In computing, sound reproduction, and video, an optical disc is flat, circular, usually
polycarbonate disc whereon data is stored. This data is generally accessed when a special material
on the disc (often aluminum) is illuminated with a laser diode.
David Paul Gregg developed an analog optical disk for recording video and patented it in
1961 and 1969 (U.S. patent 3430966). Of special interest is U.S. 4,893,297, first filed in 1968 and
issued in 1990, so that it will be a source of royalty income for Pioneer’s DVA until 2007. It
encompasses systems such as CD, DVD, and even Blu-ray Disc. Gregg's company, Gauss
Electro physics, was acquired, along with Gregg's patents, by MCA in the early 1960s.
Parallel, and probably inspired by the developments in the U.S., a small group of physicists
started their first optical videodisc experiments at Philips Research in Eindhoven, The Netherlands
in 1969. In 1975, Philips and MCA decided to join forces. In 1978, much too late, the long waited
laser disc was introduced in Atlanta. MCA delivered the discs and Philips the players. It turned out
to be a total technical and commercial failure, and quite soon the Philips/MCA cooperation came to
an end. In Japan and the U.S., Pioneer has been successful with the videodisc till the advent of
DVD.
Philips and Sony formed a consortium in 1979 to develop a digital audio disc, which
resulted in the very successful introduction of the compact disc in 1983.
The promotion of standardized optical storage is undertaken by the Optical Storage
Technology Association (OSTA).
The information on an optical disc is stored sequentially on a continuous spiral track from
the innermost track to the outermost track.
polycarbonate disc whereon data is stored. This data is generally accessed when a special material
on the disc (often aluminum) is illuminated with a laser diode.
David Paul Gregg developed an analog optical disk for recording video and patented it in
1961 and 1969 (U.S. patent 3430966). Of special interest is U.S. 4,893,297, first filed in 1968 and
issued in 1990, so that it will be a source of royalty income for Pioneer’s DVA until 2007. It
encompasses systems such as CD, DVD, and even Blu-ray Disc. Gregg's company, Gauss
Electro physics, was acquired, along with Gregg's patents, by MCA in the early 1960s.
Parallel, and probably inspired by the developments in the U.S., a small group of physicists
started their first optical videodisc experiments at Philips Research in Eindhoven, The Netherlands
in 1969. In 1975, Philips and MCA decided to join forces. In 1978, much too late, the long waited
laser disc was introduced in Atlanta. MCA delivered the discs and Philips the players. It turned out
to be a total technical and commercial failure, and quite soon the Philips/MCA cooperation came to
an end. In Japan and the U.S., Pioneer has been successful with the videodisc till the advent of
DVD.
Philips and Sony formed a consortium in 1979 to develop a digital audio disc, which
resulted in the very successful introduction of the compact disc in 1983.
The promotion of standardized optical storage is undertaken by the Optical Storage
Technology Association (OSTA).
The information on an optical disc is stored sequentially on a continuous spiral track from
the innermost track to the outermost track.
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