| 摘要 |
PURPOSE:To retrieve the offered information of plural transmitting main body, and to collect a desired program without depending on the time or a channel number by informing a retrieved result at the time of a retrieving request from a receiving main body. CONSTITUTION:At the time of establishing or changing individual program information, each transmitter 11-13 informs the program information to a communication network 2 by using a D channel/control plane, thereby a transmitting main body request processing part 23 holds the latest program information in a program information holding part 21. When a receiving main body 3 requests the retrieval of the program information, a receiving main body request processing part 22 retrieves the information stored in the program information holding part 21, and informs the retrieved result (latest program information) to the receiver 3. Then, when the receiving main body 3 requests the registration of the program identification code and priority order of the desired program to the communication network 2, the receiving main body request processing part 22 holds the registered content in a receiving main body information holding part 25. |
