METHOD AND ARRANGEMENTS FOR CODING AND DECODING COLOUR TELEVISION SIGNALS USING A SEPARATE SERIES ARRANGEMENT OF A LOW-PASS FILTER AND A VERTICAL TEMPORAL FILTER FOR EACH COLORDIFFERENCE SIGNAL

摘要

It is known to carry out three-dimensional filtering operations at the transmitter and receiver end in colour television transmission systems in order to obtain by this means as few disturbances as possible in the form of cross-colour and cross-luminance during the reproduction. In such known systems, for example in a PAL colour television transmission system, the PAL encoding or PAL decoding occurs without taking into consideration eye-physiological facts. …??In the novel devices, a separate three-dimensional filtering is carried out in each of the two colour difference signal channels, the two part-filters being differently dimensioned. …IMAGE…