Electronic-book display processing program and electronic-book system

An electronic-book display processing program for allowing a server device connected to a terminal device through a communication network, which has a display portion displaying a document of an electronic book which has the same content as a paper book based on electronic book data including document data of a reflowable format, to control the content of the electronic book to be displayed on the display portion, which allows the server device to execute:

• a passage specifying function which extracts part of the electronic book data including data corresponding to a passage written in a page of the paper book corresponding to a page number based on the page number of the paper book designated by the user through an operating portion of the terminal device from a storage unit storing the electronic book data so as to be associated with page numbers of the paper book,
• a page-number specifying function which specifies a page number of a page of the paper book in which at least part of display information is written from the electronic book data based on the display information of the electronic book displayed on the display portion, and
• a display control function which displays the passage on the display portion based on the electronic book data,
• wherein a passage corresponding to part of the extracted electronic book data is displayed on the display portion and the specified page number is displayed on the display portion in the display control function.

An electronic-book system including a terminal device having a display means for displaying a document of an electronic book which has the same content as a paper book based on electronic book data including document data of a reflowable format and a server device connected to the terminal device through a communication network, comprising:

• a storage means for storing the electronic book data so as to be associated with page numbers of the paper book,
• a passage specifying means for extracting part of the electronic book data including data corresponding to a passage written in a page of the paper book corresponding to a page number based on the page number of the paper book designated by the user from the storage means through an operating means of the terminal device,
• a page-number specifying means for specifying a page number of a page of the paper book in which at least part of display information is written from the electronic book data based on the display information of the electronic book displayed on the display means, and
• a display control means for displaying the document on the display means based on the electronic book data,
• wherein the display control means displays the passage corresponding to part of the extracted electronic book data on the display means and displays the specified page number on the display means.