A video signal processing apparatus is provided which can be used when a transmitted video signal is displayed on a screen or a CRT having an aspect ratio (e.g. 9:16) different from an aspect ration (e.g. 4:3) of the transmitted video signal. When the video signal is time-base-compressed and displayed...http://www.google.de/patents/US5177609?utm_source=gb-gplus-sharePatent US5177609 - Video signal time base compression apparatus