| 摘要 |
PROBLEM TO BE SOLVED: To provide a broadcasting system capable of improving the security of information communication from a reception terminal to a center. SOLUTION: In this broadcasting system for transmitting data such as viewing history information 33 stored in security modules 3 and 30 from the reception terminal 2 to the centers 1 and 10, a communication protocol with the center 1 is held in the center information storage part 34 of the security module 3 and the reception terminal 2 only transfers the data between the security module 3 and the center 1. Since the reception terminal 2 is not required to recognize the protocol and the protocol can be made secret, the high security is secured. Also, in the case of changing the form of the data to be transferred and data contents, etc., by the addition of a new service or the like, coping is performed by the exchange of the security module. |
