The Digital Fact Book - Quantel

IP over DVBThe delivery of IP data and services over DVB broadcast networks. Also referred to asdatacasting, this takes advantage of the very wideband data delivery systems designedfor the broadcast of digital television, to deliver IP-based data services – such as file transfers,multimedia, Internet and carousels, which may complement, or be instead of, TV.Due to DVB-T’s ability to provide reliable reception to mobile as well as fixed receivers,a new standard DVB-H has been added to send IP-style service to people on the move– typically to phones. For interactivity, a return path can be established by the phone.See also: IP Datacast Forum, Data carousel, IP over DVBIIPTVInternet Protocol Television is the use of the IP packetized data transport mechanismfor delivery of streamed realtime television signals across a network.IRDIntegrated Receiver Decoder. A device that has both a demodulator and a decoder(e.g. for MPEG-2) built in. This could be a digital television set or a digital set-top box.See also: IDTVISAIntegrated Server Architecture is a Quantel term for the technology used in its sQ serversto manage the contents of several separate servers simultaneously. ISA operates at twolevels one locks browse and full quality material together under a single ISA database,the other allows all material held on several sQ servers to be handled as if on a single server– effectively as if on a single database. This facilitates system scaling of users and storageby adding servers and makes possible the ZoneMagic operation where two separatedservers are kept in step.See also: NAS, SAN112