ELECTRONIC BOOK READING DEVICE, ELECTRONIC BOOK DATA CREATION DEVICE, ELECTRONIC BOOK READING METHOD, ELECTRONIC BOOK DATA CREATION METHOD, ELECTRONIC BOOK SYSTEM, DATA STRUCTURE OF ELECTRONIC BOOK, PROGRAM, AND RECORDING MEDIUM THEREOF

摘要

A terminal device according to the present invention displays an electronic book obtained by digitizing a book in which a plurality of articles appeared on a plurality of pages. Specifically, the terminal device according to the present invention is capable of switching the display from the state in which image data indicating a page is displayed on a screen into the state in which text data indicating articles appeared on the page is displayed on an article basis.