| 摘要 |
<p>An information service system which comprises a center for providing information and a terminal for receiving the information from the center. The terminal includes first memory means holding predetermined information, means for generating a request signal for requesting transmission of updated or additional information in connection with the predetermined information, transmission means, reception means, second memory means for storing the updated or additional information received, and reproduction means for reproducing the information stored in the first and second memory means. The center includes memory means for storing the updated or additional information to be supplied to the terminal, reception means, information retrieving means for searching the memory means on the basis of the request signal and acquiring the updated or additional information, and transmission means.</p> |
