JP2007167610A - Coordinates input device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coordinates input device capable of inexpensively detecting space coordinates. <P>SOLUTION: An operating body 10 is equipped with: a grip part 10a; a distal end part 11 with a cavity composed of an elastic material including a diffusion material which is provided on the distal end of the grip part 10a and is molded by a rotation molding; and a light emission part 12 which is provided inside the cavity of the distal end part 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to an operating body used in a game device that can be operated by a player's natural motion without direct operation of an operating means or the like by a player, and a coordinate input device using the operating body.

  In a video game machine, it is possible to detect a spatial position of light emitting means operated by a player, control the game based on the spatial position, and operate the game based on a player's natural motion The applicant of the present invention is a game device that is operated by a player's action relative to a display screen, and is operated by the player to emit light, and to receive light from the light emitting means. And a game device having position detecting means for detecting a spatial position of the light emitting means and control means for controlling the game based on the spatial position detected by the position detecting means (for example, Patent Documents). 1).

In order to realize the above, Patent Document 1 discloses four types of operation means having a shape imitating a percussion instrument maraca as an example of the operation means.
For example, as a maraca-shaped operating means, it has a shape imitating a maraca of a percussion instrument, and a plurality of LEDs, which are light emitting portions, are embedded in an egg-shaped main body. As a result, the light from the LED can be received by the light receiving unit on the housing side regardless of which direction the operating means is directed. The operation means has a hollow inside, a spring is stretched on the egg-shaped main body portion, and a wire penetrates the center thereof. A large number of granular balls are enclosed in the cavity of the egg-shaped main body. When the operating means is shaken, the vibration state is detected by the spring bending and touching the wire.

In addition to the switch using the spring and wire described above, a microphone is attached inside the operation means to detect the sound of a granular ball, or a strain gauge is provided inside the operation means to detect the vibration state of the operation means. May be.
A circuit board is provided inside the operation means, and the LED is appropriately lit, the operation state of the button is detected, and the contact between the spring and the wire is detected.

  Since the LED may be damaged when the main body is dropped, it is described that the LED is housed in the main body and the entire main body is formed of a transparent or translucent member.

  In addition, the purpose is to provide a technique for a player in the real space to freely operate an object in the video game space to play a game, and as a realization thereof, a controller grip that imitates a sword, a bat, etc. The two light emitting units provided in the light emitting device emit light, which is photographed by two CCD cameras, detects the three-dimensional coordinate position, and is reflected on the screen (for example, see Patent Document 2).

JP 2001-321564 A (6th page, FIG. 3) JP 2002-292123 A (page 8, FIG. 4)

  In Patent Document 1, a plurality of LEDs are built in the operation means held by the player, and the spatial position of the operation means operated by the player is detected. However, the position detection can be performed only about detection. Therefore, precise detection has not been achieved.

In Patent Document 2, two light emitting portions provided on the grip portion of the controller can be photographed with two CCD cameras and the spatial positions thereof can be detected three-dimensionally by image processing, but this is expensive. It was.
Therefore, the present application aims to provide a coordinate input device that can detect spatial coordinates at lower cost.

In order to solve the above problems, the present invention provides a gripping portion, a tip portion having a cavity made of an elastic material including a diffusion material formed by rotational molding provided at the tip of the grip portion, and the tip portion And a light emitting unit provided inside the cavity.

According to the above-described invention, the light emitted from the light emitting portion is diffused by the diffusion material at the tip and diffusely reflected inside, and when viewed from the outside, the intensity of light emitted from the entire tip is made uniform and does not depend on the direction of the operating body.
Furthermore, because the tip is made of an elastic material molded by rotational molding, it is less likely to be damaged even if the tip is hit.

In order to solve the above problems, the present invention provides a gripping portion, a tip portion having a cavity made of an elastic material including a diffusion material formed by rotational molding provided at the tip of the grip portion, and the tip portion A light emitting section provided inside the cavity, and an operating body comprising:
A detection sensor for detecting a light beam emitted from the light emitting unit;
A monitor for projecting an image, and image processing means for generating an image to be projected on the monitor;
A coordinate detection means for determining the center of the area of the light emitting portion from the light from the light emitting portion of the input device, and for obtaining the corresponding coordinates on the monitor;
It is as a coordinate input device provided with.

  According to the above invention, an image is displayed on the monitor, and the player operates the operating body while viewing the projected image, so that the light emitted from the light emitting portion of the operating body is detected by the detection sensor, and the corresponding monitor Coordinates can be detected. Furthermore, the distance between the monitor and the tip of the operating body can be detected from the light area of the tip.

