| 摘要 |
<p>A converter node 27 of an Internet Protocol Television (IPTV) Network 20 comprises a first port 32 for communicating with a receiver 23 (for example a set top box), and a second port 28 for communicating with a video headed end 25 (for example a source of IP Multicast traffic. The converter node also comprises a converting unit 31. In response to receiving, via the first port 32, a request from the receiver 23 to join an internet protocol multicast group (e.g. tune-in to an IPTV channel), the converting unit 31 of the converter node 27 is configured to convert IP Multicast traffic 29 received from the video headed end 25 via the second port 28 into IP Unicast traffic 33 (i.e. personalised traffic), which is forwarded to the receiver 23 via the first port 32.</p> |
