by slasherindex | Jan 1, 1968
After having purchased optical disc patents from David Paul Greg, MCA begins development on a videodisc format (later to become laserdisc).
by slasherindex | Jan 1, 1964
RCA begins research and development on a videodisc (later to become CED).
by slasherindex | Jan 1, 1958
David Paul Gregg invents an optical disk for recording video while working at the electronics engineering company, Westrex (a subsidiary of Western Electric). He patents his designs in 1961 and 1969.