| 摘要 |
<P>PROBLEM TO BE SOLVED: To grasp later appearing objects. <P>SOLUTION: An electronic book device includes: a reading history information acquisition unit which acquires reading history information in response to reading act instructions such as instruction to open the electronic book, instruction to turn over the pages or the like; a read part information acquisition unit which acquires one or more pieces of read part information specifying read parts from one or more pieces of reading history information; an appeared object acquisition unit which acquires one or more appeared objects each of which is one kind of object appeared in the read parts, from one or more pieces of read part information; a not appeared object acquisition unit which acquires one or more not appeared objects each of which is one kind of object appearing in unread parts, from one or more pieces of read part information; an object display unit which displays one or more appeared objects and one or more not appeared objects in different display modes, so that later appearing objects can be grasped. <P>COPYRIGHT: (C)2013,JPO&INPIT |
