Thumbnail display apparatus, thumbnail display method, and computer readable medium for switching displayed images

Abstract

A thumbnail display apparatus includes a display that displays, one by one, thumbnail images corresponding to plural pages included in a document, the thumbnail images being generated by reducing images of the corresponding pages included in the document to a predetermined size, a detecting unit that detects a sliding operation of an object, the sliding operation being performed when the thumbnail image displayed by the display being touched by the object, and a controller that performs, in response to detection of the sliding operation by the detecting unit, page switching so as to sequentially switch the page of the document whose thumbnail image is being displayed by the display to other pages.

What is claimed is: 
     
         1 . A display apparatus, comprising:
 a display configured to display a page in a document, the document having a plurality of pages;   a starting unit configured to start to switch the page displayed on the display in response to an operation on the display; and   a control unit configured to:
 switch the page displayed on the display at a first interval during a touching of a finger of a user on the display after the starting unit starts to switch the page, 
 switch the page displayed on the display at a second interval during the touching of the finger of the user on the display in response to detecting a slide operation performed by the finger of the user in a first direction while the page displayed on the display is switched at the first interval, the second interval being shorter than the first interval, and 
   switch the page displayed on the display at a third interval during the touching of the finger of the user on the display in response to detecting a slide operation performed by the finger of the user in a second direction while the page displayed on the display is switched at the second interval, the third interval being longer than the second interval.   
     
     
         2 . The display apparatus according to  claim 1 , wherein, while the page switching is performed, the display is configured to display a part of or an entirety of the page to be displayed and a page preceding the page to be displayed, the preceding page being displayed in a manner such that a part of the preceding page is folded back. 
     
     
         3 . The display apparatus according to  claim 2 , wherein the preceding page is displayed in a state in which a portion thereof in a direction opposite to a direction of the sliding operation is folded back in the direction of the sliding operation. 
     
     
         4 . The display apparatus according to  claim 3 , wherein the page to be displayed is displayed in a position shifted in the direction opposite to the direction of the sliding operation. 
     
     
         5 . The display apparatus according to  claim 4 , wherein a position where the page to be displayed is displayed varies so as to follow another sliding operation which is performed after the page switching is started. 
     
     
         6 . The display apparatus according to  claim 4 , wherein the page to be displayed is enlarged. 
     
     
         7 . A display method comprising:
 displaying a page in a document on a display, the document having a plurality of pages;   starting switching the page displayed on the display in response to an operation on the display;   switching the page displayed on the display at a first interval during a touching of a finger of a user on the display after the starting switching the page displayed on the display;   switching the page displayed on the display at a second interval during the touching of the finger of the user on the display in response to detecting a slide operation performed by the finger of the first user in a first direction while the page displayed on the display is switched at the first interval, the second interval being shorter than the first interval; and   switching the page displayed on the display at a third interval during the touching of the finger of the user on the display in response to detecting a slide operation performed by the finger of the user in a second direction while the page displayed on the display is switched at the second interval, the third interval being longer than the second interval.   
     
     
         8 . A non-transitory computer readable medium storing a program causing a computer to execute a display process, the process comprising:
 displaying a page in a document on a display, the document having a plurality of pages;   starting switching the page displayed on the display in response to an operation on the display;   switching the page displayed on the display at a first interval during a touching of a finger of a user on the display after the starting switching the page displayed on the display;   switching the page displayed on the display at a second interval during the touching of the finger of the user on the display in response to detecting a slide operation performed by the finger of the first user in a first direction while the page displayed on the display is switched at the first interval, the second interval being shorter than the first interval; and   switching the page displayed on the display at a third interval during the touching of the finger of the user on the display in response to detecting a slide operation performed by the finger of the user in a second direction while the page displayed on the display is switched at the second interval, the third interval being longer than the second interval.