ITU-T Study Group 9 - Broadband cable and TV
ITU-T Study Group 9 (SG9) carries out studies on the use of telecommunication systems in the distribution of television and sound programs supporting advanced capabilities such as ultra-high definition and 3D TV. This work also covers the use of cable and hybrid networks – primarily designed for the distribution of television and sound programs to the home – as integrated broadband networks to provide interactive voice, video and data services, including Internet access.
When meeting at ITU headquarters in Geneva, SG9 holds its meetings in collocation with ITU-T Study Group 16 (Multimedia). An exception to this rule occurs when SG9 holds meetings in collocation with ITU-T Study Group 12 (Performance, QoS and QoE), the group with which SG9 coordinates its work on quality assessment.
SG9 achievements include international standards (ITU-T Recommendations) on voice, video and data IP applications over cable TV networks (IPCablecom); interactive cable television service; high-speed data services; and IP-based television and video-on-demand distribution (IPTV service).
SG9 has developed ITU-T Recommendations on next-generation cable modems which act as universal integrated receivers or set-top boxes for home networking. The cable modems link all types of in-premises electronic devices for applications such as entertainment, telecommunication, information technology, home-automation systems and telemetry (remote control and monitoring systems).
To stimulate the worldwide exchange of interactive TV services, SG9 has also developed a harmonized set of interactive content formats and common application programming interfaces (APIs). These standardized content formats and APIs are capable of providing the variety of functionalities required by the advanced interactive applications to be delivered over TV networks to end-users’ homes.
Furthermore, SG9 is looking at Large Screen Digital Imagery (LSDI) which is described as an optimal approach to the presentation of super-high definition television (SHDTV) programs to a collective audience on cinema-like screens in a cinema-like environment.