| 摘要 |
PURPOSE:To facilitate easy acquisition of desired information without being influenced by the skill of a user. CONSTITUTION:This system is constituted of a center CE as an information provider side and a terminal TE which is a user side terminal for receiving the provision of the information from the center CE. Then, a transmission antenna AT for transmitting antenna radio waves RF1 to a communication satellite SA is installed on the side of the center CE and on the other hand, retransmission radio waves RF2 are transmitted from the communication satellite SA to the terminal TE. Thus, a satellite broadcasting network as a first communication form for providing partial information from the side of the center CE to the side of the terminal TE is constructed. Also, a communication network for which the cable CA of ISDN or the like for instance is a medium is constructed between the center CE and the terminal TE and whole information specified on the side of the terminal TE is transmitted from the center CE to the terminal TE by a second communication form by a channel transmission form. |
