TELEVISION RECEIVER.

摘要

First signals indicating the synchromisation locked state or second signals indicating the synchronisation unlocked state are obtained depending upon whether the frame signals are detected or not in the input video signals. When the first signals are obtained, outputs of a signal processing circuit (110) are selected to display high-definition television signals and when the second signals are obtained, outputs of a pattern generating circuit (114) are selected to prevent noise and the lift from being displayed.