OPERATION INSTRUCTING DEVICE, OPERATION INSTRUCTING METHOD, AND OPERATION INSTRUCTING PROGRAM

An operation instructing device is included substantially at the center of a portable apparatus, and has a sensor for detecting motion values of the portable apparatus. A user performs various movements instructed by an instructing unit, while holding the portable apparatus. The motion values detected by the sensor are normalized by an analyzing unit, and then an area setting unit sets a movement detecting area personally for the user. An assigning unit obtains operation instructions for each function of the portable apparatus, and generates an operation instruction table in which each instruction operation is assigned to a sub area of the movement detection area. A judging unit judges within which sub area the motion value notified by the analyzing unit falls, and outputs the operation instruction that is assigned to the sub area within which the judging unit judged that the notified motion value falls.