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videodisc
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videodisc
The Columbia Encyclopedia, Sixth Edition
videodisc or videodisk, disk used with a special player and television to reproduce both pictures and sound. A videodisc player cannot record television programs off the air for later playback, unlike a videocassette recorder (VCR) or recordable DVD (see digital versatile disc ). Videodiscs generally produce pictures that are clearer in detail and truer in color than those produced by VCR tapes, and they also offer better sound quality, but the introduction of the DVD led to their becoming obsolete. Two quite different videodisc systems were developed. One operates much like a record player , using a mechanical stylus that senses varying patterns of electrical capacitance imprinted in grooves on the disc surface. That format fell into disuse, becoming superseded by the laser disc system, which uses a laser to read a track cut in a spiral pattern on the inside surface of the disc. On a laser disc, video is recorded as an analog signal and the soundtrack is either an analog or, in later versions, a digital signal.
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The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
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Laser disc and CD-ROM: looking for a new video medium. (analysis and forecast for future of laser disc and CD-ROM industries)
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Laser discs make inroads in consumer market. (Laser Disc Association report)
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The number of converts to laser disc remains small, but is growing.(Originated from Orange County Register)
; ...for its superior picture and sound quality and for features that are unavailable...other home video format. It's the laser disc, which uses a beam of laser light...because of its superior picture and sound quality. The first laser-disc player...
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Putting DVD, laser disc to the test
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Florida schools to expand laser disc use.
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Columbia House opens laser disc club.
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On laser disc: The perfect format for a true epic.(Originated from Orange County Register)
; ...wide-screen version of ``Braveheart'' on laser disc. However, those same problems will creep up if you opt for the pan-and-scan laser-disc version of the film. (Why anyone would want a pan-and-scan laser disc of ``Braveheart'' I can't imagine. Statistics...
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Laser disc popularity growing
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On laser disc: Fiorentino tale seduces viewers.(Originated from Orange County Register)
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What laser video replicators should know about their clients, the IVD producers. (interactive videodisc) (The Business of Laser Disc)
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Related entries from encyclopedias, dictionaries, and thesauruses
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videodisc
...receiver. There are two major classes of videodiscs, magnetic and nonmagnetic. Magnetic videodiscs have an oxide-coated surface onto which...patterns in spiral tracks. Nonmagnetic videodiscs use either a mechanical recording system...
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videodisc
vid·e·o·disc / ˈvidēōˌdisk / (also vid·e·o·disk ) • n. a CD-ROM or other disk used to store visual images and sound.
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CBIV
CBIV computer-based interactive videodisc
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optical disk
...storage disks that are played or read using a laser . Optical disks include compact discs (CDs and CD-ROMs), laser discs (see videodisc ), and digital versatile discs (or digital video discs; DVDs and DVD-ROMs). WORM [ W rite O nce/ R ead M any] disks can be...
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laser disc
see videodisc .
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