Georges Valensi

M. Georges Valensi 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. 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 and then as Director.
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.