Originally Posted by jr_tech
Very cool! thanks for posting. Two color looks better than I expected, but still might have been pretty hard to sell, even in the mid 60s. I looks as if the colors shown are basically "I axis" only, which could have simplified the circuitry somewhat. Was a 2 color system used in some countries, in the "early days" ?
Two-color TV systems never went into use, although they were proposed. A Mexican inventor proposed a two-color system for Mexico:
Two color film, however, was used for a while - in one early form of Technicolor; also some two-color cartoons by others than Disney (who had three years of exclusive rights for use of three-color Technicolor in cartoons).