Patent ID: 7420624

Claim:
A three-dimensional video composite signal demodulating method capable of inhibiting pseudo-color noises, which decodes an input video composite signal in order to separate a luminance signal and a chroma signal of the input video composite signal, the method comprising: a two-dimensional luminance and chroma signal separating step, which separates a two-dimensional luminance signal and a two-dimensional chroma signal out of the input video composite signal; a three-dimensional luminance and chroma signal separating step, which separates a three-dimensional luminance signal, a three-dimensional chroma signal and an index out of the input video composite signal; a luminance weighting step, which performs a weighting operation on the two-dimensional and the three-dimensional luminance signals according to the index, thereby producing a weighted luminance signal; a chroma weighting step, which performs the weighting operation on the two-dimensional and the three-dimensional chroma signals according to the index, thereby producing a weighted chroma signal; a band pass filtering step, which performs a band pass filtering on the weighted chroma signal, thereby producing a filtered and weighted chroma signal; and a noise filtering step, which filters noises out of the weighted luminance signal and the filtered and weighted chroma signal, thereby producing the luminance signal and the chroma signal.