U.S. Pat. No. 6,902,483

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The handheld electronic game device according to embodiments of the present invention has a novel shape of a toy gun with two handles and two triggers each associated with a handle. This shape allows a player to hold the gun with both hands and control the game play using the two triggers. The electronic games played with this device may simulate a battle or shooting scene, involving different types of weapons, different environments and conditions, etc., and the two triggers are used to fire various weapons. The handheld game device may have one or more built-in display screens and be played as stand-alone device, or it may be played with an external game unit such as a game machine with a display screen, a television set, a PC, etc., with or without built-in display screens. When played with an external unit, the handheld device and the external unit may be provided with an aiming relationship detection system to detect an aiming relationship of the handheld device with respect to areas on the display screen of the external unit. In one example, where a handheld device with a built-in display screen is played together with an external unit, the screen of the external unit displays a terrain or a scene seen by the player, and the built-in display(s) of the handheld device simulates a view seen through a scope used on traditional guns and/or a radar scan or satellite image.

Referring to FIGS.1(a) and1(b), a handheld electronic game device10according to embodiments of the present invention has a main body11, which may have the shape of a barrel of a gun, and may include one or more muzzles11a(three are shown in FIG.1(a)). Two handles12aand12bare connected to the body on the underside that can be held with the two hands of a player. Two trigger devices15aand15bare disposed adjacent the handles12aand12b, respectively, and can by operated by the two hands of the player. When playing, the two trigger devices15a,15bfunction as the primary control of the game play and control the firing of the gun. Optionally, a rear member26may be detachably attached to the main body via one or more attachment slots25to provide a support member for the shoulder. A display screen16, such as an LCD, is mounted on the top of the body11. Preferably, it is disposed at a position where a sight or scope would be located on a gun. The display screen16provides graphic display for game playing as well as menu display for various control and selection functions of the electronic game device. The display screen16is preferably non-fixedly mounted to the body via a connecting part, which allows the display screen to rotate in a three dimensional range, and to change its mounting height above the body11, as shown by the arrows in FIGS.1(a) and1(b). In one embodiment (not shown), a slot is provided on the top of the main body11and the display screen16retracts into the slot when not in use. The non-fixed mounting lessens the restriction on the size of the display screen. In an alternative embodiment, two display screens16aand16bmay be provided adjacent each other as shown in FIG.1(b). The two display screens may simultaneously display different simulations, such as a radar scan on one screen and a scope of a gun on the other. The display screen is also used to display menus for controlling the game software. A speaker17and a vibration device18(seeFIG. 2) are provided within the main body11to simulate the sound and recoil motion of a gun being fired. The speaker17can also provide background sounds. The sound and recoil effects may be turned on and off.

In addition to the two trigger devices15aand15b, a button19may be provided as a launch button for heavier weapons depending on the electronic game being played. The button19is preferably located at a position that can be conveniently accessed by a thumb of the player when holding the gun. Additional button(s)21a,21bmay be provided on the main body11or the handles12a,12bfor additional control functions. For example, when a menu is displayed on the screen16, the two trigger devices15a,15bmay be used as Up and Down or Left and Right arrow buttons, and the additional buttons21a,21bmay be used as Select and Exit buttons, or vice versa.

Referring toFIG. 2, a control section22having appropriate processing hardware is provided within the handheld electronic game device and connected to the various components of the device, such as the trigger devices15a,15b, the additional control buttons19,21a,21b, the display screen16, the speaker17and the vibrating device18, etc. One or more memory card slots23are provided on the body for inserting memory cards having game software and/or other data stored thereon (two slots are shown inFIG. 1a, and the insertion of memory cards is indicated by arrows). For example, one memory card may store game software, and the other memory card may be used to store the history of a game play, including the firing conditions and results of the various weapons, etc., and any other data that the player may choose to record. An interface section24may be provided for communicating with an external game device as described later.

