A display device includes: a first display unit which is a transmissive display unit; a transparent backlight formed of transparent material, provided relative to the first display unit opposite the viewing surface of the first display unit, and configured to emit light toward the first display unit; a light source configured to output object light to the transparent backlight where light from an object provided opposite the light emission plane of the transparent backlight is output toward the transparent backlight and the first display unit; and a controller configured to control the first display unit, the transparent backlight, and the light source so that light emitted from the transparent backlight shows an image on the first display unit, and so that the object light can pass through the transparent backlight and the first display unit and be output.

A DC motor control device includes a communication circuit configured to receive a control command specifying a target rotation amount for a DC motor, a sensor interface configured to receive a detection signal from a rotational angle sensor that outputs the detection signal every time the DC motor rotates by a certain rotational angle, a step counter that outputs a count signal every time the detection signal has been received a certain number of times, a controller that, based on the number of times the count signal received, determines a step count representing the total amount of rotation, and generates a control signal that controls the DC motor in accordance with the step count and the target rotation amount, and a drive signal generation circuit that generates a drive signal that rotates the DC motor in accordance with the control signal.

A DC motor control device includes a communication circuit configured to receive a control command specifying a target rotation amount for a DC motor, a sensor interface configured to receive a detection signal from a rotational angle sensor that outputs the detection signal every time the DC motor rotates by a certain rotational angle, a step counter that outputs a count signal every time the detection signal has been received a certain number of times, a controller that, based on the number of times the count signal received, determines a step count representing the total amount of rotation, and generates a control signal that controls the DC motor in accordance with the step count and the target rotation amount, and a drive signal generation circuit that generates a drive signal that rotates the DC motor in accordance with the control signal.

A marble racing game including marbles, a racetrack having vertical loading slots, a release mechanism, vertical lanes, a plurality of diverters, and one or more dowels located at the bottom portion of the racetrack which serve to efficiently order each marble in the position in which they reach the bottom of the racetrack.

A light guide plate according to one or more embodiment is formed of a panel transparent to visible light, and includes: a plurality of first prisms arranged along one surface of the light guide plate and distributed in a first pattern to reflect the visible light emitted from a first light source and entering the light guide from an input surface toward another surface of the light guide plate; and a plurality of second prisms arranged in a second pattern to reflect the visible light emitted from a second light source and entering the light guide from the input surface toward said other surface of the light guide plate. Each first prism includes a reflection surface directly facing the first light source, and each second prism includes a reflection surface directly facing the second light source.

A light guide plate according to one or more embodiment is formed of a panel transparent to visible light, and includes: a plurality of first prisms arranged along one surface of the light guide plate and distributed in a first pattern to reflect the visible light emitted from a first light source and entering the light guide from an input surface toward another surface of the light guide plate; and a plurality of second prisms arranged in a second pattern to reflect the visible light emitted from a second light source and entering the light guide from the input surface toward said other surface of the light guide plate. Each first prism includes a reflection surface directly facing the first light source, and each second prism includes a reflection surface directly facing the second light source.

A game system may comprise a board comprising a plurality of pegs extending from the board, wherein the pegs may be disposed in rows; at least one deflector configured to be coupled to at least two pegs aligned with one another; at least one ball configured to move on the board between and/or along the pegs and deflector(s) from a start end to a goal end of the board; at least one goal configured to be coupled to at least two pegs in a goal row of the rows of pegs, wherein the goal is configured to receive a ball; and a plurality of play selectors which determine a play for each player during a turn of a game. The goal of the game may be to get a ball into a goal by navigating across the board having the pegs and deflectors as obstacles to movement of the ball.

A game system may comprise a board comprising a plurality of pegs extending from the board, wherein the pegs may be disposed in rows; at least one deflector configured to be coupled to at least two pegs aligned with one another; at least one ball configured to move on the board between and/or along the pegs and deflector(s) from a start end to a goal end of the board; at least one goal configured to be coupled to at least two pegs in a goal row of the rows of pegs, wherein the goal is configured to receive a ball; and a plurality of play selectors which determine a play for each player during a turn of a game. The goal of the game may be to get a ball into a goal by navigating across the board having the pegs and deflectors as obstacles to movement of the ball.

A game machine includes a first game processing portion performing game processing in a first mode; a second game processing portion performing game processing in a second mode; and a return processing portion performing return processing of a virtual game ball remaining on a virtual board face in a case of satisfying a predetermined condition. The first game processing portion displays at least a virtual board face and a first virtual winning port, and after the virtual game ball launched onto the virtual board face enters the first virtual winning port, the first virtual winning port is deleted from the virtual board face, and the second game processing portion displays a second virtual winning port capable of acquiring a winning ball on the virtual board face. In case the virtual game ball enters the first virtual winning port or second virtual winning port, the return processing portion operates.

A light guide plate for presenting a stereoscopic image via parallax includes: a plurality of deflectors arranged in rows parallel to an incidence surface through which light from a light source enters the light guide plate, the light totally reflecting inside the light guide plate while being guided therethrough, the plurality of deflectors including a reflection surface for reflecting and causing an emission surface to emit said light; and the reflection surfaces in a row of the plurality of deflectors are all oriented in the same direction with the orientation of the reflection surfaces changing for each row in accordance with distance from the incidence surface.