Mobile terminal device and display control method

Abstract

A mobile terminal device includes a display unit that includes a display area in which an image indicating an operation unit is displayed, a detecting unit that detects a touch operation performed on the display unit, and a control unit that changes the image indicating the operation unit displayed on the display unit according to a trajectory of the touch operation detected by the detecting unit.

What is claimed is: 
     
         1 . A terminal device, comprising:
 a display unit that displays a first display area in which a first image indicating an operation are at for scroll operation is displayed and a second display area, in which a second image scrolled by the first display area is operated, is displayed;   a detecting unit that detects a touch operation performed on the second display area, and   a control unit that determines moving direction based on the touch operation detected by the detecting unit and changes the first image according to the determined moving direction.   
     
     
         2 . The terminal device according to  claim 1 , wherein the display unit displays an image of a scroll wheel as the first image in the first display area; and the control unit determines rotation angle as the moving direction of the touch operation and changes the image of the scroll wheel according to the determined rotation angle. 
     
     
         3 . The terminal device according to  claim 1 , wherein the display unit displays an image of a slider bar as the first image in the first display area; and the control unit determines downward direction or upward direction as moving direction of the touch operation and changes the image of the slider bar according to the determined downward direction or upward direction. 
     
     
         4 . The terminal device according to  claim 1 , wherein the display unit displays an image of a slider bar as the first image in the first display area; and the control unit determines right direction or left direction as moving direction of the touch operation and changes the image of the slider bar according to the determined right direction or left direction. 
     
     
         5 . The mobile terminal device according to  claim 1 , further comprising:
 a first housing that is provided with the display unit; and   a second housing that is provided with an operation unit that can be moved with respect to the first housing and becomes exposed due to said movement,   wherein the image indicating the operation area for scroll operation displayed in the first display area is an image corresponding to the operation unit of the second housing,   the display unit displays the image corresponding to the operation unit when the operation unit of the second housing is not exposed, and   the display unit does not display the image corresponding to the operation unit when the operation unit of the second housing is exposed.   
     
     
         6 . A display control method of a terminal device that includes a display unit, the display control method, comprising:
 displaying an first image indicating an operation area for scroll operation in a first display area of the display unit;   displaying a second image indicating scrolled by the first display area is operated in a second display area of the display unit;   detecting a touch operation performed on the second display area;   determining moving direction based on the detected touch operation detected;   changing the first image according to the determined moving direction.   
     
     
         7 . A computer-readable recording medium storing program, the program causing a computer, which includes a display unit, to execute:
 displaying an first image indicating an operation area for scroll operation in a first display area of the display unit;
 displaying a second image indicating scrolled by the first display area is operated in a second display area of the display unit; 
 detecting a touch operation performed on the second display area; 
 determining moving direction based on the detected touch operation detected; 
   changing the first image according to the determined moving direction.