The core of the digital terrestrial broadcasting, as well as satellite digital which started in December, 2000, is Hi-Vision. An HDTV image has five times more visual information than a conventional television picture, and 1,125 scanning lines in HDTV system give pictures their detailed realism. Also, a wide-screen format with a 16:9 aspect ratio provides a powerful viewing experience. HDTV also provides CD-quality sound and 5.1 surround sound broadcasting, which is capable of reproducing sounds with a realistic feeling of depth that gives listeners a heightened sense of involvement by using six-channel speaker system. NHK has delivered spectacular images from the Space Shuttle, the depth of the ocean, and the Antarctica. Almost 90% of NHK’s main channel (Digital General TV) is broadcast in HDTV.
[Read the rest of this entry...]