The New Digital Television and the Interactivity in its Multimedia Applications - Finding the Interactivity using a Low Cost Solution

The new interactive digital television, based on transmission standards like DVB-T, offers an interesting variety of services to both producers and consumers. This technology requires special decoders (STB’s), which implement an intermediary software layer (MHP) that is able to execute applications. In order to achieve the interactivity of these applications, STB’s must have what is known as return channel. To implement all this theoretical content we have created a scenario for interactive MHP applications using the decoder Strong SRT 5510, trying to show that it is possible to build low cost solutions. With this infrastructure, UEX-TVi has been developed. Students at university can use it to access to the topics of every subject, make test and quizzes, and see Web Pages on TV. The potential of the iTV is clearly