Commercial broadcast satellite (BS) digital broadcasting services have been operating in Japan since December 2000. In addition to digital BS broadcasting, 110 deg communications satellite (CS110 deg) digital broadcasting commences in 2002 and digital terrestrial broadcasting is scheduled for commercial service in 2003. This paper discusses some of the supporting technologies in this field such as multichannel services, high-definition television, and interactive television. These technologies are key factors for innovating the business model of the conventional broadcasting industry and realizing the introduction of many benefits not only for TV audiences, but also for broadcasters and advertising companies. The same trends can be seen in the Internet and cellular phone business areas. Digital services are provided through a combination of contents and applications. Digital broadcasting will be the first example of such trends.
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