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TRIAX DVB 75 SI
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OpenTV is the name of the operating system of the receiver (also
known as its API). Consequently, the DVB 75SI enables you to fully
utilise all channels that broadcast interactive services based on the
OpenTV system (e.g. ARD, ZDF, RTL and the Viasat channels -
subscription dependant).
Interactive
means that in addition to your normal role as a passive
television viewer you'll be able to actually take part in the
programme. When and if the transmission is prepared for it, you will
be able to use your remote control to e.g. change camera view,
participate in viewer polls, get more background information, browse
through news, check the programme guide, etc.
The system works by sending 'invisible' data in parallel with the
television transmission. This data is called the
interactive services
.
When your DVB 75SI receives an interactive service it will load it into
the receiver and execute it. This is very much similar to loading and
executing a program on a PC. When the service is started it will take
over the control of the receiver and it may take over the screen as
well (using pictures, graphics and texts). "APPL" will be displayed on
the front panel. As normal, you may control the receiver with the
remote control. You can abort a service using the
[exit]
button, just
as a change of channel using the
[P+]
or
[P-]
buttons will abort a
running interactive application and the receiver will return to normal
television mode.
If the interactive application requires that information about your
choices is sent back to the programme provider, your DVB 75SI
automatically uses the built-in modem. The modem sends and
receives the required information via your telephone connection.
This way you may participate in direct television polls or order a
movie. The modem is often referred to as the 'return channel' of the
receiver.
To receive and execute interactive services is normally free of
charge, but access to them may be subject to subscription status.
Use of the return channel is normally charged for as a normal
telephone conversation.
The DVB 75SI requires a normal telephone connection. If you have
an ISDN connection, the DVB 75SI must be connected via an A/B
output (normally available via an ISDN modem or a T/A adapter). If
you do not have a normal telephone connection available, you
cannot use the interactive services that require a return channel.
Your DVB 75SI can easily be set to ignore all interactive services in
case you temporarily only wish to watch normal television.
NB: The above
trademarks are
registered
trademarks of the
respective
companies.