[ToC]

 

BLOCK DIAGRAM OF A COLOR RECEIVER THAT USES RGB MATRIXING

Robert G. Middleton, Using Scopes in Color TV, Howard W. Sams & The Bobbs-Merrill Companies, NY, 1969

Next, when RGB matrixing is completed in the chroma demodulator circuits [Fig. 6-13, right], the subcarrier voltages are injected with the red, blue, and green phases, as shown in Fig. 6-14B. We will find that when a fully saturated red signal is being reproduced, the red channel drives the red gun in the color picture tube to full output. The red signal has components on the blue and green axes with polarities that cause the blue and green channels to drive the blue and green guns to cutoff. Thus, although the end result is the same, the RGB matrix system operates on the primary color axes. The matrix waveforms are somewhat different from those found in the systems discussed.