JP2009223535A - Position input device, contact object, position input method and position input program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and reliably perform specification of input positions of a plurality of contact objects and identification of respective users through the contact objects with which touch input has been performed. <P>SOLUTION: A light emitting element 3 provided on a light guide plate 2 emits light by a control, for example, lighting scanning by a control part 5e, and the light is incident on the light guide plate 2 according a contact to a touch area 2a by an input pen 10. When a light receiving element 4 provided along the light guide plate 2 detects the light caused in scattering of light on the light guide plate 2 by any one of input pens 10 having coloring parts 13a-13d emitting lights differed in wavelength to the touch area 2a, the control part 5e specifies the input position to the touch area 2a by the input pen 10 from the coordinate of the light receiving element 4 in receipt of the scattered light and the coordinate of the light emitting element 3 in, for example, light scattering upon receipt of light by the light receiving element 4, and further identifies the input pen 10 from the wavelength of the received scattered light. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a position input device that inputs position data indicating an input position, a contact object, a position input method, and a position input program.

  Known as a position input device is a touch panel that can operate a personal computer, ATM (Automatic Teller Machine), PDA (Personal Digital Assistant), game machine, etc. by touching the screen with a finger or a dedicated pen. It has been. This touch panel detects the position touched by a finger or a dedicated pen, identifies the position on the panel surface (vertical coordinate position and horizontal coordinate position), and uses the identified position as an input signal (position data) This is given to the various devices described above. In addition, the detection of contact with the panel surface includes a pressure-sensitive type that detects a change in pressure, an electrostatic type that detects an electric signal due to static electricity, and an optical type that combines a light-emitting element and a light-receiving element.

  Here, as an optical method, in Patent Document 1, for example, as shown in FIG. 18, a plurality of light emitting elements 31 and 32 and a plurality of light receiving elements 33 and 34 are opposed to each side of the display surface 30. When the input position to the display surface 30 is recognized by detecting the blocking state of the light emitted from the light emitting elements 31 and 32 that sequentially emit light and incident on the light receiving elements 33 and 34 facing each other, they are adjacent to each other. The light-emitting elements 31 and 32 have proposed a touch panel that does not emit light continuously.

Japanese Patent Application Laid-Open No. 07-20985

  In the optical touch panel disclosed in Patent Document 1 described above, when the light receiving elements 33 and 34 receive light emitted from the facing light emitting elements 31 and 32, the light emitting elements adjacent to the light emitting elements 31 and 32. Since the light emitted from 31 and 32 is not received, even if the touch panel is used in a place where there is a lot of optical noise or the user does not perform touch input accurately, the touch input can be reliably detected without malfunction. It is like that.

  By the way, in such a touch panel, when there are a plurality of contact objects on the same line connecting the light-emitting elements 31 and 32 and the light-receiving elements 33 and 34 that are opposed to each other, or a part of each contact object on the same line. When there is an overlap, there are cases where the input positions of a plurality of contact objects cannot be specified, and there is a problem that each user who has performed touch input cannot be identified.

  That is, in FIG. 18, for example, points A and D, and points B and C, contact points such as fingers or the like at two locations that are not on the same line connecting the light emitting elements 31, 32 and the light receiving elements 33, 34, respectively. If there is, the light from the light emitting elements 31 and 32 reaches the two contact objects, respectively, so that the input position of each contact object can be specified.

  On the other hand, there are contact objects such as fingers at two locations on the same line connecting the light emitting elements 31, 32 and the light receiving elements 33, 34, such as points A and B, points A and C, and points B and D. In some cases, the light from the light emitting elements 31 and 32 reaches each of two contact objects, but the coordinates determined by blocking the light to the light receiving elements 33 and 34 are one coordinate (for example, X coordinate) or other coordinates. (For example, the Y coordinate), and each input position cannot be specified.

  Moreover, for example, when there is a contact object such as a finger at three locations such as point A, point B, and point D, light does not reach either point from the light emitting elements 31 and 32. The input position of the contact object at the point cannot be specified.

  Further, for example, when there are contact objects such as fingers in two places at points that are not on the same line connecting the light emitting elements 31, 32 and the light receiving elements 33, 34, such as point A and point D, point B and point C, As described above, the input position of each contact object can be specified, but when each contact object is based on touch input by a different user, each user cannot be identified. .

  The present invention has been made in view of such a situation, and it is possible to easily and reliably specify the input positions of a plurality of contact objects, and through each contact object on which touch input is performed. It is an object to provide a position input device, a contact object, a position input method, and a position input program that can easily and reliably identify a user.

  The position input device of the present invention is a position input device that inputs position data indicating an input position by a contact object, and has a touch area on one side, and according to contact with the touch object by the contact object In order to discriminate one coordinate with the light guide plate that generates scattered light, the light guide plate is provided in one coordinate direction of the light guide plate or in the entire area corresponding to the touch area on the surface opposite to the touch area of the light guide plate. A light-emitting means for entering light into the light guide plate; a light-receiving means provided along one side of the light guide plate for distinguishing other coordinates; and a light-receiving means capable of receiving the scattered light having a plurality of wavelengths; Control means for performing lighting scanning for partially lighting the means or non-lighting scanning for partially not lighting, the control means, the coordinates when the scattered light is received by the light receiving means, and the light receiving When receiving light The input position to the touch area by the contact object is specified from the coordinates of the light emitting means when the lighting scan or the non-lighting scan is performed, and the contact object is further identified from the wavelength of the received scattered light. It is characterized by that.

  The position input device of the present invention is a position input device that inputs position data indicating an input position by a contact object, and has a touch area on one side, and according to contact with the touch object by the contact object In order to discriminate one coordinate with the light guide plate that generates scattered light, the light guide plate is provided in one coordinate direction of the light guide plate or in the entire area corresponding to the touch area on the surface opposite to the touch area of the light guide plate. A light-emitting means for entering light into the light guide plate; a light-receiving means provided along one side of the light guide plate for distinguishing other coordinates; and a light-receiving means capable of receiving the scattered light having a plurality of wavelengths; Control means for performing lighting scanning for partially lighting the means or non-lighting scanning for partially not lighting, the control means, the coordinates when the scattered light is received by the light receiving means, and the light receiving When receiving light The input position to the touch area by the contact object is specified from the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed, and the contact with the touch area from the wavelength of the received scattered light. It is characterized by identifying the inclination or pressing of an object.

