Abstract: The detection stability of a camera regarding light-emitting sections is enhanced. An input device (100) includes a tracked region in which a plurality of light-emitting sections (H) are arranged. The tracked region includes a rear tracked section (31A) located on the rear side of operation members (13, 14, and 15) in side view and a front tracked section (31B) that is located on the front side of the rear tracked section (31A) and that extends in a direction different from that of the rear tracked section (31A) in side view.

Abstract: An input device that enables various operations is proposed. A plurality of operating buttons (11) and direction keys (12) are arranged in an upper surface (17g). Lower surface buttons (31R, 31L) are arranged in a lower surface (17a). The lower surface buttons (31R, 31L) project downward from the lower surface (17a), have pressing target surfaces (31a) to be pressed by a finger of a user, and are arranged such that the pressing target surfaces (31a) are inclined with respect to a front edge (10a) of the input device (1). The lower surface buttons (31R, 31L) can be moved when the pressing target surfaces (31a) are pressed in a button rearward direction as a direction along the lower surface (17a).

Abstract: An input device that enables various operations is proposed. A plurality of operating buttons (11) and direction keys (12) are arranged in an upper surface (17g). Lower surface buttons (31R, 31L) are arranged in a lower surface (17a). The lower surface buttons (31R, 31L) project downward from the lower surface (17a), have pressing target surfaces (31a) to be pressed by a finger of a user, and are arranged such that the pressing target surfaces (31a) are inclined with respect to a front edge (10a) of the input device (1). The lower surface buttons (31R, 31L) can be moved when the pressing target surfaces (31a) are pressed in a button rearward direction as a direction along the lower surface (17a).

Abstract: Provided is a control device that projects an image representing input information onto a projection surface so as to follow an input of the input information, with an effect in accordance with the type of the projection surface. As the projection surface, a thin sheet material attached on a wall surface is prepared, for example. The color of the thin sheet material is a dark color, for example, and in time with projection of the image representing a handwritten character or picture, a sound, which will come out when the character or the picture is drawn with a chalk on a chalkboard, is output from a speaker installed on the back side of the projection surface.

Abstract: To provide a controller and an information processing system capable of providing a click feeling and an operation sound with a simpler mechanism. The controller includes a hollow portion, a freely movable first magnet placed in the hollow portion, a second magnet fixed to an outer side of the hollow portion, and a bottom surface having a tilted shape with respect to a ground surface.