David M. Rosen[1] (born January 22, 1930) is an American businessman and the co-founder of the Japanese video game company Sega.
[4] In 1957, Rosen Enterprises, Ltd. shifted its focus and pioneered the importation and operation of coin-op amusement machines popular in the United States, to Japan to meet the growing leisure market.
[6] Nihon Goraku Bussan, Ltd. used the brand name Sega (the name originates from SErvice GAmes Japan) for their jukeboxes and slot machines which were located on United States military bases for amusement purposes.
In 1978, Sega Enterprises acquired a distribution company, Essco Tdg., that was founded by Hayao Nakayama and an arcade game manufacturer, Gremlin Industries.
Having already moved his family to Los Angeles and not wanting to return to Japan full-time, Rosen declined the opportunity of solely purchasing the Japanese assets of Sega.
In March 1984, Rosen and Hayao Nakayama put together a buyout group led by Isao Okawa and purchased Sega's Japanese assets.