DIGITAL PAY BROADCAST SYSTEM, DIGITAL PAY BROADCASTING METHOD, BROADCAST STATION, CHARGE MANAGING CENTER AND BROADCAST RECEIVER

摘要

PROBLEM TO BE SOLVED: To present a pay broadcast program to broadcast receivers of only valid users subjected to a charge, without a cryptographic process.;SOLUTION: A system is broadcasting program data of a pay broadcast and only program IDs accompanying with the program data from a broadcast station BS to broadcast receivers RS1-RSn via a broadcast satellite ST. It previously registers program IDs of pay broadcast programs users desire in their own broadcast receivers RS1-RSn, decides whether a user is a valid user with a certification to view the pay broadcast programs, based on the registered program ID, and permits the reproduction of a desired pay broadcast program, if the user is decided to be valid.;COPYRIGHT: (C)2004,JPO