Television has been around commercially since the 1930s and the development of TV standards has always been fragmented. In 1990, a major milestone was achieved in the standardisation of HDTV through the ITU-R Rec BT.709. This recommendation represented the first single worldwide TV standard. Last year, ITU duplicated this feat by standardising the next generation of HDTV, known as Ultra-HDTV (UHDTV), via ITU-R Rec BT.2020.