Signal-dropout correction circuit for correcting video signals disturbed by signal dropouts.

摘要

A dropout correction circuit is described. It comprises a dropout detector (10), which compares a signal with a reference level and controls a switch (5) which connects an output of the circuit to a line memory (1), in order to insert a corresponding part of a preceding line during such a dropout. In order to enable the reference level to be selected as high as possible the colour carrier is extracted before the video signal is applied to the dropout detector.