  The position input device of the present invention is a position input device that inputs position data indicating an input position by a contact object, and has a touch area on one side, and according to contact with the touch object by the contact object In order to discriminate one coordinate with the light guide plate that generates scattered light, the light guide plate is provided in one coordinate direction of the light guide plate or in the entire area corresponding to the touch area on the surface opposite to the touch area of the light guide plate. A light-emitting means for entering light into the light guide plate; a light-receiving means provided along one side of the light guide plate for distinguishing other coordinates; and a light-receiving means capable of receiving the scattered light having a plurality of wavelengths; Control means for performing lighting scanning for partially lighting the means or non-lighting scanning for partially not lighting, the control means, the coordinates when the scattered light is received by the light receiving means, and the light receiving When receiving light The input position to the touch area by the contact object is specified from the coordinates of the light emitting means when the lighting scanning or the non-lighting scanning is performed, and further according to the light reception status of the wavelength of the received scattered light A range designated by the contact object is identified.

  Further, the control unit may identify a rotation direction and a rotation angle of the contact object by detecting a change in position of a plurality of wavelengths of the received scattered light.

  The contact object of the present invention is a contact object that comes into contact with a touch area on one side of a light guide plate of a position input device when inputting position data indicating an input position, and a contact portion that comes into contact with the touch area. And a coloring portion that emits light of a predetermined wavelength by light traveling under the contact position of the light guide plate is provided in the contact portion.

  The contact object of the present invention is a contact object that is in contact with a touch area on one surface side of a light guide plate of a position input device when inputting position data indicating an input position, and is a plurality of contacts that are in contact with the touch area. The contact portions are provided with coloring portions that emit light of different wavelengths by light traveling under the contact position of the light guide plate, and each contact portion is provided to be switchable. It is characterized by being.

  The contact object of the present invention is a contact object that comes into contact with a touch area on one side of a light guide plate of a position input device when inputting position data indicating an input position, and a contact portion that comes into contact with the touch area. And the contact portion is provided with concentrically colored portions that emit light of different wavelengths depending on the light traveling under the contact position of the light guide plate, and is contacted according to the inclination of the contact portion with respect to the touch area It is characterized in that light of each wavelength is emitted from the colored portion.

  The contact object of the present invention is a contact object that comes into contact with a touch area on one side of a light guide plate of a position input device when inputting position data indicating an input position, and a contact portion that comes into contact with the touch area. The contact portion has a shape that specifies a range, and the contact portion is provided with a coloring portion that emits light of a predetermined wavelength by light traveling under the contact position of the light guide plate. And

  The contact object of the present invention is a contact object that comes into contact with a touch area on one side of a light guide plate of a position input device when inputting position data indicating an input position, and a contact portion that comes into contact with the touch area. The contact portion has a shape that specifies a range, and the contact portion emits light having a predetermined wavelength or light having different wavelengths by light traveling under the contact position of the light guide plate. Is provided, and the wavelength or shape of light at each of the coloring portions or the combination thereof is formed asymmetry.

  The position input method of the present invention is a position input method for inputting position data indicating an input position by a contact object, and generates scattered light according to the contact by the contact object to the touch area on one side of the light guide plate. In order to discriminate one coordinate, the light guide plate is formed by light emitting means provided in the entire region corresponding to the touch area on one surface of the light guide plate opposite to the touch area in one coordinate direction of the light guide plate. In order to determine the other coordinates, the step of receiving the scattered light of a plurality of wavelengths by the light receiving means provided along one side of the light guide plate, and the control means A step of causing the light emitting means to perform a lighting scan or a non-lighting scan, and by the control means, coordinates when the scattered light is received by the light receiving means, and the lighting scanning or astigmatism when the light receiving means receives light. An input position to the touch area by the contact object is specified from the coordinates of the light emitting means when scanned, and the contact object is further identified from the wavelength of the received scattered light. .

  The position input method of the present invention is a position input method for inputting position data indicating an input position by a contact object, and generates scattered light according to the contact by the contact object to the touch area on one side of the light guide plate. In order to discriminate one coordinate, the light guide plate is formed by light emitting means provided in the entire region corresponding to the touch area on one surface of the light guide plate opposite to the touch area in one coordinate direction of the light guide plate. In order to determine the other coordinates, the step of receiving the scattered light of a plurality of wavelengths by the light receiving means provided along one side of the light guide plate, and the control means A step of causing the light emitting means to perform a lighting scan or a non-lighting scan, and by the control means, coordinates when the scattered light is received by the light receiving means, and the lighting scanning or astigmatism when the light receiving means receives light. The input position to the touch area by the contact object is specified from the coordinates of the light emitting means when scanned, and the tilt or press of the contact object to the touch area is determined from the wavelength of the received scattered light. It is characterized by being identified.

  The position input method of the present invention is a position input method for inputting position data indicating an input position by a contact object, and generates scattered light according to the contact by the contact object to the touch area on one side of the light guide plate. In order to discriminate one coordinate, the light guide plate is formed by light emitting means provided in the entire region corresponding to the touch area on one surface of the light guide plate opposite to the touch area in one coordinate direction of the light guide plate. In order to determine the other coordinates, the step of receiving the scattered light of a plurality of wavelengths by the light receiving means provided along one side of the light guide plate, and the control means A step of causing the light emitting means to perform a lighting scan or a non-lighting scan, and by the control means, coordinates when the scattered light is received by the light receiving means, and the lighting scanning or astigmatism when the light receiving means receives light. The input position to the touch area by the contact object is specified from the coordinates of the light emitting means when scanned, and the range specified by the contact object according to the light reception status of the wavelength of the received scattered light Is identified.

