United States inventor (born in Hungary) who made the first TV broadcast in 1940 and invented the long-playing record in 1948 and pioneered video cassette recording (1906-1977)

Answer for the clue "United States inventor (born in Hungary) who made the first TV broadcast in 1940 and invented the long-playing record in 1948 and pioneered video cassette recording (1906-1977) ", 8 letters:
goldmark