DATA MULTIPLEXER, PROGRAM DISTRIBUTION SYSTEM, PROGRAM TRANSMISSION SYSTEM, TOLL BROADCAST SYSTEM, PROGRAM TRANSMISSION METHOD, LIMITED RECEIVING SYSTEM, AND DATA RECEIVER

摘要

A data multiplexer, a program distribution system, a program transmission system, a toll broadcast system, a program transmission method, a limited receiving system, and a data receiver for transmitting transport stream packets of program data comprising a plurality of data elements having a transport stream packet structure, wherein a viewer can make a reception contract for each data element by generating a scramble key Ks corresponding to one or more data elements out of the data elements constituting one program and performing scrambling for each data element.