Optical disc of light. An early optical disc system existed in 1935, named . 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 (). It is of special interest that , 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. American inventor James
Who Wants to Be a Millionaire? (Australian game show) his first appearance of the show (similar to that of British cheat Charles Ingram); a suggestion Flood himself was unaware of until his jackpot win in the following episode. This investigation by "A Current Affair" helped to boost the ratings for the episode of his top prize win; however, after this, Flood was cleared by the Nine Network of any wrongdoing. On 27 October 2004, a "Who Wants to Be a Millionaire?" interactive multiplayer DVD game was released. Also a picture edition was also released offering the choice of either adult and junior questions. Who Wants to Be a Millionaire?