Comparative studies of data broadcasting

Data broadcasting promises to be a very significant component in the delive ry of digital television services. Both DVB and ATSC have proposed standard s for data broadcasting that have commonalities and differences, as well as advantages and disadvantages. The third standard player is the internet co mmunity. Although it has contributed to some degree to the development of D VB and ATSC standards, it has a different view and approach to data broadca sting This paper gives an overview of some emerging standards for DVB, ATSC , and the internet by examining differences between them, as well as discus sing the issues related to format conversion and simultaneous broadcasting.