Computer system, display device, display controller, image processing method, display resolution change method, and computer program

A display controller, which controls display of a display device, comprising:

• an event generator to generate an event when a specified operation for a display resource change request is received;
• an information acquisition unit to acquire information concerning the position and size of an application window displayed on the screen of said display device when the event generated by said event generator is received;
• a resolution changing unit to change a display resolution of said display device in response to said event;
• and
• a display processing unit to make the application window to be displayed on the screen of said display device, the display resolution of which is changed by said resolution changing unit, based on the information concerning the position and size acquired by said information acquisition unit.

A display controller, which controls display of a display device, comprising:

• a coordinate acquisition unit to acquire a coordinate, which defines the size of an object displayed at a first display resolution on the screen of said display device;
• a resolution changing unit to change the display resolution of said display device from said first display resolution to a second display resolution;
• a coordinate interpolator to interpolate the coordinate, which is acquired by said coordinate acquisition unit, in response to change from the first to the second display resolution;
• and
• an object display device to display the object on the screen of said display device, the display resolution of which is changed to said second display resolution by said resolution changing unit, based on the coordinate interpolated by said coordinate interpolator.

An image processing method to display an object in a display device, comprising the steps of:

• receiving a resolution change request from a user;
• acquiring information about an object displayed in said display device when said request is received;
• changing a display resolution of said display device according to said request;
• and
• displaying the object on the screen of said display device, the display resolution of which is changed, based on said information, in the same size on the screen as that in the case when said request was received.

A display resolution change method to change a display resolution of a display device, comprising the steps of:

• storing a coordinate, which defines the size of a window displayed in the display device at a first display resolution;
• changing the display resolution from said first display resolution to a second display resolution;
• interpolating the stored coordinate in response to said change from the first to the second display resolution;
• and
• displaying the window according to the interpolated coordinate and a display content to be displayed in an inside area of the window without interpolation corresponding to said change from the first to the second display resolution.

A computer program to be executed by a computer system controlling a display device, for executing a process comprising the steps of:

• detecting a change resolution request;
• determining the size of an object displayed in a display area of the display device;
• changing a display resolution of the display device according to the change resolution request;
• and
• displaying the object in the display device, the display resolution of which is changed, based on the detected size.