Furthermore, in order to solve the above-described problems, the present invention provides a grip portion, a tip portion having a cavity made of an elastic material including a diffusion material formed by rotational molding provided at the tip of the grip portion, and the tip A light emitting part provided inside the cavity of the part, and an operating body comprising:
A detection sensor that detects light emitted from the light emitting unit, a monitor that displays an image, an image processing unit that generates an image displayed on the monitor, and a center of the area of the light emitting unit from the light from the light emitting unit of the input device Coordinate detection means for obtaining coordinates on the corresponding monitor,
Furthermore, the coordinate input device obtains the area of the light emitting unit, sets a threshold according to the size of the predetermined area, and acquires an on / off signal with the threshold as a boundary.

  According to the present invention, a virtual surface can be set in front of the monitor, and an on / off signal can be issued to the operating body with the virtual surface as a boundary.

Furthermore, in order to solve the above problems, the present invention provides any one of the above,
The light emitting part of the operating body is a coordinate input device provided with a clearance from the light emitting part on the tip side of the grip part and covered with a protective body.
According to the above-described invention, even if a player applies force to the coordinate input device more than necessary and an impact is applied to the tip portion to cause elastic deformation, the protector can absorb the impact and prevent the light emitting portion from being damaged. .

Furthermore, in order to solve the above-described problems, in the invention of any one of the above-mentioned inventions, the light emitting part of the operating body is a coordinate input device provided on the tip side of the grip part.
According to the above invention, even if the player holds the grip portion, the light emitting portion is provided on the tip side of the grip portion, so that the light from the light emitting portion is not blocked by the player's movement and can be detected by the detection sensor. .

Furthermore, in order to solve the above-described problems, the present invention provides a coordinate input device in which a plurality of light emitting portions of the operating body are received on the distal end side of the grip portion, and each emits light differently.
Thereby, the direction of the operating body with respect to the monitor can be obtained, and by detecting the posture, it can be reflected in the generation of the monitor image.

  According to the present invention, even if an operating body is created using an infrared LED that is a directional light emitter, the entire tip portion becomes one large light emitter by diffusing infrared rays inside the tip portion, which is substantially uniform. Since light is emitted to the outside, the coordinates can be detected regardless of the direction of the operating body. Furthermore, since the protective body is present even when the tip of the operating body is subjected to a large impact, the internal light emitting portion can be protected.

Embodiments of the present application will be described in detail with reference to the drawings. The present invention will be described while explaining the apparatus in detail.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a perspective view of a prize acquisition game machine of the present invention, and FIG. 2 shows a side view of the game machine during play.

The game machine 100 has a stick-like operation body 10 placed in a dent 3a of the operation body placing table 3 at a hand while the player sees an image displayed on the monitor 2 located in the center of the front of the vertical casing 1. Is held in the hand and the game is played by touching the part of the monitor 2 recognized as necessary on the screen.
For example, a plurality of stumps 4 are displayed on the monitor 2, an animal character 5 is displayed on each stump 4, and there is an animal character 5 a that is awake and an animal character 5 b that is sleeping with a nose lantern.

This game is a game that causes the player to touch the animal character 5b that is sleeping by touching the part of the monitor 2 with the operating body 10, and if the player does not touch the animal character 5a that is sleeping one after another, then the game is asleep. Animal cakrata falls from the stump. Since these animal characters 5 are woken up once and then fall asleep after a while, it is necessary to always wake up the sleeping animal character 5b. For this purpose, the player must always find and touch the sleeping animal 5b by using the operation body 10 that is held.

In this game machine, a game image is generated on a monitor 2 such as a CRT, a projector screen, a liquid crystal monitor or the like by the image processing means 21 of the control unit 20 which is a computer. The control unit 20 includes an image generation unit 21 that generates a game image and a detection unit 22, and can detect which position on the monitor 2 the operating tool 10 touches.
The image processing means 21 generates a game image by executing a predetermined game program and displays it as a video from the monitor 2, while the player sees this video, holds the console from the operator console storage 3 at hand, For various problems (game contents) displayed on the monitor 2, a game is played using the operating tool 10 while touching and inputting an appropriate position to the monitor 2 at an appropriate timing.

