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| | Video: Laserdisc Introduction |
 | | A laserdisc is a play only, 12-inch (typical, there is also a 8-inch, known as a laserdisc single) diameter double-sided optical disc capable of 425 lines of NTSC video resolution used for playing back video and sound from a player which output to a television. |
 | | LaserDisc was invented by David Paul Gregg in 1958, patented in 1961 and 1969, and first demonstrated by Philips and MCA (Music Corporation of America) in 1972. |
 | | In the years before DVD, laserdisc was the definitive collector's medium for high resolution video, producing a tremendous volume of output (estimates say approximately 15,000 titles) and some of the finest archive editions of classic movies, many of which may never be reproduced on DVD due to rights issues. |
| www.geocities.com /columbiaisa/video_laserdisc_intro.htm (2453 words) |
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