Monday, February 6, 2012
Digital terrestrial broadcasting in HDTV
The core of the digital terrestrial broadcasting, as well as satellite digital, which started in December 2000, the Hi-vision. Image HDTV has five times more visual information than the conventional television picture, and 1,125 scanning lines in HDTV system to give pictures of their detailed realism. The format of the widescreen aspect ratio of 16: 9 also provides strong experience. HDTV also provides healthy and 5.1 surround sound broadcasts CD-quality, which is able to reproduce the sound with a realistic sense of depth, which gives the listener an increased sense of involvement by using the 6 channel speaker system. NHK has brought spectacular images from the space shuttle, the depth of the ocean and the Antarctic. Nearly 90% of NHK's main channel (General Digital TV) is broadcast in HDTV.
Broadcast data
Broadcast data gives viewers access to information whenever they need it by simply pressing the buttons on the remote control. Viewers may require download detailed information in emergency situations, such as earthquakes and severe storms, and the related data, local weather forecasts, and sports scores. This feature will increase the detailed information of the service.
Interactive services
Interactive features allow viewers to actively participate in the television programmes from their living room. One can join the quiz as a competition and to join the competition as a juror by submitting responses and views through the TV screen. NHK is the most popular music program, "the Red and White of the year Song Festival" (aired on December 31) shall invite the audience to the screen songs as the jury.
Multichannel audio service
Digital broadcasting has a capacity of bandwidth to broadcast up to three different standard definition programs on a single channel. For example the air children's animation programme, program, language learning and cooking program, all at the same time on NHK educational TV channel.
Download pdf of digital terrestrial broadcasting in HDTV
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