FIG. 3 shows a schematic side view of the operating body. The operating body 10 has a glove-like tip portion 11 (divided into two hands, that is, a thumb and another finger) imitating a hand at the tip of a rod-like grip portion 10a, and a light emitting portion 12 inside. The rear end portion 13 of the grip portion 10a is formed in a substantially spherical shape so that it does not slide down when held by hand, and a connection cord 14 protrudes from the rear end portion 13 and is attached to the housing 1. It is connected. The length of the connection cord 14 is such a length that the player can hold it in his hand and touch the operation body 10 with some margin in any place on the monitor 2.
As a result, the player holds the grip 10a of the operating body with one hand or both hands (in the case of a small child), and touches the monitor 2 as necessary to play a game while watching the image displayed on the monitor.

The front end of the grip part of the operating body forms a pedestal 10b that is wide to receive the tip part. The grip part 10a and the rear end part 13 are molded of hard resin, and the two members are formed into a semicircle in the longitudinal direction. The electric wire 14a extended from the connection cord 14 is extended to the light emission part 12 located in the front-end | tip part 11 inside. The tip 11 is made by rotational molding of translucent vinyl chloride with an internal cavity that has a rounded shape that deforms the glove with the child's thumb and other fingers together and widens the internal space. ing. This material includes a diffusing material, and has the property that infrared rays are diffused by the diffusing material.
The diffusion material is realized by uniformly providing a transparent glass having an average particle diameter of 5 to 10 micrometers, a resin layer provided with organic fine beads, and the like. Alternatively, it is composed of a transparent resin sheet.

In the above configuration, when an infrared LED is used for the light emitting portion 12, the infrared light emitted from the infrared LED is irradiated on the inner wall of the tip portion 11, diffused by the diffusion material, and the infrared light transmitted through the tip portion 11 is emitted substantially uniformly from the entire tip portion. To be detected.
Thereby, the light emission of the light emitting unit 12 is diffused by the diffusion material of the tip end part 11 and diffusely reflected inside, and when viewed from the outside, the intensity of the light emission of the entire tip end part is made uniform and does not depend on the direction of the operating body 10.
Furthermore, since the tip portion 11 is made of an elastic material formed by rotational molding, even if the tip portion 11 is hit, it is less likely to break.

The tip portion 11 is fixed by screwing together the molded products on the front and back of the grip portion 10a on the base 10b. A printed circuit board 15 to which the light emitting unit 12 is attached is located from the base 10b to the front side of the grip 10a. The light emitting unit 12 is provided with an LED or the like that emits infrared rays. The printed circuit board 15 is located in the internal space of the front end portion 11, and the light emitting unit 12 provided on the printed circuit board 15 has a certain distance from the inner wall of the front end portion.

Even if the tip 11 is elastically deformed by the moment of collision with the cover body 2a that covers the surface of the monitor when the player touches (hits) the monitor 2 with some force applied to the operation body 10, There is a rotationally molded product (or slush molded product is acceptable) of the tip portion 11 so that the wall thickness portion of the tip portion 11 is only slightly deformed and the impact force does not reach the internal light emitting portion 12 or the printed circuit board 15. Has a wall thickness of Since the tip portion is made by rotational molding, there is no parting line that can be formed when the front and back members are pasted together. Therefore, when the tip portion collides with the cover body 2a of the monitor, it does not break from the pasted surface.

  At this time, the distal end portion 11 of the operating body 10 is provided with a light emitting portion 12 that emits infrared rays and the like, and the distal end of the operating body is attached to the monitor 2 based on the detection signal from the detection sensor 6 on the housing 1 side. There is a coordinate detection means 22 for detecting the touched position.

As the coordinate detection means, light receiving sensors are provided at the four corners of the screen, and two of them capture the infrared light emission at the front position of the screen, and calculate using the principle of triangulation to calculate the infrared light emission position. Is specified to detect the vertical, horizontal, and depth of the screen.
For example, a plurality of detection sensors are provided around the monitor screen disclosed in Japanese Patent Application Laid-Open No. 2005-185740, and light emitted from the light emitting unit of the operating body is detected by the plurality of detecting sensors, and the operating state of the operating body is determined based on the detection state. The position where the light emitting unit is located is calculated and detected. In the detection sensor, the infrared rays emitted from the distal end portion 11 of the operating body 10 are diffused by the diffusing material and come out to the outside, so that it is detected as being emitted substantially uniformly from the entire distal end portion. Therefore, the distance from the monitor 2 can be obtained from the detection area of the light emitting unit.
The detection sensor employed here obtains XYZ coordinate information of the gravity center points of the strong infrared portion and the weak portion.

