laserdisc definition by Webster's New World
laserdisc - Computer Definition
An earlier optical disc technology for movies and training. Introduced in 1978, Pioneer LaserDisc players came out two years later and became the choice for commercial use. LaserDiscs were never widely used, and by the 1990s, they were replaced by Video CDs and then DVDs. LaserDiscs Were Analog Based on LaserVision, a combination of MCA Disco-Vision and Philips Video Long Play (VLP) systems, the LaserDisc recorded an analog composite video signal on a continuous, spiraling track (see CLV). Each side of the 12" platter held one hour of video in 108,000 frames. For interactive training and games, a circular track held one video frame (see CAV), and 54,000 frames allowed 30 minutes of video per side. Early LaserDiscs recorded only analog soundtracks, but digital was added later. Newer players let the user select the soundtrack for different languages or extra information on the same disc. See CED.