The Technical Hurdles Behind Color Television's Invention

The invention of color television was a complex engineering challenge, as explained in a video by Primal Space. The first television, created by Scottish inventor John Logie Baird in 1925, used a spinning disc with holes to transmit images in black-and-white. Baird demonstrated a color system in 1928, but it was impractical for large-scale use. The breakthrough came with the cathode ray tube (CRT) technology, which Japanese inventor Kenjiro Takayanagi had harnessed for black-and-white TV in 1926. The iconoscope, invented by Vladimir Zworykin in 1933, served as the world's first video camera, scanning images into electrical signals. The Radio Corporation of America (RCA) developed a color camera that filtered light through prisms to separate red, green, and blue signals. To broadcast to existing black-and-white sets, RCA encoded the color signals so they could be hidden within the standard signal, with color sets decoding them. The United States began transitioning to color TV in 1953, with over half the population owning color sets within two decades. France started in 1967, completing the transition by 1983. South Korea began regular color broadcasts in 1980, though American Forces Network, Japan, and North Korea had been available earlier. The first broadcast of The Wizard of Oz in 1956 demonstrated color TV's potential. The article is authored by Colin Marshall, based in Seoul, who writes on cities, language, and culture.