Alternatively, when the monitor 2 is a projector screen, a camera is arranged on the back side (inside the housing) of the projector screen, thereby photographing the state in which the distal end portion 11 of the operation body 10 emits light. It can be obtained by calculating which position of the monitor 2 is located. Furthermore, the distance from the area of the light emitting surface emitting light to the monitor can be obtained.
The distance represents a short distance from the monitor when the light emitting area is large, and a distance from the monitor when the light emitting area is small.
As a result, an image is displayed on the monitor, so that the player operates the operating body while viewing the projected image, and the light emitted from the light emitting portion of the operating body is detected by the detection sensor, and the corresponding monitor is displayed. Can be detected. Furthermore, the distance between the monitor and the tip of the operating body can be detected from the light area of the tip.

  By the method described above, the light emitting portion provided at the distal end portion of the operating body emits light, and when it diffuses at the distal end portion, infrared rays are emitted from the entire distal end portion, and the area is detected by the coordinate detecting portion. Thus, the depth direction with respect to the monitor can be measured.

FIG. 4 is a side view in which the distal end portion of the operating body of the second embodiment is opened, and FIG. 5 is an exploded perspective view thereof. The protective member which protects a light emission part is provided in the structure substantially the same as FIG. 3, The same number is attached | subjected and demonstrated to the same part.
The operating body 10 has a glove-like tip portion 11 (divided into two hands, that is, a thumb and another finger) imitating a hand at the tip of a rod-like grip portion 10a, and a light emitting portion 12 inside. The rear end portion 13 of the grip portion 10a is formed in a substantially spherical shape so that it does not slide down when held by hand, and a connection cord 14 protrudes from the rear end portion 13 and is attached to the housing 1. It is connected. The length of the connection cord 14 is such a length that the player can hold it in his hand and touch the operation body 10 with some margin in any place on the monitor 2.
As a result, the player holds the grip 10a of the operating body with one hand or both hands (in the case of a small child), and touches the monitor 2 as necessary to play a game while watching the image displayed on the monitor.

The front end of the grip portion 10a of the operating body 10 forms a base 10b that is wide to receive the tip portion. The grip portion 10a and the rear end portion 13 are molded of hard resin, and the two members are half-shaped in the longitudinal direction. It is a molded product divided into circles, and an electric wire 14a extending from the connection cord 14 is extended to the light emitting part 12 located at the tip part 11 inside. The tip 11 has a predetermined shape by rotational molding made of semi-transparent vinyl chloride with an internal cavity that is deformed with a glove in which the child's thumb and other fingers are combined to create a rounded shape with a wide internal space. Made with thickness. This material includes a diffusing material, and has the property that infrared rays are diffused by the diffusing material.
The diffusion material is realized by uniformly providing a transparent glass having an average particle diameter of 5 to 10 micrometers, a resin layer provided with organic fine beads, and the like. Alternatively, it is composed of a transparent resin sheet.

In the above configuration, when an infrared LED is used for the light emitting portion, the infrared light emitted from the infrared LED is irradiated on the inner wall of the tip portion 11, diffused by the diffusion material, and the infrared light transmitted through the tip portion is emitted substantially uniformly from the entire tip portion. Is detected.
Thereby, the light emission of the light emitting unit 12 is diffused by the diffusion material of the tip end part 11 and diffusely reflected inside, and when viewed from the outside, the intensity of the light emission of the entire tip end part is made uniform and does not depend on the direction of the operating body 10.
Furthermore, because the tip is made of an elastic material molded by rotational molding, it is less likely to be damaged even if the tip is hit.

The tip portion 11 is fixed by screwing together the molded products on the back and front of the grip portion 11 at the base 11b. From the pedestal 10b to the front side of the grip 10a, a base 16 provided with a printed circuit board 15 to which a light emitting unit 12 which is an infrared LED is attached is attached. The base 16 is a substantially U-shaped bracket body that reaches from the front side position of the grip portion 10a to the middle of the tip portion 11, and is fixed by screws with the grip portion 10a and the base 10b. A printed circuit board 15 provided with the light emitting portion 12 facing the distal end side of the distal end portion is attached to the upper end of the base 16. Further, a box-shaped protective body 17 is attached to the base 16 so as to cover the light emitting part 12 with a slight gap from the light emitting part 12 provided on the printed circuit board. As the material of the protector 17, for example, transparent hard resin such as transparent polycarbonate, transparent acrylic, or transparent ABS is used.

