Patent ID: 7110045
Filing Date: 2006-09-19
Classification: H04N

Abstract:
1. A Y/C separator for carrying out Y/C separation of a composite color television signal, said Y/C separator comprising: an extractor for receiving the composite color television signal, and for extracting with a delay circuit a target sample, forward and backward samples of the target sample on a same scanning line, upper and lower samples of the target sample located on upper and lower scanning lines adjacent to the target sample, and diagonal samples of the target sample diagonally located with respect to the target sample; a chrominance component calculating section for outputting chrominance calculation values from the forward and backward samples, the upper and lower samples, and the diagonal samples extracted from said extractor; a selector for receiving the outputs of said chrominance component calculating section, and for selecting one of them; a correlation detecting section for receiving the composite color television signal passing through the delay circuit and a filter for rejecting a color component signal, for extracting a second samples corresponding to the target sample, the forward and backward samples, the upper and lower samples and the diagonal samples, and for calculating and outputting correlations of the second samples extracted in the vertical, horizontal and two diagonal directions; and a selection table for receiving the output of said correlation detecting section, and for controlling selection of said selector, wherein the Y/C separation of the composite color television signal is carried out in response to the signal output from said selector.