DiscoVision was much more than simply a movie platform. Early adoption at an industrial level began as General Motors started deploying PR-7820 players in a kiosk format to dealerships throughout the United States and Canada. This system utilized what is now referred to as a Level II data dump. Playback would be interrupted at startup by reading a set of programmed instructions stored on the Right audio track. When played back on a consumer player, this track would sound like an old modem or fax machine for a few seconds and would then fall silent. Once the program was loaded, it was executed - running through an introduction clip of some kind and then dropping to a menu. The user would then follow the instructions on the screen to select the programmed sequence, which could offer multiple segments, but also in multiple languages.
Updated: November 22, 2016
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