IPTV

Internet Protocol Television (IPTV) has become a common denominator for systems where television and/or video signals are distributed to subscribers using Internet protocols. Often this is in parallel with the subscriber's Internet connection, supplied by a broadband operator using the same infrastructure and possibly bandwidth.

IPTV is not a protocol itself.

IPTV is expected to grow at a brisk pace in the coming few years as broadband is now available to more than 100 million households worldwide.

Source/More: http://en.wikipedia.org/wiki/Iptv