Method for obtaining line synchronization information items from a video signal, and apparatus for carrying out the method

摘要

A method for obtaining line synchronization information items from a video signal is proposed. To that end, the following improvement measures are proposed:a) an accurate determination of the position of a line synchronization pulse is effected by carrying out a convolution operation between the video signal for the video line and a pattern function. The exact position is then established by analysis of the result function (phisv(k)) of the convolution operation.B) time-domain filtering of the established positions of the line synchronization pulses is carried out, in which a linear or non-linear estimation for the purpose of determining the corrected positions of the line synchronization pulses is carried out in each case.The invention also relates to an apparatus for carrying out the method.