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 standards – NTSC, SECAM, PAL and today's digital standards – implement his idea of transmitting a signal composed of separate luminance and chrominance. Because his invention pre-dated the actual introduction of color television by so long, his patent was exceptionally extended to 1971.

References

  1. ↑ FR patent 841335, Valensi, Georges, "Procédé de télévision en couleurs", published 1939-05-17, issued 1939-02-06
  2. ↑ US patent 2375966, Valensi, Georges, "System of television in colors", published 1945-05-15
  3. ↑ "Past and Present Senior Officials". International Telecommunication Union. hdl:11.1004/020.2000/s.048.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.