Pioneer PR7820
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The Pioneer PR-7820 was the first mass-produced industrial LaserDisc player, sold originally as the MCA DiscoVision PR-7820. This unit was used in many General Motors dealerships as a source of training videos and presentation of GM's new line of cars and trucks in the late 1970s and early 1980s. After MCA DiscoVision shut down, Pioneer continued to sell the player under the Pioneer name as the Pioneer Model-III. The unit was a full Level-III player and could accept a data-dump from discs themselves. It could also be controlled by an external computer and could be genlocked to external video sources.[1][2]
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