A white balance adjusting system for a color television system has three CRTs for projecting beams of three primary colors, and a color control circut for controlling outputs of the three CRTs. Three sensors are provided adjacent each CRT for detecting quantity of each color light. A memory stores three...http://www.google.com.au/patents/US5181103?utm_source=gb-gplus-sharePatent US5181103 - White balance adjusting system for a color television system