  The position input program of the present invention is a position input program for causing a computer to execute a position input method for inputting position data indicating an input position by a contact object, wherein the contact with the touch area on one side of the light guide plate A scattered light is generated in response to contact with an object, to determine one coordinate in one coordinate direction of the light guide plate or the entire region corresponding to the touch area on the surface side opposite to the touch area of the light guide plate The step of entering light into the light guide plate by the light emitting means provided, and the light receiving means provided along one side of the light guide plate to detect the scattered light having a plurality of wavelengths in order to discriminate other coordinates. A step of receiving light, and a step of lighting scanning or non-lighting scanning of the light emitting means by the control means, and the scattered light is received by the light receiving means by the control means. The input position to the touch area by the contact object is identified from the coordinates of the light and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed at the time of light reception by the light receiving means, and further the light received The contact object is identified from the wavelength of scattered light.

  The position input program of the present invention is a position input program for causing a computer to execute a position input method for inputting position data indicating an input position by a contact object, wherein the contact with the touch area on one side of the light guide plate A scattered light is generated in response to contact with an object, to determine one coordinate in one coordinate direction of the light guide plate or the entire region corresponding to the touch area on the surface side opposite to the touch area of the light guide plate The step of entering light into the light guide plate by the light emitting means provided, and the light receiving means provided along one side of the light guide plate to detect the scattered light having a plurality of wavelengths in order to discriminate other coordinates. A step of receiving light, and a step of lighting scanning or non-lighting scanning of the light emitting means by the control means, and the scattered light is received by the light receiving means by the control means. The input position to the touch area by the contact object is identified from the coordinates of the light and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed at the time of light reception by the light receiving means, and further the light received An inclination or a press of the contact object with respect to the touch area is identified from a wavelength of scattered light.

  The position input program of the present invention is a position input program for causing a computer to execute a position input method for inputting position data indicating an input position by a contact object, wherein the contact with the touch area on one side of the light guide plate A scattered light is generated in response to contact with an object, to determine one coordinate in one coordinate direction of the light guide plate or the entire region corresponding to the touch area on the surface side opposite to the touch area of the light guide plate The step of entering light into the light guide plate by the light emitting means provided, and the light receiving means provided along one side of the light guide plate to detect the scattered light having a plurality of wavelengths in order to discriminate other coordinates. A step of receiving light, and a step of lighting scanning or non-lighting scanning of the light emitting means by the control means, and the scattered light is received by the light receiving means by the control means. The input position to the touch area by the contact object is identified from the coordinates of the light and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed at the time of light reception by the light receiving means, and further the light received A range designated by the contact object is identified according to a light receiving state of a wavelength of scattered light.

  In the position input device, the contact object, the position input method, and the position input program of the present invention, the surface of the light guide plate opposite to the one-coordinate direction of the light guide plate or the touch area on the one surface side of the light guide plate is controlled by the control means, for example, lighting scanning. Light from the light emitting means provided in the entire area corresponding to the touch area of the light is incident on the light guide plate, and scattered light of different wavelengths according to the contact with the touch area by the contact object is the other coordinate direction of the light guide plate. Is received by the light receiving means provided along the light source, from the coordinates when the scattered light is received by the light receiving means, and the coordinates of the light emitting means, for example, turned on and scanned at the time of light reception by the light receiving means, The input position to the touch area by the contact object is specified, and the contact object is identified from the wavelength of the scattered light received.

  According to the position input device, the contact object, the position input method, and the position input program of the present invention, the coordinates when the scattered light is received by the light receiving means by the control means and, for example, the lighting scanning is performed when the light receiving means receives the light. Since the input position to the touch area by the contact object is specified from the coordinates of the light emitting means, and the contact object is identified from the wavelength of the received scattered light, the input position of a plurality of contact objects is specified. Each user can be easily and reliably identified through each contact object that has been touch-inputted.

  In the present embodiment, the light emitting means provided in the entire region corresponding to the touch area on the surface side opposite to the one-coordinate direction of the light guide plate or the touch area on the one surface side of the light guide plate, for example, by controlling the lighting scanning by the control means. When light from the light is incident on the light guide plate and scattered light of different wavelengths according to contact by the contact object to the touch area is received by the light receiving means provided along the other coordinate direction of the light guide plate, The input position to the touch area by the contact object is specified by the control means from the coordinates when the scattered light is received by the light receiving means and the coordinates of the light emitting means that are lighted and scanned when the light receiving means is received, The contact object is identified from the wavelength of the received scattered light.

  In this case, even when there is contact with the touch area by a plurality of contact objects, the light receiving means is light of different wavelengths of the contact objects generated when light is scattered from the light emitting means that has been scanned for lighting on the light guide plate, for example. In order to receive light from the colored part that emits light, the input position of a plurality of contact objects can be easily and reliably specified, and each user can easily and reliably specify the input position of each touch object. Will be identified.

  Here, in the case where the coloring portions that emit light of different wavelengths are provided so as to be switchable to one contact object, various input operations are performed according to the position input situation with one contact object. be able to.

  In addition, when the colored portions that emit light of different wavelengths are provided concentrically on the contact area, light with a wavelength corresponding to the inclination of the contact area with respect to the touch area can be obtained. Can be detected.

  In addition, when the colored parts that emit light of different wavelengths are provided concentrically on the contact part, light with a wavelength according to the pressure of the contact part is obtained, so the pressing force of the contact part against the touch area is detected It becomes possible to do.

  Further, the contact part of the contact object has a shape for specifying a range, for example, a circle, an ellipse, a polygon, a broken line, etc., and light having a predetermined wavelength is transmitted to the contact part below the contact position of the light guide plate. If a colored part that emits light is provided, if the colored part is brought into contact with the touch area, the light emission becomes a ring shape, so it is possible to input a position by specifying a range, for example, to capture a moving character For example, operations such as interfering with a moving character or capturing a character of the same color can be performed. In this case, the contact object may have various shapes such as a bowl shape and a cylindrical shape.

  In addition, the contact part of the contact object has a shape that specifies the range as described above, and a plurality of light beams having a predetermined wavelength or light having different wavelengths are emitted to the contact part by light traveling under the contact position of the light guide plate. When the color development sites are provided, and the wavelength or shape of light at each color development site or the combination thereof is formed asymmetrically, the position change of the light of the wavelength from each color development site can be detected. The rotation direction and the rotation angle of the contact object can be detected.

