Henri de France
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Henri Georges de France (7 September 1911 Paris – 29 April 1986 Paris) was a pioneering French television inventor. His inventions include the 819 line French standard and the SECAM color system. He was also apparently behind the HD-MAC high-definition standard.
On December 6, 1931, De France founded the Compagnie Générale de Télévision in Le Havre, making television sets with a vertical definition of 60 lines. In February 1932, De France made several transmissions over a distance of 7 km from the "Radio-Normandie" station in Fécamp. These signals were received by a few people located over 100 km away. In October 1932, he achieved a definition of 120 lines. In 1956, he patented the SECAM color television system. On October 1, 1967 at 2:15pm CET, la deuxième chaîne switched from black and white to color using SECAM.
De France is interred in Paris (cimetière du Montparnasse).
- Apparatus for determining a direction, US 2513849, issued 4 July 1950
- Television device for recording motion pictures thereof, US 2531031, issued 21 November 1950
- Amplifier system, US 2589542, issued 18 March 1952
- Communication system between two stations linked by television, US 2637022, issued 28 April 1953
- Television system, US 2700700, issued 25 January 1955
- Color television, US 2876278, issued 3 March 1959
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