Thereby, the infrared rays emitted from the infrared LED of the light emitting unit 12 can be transmitted through the protector 17 without causing attenuation by the transparent material. Furthermore, it is preferable to make the thickness of the upper surface 17a of the protective body 17 through which the infrared light is transmitted as thin as possible so that the infrared light does not diffusely reflect inside the protective body when the infrared light passes through the protective body 17. Here, the wall thickness is 2 mm.
The protective body 17 has a certain distance from the inner wall of the tip, and is designed to be a distance that does not normally reach the protective body 17 even if the tip 11 is elastically deformed.

Infrared light from the light emitting unit 12 is attenuated to the upper surface of the protector 17 with minimal attenuation and minimal diffuse reflection, and most of the infrared light passes through the upper surface 17a of the protector and reaches the distal end portion 11. Infrared rays that are irradiated on the inner wall, diffused by a diffusing material, and transmitted through the tip can be detected on the detection side so as to be emitted substantially uniformly from the entire tip.

The protective body 17 is provided in a soft rotational molded article having a diffusing material at the tip 11, and when the player touches (hits) the monitor 2 with a certain amount of force applied to the operating body 10, the monitor 17 is provided. Even when the tip portion 11 is elastically deformed due to the moment of collision with the cover body 2a covering the surface of the surface, only the thick portion of the tip portion 11 is slightly deformed, but the impact force does not reach the protector 17, When an external force of a certain level or more is applied, the protector 17 receives an impact due to its elastic deformation and can prevent the light emitting unit 12 from being broken so as not to reach the internal light emitting unit 12 or the printed circuit board 15. .

The rotationally molded product (or slush molded product is acceptable) of the tip portion 11 has a certain thickness. Since the tip portion is made by rotational molding, there is no parting line that can be formed when the front and back members are pasted together. Therefore, when the tip portion collides with the cover body 2a of the monitor, it does not break from the pasted surface. The distal end portion 11 has a neck-like portion so as to be attached along the inside of the base 10b, and this neck-like portion is also configured by a curved surface so as not to be cracked by an impact force during a touch operation. The distal end portion 11 is fixed to the operating body 10 by covering the neck portion 11a with a screw 18a to a mounting portion 16a attached to the base 16 using a bracket 18, and further covering the base 10b from the front and back.

  With the above configuration, the infrared LED can be protected from external force without reducing the luminance of the infrared LED of the light emitting unit. In addition, by using a transparent resin for the protective body, infrared rays can be transmitted, attenuation is small, and furthermore, the protective member is thinned so as not to cause irregular reflection on the infrared transmission surface of the protective member. The minimum thickness is maintained to maintain the function so that external force does not reach the inner light emitting part. As a result, it is possible to minimize the influence of the irregular reflection of the infrared rays on the infrared transmission part of the protector.

FIG. 6 shows a side view in which a virtual threshold is set in front of the monitor surface. Since the size of the light emitting area can be detected by infrared rays emitted from the entire distal end of the operating body, the input operation to the image displayed on the monitor by the operating body 10 is a virtual surface as a virtual surface before the monitor. By setting F, the operation body can be turned on and off. This virtual threshold value is determined in advance, and an on / off operation is performed with a predetermined value as a boundary.
As a result, the virtual plane F can be set in front of the monitor, and an on / off signal can be sent to the operating body with the virtual plane F as a boundary. The player can perform input without being particularly conscious, without touching the operating body to the monitor, and can perform input operations without damaging the operating body or the monitor.

  The operation body 10 is further provided with a contact sensor such as a mechanical vibration switch, an acceleration sensor, or a microphone for detecting an impact sound in order to reliably detect that the monitor 2 has been touched. The touch of the operating body 10 on the monitor 2 can be detected. This is because it is easier for the player to obtain an input by touching the operating body on the monitor 2.

FIG. 7 shows a diagram of the operating body of the third embodiment and will be described.
The operating body 30 is a sword-shaped input device, the grip portion 31 is a molded product by ABS resin injection molding, and a connection cord 32 is projected from the rear end of the grip portion 31, as in the first embodiment. Connected to the housing side. The collar portion 33 and the blade 34 are formed by rotational molding using a material such as vinyl chloride as in the first embodiment, and a printed circuit board 36 provided with a light emitting portion 35 is provided inside the sword. This light emitting part is provided at two positions on the blade tip side and the grip part side, divided into groups, and each point can be recognized on the detection side by using the frequency of the light emitting part of each group, and the direction of the sword can be determined. . Or it is good also as a system which carries out the time division control of the light emission of each light emission part, and detects each separately. The light-emitting portions 35 may be arranged one at each of the two positions on the tip side and the grip portion side of the sword. To ensure that the sword can be detected in all directions, It is desirable to provide a plurality of light emitting portions over the front and back surfaces.

