System for automatic correction of the color balance between the primary signals of a color signal source

摘要

A system for correcting color balance of a color television picture to remove tinges of color caused by unbalance. Control signals for color correction are derived and stored from data available in those periods when luminosity is below a lower limit of about 7% or above an upper limit of about 95% and when chroma-saturation is below a prespecified level, for example 20%.