Compact disc
Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982. The format was originally developed to store and play only sound recordings (CD-DA) but was later adapted for storage of data (CD-ROM). Several other formats were further derived from these, including write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Disc (VCD), Super Video Compact Disc (SVCD), Photo CD, PictureCD, CD-i, and Enhanced Music CD. The first commercially available audio CD player, the Sony CDP-101, was released October 1982 in Japan.
David Paul Gregg
In 1968 the Gregg and Gauss patents were purchased by MCA (Music Corporation of America), which helped develop the technology further. His designs and patents paved the way for the Laserdisc, which helped with the creation of the DVD, compact discs, and MiniDisc. In 1963 he also invented a video disk camera which could store several minutes worth of images onto an optical video disk. There was no patent files for the camera and only little is known about it. Dr. Gregg died in Culver City, California in November 2001 at the age of 78.