Filing Date: 2012-01-24
Classification: H04N

Abstract:
1. An image processing apparatus comprising: a cross-color detecting module, for receiving a composite signal and determining whether at least one pixel carried by the composite signal has cross-color effect; and an image processing module, coupled to the cross-color detecting module, for receiving the composite signal and performing a first predetermined operation or a second predetermined operation on the composite signal to generate a corresponding chrominance signal; wherein when the pixel has cross-color effect, the image processing module outputs a chrominance value corresponding to the pixel from the chrominance signal processed through the first predetermined operation, and when the pixel does not have cross-color effect, the image processing module outputs the chrominance value from the chrominance signal processed through the second predetermined operation; wherein the image processing module comprises: a comb filter, capable of utilizing a first filtering band or a second filtering band to perform a filtering operation, wherein the second filtering band is wider than the first filtering band; and wherein when the pixel has cross-color effect, the comb filter utilizes the first filtering band for performing the filtering operation on the composite signal to perform the first predetermined operation, and when the pixel does not have cross-color effect, the comb filter utilizes the second filtering band for performing the filtering operation on the composite signal to perform the second predetermined operation.