PORTABLE TERMINAL, DISTRIBUTION SERVER, PROVISION SERVER, SYSTEM AND METHOD FOR DISTRIBUTING ELECTRONIC BOOK

摘要

PROBLEM TO BE SOLVED: To enhance convenience in the case of using an electronic book by enabling the acquisition of the electronic book by every constitutional unit.;SOLUTION: This portable terminal 20 is provided with an electronic book coupon storage part 22, a book data reception part 24, an electronic book coupon reduction part 25, and a book data decryption part 26. The electronic book coupon storage part 22 stores an electronic book coupon to be used for acquisition of book data including a plurality of pieces of page data with a decryption key to be used for decryption of a plurality of pieces of the page data. The book data reception part 24 receives the book data from an electronic book provision server 30. The electronic book coupon reduction part 25 reduces an electronic value of an amount according to the page data the reading of which is requested from the electronic book coupon. The book data decryption part 26 decrypts the page data by every piece of the page data by using the decryption key in accordance with reduction of the electronic value.;COPYRIGHT: (C)2004,JPO