Performance of multimedia broadcasting through ISDB transmissionsystem

Multimedia broadcasting has the benefits of versatile information representation, intelligent viewing environments, and economical systems. Integrated Services Digital Broadcasting (ISDB) presents a concept for future digital broadcasting systems. Full-scale multimedia broadcasting services can be realized by ISDB. There are two aspects in multimedia broadcasting from the viewpoint of ISDB. One is “transmission multimedia” and another is “presentation multimedia”. The former means that ISDB provides services by exploiting the characteristics of various types of broadcast channels. It also integrates all broadcast networks and is interoperable with communications and package media. The latter means that ISDB can flexibly combine and send various types of representation media that most appropriately convey the information. Multimedia broadcasting by ISDB is expected to achieve interactive viewing and to raise individual viewer satisfaction. ISDB will also make it possible to set up multiple small-scale broadcast stations and to provide a many-to-many information linking environment for transmitting information between an unspecified number of individuals