  Details of the embodiments of the present invention will be described below. FIG. 1 is a view showing an embodiment of the position input device of the present invention, FIG. 2 is a view for explaining an example of an input pen which is a contact object of FIG. 1, and FIG. 3 is a position input of FIG. It is a side view which shows the state in which the apparatus was attached to the display surface.

  First, as shown in FIG. 1, the position input device 1 includes a light guide plate 2, a plurality of light emitting elements 3, a plurality of light receiving elements 4, an input position detection unit 5, and an input pen 10.

  The light guide plate 2 guides light from the plurality of light emitting elements 3, and the surface thereof is a touch area 2a. In addition, as shown in FIG. 3, the light guide plate 2 is provided on the upper surface of the display surface 6 for displaying contents according to the input position to the touch area 2a, for example.

  The light guide plate 2 scatters light traveling under the contact position when the touch area 2a comes into contact with a coloring portion 10a to 10d of a pen tip which is a contact portion described later of the input pen 10. The light guide plate 2 similarly scatters light traveling under the contact position even when a fingertip or the like comes into contact with the touch area 2a. The case where 10a to 10d come into contact will be described.

  Here, the scattering that occurs when the later-described pen tip coloring portions 10a to 10d of the input pen 10 come into contact with the touch area 2a is caused by the pen tip coloring portions 10a to 10d described later of the input pen 10 in the touch area 2a. This is caused by a change in the refractive index at the interface at the contact point. Further, the scattered light due to the scattering becomes light of different wavelengths (hereinafter referred to as colored light) of the coloring portions 10 a to 10 d of the pen tip, which will be described later, of the input pen 10. The details will be described later.

  The plurality of light emitting elements 3 are provided to determine, for example, an X coordinate position which is a coordinate position in one coordinate direction. Further, as shown in FIG. 3, the plurality of light emitting elements 3 are arranged in parallel with the side end face on one side of the light guide plate 2 (the side end face on the lower side in FIG. 1) so that light can enter the light guide plate 2. It is installed.

  And when the light from each light emitting element 3 enters into the light guide plate 2 from the side end face on one side, the light passes through the light guide plate 2 along the incident direction and the opposite side of the touch area 2a. If the color development part 10a-10d of the pen point mentioned later of the input pen 10 contacts the touch area 2a, it will scatter under the contact position.

  The plurality of light receiving elements 4 are provided to determine, for example, a Y coordinate position, which is a coordinate position in another coordinate direction. The plurality of light receiving elements 4 are arranged side by side on the side end surface on the other side of the light guide plate 2 (the side end surface on the right side in FIG. 1) so as to receive light (scattered light) from within the light guide plate 2. ing.

  Here, the other side on which the plurality of light receiving elements 4 are arranged side by side is a side that does not face the one side on which the plurality of light emitting elements 3 are provided. Thereby, each light receiving element 4 is scattered light at a contact point of a later-described pen tip coloring portion 10a to 10d of the input pen 10 in the touch area 2a (a pen tip coloring portion 10a to 10d to be described later of the input pen 10). In this case, scattered light traveling in a direction substantially orthogonal to the traveling direction of the light from the light emitting element 3 is received.

  As the above-described light emitting element 3, for example, an ultraviolet LED having an ultraviolet wavelength (peak emission wavelength) of 200 to 380 nm and a half-value angle of ± 5 ° can be used. In addition, as the light receiving element 4 described above, a phototransistor having a half-value angle of ± 15 ° is used, which can receive light having a wavelength in the visible light region of 380 nm to 780 nm according to the emission color. it can. That is, for example, it is possible to receive light having a wavelength of 625 to 740 nm for red, 500 to 565 nm for green, and 450 to 485 nm for blue.

  As the light guide plate 2, for example, an acrylic plate (refractive index: about 1.49; total reflection angle (critical angle): 42.2 °) can be used. In this case, an incident angle θ described later of the light emitting element 3 can be set to a value close to a critical angle of 42.2 °. Moreover, the thickness of an acrylic board can be set to 2 mm as an example from which a favorable input position sensitivity is obtained.

  The input position detection unit 5 includes a light emitting element driving unit 5a, a light receiving element driving unit 5b, a received light amount measuring unit 5c, an input position data output unit 5d, and a control unit 5e.

  The light emitting element driving unit 5a sequentially turns on the light emitting elements 3 (lighting scanning), for example, under the control of the control unit 5e. Here, when the light emitting elements 3 are sequentially turned on (lighting scanning), the light emitting elements 3 can be sequentially turned on from the rightmost light emitting element 3 in the drawing or sequentially from the leftmost light emitting element 3 in the drawing. Further, when the light emitting elements 3 are sequentially turned on (lighting scanning), a plurality of light emitting elements 3 may be turned on at random. Further, the timing of sequentially lighting (lighting scanning) the light emitting elements 3 can be, for example, when all the light emitting elements 3 are turned on and light is received by any one of the light receiving elements 4.

  Here, for example, when the light emitting elements 3 are sequentially turned on (lighting scanning), all the light emitting elements 3 are once turned off, and then the light emitting elements 3 are sequentially turned on (lighting scanning). Thus, if any light receiving element 4 receives light when any one of the light emitting elements 3 is turned on, the X coordinate position by the light emitting element 3 and the Y coordinate position by the light receiving element 4 are discriminated, and these coordinates are determined. From the position, a single input position (point A or point B), which is a single contact point in the touch area 2a with which a color development portion 10a to 10d of the pen tip (described later) of the input pen 10 comes into contact, is specified. .

  Further, if light is received by a plurality of light receiving elements 4 by sequentially lighting (lighting scanning) the light emitting elements 3, a plurality of X coordinate positions by each light emitting element 3 and a plurality of Y coordinate positions by each light receiving element 4 are discriminated. Thus, a plurality of input positions (points A and B), which are a plurality of contact points in the touch area 2a, are specified. This is because the light receiving elements 4 sequentially receive light according to the sequential lighting (lighting scanning) of the light emitting elements 3 to specify the input positions of the respective contact points.

  In this case, since the light receiving element 4 receives different colored light from the coloring portions 10a to 10d of the pen tip to be described later of the input pen 10, it is possible to identify the input pen 10 from each received visible light peak sensitivity wavelength. it can. Thereby, even if a plurality of users perform touch input with the input pen 10, each user is identified.

