The high efficiency of information transmission achieved by compression technologies also enables multi-component services: broadcasts of three standard-image-quality channels over a single channel.

"NHK plans to offer a range of broadcast services from fiscal year 2004. For example, we plan to provide parallel broadcasts of a children's program and a regular program for adults in the same time slot. Broadcasts of baseball games that go into extra innings will continue on a sub-channel, while the regular program is broadcasting from the scheduled time on the main channel." (Mr. Ikezawa, NHK)

Another feature of digital broadcasts is data broadcasting services that add diverse functions such as electronic TV listings (EPG^*3). These functions gives TV viewers access to program information, including profiles of performers featured in the program, or to news and weather forecasts. Interactive services are also being considered. For example, using the remote control, viewers would be able to participate in quiz shows or purchase products featured on TV programs or in ads on commercial TV stations.
Unlike current BS digital broadcasts, which use broadcasting satellites for nationwide services, digitalized terrestrial broadcasts are transmitted from local stations. This means digital broadcasts can carry regional news, local weather information, resort information, and emergency evacuation alerts, all information with a direct connection to the everyday lives of local residents. Digital broadcasts will allow TV to broaden its role beyond an entertainment appliance, and serve as an information tool that can be tailored to the specific needs of individual viewers.

Also under research and development is server-based broadcasting. "Various applications are currently being explored. For example, combining a home server equipped with a built-in hard disk and program-related information (meta-data) provided by TV stations will enable viewing of highlight scenes in digest format. We're also examining linking on-air TV programs to Internet content." (Mr. Ikezawa, NHK)