Chromatron TV Color Processing Using Semiconductor Circuits

This paper presents a simple analysis of the chrominance and luminance signals required to drive the chromatron, single-gun, color television picture tube. Conversion from the NTSC signal to the required chromatron drive is explained mathematically and graphically. Two common methods of color decoding, the 1, 2, 4 and the chroma-gate systems are described and compared. Semiconductor circuits, developed for the decoder and associated signal processing, are described.