大日本図書 新版たのしい理科３年 Copyright (c) 2014 Dainippon tosho Co., Ltd. All Rights Reserved.

啓林館平成27年度用教科書より Copyright(c) SHINKOSHUPPANSHA KEIRINKAN Co,ltd. All Rights Reserved.

（C）日本文教出版 Copyright (c) 2014 Nihon Bunkyou Shuppan Co., Ltd. All Rights Reserved.

国語 １ 光村図書出版株式会社 Copyright Mitsumura Tosho Publishing Co.,Ltd. All rights reserved.

© Hitachi Solutions, Ltd. 2014. All rights reserved.

Problems on e-textbook and solutions

Yoshiki Sameshima

Hitachi Solutions, member of CoNETS

© Hitachi Solutions, Ltd. 2014. All rights reserved.

Problem 2: text selection and highlight during text-speech of rasterized text

Solution: text data associated with its position of rasterized text in image

Solution’: combination of fixed + reflowable layout, with the AHL

Problem 1: fixed layout EPUB lacks logical structure for GUI style

Solution: tab and popup attached to collection (EPUB 3.0.1) of pages

Problem 3: no standard URI between textbooks from different publishers

Solution: new URI using uuid + epubcfi or learning item name

Problem 4: many videos and interactive contents and file size becomes large,

it may be impossible to store all textbooks in table

network may be overloaded, if pupils start download at a time

Solution: division of file into smaller chunks and on-demand download

1. Problems on e-textbook and solutions

Problems related to image base fixed layout textbook

Problems related to e-textbook in general

© Hitachi Solutions, Ltd. 2014. All rights reserved.

textbook: arithmetic of 6th grade

content 1 title: are of circle display type: tab

content 3 title: hint display type: popup

page

page

page page

learning unit 3: symmetric figure

content 1 title: are of circle display type: tab

content 3 title: hint display type: popup

content 2 title: exercise display type: tab

content 4 title: answer display type: tab

page page

page page

page page

learning unit 2: proportion and reverse proportion

content 1 title: are of circle display type: tab

content 3 title: hint display type: popup

content 2 title: exercise display type: tab

content 4 title: answer display type: tab

page page

page page

page page

2. GUI styles attached to collections of multiple pages

learning unit 1: area of circle

content 1 title: area of circle GUI style: tab

content 3 title: hint GUI style: popup

content 2 title: exercise GUI style: tab

content 4 title: answer GUI style: tab

Textbook contains hierarchy of learning units/contents/image pages Each of them corresponds of a collection of EPUB Publication 3.0.1 Author can choose GUI style for each collection corresponding to content

page page

page page

page page

collection corresponding to learning unit

collection corresponding to content

collection corresponding to page

© Hitachi Solutions, Ltd. 2014. All rights reserved.

3. Inter-textbook hyperlink/URI

Problems

no standard URI with uuid/isbn + epubcfi

no URI with learning item/keyword

Solution: new URN scheme

Type 1: uuid/isbn + epubcfi

urn:conets:epub-uuid:123-456:unit01.epub:epubcfi(/6/2!/4/0)

UUID of textbook divided EPUB file epubcfi

Type 2: subject + grade + learning item/keyword

urn:conets:textbook:science:5:electric magnet

subject and grade learning item/keyword