Robin, Blecker, Daley & Driscoll
Video system using two different kinds of recording media
 A video system is arranged to record, on a second recording medium of a relatively small capacity, a given period portion of a video signal relating to an image plane representing each of varied programs included in the video signal and information on a recorded position of each of the programs on a first recording medium which has a relatively large capacity. 
Canon Kabushiki Kaisha
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Koji Katsuji Yasutomo
Takahashi Yoshimura Suzuki