  That is, as shown in FIG. 1, even when the later-described pen tip coloring portions 10 a to 10 d of the input pen 10 are simultaneously in contact with the points A to D, the scattered light (the input pen 10 will be described later) under the respective contact positions. Each of the input positions (points A to D) is specified, and from the visible light peak sensitivity wavelength received by the light receiving element 4, respectively. Can be identified.

  Here, in FIG. 1, for example, at the same X coordinate position, a later-described pen tip coloring portion 10 a to 10 d of the input pen 10 is simultaneously in contact with the point B and the point C. Since light is generated, each input position (point B and point C) is specified. Similarly, for example, even at the same Y coordinate position, even if the later-described pen tip coloring portions 10a to 10d of the input pen 10 are in contact with each other at the same time, scattered light is generated under each contact position. Will be.

  For this reason, even if there are a plurality of contact points as well as a single contact point at any position in the touch area 2a, scattered light is generated under each contact position, so that multipoint simultaneous input is possible. In addition, each input pen 10 can be identified from the visible light peak sensitivity wavelength received by the light receiving element 4.

  Note that the scanning of the light emitting elements 3 is not limited to sequential lighting (lighting scanning), and the light emitting elements 3 may be turned off (sequential scanning) sequentially from the rightmost light emitting element 3 in the figure or sequentially from the leftmost light emitting element 3 in the figure. In the same manner as described above, a single input position (any one of points A to D) or a plurality of inputs in the touch area 2a by discriminating a single or a plurality of X coordinate positions and a single or a plurality of Y coordinate positions. It is possible to specify the position (point A to point D).

  That is, in such sequential turn-off (light-off scanning), since all the light-emitting elements 3 are once turned on, if any one of the light-receiving elements 4 receives the above-described scattered light, If the amount of light received by any one of the light receiving elements 4 receiving the scattered light decreases when any of the light emitting elements 3 is turned off, the light emitting element 3 and the light receiving element 4 when the amount of received light decreases. This is because single or plural X coordinate positions and single or plural Y coordinate positions can be discriminated.

  The light receiving element driving unit 5b causes the light receiving elements 4 to perform light receiving operations under the control of the control unit 5e. The received light amount measuring unit 5c measures the received light amount in the light receiving element 4 that has received the above-described scattered light under the control of the control unit 5e. When measuring the amount of received light, for example, by setting a predetermined threshold value and measuring the amount of light when the predetermined threshold value is exceeded, the measurement of the received light amount can be performed more reliably. It can be carried out.

  Further, the threshold value here may be a value capable of receiving visible light peak sensitivity wavelengths of different colored light of the color development portions 10a to 10d of the pen tip, which will be described later, of the input pen 10.

  The input position data output unit 5d includes a single or a plurality of X coordinate positions and a single or a plurality of Y coordinate positions that are discriminated by sequentially turning on (lighting scanning) or sequentially turning off (lighting off scanning) under the control of the control unit 5e. The input position in the touch area 2a specified based on the above and the data for identifying the input pen 10 obtained based on the visible light peak sensitivity wavelength are output.

  The control unit 5e drives the light emitting element driving unit 5a, the light receiving element driving unit 5b, and the received light amount measuring unit 5c described above in order to specify the input position in the touch area 2a and determine the identification of the input pen 10, and The input position data output unit 5d outputs the data for identifying the input pen 10 at the specified or determined single or plural input positions or the single or plural input positions.

  Note that each of the light-emitting element 3 and the light-receiving element 4 described above preferably has directivity because of the necessity of determining the X coordinate position and the Y coordinate position. In addition, the number of the light emitting elements 3 and the light receiving elements 4 may be determined as appropriate according to the use of the position input device 1. By increasing the number of each, the input position in the touch area 2a can be specified. It is possible to increase the resolution when determining the identification of the input pen 10.

  The plurality of light emitting elements 3 may be configured such that one light source can be scanned by a shutter mechanism or the like. Further, the plurality of light receiving elements 4 may be replaced with one line sensor or image sensor so that the Y coordinate position can be identified and the input pen 10 can be identified from the analysis result of the light receiving state.

  As shown in FIG. 2A, the input pen 10 has different ultraviolet light-emitting inks applied or printed on the coloring portions 10a to 10d of the pen tip which is a contact portion. Here, for example, ultraviolet light emitting ink that develops a blue color is applied or printed on the coloring portion 10a, and ultraviolet light emitting ink that develops a red color is applied or printed on the coloring portion 10b, for example, green is colored on the coloring portion 10c. The ultraviolet light emitting ink is applied or printed, and the color emitting portion 10d is coated or printed with, for example, an ultraviolet light emitting ink that colors yellow. In addition, in the coloring portions 10a to 10d, when it is not desired to emit light because it does not affect the display surface 6 at all, color is developed with invisible light such as infrared light and ultraviolet light having different wavelengths. May be.

  Here, as shown in FIG. 2B, when the ultraviolet light from the light emitting element 3 is applied to the coloring portions 10a to 10d of the nib, the light emission corresponding to the respective colored light is emitted from the respective coloring portions 10a to 10d. Will occur.

  Next, the basic principle of the light guide plate 2 of the position input device 1 will be described with reference to FIG. First, as shown in FIG. 4A, when the light emitting element 3 is arranged with the side end 2b of the light guide plate 2 as the incident surface, ultraviolet light emitted from the light emitting element 3 (shown in the case of the incident angle θ in the figure). Is incident on the light guide plate 2 and travels straight through the light guide plate 2 while repeating total reflection.

  The light guide plate 2 has a sufficiently large thickness compared to the wavelength of the incident ultraviolet light, and is incident when the input position is not pointed at the touch area 2a as shown in FIG. The ultraviolet light travels linearly without being scattered in the width direction.

