<P> The first official television broadcast began on January 3, 1954 by the RAI . </P> <P> Television broadcasting in Japan started in August 28, 1953, making the country one of the first in the world with an experimental television service . The first television tests were conducted as early as 1926 using a combined mechanical Nipkow disk and electronic Braun tube system, later switching to an all - electronic system in the 1935 using a domestically developed iconoscope system . In spite of that, because of the beginning of World War II in the Pacific region, this first full - fledged TV broadcast experimentation lasted only a few months . Regular television broadcasts would eventually start in 1953 . </P> <P> In 1979, NHK first developed a consumer high - definition television with a 5: 3 display aspect ratio . The system, known as Hi - Vision or MUSE after its Multiple sub-Nyquist sampling encoding for encoding the signal, required about twice the bandwidth of the existing NTSC system but provided about four times the resolution (1080i / 1125 lines). Satellite test broadcasts started in 1989, with regular testing starting in 1991 and regular broadcasting of BS - 9ch commenced on November 25, 1994, which featured commercial and NHK television programming . </P> <P> Sony first demonstrated a wideband analog high - definition television system HDTV capable video camera, monitor and video tape recorder (VTR) in April 1981 at an international meeting of television engineers in Algiers . The HDVS range was launched in April 1984, with the HDC - 100 camera, HDV - 100 video recorder and HDS - 100 video switcher all working in the 1125 - line component video format with interlaced video and a 5: 3 aspect ratio . </P>

When did tv come out to the public