As a result, the direction of the operating tool 30 relative to the monitor can be obtained, and the posture can be detected and reflected in the generation of the monitor image. For example, if the sword 34 is held at the upper stage, the image can be displayed on the monitor.
Furthermore, since the light emitting part is provided on the tip side of the gripping part even if the player grips the gripping part, the light from the light emitting part is not blocked by the player's movement and can be detected by the detection sensor.

Further, an acceleration sensor 37 that detects the XYZ directions may be provided in the grip portion, and the movement of the sword may be detected by measuring the acceleration in each direction.
As a result, the detection side can detect the direction of the sword because there are a plurality of groups of infrared light emission positions of the sword-type input device for the monitor. By placing infrared LEDs using four different frequencies at two points in the pattern portion, a chamber game that can be cut in a virtual space with only the pattern becomes possible.

  Although not shown in the drawing, a baseball bat, a tennis racket, a golf club, or the like can be used as a virtual sports game that can be obtained by inserting infrared LEDs having different frequencies in two places as in the third embodiment.

The present invention has been described above by the preferred embodiments of the present invention. While the invention has been described with reference to specific embodiments, various modifications and changes may be made to the embodiments without departing from the broad spirit and scope of the invention as defined in the claims. Obviously you can. In other words, the present invention should not be construed as being limited by the details of the specific examples and the accompanying drawings.

It is an external appearance perspective view of the prize acquisition game machine of this invention. It is a side view of the game machine in play. It is a schematic side view of an operating body. FIG. 10 is a side view in which a distal end portion of an operating body of Example 2 is opened. FIG. 6 is an exploded perspective view of an operating body of Example 2. It is the side view which set the virtual threshold value before the monitor surface. 10 is a drawing of an operating body of Example 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Game machine 1 Case 2 Monitor 3 Operation desk place 4 Stump 5 Animal character 5a Waking animal character 5b Sleeping animal character
DESCRIPTION OF SYMBOLS 10 Operation body 11 Front-end | tip part 12 Light emission part 13 Back end part 14 Connection code 15 Printed circuit board 16 Base 17 Protective body 20 Control part 21 Image processing means 22 Coordinate detection means 30 Sword-type input device 31 Grip part 32 Connection code 33 Gutter part 34 Blade part 35 Light emitting part 36 Printed circuit board 37 Acceleration sensor

Claims (5)

The gripping part,
A tip portion having a cavity made of an elastic material including a diffusion material formed by rotational molding provided at the tip of the grip portion;
A light emitting part provided inside the cavity of the tip part;
An operating body comprising: The gripping part,
A tip portion having a cavity made of an elastic material including a diffusion material formed by rotational molding provided at the tip of the grip portion;
A light emitting part provided inside the cavity of the tip part;
An operating body with
A detection sensor for detecting a light beam emitted from the light emitting unit;
A monitor that displays images,
Image processing means for generating an image to be projected on the monitor;
A coordinate detection means for determining the center of the area of the light emitting portion from the light from the light emitting portion of the input device, and for obtaining the corresponding coordinates on the monitor;
A coordinate input device comprising: The gripping part,
A tip portion having a cavity made of an elastic material including a diffusion material formed by rotational molding provided at the tip of the grip portion;
A light emitting part provided inside the cavity of the tip part;
An operating body with
A detection sensor for detecting a light beam emitted from the light emitting unit;
A monitor that displays images,
Image processing means for generating an image to be projected on the monitor;
A coordinate detection means for determining the center of the area of the light emitting portion from the light from the light emitting portion of the input device, and for obtaining the corresponding coordinates on the monitor;
With
Further, the area of the light emitting unit is obtained, a threshold is set according to the size of the predetermined area, and an on / off signal is obtained with the threshold as a boundary.
A coordinate input device characterized by that. In any one of Claims 1 thru | or 3,
The coordinate input device according to claim 1, wherein the light emitting portion of the operating body is provided with a clearance from the light emitting portion on the tip side of the grip portion and covered with a protective body. In any one of Claims 1 thru | or 4,
A coordinate input device characterized in that a plurality of light emitting portions of the operating body are received on the distal end side of the grip portion, and each of them emits light at different times.

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