In Japan extensive efforts have been made for the practical application of the 1125/60 HDTV system for broadcasting and non-broadcasting uses. In this paper recent progress in the 1120/60 HDTV is reviewed focusing on the studio standard and the developments of HDTV equipment such as very high sensitivity pick-up tubes, HDTV CCD devices and a 33-inch flat panel plasma display. Then the transmission of HDTV signals via broadcasting satellite, communications satellite and CATV are described in addition to the digital transmission of HDTV signals. Finally some examples of non-broad-cast application of the 1125/60 HDTV are briefly discussed.