ITU-T J.230 PDF

The incorporation of companion mobile devices, also known as second screen devices, into the experience of watching television (TV) is a recent and rapidly evolving trend. The integration of these companion devices with digital cable set top box (STB) or TV terminals support several scenarios based on content sharing, synchronization, user interaction and customized presentation. This integration also offers opportunities for the inclusion of intuitive and convenient user interfaces and additional areas for the presentation of information.

This Recommendation defines high-level requirements for functionalities of platforms consisting of digital cable television (CATV) reception equipment and mobile second screen devices.