Patent ID: 7236211

Claim:
A method of inter-frame Y/C separation, comprising: sampling a composite video signal for temporarily storing a plurality of sampled data F m P x,y , wherein the F m P x,y represents data of the y pixel at the x line of the m frame, and the m, x and y are integers larger than, or equal to, 0; measuring a plurality of luma data Y x,y by a F m+1 P x,y , the F m P x,y , a F m−1 P x,y and a F m−2 P x,y , wherein Y x,y represents luma data of the y pixel of the x line, and Y x,y =(F m+1 P x,y +F m P x,y +F m−1 P x,y +F m−2 P x,y )/4; and measuring a plurality of chroma data C x,y by the F m+1 P x,y, the F m P x,y , the F m−1 P x,y and the F m−2 P x,y , wherein C x,y represents chroma data of the y pixel of the x line.