  On the other hand, as shown in FIG. 4B, when the color development portion 10a of the pen tip of the input pen 10 contacts the touch area 2a of the light guide plate 2, the relative refractive index of the light guide plate 2 below the contact point is changed. The incident ultraviolet light is scattered under the contact point. At this time, when the ultraviolet light hits the coloring portion 10a, the coloring portion 10a emits blue light, for example. Then, scattered light (light emitted in blue) traveling in a direction orthogonal to the traveling direction of the ultraviolet light incident on the light guide plate 2 (see FIG. 1) is received by the light receiving element 4.

  Here, in order to increase the sensitivity for specifying the input position in the touch area 2a, it is necessary to ensure that scattered light is generated by the contact of the input pen 10 with, for example, the coloring portion 10a. The higher the number of times, the better. For that purpose, it is preferable to make the light guide plate 2 thin to some extent (about 2 to 5 mm).

  Further, in order to cause the ultraviolet light from the light emitting element 3 to enter the light guide plate 2 from the side end portion 2b of the light guide plate 2, it is incident in accordance with Snell's law determined by the refractive index of the light guide plate 2 and the surrounding refractive index. Incident of light toward the angle θ is required. Therefore, in order to make ultraviolet light enter the light guide plate 2 without loss, as shown in FIG. 4C, the light emitting element 3 is tilted with respect to the end surface of the side end portion 2b by tilting the light emission direction by an incident angle θ. Is preferably arranged.

  In this case, as shown in FIG. 4 (d), if the side end 2b of the light guide plate 2 is inclined according to the incident angle θ, the light emitting direction of the light emitting element 3 and the side end 2b As a result, it is possible to make the ultraviolet light incident on the light guide plate 2 without loss. Further, in order to improve the sensitivity at the contact point in the touch area 2a, as shown in FIG. 4E, ultraviolet light from a plurality of light emitting elements 3 whose angles in the light emitting direction are changed is guided to the light guide plate 2. You may make it inject into.

  Next, with reference to the flowchart of FIG. 5, the specification of the input position of the contact point with the input pen 10 to the touch area 2a will be described. In the following description, it is assumed that when the input position of the contact point in the touch area 2a is determined, the light emitting elements 3 are sequentially turned on (lighting scanning).

  First, when sequential lighting (lighting scanning) is performed by the light emitting elements 3, for example, the leftmost light emitting element 3 is turned on (step S1), and scattered light received by all the light receiving elements 4 (the pen tip of the input pen 10). The different colored lights of the colored portions 10a to 10d) are measured (step S2), and the light emitting element 3 that is turned on is turned off (step S3). Here, it is determined whether or not there is a contact point. If no light is received by all the light receiving elements 4 (step S4: NO), the next light emitting element 3 is turned on (step S5), and the process returns to step S2.

  When the sequential lighting (lighting scanning) as described above is performed on all the light emitting elements 3 (step S4: YES), the light reception data for each light emitting element 3 that is sequentially lighted (lighting scanning) is analyzed (step S6). ), An input position based on the X coordinate position and the Y coordinate position in the touch area 2a is specified (step S7).

  At this time, each input pen 10 is identified from the visible light peak sensitivity wavelength received by the light receiving element 4. In this case, when a plurality of users are performing touch input using the input pen 10 having the color development portions 10a to 10d having different color development light, each user is identified from the visible light peak sensitivity wavelength of each color development light. become.

  Further, for example, as shown in FIG. 6, it is possible for one user to perform touch input using the input pen 10 having different colored light, and in this case, touch input with the left hand or right hand of the user is performed. It is possible to identify whether or not

  Thus, in this embodiment, the light emitting element 3 as the light emitting means provided on the light guide plate 2 emits light by, for example, lighting scanning control by the control unit 5e as the control means, and the light contacts the touch area 2a. By any of the input pens 10 having the coloring portions 13a to 13d that are incident on the light guide plate 2 that generates scattered light in response to contact with the input pen 10 as an object and emit light having different wavelengths to the touch area 2a. When the colored light generated upon scattering by the light guide plate 2 is received by the light receiving element 4 as the light receiving means provided along one side of the light guide plate 2, the control unit 5e receives the scattered light by the light receiving element 4. The input position to the touch area 2a by the input pen 10 is specified from the coordinates of the light and the coordinates of the light-emitting element 3 when the light-receiving element 4 is lighted and scanned, for example. Is, the input pen 10 from further wavelengths of the received scattered light was to be identified.

  By doing in this way, even when there is a contact with the touch area 2a by the plurality of input pens 10, the light receiving element 4 is scattered at the light guide plate 2 by, for example, light from the light emitting element 3 that has been turned on and scanned. Since the colored light from the colored portions 13a to 13d that emit light of different wavelengths of the input pen 10 that is generated is received, the input positions of the plurality of input pens 10 can be easily and reliably specified, and touch input can be performed. Each user can be easily and reliably identified through each input pen 10 performed.

  Further, when each input pen 10 is brought into contact with the touch area 2a, the coloring portions 13a to 13d of each input pen 10 are colored with visible light, so that the user can visually recognize that the input has been made reliably. be able to. Further, the display object on the display surface 6 operated by the user using the input pen 10 is made the same color as the colored light of the colored portions 13a to 13d (for example, the colored portions 13a to 13d by touching the touch area 2a). A bullet having the same color as that of the colored light is displayed on the display surface 6 and is fired), so that the relevance with the display object can be enhanced, and a sense of unity and virtual reality can be produced.

  Further, in this embodiment, by receiving the colored light from the colored portions 13a to 13d that emit light of different wavelengths of the input pen 10, each user can be easily and reliably identified. Therefore, for example, compared with a position input device in which a transmitting unit and a receiving unit are provided on each of the existing tablet side and the position indicator to identify the user, the structure is extremely simple and the cost is low. be able to. Moreover, in the existing position input device, since it is necessary to provide a large number of loop coils on the entire detection surface on the tablet side, there is a problem that it is not possible to overlap without affecting the display surface 6 described above. Since the light guide plate 2 in the embodiment can be formed of a transparent member, even if the light guide plate 2 is overlapped with the display surface 6, the image on the display surface 6 is not affected.

  The light guide plate 2 in the present embodiment scatters the light traveling under the contact position when the color development portions 10a to 10d of the pen tip of the input pen 10 come into contact with the touch area 2a. Is simple, low cost, highly durable, and can be made thin.

