An apparatus and method to record digital audio/video data originating from different sources in different data formats in a single format for recording on a digital cassette. The apparatus utilizes common circuitry to receive, record and playback the audio/video data while keeping the ...http://www.google.ca/patents/US5832085?utm_source=gb-gplus-sharePatent US5832085 - Method and apparatus storing multiple protocol, compressed audio video data 
