looked around for LD info, didn't realize it's roots go back so far
"The first press showing of MCA's Disco-Vision system occurred on December 12, 1972 on a sound stage at Universal Studios. MCA handed out a press kit that contained pictures of mock-up boxes, pictures of the player, a sample disc, labeled Airport . It is unknown if the sample discs contain any actual program as the only player ever capable of playing these discs was a prototype unit shown in the image on the right. However, a the prototype player did play a video program which ran seven minutes and contained clips of MCA's film collection. Representatives from electronics companies around the world were invited and were members of the press. Kent Broadbent gave a presentation on the technical aspects of the system and distributed a paper that went into great depth about the system."
"By what some might consider a strange coincidence, Philips was developing a very similar optical Videodisc system in the Netherlands. It really wasn't that far fetched as Gauss Electrophysics had pitched the videodisc system to Philips in 1967, but they elected to pass. Representatives from Philips were at the press conference in December 1972, and impressed by what was demonstrated, contacted Disco-Vision immediately. The two systems were strikingly similar in many respects. Disco-Vision did have a distinct advantage as they had been able to demonstrate their system from replicated discs, where Philips was still using the glass master as the playback source."
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