Patent ID: 8451215

Claim:
A display controlling device comprising: a display unit for displaying an image; an input unit at which a signal is input, the signal being output from an operation unit, the operation unit including an imaging sensor for capturing a light image, the signal being based on an image captured by the imaging sensor, the operation unit being arranged for a user to hold and operate, the light image being emitted from a light emitter toward front of a display screen of the display unit, the light emitter being provided in a periphery of the display screen; an intersection position acquirer for acquiring, at every predetermined period, information about a position of an intersection based on the signal input at the input unit, the intersection being produced by a plane including the display screen of the display unit and one of a region including an optical axis of the imaging sensor and a region including an axis substantially parallel to the optical axis; a determiner for determining, at every predetermined period, whether the intersection is located inside the display screen of the display unit based on the information about the position of the intersection acquired by the intersection position acquirer; a cursor displayer for displaying a cursor at the position of the intersection on the display screen of the display unit if the determiner determines that the intersection is located inside the display screen; and a first notification controller for notifying that the cursor is located outside the display screen with a first notifier if the determiner determines that the intersection is not located inside the display screen.