Editing Analog television (section)

==== SECAM system ====
In the [[SECAM]] television system, U and V are transmitted on ''alternate'' lines, using simple [[frequency modulation]] of two different color subcarriers.

In some analog color CRT displays, starting in 1956, the brightness control signal ([[luminance]]) is fed to the [[cathode]] connections of the electron guns, and the color difference signals ([[chrominance]] signals) are fed to the control grids connections.  This simple CRT matrix mixing technique was replaced in later [[solid state (electronics)|solid state]] designs of signal processing with the original matrixing method used in the 1954 and 1955 color TV receivers.