DSM-CC Standard

International Standards Organization released the ``Digital Storage Media Command and Control (DSM-CC)'' standard [24] in 1996. This standard originally aims to provide for the client/server operations such as video control (backward, pause, etc.), video transmission, and video service discovery. In 1998, this standard was extended and became Part 6 of the current MPEG-2 standard. DSM-CC itself is not developed for datacast, but some parts of DSM-CC, e.g., the Data Download Protocol, DSM-CC sections (a packet encapsulation on top of the PES), and the basic scheme of its service discovery, are adopted by both ATSC and DVB datacast standards that are described subsequently.