LaserDisc

Rare card · No. 44025

LaserDisc (LD) is a home video format and the first commercial optical disc storage medium. It was developed by Philips, Pioneer, and the movie studio MCA. The format was initially marketed in the United States in 1978 under the name DiscoVision, a brand used by MCA. As Pioneer took a greater role in its development and promotion, the format was rebranded LaserVision (LV). While the LaserDisc brand originally referred specifically to Pioneer's line of players, the term gradually came to be used generically to refer to the format as a whole, making it a genericized trademark. The discs typically have a diameter of 300 millimeters (11.8 in), similar in size to the 12-inch (305 mm) phonograph record. Unlike most later optical disc formats, LaserDisc is not fully digital; it stores an analog video signal. Many titles featured CD-quality digital audio, and LaserDisc was the first home video format to support surround sound. Its resolution of 425 to 440 TV lines was nearly double that of competing...

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