Patent ID: 8289345

Claim:
A display device, comprising: a first memory; a second memory; a first image generation unit configured to generate a first image into the first memory, the first image complying with a predetermined display size and a predetermined display position; a second image generation unit configured to generate a second image into the second memory; an acquisition unit configured to acquire a modification instruction for modifying the display size and the display position of the first image; a display unit configured to display the second image together with the first image so that the second image is overlayed on top of the first image; a control unit configured to: (i) before the acquisition unit acquires the modification instruction, control the first image generation unit to generate the first image into the first memory and control the second image generation unit to generate a first partially transparent second image into the second memory as the second image, the first partially transparent second image having a transparent part positioned over the first image displayed by the display unit; (ii) after the acquisition unit has acquired the modification instruction, control the first image generation unit to start modifying the display size and the display position of the first image; (iii) after the acquisition unit has acquired the modification instruction and until the modification of the first image is completed, control the second image generation unit to generate an opaque second image into the second memory as the second image, the opaque second image being large enough in size to cover the first image being modified by the first image generation unit and being displayed by the display unit; and (iv) after the modification of the first image has been completed, control the second image generation unit to generate a second partially transparent second image into the second memory as the second image, the second partially transparent second image having a transparent part positioned over the modified first image displayed by the display unit.