From the end user point of view every new technology is interesting when it offers a lot of new more quality services in comparison with existing technologies. DVB technology is not more the passive medium. It enhances an analog TV technology by a picture quality, data services and interactivity.
The DVB technology provides three basic (core) services:
However, except a TV program distribution the DVB technology also allows to distribute to users varied data services. These services can be divided into two groups: interactive and pseudo-interactive. In case of pseudo-interactive (or one-way interactive) services data for such services are transmitted via transmission channels along with TV channels and after decoding they are stored in a memory of the end user device (set-top-box). The user has options to select and browse information in a memory. In case of interactive (fully or two way interactive) services a return channel is used by the user to choose and control data services provided by operator. The return channel is realized by a separate transmission medium.
Among classic pseudo-interactive services we can include:
The interactive services cover: