SCHALTUNGSANORDNUNG ZUR BEARBEITUNG VON VIDEOKOMPONENTEN.

摘要

The video processing circuit allows the image frame to be reduced to be digitalised for insertion in the original image frame in reduced format. The chromimance components (U,V) of the processed video signal are fed to a multiplexer (1) operated at a switching frequency (FH/8) which is less than the line frequency. The luminance component (Y) and the output signal from the first multiplexer (1) are fed to a second multiplexer (2) which is operated at a switching frequency which is half the image frequency, its output fed to a D/A converter (4). Pref. the swtiching frequency (FH/8) of the first multiplier is equal to one eighth of the line frequency.