A video recording and playback device (10) incorporates a processor (114) for processing the video signal to detect the presence of commercial messages. Video and audio event detectors (102, 104) detect the presence of events in the signal as it is recorded. The timing relationship of the detected events...http://www.google.com.au/patents/US5987210?utm_source=gb-gplus-sharePatent US5987210 - Method and apparatus for eliminating television commercial messages
