Guillermo Gonzalez Camarena was fascinated with electronics from a young age and built his first television set at age 15 in 1932. He realized television images would be better in color and spent years working on a sequential color system using red, green, and blue fields. In 1940 at age 23, he obtained patents in Mexico and the US for his "tricolor sequential field system" for capturing and reproducing color images. However, his invention received little attention in Mexico, though it gained interest from US universities who wanted to buy his patent or have him continue his research abroad, which he declined to develop his invention in Mexico.