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An early optical videodisc technology for movies and training. Introduced in 1978, Pioneer LaserDisc players came out two years later and became the choice for commercial use. Never widely used, by the 1990s, LaserDiscs were superseded by Video CDs and then DVDs.

LaserDiscs Were Analog
Based on LaserVision (combination of MCA Disco-Vision and Philips Video Long Play), 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 provided 30 minutes of video per side. The first LaserDiscs recorded analog audio, but digital audio was later added, and newer players supported multiple language soundtracks. See CED.

Pioneer LaserDisc Player
The LaserDisc platter looks like a monster next to a DVD. Nevertheless, in the 1980s, the LaserDisc was very high tech.
References in periodicals archive ?
While stressing that there is room for all, the executive said true home theater's basic component are a largescreen television, a hi-fi stereo source - a hi-fi VCR or laserdisk player, or stereo signal from cable or satellite system - and right, left and center channel speakers with a Dolby surround sound decoder.
These presentations might be videotapes, laserdisk images, KC Discover graphs, computer simulations, or live chemical demonstrations.
LP Interviews Chris Pooley of SilverPlatter: New Products, New Software, and a Network," Laserdisk Professional (March 1989): 17.
published The Laserdisk Professional six times during its first year and emphasized practical evaluations and reviews.
Offering the highest digital video playback quality available, NetStream 2 plays streaming video on VGA displays and television sets with better quality than cable television, VHS tape, or laserdisk.
Interest in the technology is sufficient to support two publications specifically designed for the librarian, including CD-ROM Librarian (monthly) and Laserdisk Professional (bi-monthly).
Williams Learning Network (WLN) offers CD-ROM and interactive video laserdisk multimedia training courseware which combines full motion video, high resolution 3-D graphics and animation, interactive exercises and digital audio to create true multimedia learning programs.
Its availability is due to the power of today's microprocessors, a maturing laserdisk technology, and the recent industry-wide adoption CD-ROM standards.
MPEG-2 video compression allows several hours of video to be stored on one DVD' CD, rendering today's laserdisk players obsolete and cutting video disk costs.
This module also allows for dual video windows from independent or similar video sources and video in capabilities to view live video from NTSC or PAL sources such as camcorders, VCRs and laserdisk players.
This module also features dual video windows and "video in" capabilities to view live video from NTSC or PAL sources like camcorders, VCRs and laserdisk players.
which produces the laserdisks used by Taylor for his lessons.