"Valensi" redirects here. For the guitarist of The Strokes

The Strokes

The Strokes are an American indie rock band formed in 1999 in New York City. Consisting of Julian Casablancas , Nick Valensi , Albert Hammond, Jr. , Nikolai Fraiture and Fabrizio Moretti ....

, see Nick Valensi

Georges Valensi was a French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 telecommunications engineer who, in 1938, invented and patent

Patent

A patent is a form of intellectual property. It consists of a set of exclusive rights granted by a sovereign state to an inventor or their assignee for a limited period of time in exchange for the public disclosure of an invention....

ed a method of transmitting color images so that they could be received on both color and black & white television

Television

Television is a telecommunication medium for transmitting and receiving moving images that can be monochrome or colored, with accompanying sound...

 sets.

Rival colour television methods, which had been in development since the 1920s, were incompatible with monochrome televisions.

All current widely deployed colour television standards – NTSC

NTSC

NTSC, named for the National Television System Committee, is the analog television system that is used in most of North America, most of South America , Burma, South Korea, Taiwan, Japan, the Philippines, and some Pacific island nations and territories .Most countries using the NTSC standard, as...

, SÉCAM

SECAM

SECAM, also written SÉCAM , is an analog color television system first used in France....

, PAL

PAL

PAL, short for Phase Alternating Line, is an analogue television colour encoding system used in broadcast television systems in many countries. Other common analogue television systems are NTSC and SECAM. This page primarily discusses the PAL colour encoding system...

 and today's digital standards – implement his idea of transmitting a signal composed of separate luminance and chrominance

Chrominance

Chrominance is the signal used in video systems to convey the color information of the picture, separately from the accompanying luma signal . Chrominance is usually represented as two color-difference components: U = B' − Y' and V = R' − Y'...

. Because his invention pre-dated the actual introduction of colour television by so long, his patent was exceptionally extended to 1971.