Digital ghost cancellation using teletext data lines

摘要

A method for reducing a ghost constituent of a composite video signal. The composite video signal includes a teletext data lines constituent. The method includes the step of detecting and processing two teletext data line constituent so as to obtain a ghost induced error. The method of further includes the step of utilizing the ghost induced error for calculating filter coefficients and applying the composite video signal to a filter having the filter coefficient for obtaining deghosted composite video signal.