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Beside the normal services provided by the current telephone and cable
services, Interactive TV will provide a variety of new services
to homes, such as:
- video-on-demand
- home shopping, banking
- interactive single/multiple player games
- interactive entertainment
- digital multimedia libraries
- electronic newspapers, magazines, yellow pages, etc.
The MHEG standard (Chapter 8) has been explicitly
designed with this in mind.
The are a few delivery mechanism available for the medium:
Telephone Network:
- Advantage: High availability, security. Good support for
interactive/two way traffic
- Disadvantage: Low band width
Cable Network:
- Analog video down the
wire
- Advantage: High band width
- Disadvantage: Little infrastructure for long-distance, low security,
harder for two way traffic (Fig. 13.4).
Cable Network
Dave Marshall
10/4/2001