Optionally, a head-mount display device30may be provided and connected to the handheld10device via wired or wireless communication. As shown inFIG. 1, the head-mount device may be of sufficiently compact size and can be attached to the handheld device when not worn. The head-mount display device may be used in lieu of the display screen16to display game images, such as to simulate a night vision device. Alternatively, it may be used in combination with the display screen16. Such head-mount display devices have been used in video display and electronic game display, such as the Eye-Trek® device manufactured by Olympus.

The handheld electronic game device shown in FIGS.1(a),1(b) and2may be played as a stand-alone unit. In this embodiment, the control section22contains all game control software and causes the display screen16to displays game images. The player controls the firing of weapons based on the game images, and the game images change in response to the firing of weapons.

As shown inFIG. 3, the handheld electronic game device10can also be played together with an external game unit40which has a display screen41, such as an electronic game machine, a television set, a PC, etc. The system for this mode of playing may have a variety of configurations, and the control functions may reside in different parts of the system. For example, the handheld device may be connected directly to a stationary game machine that integrates a display and game control functions. Alternatively, as shown inFIG. 3, the handheld device10may be connected to a portable electronic game device43that does not have an image display, and the game device is connect to a display41such as a TV that does have game control functions. The various parts of the system may be connected via wired or wireless communication to communicate game data and/or control signals. FIGS.1(a) and4illustrate a wired connection with a wire42that connects the handheld device10to the external unit40. The external unit40, which may also be referred to as a target unit, displays on its display screen41one or more targets (such as human figures, natural objects, buildings and other structures, vehicles, airplanes, ships, etc.), so that the player may aim the handheld device at the targets. The target unit40and the handheld device10are provided with an aiming relationship detection system to detect the aiming of the handheld device with respect to the targets displayed by the target unit. Various such detection systems have been used in electronic game devices and games, such as Namco® (e.g. Guncon 2®), Konami® (e g. Capture Eye®), Sony PlayStation 2® (e.g. Vampire Night® and The Keisatsukan 24H®). In a system described in U.S. Pat. No. 6,328,650, a handheld device receives control signals and video signals from a main game machine, and separates vertical and horizontal synchronizing signals using an HV separator. The handheld device has a photo-sensor to detect light from an aimed-at position on the screen of the main game device, and a position computation section that obtains the coordinates of the aimed-at position based on a detection pulse at that point and synchronizing signals from the HV separator. U.S. Pat. No. 5,672,108 describes an electronic game comprising a gun-shaped emitter unit that emits a beam of infrared radiation, and a target unit having a LCD that displays various targets on the screen. The target unit has four IR sensors located near the four corners of the display to detect which quadrant of the screen receives the strongest IR radiation, and creates output effects based on the nature of the targets present in the aimed-at quadrant.

In one embodiment where the handheld device is played with an external game unit, the display screen on the handheld unit and the display on the external unit are synchronized or coordinated and are responsive to the same input signals generated by the trigger devices and the aiming relationship detection system. For example, the screen of the external unit may display a plurality of targets, and the screen of the handheld unit may display a magnified image of a target being aimed at and a cross hair. The targets displayed on the external unit may be stationary or moving depending on the game software, and the positioning of the magnified target image displayed on the screen of the handheld unit will depend on the aiming of the handheld unit with respect to the target on the screen of the external unit. When the player fires a weapon at a target using the trigger device, the images displayed on both screens may show the target being destroyed. This effect simulates the use of a scope on a gun.

In another embodiment where the handheld device is played with an external game unit, one display screen on the handheld unit has a display that simulates a radar screen or a scan image received from a satellite or other source showing objects that are too far or hidden from the plain view of the player. The heavy weapon firing button19on the handheld device may be used to fire a heavy weapon at the far away or hidden object. Another display on the screen may simulate the scope of a gun, and the external unit may display a scene or terrain showing the environment of the player. Those skilled in the art will appreciate that endless varieties of games may be played with the electronic game device according to embodiments of the present invention, taking advantage of the device configuration and display capabilities.

It will be apparent to those skilled in the art that various modification and variations can be made in the handheld electronic game device of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover modifications and variations that come within the scope of the appended claims and their equivalents.