Georges Valensi
M. Georges Valensi (1889–1980) was a French telecommunications engineer who, in 1938, invented and patented a method of transmitting color images via luma and chrominance so that they could be received on both color and black & white television sets.[1][2] Rival color television methods, which had been in development since the 1920s, were incompatible with monochrome televisions.
Valensi was an official of CCIF serving first as Secretary-General (1923–1948) and then as Director (1949–1956).[3]
All current widely deployed color television broadcast standards – NTSC, SECAM, PAL and today's digital standards, and importantly digital image data compression – implement some form of his idea of reducing a signal to a separate luminance with chrominance encoded separately. The original patents expired in 1962.
References
[edit]- ^ FR patent 841335, Valensi, Georges, "Procédé de télévision en couleurs", published 1939-05-17, issued 1939-02-06
- ^ US patent US2375966A, Valensi, Georges, "System of television in colors", published 1945-05-15
- ^ "Past and Present Senior Officials". International Telecommunication Union. hdl:11.1004/020.2000/s.048.
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