| 摘要 |
An information server for use with an information distribution system including a client having a communication control section for making a communication through a network, a data holding section for holding data offered from said information server through said network, a portable large capacity data retaining medium, a data retaining medium control section for controlling said data retaining medium, and a control section for controlling said communication control section, said holding section and said data retaining medium control section, said information server comprising: a communication control section for making a communication through said network; a data production section for producing and obtaining data to be offered from said information server; and a control section for controlling said second-mentioned communication control section and said data production section, characterized in that when providing the information through said network to said client, said information server is arranged to further provide data including control information for using data existing in said data retaining medium of said client in accordance with a state of said data retaining medium control section. <IMAGE>
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