INSTRUCTION INPUT DEVICE, INSTRUCTION INPUT METHOD, PROGRAM, RECORDING MEDIUM AND INTEGRATED CIRCUIT

摘要

An instruction input device (10) which is easy for a user to understand and to operate intuitively is provided with a first direction detection unit (102) for detecting a first direction which is the direction that the user is viewing; a second direction detection unit (103) for detecting a second direction which is a direction in which the user is performing a pointing operation; a gaze position calculation unit (106) for calculating a gaze position of the user upon a screen on the basis of the position of the user and the first direction; a reference coordinate group calculation unit (107) for calculating, on the basis of the position of the user and the first direction, a reference line upon space connecting the user and the screen which is a line corresponding to the gaze position; an offset amount calculation unit (108) for calculating, as an offset amount corresponding to the gaze position, a distance of the second direction between an input coordinate indicating the position of a hand of the user and the reference line; a pointer display position calculation unit (109) for calculating, as the display position of a pointer upon the screen, a position for which the distance in a first screen prescribed direction between the gaze position is the offset amount.