  Further, it is only necessary to apply or print ultraviolet light-emitting ink on the coloring portions 10a to 10d of the pen tip of the input pen 10 that is a contact object, and no special mechanism or electronic circuit is required, so that the cost is low. High durability and small size.

  In this embodiment, as described with reference to FIG. 2, the input pen 10 is provided with the coloring portions 10 a to 10 d of the nib having different colored light. However, the present invention is not limited to this example. As described above, it is also possible to obtain a plurality of colored lights with a single input pen 10.

  In this case, as shown in FIG. 7 (a), the input pen 10 is provided with a plurality of changeover switches 11 used in, for example, a three-color ballpoint pen, and the red color as shown in FIG. The coloring portion 10b is pushed out, the yellow coloring portion 10d is pushed out as shown in FIG. 7C, or the blue coloring portion 10a is pushed out as shown in FIG. 7D. it can.

  In addition, in each changeover switch 11, the same color as the colored light of the coloring portions 10a to 10d may be given. In this case, the coloring portions 10a to 10d can be easily selected by the respective changeover switches 11. Become.

  In the present embodiment, the case where the coloring portions 10a to 10d of the pen tip of the input pen 10 are colored has been described. However, the present invention is not limited to this example, and as shown in FIGS. The entire ten nibs may be colored. In this case, as shown on the right side of FIGS. 8A and 8B, the color development sites differ depending on the contact angle of the color development sites 10a to 10d of the entire pen tip with respect to the touch area 2a.

  That is, when the colored portions 10a to 10d of the entire pen nib are brought into contact with the touch area 2a in an inclined manner as compared with the case where the colored portions 10a to 10d of the entire nib are brought into contact with the touch area 2a perpendicularly, the coloring is caused by the pen tip. It will spread in the tilted direction.

  By detecting such a colored portion corresponding to the contact angle of the pen tip, for example, in addition to position input to the touch area 2a, for example, input for instructing the moving direction and movement of the character is also possible. Applicable.

  Further, when the entire pen tip of the input pen 10 is colored, as shown in FIG. 9, it is possible to input in accordance with the contact change of the colored portions 10a to 10d of the entire pen tip in the touch area 2a.

  That is, as shown in FIG. 9A, for example, when the coloring portion 10b is moved from left to right, for example, when the coloring portion 10b is rotated from right to left with one end as a fulcrum, for example, the coloring portion 10b is a fulcrum. For example, in addition to the position input to the touch area 2a, for example, it is also applied to an input for instructing the moving direction and movement of the character in more detail. It becomes possible.

  Further, in this embodiment, the case where the color light of the pen tip of the input pen 10 is one color has been described. However, the present invention is not limited to this example, and the pen tip has a plurality of color lights. Is also possible.

  That is, for example, as shown in FIG. 10A, the pen tip 12 is provided with light emitting portions 12a to 12e that emit different colored light. In this case, as described above, different ultraviolet light emitting inks are applied or printed on the respective light emitting portions 12a to 12e.

  Here, the light emitting part 12a can be red, the light emitting part 12b can be green, the light emitting part 12c can be yellow, the light emitting part 12d can be blue, and the light emitting part 12e can be light blue, for example.

  When the pen tip 12 is brought into perpendicular contact with the touch area 2a, only red color light is obtained as shown in FIG. Further, as shown in FIG. 10B, when the pen tip 12 is slightly tilted and brought into contact with the touch area 2a, red and light blue colored light is obtained. Further, as shown in FIG. 10C, when the pen tip 12 is further tilted and brought into contact with the touch area 2a, light colors of light blue and blue can be obtained.

  In such a configuration, since the number of colored light obtained according to the inclination of the pen tip 12 is different, the inclination of the pen tip 12 can be detected based on the number of colored light.

  Further, with such a configuration, it is possible to detect the strength of the writing pressure. That is, as shown in FIG. 11A, when the pen tip 12 is weakly brought into contact with the touch area 2a vertically, red colored light from the light emitting portion 12b is obtained. Further, as shown in FIG. 11B, when the pen tip 12 is slightly and perpendicularly brought into contact with the touch area 2a, red and light blue colored light from the light emitting portions 12b and 12e can be obtained. Further, as shown in FIG. 11C, when the pen tip 12 is brought into strong contact with the touch area 2a vertically, red, light blue, and blue colored light is obtained by the light emitting portions 12b, 12e, and 12a. .

  Further, in this embodiment, position input by the input pen 10 has been described, but the present invention is not limited to this example, and position input or the like can be performed by a contact object other than the input pen 10.

  That is, as shown in FIG. 12, the contact object is a hollow conical body 13 having a cup upside down, and each of the opening edge portions is colored portions 13 a to 13 d coated or printed with the above-described different ultraviolet light-emitting inks. And Note that the contact object is not limited to the hollow conical body 13 and may be various shapes such as a bowl shape and a cylindrical shape.

  Here, it is assumed that the coloring portion 13a develops blue, for example, the coloring portion 13b develops red, for example, the coloring portion 13c develops green, for example, and the coloring portion 13d develops yellow, for example. To do. Further, each of the coloring portions 13a to 13d may have any shape that specifies a range, and is not limited to a circular shape as illustrated, for example, and may be an elliptical shape, a polygonal shape, a broken line shape, or the like.

  In such a hollow cone 13, when each of the coloring portions 13 a to 13 d is brought into contact with the touch area 2 a, the light emission becomes a ring shape, so that a position can be input by designating a range. For example, FIG. The moving character 14c is captured as shown in a), the moving character 14c is disturbed as shown in FIG. 13B, for example, and the characters 14a and 14b of the same color as shown in FIG. Operation such as catching is possible.

  Further, in such an operation using the hollow conical body 13, for example, as shown in FIG. 14A, the light guide plate 13a to 13d side of the hollow conical body 13 is brought into contact with the touch area 2a. A plurality of hollow conical bodies 13 are placed on 2. Then, the moving character 14c as shown in FIG. 13A is captured, the moving character 14c is interrupted as shown in FIG. 13B, or the characters 14a and 14b of the same color as shown in FIG. When catching, as shown in FIG.14 (b), any hollow cone 13 is moved.

