<Tr> <Td> </Td> <Td> This article possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (July 2009) (Learn how and when to remove this template message) </Td> </Tr> <P> The first recorded historical use of an optical disc was in 1884 when Alexander Graham Bell, Chichester Bell and Charles Sumner Tainter recorded sound on a glass disc using a beam of light . </P> <P> An early optical disc system existed in 1935, named Lichttonorgel . </P> <P> An early analog optical disc used for video recording was invented by David Paul Gregg in 1958 and patented in the US in 1961 and 1969 . This form of optical disc was a very early form of the DVD (U.S. Patent 3,430,966). It is of special interest that U.S. Patent 4,893,297, filed 1989, issued 1990, generated royalty income for Pioneer Corporation's DVA until 2007--then encompassing the CD, DVD, and Blu - ray systems . In the early 1960s, the Music Corporation of America bought Gregg's patents and his company, Gauss Electrophysics . </P>

The development of cds and dvds that significantly reduced