| 摘要 |
PROBLEM TO BE SOLVED: To freely perform close examination of an electronic book, and to facilitate purchase processing thereof. SOLUTION: On the fourth line which is a header part of electronic book data, '<;Shidokupage>; 200 page <;/Shidokupage>;' is described, to thereby show that 200 pages are readable pages. On the fifth line, '<;Shidoku 1 time>; 15 min <;/Shidoku 1 time>;' is described, to thereby show that the readable time for one-time trial read is 15 minutes. On the sixth line, '<Shidoku total time>; 45 min <;/Shidoku total time>;' is described, to thereby show the total readable time of the electronic book is 45 minutes. Trial read display on a user terminal is controlled based on information on the readable pages, the one-time readable time and the total readable time. |
