Display control device, display control method, and computer program

Abstract

A display control device according to the present invention includes a detection unit for detecting contact of an operating object on a display surface of a display unit, a position calculation unit for calculating a contact position, on the display surface, of the operating object whose contact has been detected by the detection unit, an operation process determination unit for determining, from a plurality of operation processes associated with a motion of the operating object, one operation process to be performed, according to a length of a contact time of continuously contacting the display surface within a first area including a reference contact position which is a contact position of the operating object at a time of the operating object being made to contact the display surface after a state of separation from the display surface, and an operation processing unit for changing display of the display unit by the operation process that is performed, based on a motion of the operating object that is further continuously in contact with the display surface.

1 . A display control device comprising:
 circuitry configured to
 determine one operation process based on a pressure and a length of a contact time of continuously contacting a display surface by an operating object, the continuous contact occurring within a first area of the display surface including a reference contact position which is a contact position of the operating object at a time of the operating object being made to initially contact the display surface. 
   
     
     
         2 . The display control device according to  claim 1 , wherein the determination of the one operation process is made based on the pressure and the length of the contact time of continuously contacting the display surface by the operating object prior to moving the operating object in a gesture motion. 
     
     
         3 . The display control device according to  claim 1 , wherein the circuitry is further configured to change a display of the display surface by the determined one operation process, based on the operating object in contact with the display surface. 
     
     
         4 . The display control device according to  claim 1 , wherein the circuitry is further configured to change a display of the display surface by the determined one operation process, based on a motion of the operating object in contact with the display surface. 
     
     
         5 . The display control device according to  claim 4 , wherein the operating object is further continuously in contact with the display surface through completion of the gesture motion. 
     
     
         6 . The display control device according to  claim 1 , wherein the one operation process is associated with a single gesture-type motion of the operating object. 
     
     
         7 . The display control device according to  claim 6 , wherein the single gesture-type motion of the operating object is associated with a plurality of different operation processes, and the one operation process is determined based on the pressure and the length of the contact time of the operating object being in a state of continuously contacting the display surface within the first area prior to the moving of the operating object in the gesture motion. 
     
     
         8 . The display control device according to  claim 1 , wherein the reference contact position is the contact position of the operating object at the time of the operating object being made to initially contact the display surface after a state of separation from the display surface. 
     
     
         9 . The display control device according to  claim 1 , wherein the circuitry is further configured to detect the contact of the operating object on the display surface. 
     
     
         10 . The display control device according to  claim 9 , wherein the circuitry is further configured to calculate the contact position, on the display surface, of the operating object whose contact has been detected. 
     
     
         11 . The display control device according to  claim 10 ,
 wherein the circuitry calculates the contact position on the display surface with respect to the first area and a second area provided adjacent to the first area in a movable direction of the operating object, and   wherein the circuitry initiates a changing of a level of detail of display content displayed on the display surface, according to which area of the first area or the second area the contact position of the operating object is positioned in.   
     
     
         12 . The display control device according to  claim 11 , wherein the circuitry is further configured to
 increase the level of detail of the display content in a case the operating object is positioned within the first area, and   decrease the level of detail of the display content in a case the operating object is positioned within the second area.   
     
     
         13 . The display control device according to  claim 1 , wherein the motion of the operating object is associated with a plurality of different operation processes, and the one operation process is determined based on the pressure and the length of the contact time of the operating object being in a state of continuously contacting the display surface within the first area. 
     
     
         14 . The display control device according to  claim 1 ,
 wherein the circuitry is further configured to
 control a scrolling of an image displayed on the display surface, according to a movement of the contact position of the operating object on the display surface, and 
 changing a level of detail of display content displayed on the display surface, according to a movement of the contact position of the operating object on the display surface, and 
   wherein, in a case of determining that the contact time of the operating object within the first area has exceeded a threshold time, the circuitry initiates the changing of the level-of-detail of the display content.   
     
     
         15 . The display control device according to  claim 14 ,
 wherein, in a case of determining that the contact position of the operating object is positioned outside the first area, the circuitry initiates the scrolling of the image.   
     
     
         16 . The display control device according to  claim 14 , wherein the circuitry is further configured to detect the pressure imposed by the operating object on the display surface. 
     
     
         17 . The display control device according to  claim 16 , wherein, in a case the detected pressure is higher than a threshold pressure, the circuitry initiates the changing of the level-of-detail of the display content. 
     
     
         18 . The display control device according to  claim 1 ,
 wherein, in a case the contact time of the operating object within the first area does not exceed a threshold time and the pressure is not higher than a threshold pressure, the circuitry initiates the scrolling of the image.   
     
     
         19 . A display control method comprising:
 determining one operation process based on a pressure and a length of a contact time of continuously contacting a display surface by an operating object, the continuous contact occurring within a first area of the display surface including a reference contact position which is a contact position of the operating object at a time of the operating object being made to initially contact the display surface.   
     
     
         20 . A non-transitory computer-readable medium having embodied thereon a program, which when executed by a computer causes the computer to perform a method, the method comprising:
 determining one operation process based on a pressure and a length of a contact time of continuously contacting a display surface by an operating object, the continuous contact occurring within a first area of the display surface including a reference contact position which is a contact position of the operating object at a time of the operating object being made to initially contact the display surface.