English-82
through HbbTV include traditional broad-
cast TV channels, catch-up services, video-
on-demand, EPG, interactive advertising,
personalisation, voting, games, social net-
working and other multimedia applications.
HbbTV applications are available on
channels where they are signalled by the
broadcaster (currently various channels
on Astra broadcast HbbTV applications).
The broadcaster marks one application
as “autostart” and this one is started by
the platform automatically. The autostart
applications are generally launched with a
small red button icon to notify the user that
there is an HbbTV application on that chan-
nel (The shape and the location of the red
button depends on the application). The
red button is displayed for some and then
may disappear. The user then should press
the red button to open the application page.
After the page is displayed the user can go
back to the initial red button icon state by
pressing the red button again. The user
can toggle between the red button icon
mode and full UI mode of the application
via pressing red button. It should be noted
that the red button switching capability is
provided by the application and some ap-
plication may behave differently.
Service with red button application (taken
from HbbTv specification)
If the user swicthes to another channel while
an HbbTv application is active (either in
red button icon mode or full UI mode), the
following scenarios can occur.
- The application can continue running.
- The application can be terminated.
- The application can be terminated and
another autostart red button application
can be launched.
HbbTv allows the applications to be re-
trieved both from broadband or broadcast.
The broadcaster may enable both ways or
one of them. If the platfrom does not have
an operational broadband connection, the
platform can still launch applications trans-
mitted on broadcast.
The autostart red button applications gen-
erally provide links to other applications.
An example of this is shown below. The
user then can switch to other applications
by using the links provided. The applica-
tions should provide a way to terminate
themselves, usually button 0 is used for this.
Figure a: Start bar application
NOTE:
You can enable or disable this fea-
ture from the More menu in System>Settings
menu..
