1967.

Gregg worked at Mincom with experienced television videotape engineers Wayne Johnson and Dean De Moss. The three men subsequently filed patents to cover a disc-recording system, a way to duplicate discs, and reproducing TV signals from photographic discs. When Mincom contracted Stanford's SRI to further the research, Gregg left and formed his own company, Gauss Electrophysics.

In 1968, the Gregg and Gauss patents were purchased by MCA (Music Corporation of America),

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