For WorldWide TV to work the computer connected to the Set Top Box (der Server "at home") must
be visible in the Internet, i.e. its IP address must be known (i.e. via DynDNS). The following picture illustrates how
bitcontrol® WorldWide TV works:
On the Server, the bitcontrol® HDTV Digital TV Link is running, taking the data stream from the Set Top Box and
passing it on to the bitcontrol® MPEG-2 Decoder. In contrast to video streaming in a local network the
the data stream is compressed considerably in WWTV (i.e. MPEG-4) in order to reduce necessary bandwidth.
This is done by the Microsoft® WMV Encoder.
On the computer that is supposed to receive and display the TV signal
(the Client, laptop "in the holiday hotel") the Media player is running as usual and receives, decodes and displays this stream.
The IP address of the Server "at home" is given as source address, in analogy to the bitcontrol® Digital TV Link.
In order to switch the channel one would use a browser-based application that
connects to the bitcontrol® WWTV Access Server, which is running on the Server "at home" also. This program in turn
actually controls the Set Top Box. In a future version of bitcontrol® WWTV this functionality will be provided
by On Screen Display Technology.
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