ELECTRONIC BOOK SYSTEM, ELECTRONIC BOOK SERVER, BOOK DATA PROVIDING METHOD, BOOK DATA PROVIDING PROGRAM AND BOOK DATA PROVIDING PROGRAM STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide an electronic book system further superior in convenience in use without compelling troublesome operation to user. SOLUTION: An electronic book 2 acquires the download right of book data. An electronic book server 3 forms a book-buyer corresponding table 38 for making user ID of the electronic book 2 correspond to a book data ID code of the book data to which the download right is imparted. When receiving a download request from the electronic book 2, in the case where the fact of the document data of preacquiring the download right has been able to be confirmed on the basis of the book/buyer corresponding table 38, the data is transmitted to the electronic book 2 by a predetermined data quantity. The electronic book 2 acquires the download right of the book data, and since the book data equivalent to a minimum data quantity can be acquired anytime and anywhere only by requiring download thereafter, it is not necessarily to hold the book data by a memory of large capacity so that the book data can be acquired and displayed only when necessary.