<P> HDTV technology was introduced in the United States in the late 1980s and made official in 1993 by the Digital HDTV Grand Alliance , a group of television , electronic equipment , communications companies consisting of AT&T Bell Labs , General Instrument , Philips , Sarnoff , Thomson , Zenith and the Massachusetts Institute of Technology . Field testing of HDTV at 199 sites in the United States was completed August 14 , 1994 . The first public HDTV broadcast in the United States occurred on July 23 , 1996 when the Raleigh , North Carolina television station WRAL - HD began broadcasting from the existing tower of WRAL - TV southeast of Raleigh , winning a race to be first with the HD Model Station in Washington , D.C. , which began broadcasting July 31 , 1996 with the callsign WHD - TV , based out of the facilities of NBC owned and operated station WRC - TV . The American Advanced Television Systems Committee ( ATSC ) HDTV system had its public launch on October 29 , 1998 , during the live coverage of astronaut John Glenn 's return mission to space on board the Space Shuttle Discovery . The signal was transmitted coast - to - coast , and was seen by the public in science centers , and other public theaters specially equipped to receive and display the broadcast . The first HDTV logo was created by Washington , DC - based advertising firm Don Schaaf & Friends , Inc . </P>
<P> HDTV technology was introduced in the United States in the late 1980s and made official in 1993 by the Digital HDTV Grand Alliance , a group of television , electronic equipment , communications companies consisting of AT&T Bell Labs , General Instrument , Philips , Sarnoff , Thomson , Zenith and the Massachusetts Institute of Technology . Field testing of HDTV at 199 sites in the United States was completed August 14 , 1994 . The first public HDTV broadcast in the United States occurred on July 23 , 1996 when the Raleigh , North Carolina television station WRAL - HD began broadcasting from the existing tower of WRAL - TV southeast of Raleigh , winning a race to be first with the HD Model Station in Washington , D.C. , which began broadcasting July 31 , 1996 with the callsign WHD - TV , based out of the facilities of NBC owned and operated station WRC - TV . The American Advanced Television Systems Committee ( ATSC ) HDTV system had its public launch on October 29 , 1998 , during the live coverage of astronaut John Glenn 's return mission to space on board the Space Shuttle Discovery . The signal was transmitted coast - to - coast , and was seen by the public in science centers , and other public theaters specially equipped to receive and display the broadcast . The first HDTV logo was created by Washington , DC - based advertising firm Don Schaaf & Friends , Inc . </P>
when was the first high definition tv made
when was the first high definition tv made
1993
1993