Services and navigation in satellite ISDM

ISDB (Integrated Services Digital Broadcasting) is a total digital broadcasting system, which can provide versatile services on the basis of digital transmission technology. Examples of promising ISDB services are HDTV (high definition television), a variety of multimedia information and indexes. These services are transmitted using digital signals constructed with the MPEG-2 multiplexing scheme. ISTV (Integrated Services Television) has been developed as an ISDB receiver and experiments have been carried out to investigate services and suitable navigation functions of ISDB receivers. This paper describes the basic concepts of ISDB and ISTV, then discusses services and navigation in ISDB. A menu display function and an EPG display function are powerful navigation tools in ISTV. Examples of ISTV navigation are shown, and a theme for further study is reported.