  In FIG. 14B, the number of users is one, but a plurality of users can simultaneously operate the respective hollow cones 13.

  Moreover, in FIG. 12, although it is set as the case where the ultraviolet emission ink which emits the light of a respectively different wavelength is apply | coated or printed to the color development site | parts 13a-13d of each hollow cone 13, it is not restricted to this example but one hollow You may make it provide the several color development site | parts 13a-13d in the opening edge part of the cone-shaped body 13. FIG.

  That is, as shown in FIG. 15A, at the opening edge of one hollow cone 13, for example, a coloring portion 13 a that develops blue, a coloring portion 13 b that develops red, for example, and green, for example, green. Color developing part 13c, color developing part 13d that develops yellow, for example, color developing part 13e that develops light blue, color developing part 13f that develops dark green, color developing part 13g that develops purple, for example, and light brown, for example And a coloring portion 13h to be provided. In addition, although the eight color development sites 13a to 13h are provided here, the number is not limited to eight, and may be less than eight or may be eight or more.

  In such a hollow cone 13, the hollow cone 13 is rotated counterclockwise as shown in FIG. 15 (b) or clockwise as shown in FIG. 15 (c). The rotation direction and rotation angle can be detected.

  In each of the above embodiments, a plurality of light emitting elements 3 are provided along one coordinate direction of the light guide plate 2, and scattered light from below the contact position due to, for example, the input pen 10 touching the touch area 2 a of the light guide plate 2. Has been described as being received by a plurality of light receiving elements 4 arranged in parallel on the side end face on the other side of the light guide plate 2 (the side end face on the right side in FIG. 1). For example, even if the light guide plate 2 is superimposed on a display surface that displays content corresponding to the input position to the touch area 2a, the image on the display surface 6 is not affected. . In this case, the light from each of the light emitting elements 3 may be infrared light that is invisible light that does not affect the image on the display surface 6 like the ultraviolet light.

  Further, in each of the above embodiments, the case where the plurality of light emitting elements 3 are provided along one coordinate direction of the light guide plate 2 is described, but not limited to this example, as shown in FIGS. 16 and 17A. In addition, the plurality of light emitting elements 3 may be provided in the entire region corresponding to the touch area 2 a on the surface opposite to the touch area 2 a on the one surface side of the light guide plate 2. In this case, as shown in FIG. 17B, each light emitting element 3 may be a surface light emitting member 3A such as a transparent EL.

  The present invention is applicable to input devices such as game machines, PDAs, mobile phones, ATMs, ticket vending machines, information processing devices such as PCs (personal computers), map display devices such as car navigation systems, and the like.

It is a figure which shows one Example of the position input device of this invention. It is a figure for demonstrating an example of the input pen which is a contact thing of FIG. It is a side view which shows the state in which the position input device of FIG. 1 was attached to the display surface. It is a figure for demonstrating the basic principle of the light-guide plate of the position input device of FIG. It is a flowchart for demonstrating specification of the input position of the contact point with the input pen with respect to the touch area in the position input device of FIG. It is a figure for demonstrating an example of the operation method by the input pen to the touch area in the position input device of FIG. It is a figure which shows the other input pen at the time of changing the structure of the input pen of FIG. It is a figure which shows the other input pen at the time of changing the structure of the pen point of the input pen of FIG. It is a figure for demonstrating the example of operation by the input pen of FIG. It is a figure which shows the other input pen at the time of changing the structure of the pen point of the input pen of FIG. It is a figure for demonstrating the example of operation by the input pen of FIG. It is a figure for demonstrating the other contact thing at the time of changing the structure of the input pen of FIG. It is a figure for demonstrating the example of operation by the contact thing of FIG. It is a figure for demonstrating the example of operation by the contact thing of FIG. It is a figure for demonstrating the other contact thing at the time of changing the structure of the contact thing of FIG. It is a side view for demonstrating the other Example at the time of changing the structure of the position input device of FIG. It is a side view for demonstrating the other Example at the time of changing the structure of the position input device of FIG. It is a top view for demonstrating the conventional optical touch panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Position input device 2 Light guide plate 2a Touch area 2b Side edge 3 Light emitting element 4 Light receiving element 5 Input position detection part 5a Light emitting element drive part 5b Light receiving element drive part 5c Light reception amount measurement part 5d Input position data output part 5e Control part 6 Display surface 10 Input pens 10a to 10d Color development site 11 Changeover switch 12 Pen tip 12a to 12e Light emission site 13 Hollow cone 13a to 13h Color development site

Claims (15)

A position input device for inputting position data indicating an input position by a contact object,
A light guide plate having a touch area on one side and generating scattered light in response to contact with the touch object on the touch area;
In order to discriminate one coordinate, the light guide plate is provided in one coordinate direction of the light guide plate or in the entire region corresponding to the touch area on the surface opposite to the touch area of the light guide plate, and light is incident on the light guide plate. A light emitting means for
In order to determine other coordinates, a light receiving means provided along one side of the light guide plate and capable of receiving the scattered light having a plurality of wavelengths;
Control means for performing lighting scanning for partially lighting the light emitting means or non-lighting scanning for partially non-lighting,
The control means uses the contact object from the coordinates when the scattered light is received by the light receiving means and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light. An input position to the touch area is specified, and the contact object is identified from the wavelength of the received scattered light. A position input device for inputting position data indicating an input position by a contact object,
A light guide plate having a touch area on one side and generating scattered light in response to contact with the touch object on the touch area;
In order to discriminate one coordinate, the light guide plate is provided in one coordinate direction of the light guide plate or in the entire region corresponding to the touch area on the surface opposite to the touch area of the light guide plate, and light is incident on the light guide plate. A light emitting means for
In order to determine other coordinates, a light receiving means provided along one side of the light guide plate and capable of receiving the scattered light having a plurality of wavelengths;
Control means for performing lighting scanning for partially lighting the light emitting means or non-lighting scanning for partially non-lighting,
The control means uses the contact object from the coordinates when the scattered light is received by the light receiving means and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light. An input position to the touch area is specified, and a tilt or a press of the contact object with respect to the touch area is identified from a wavelength of the received scattered light. A position input device for inputting position data indicating an input position by a contact object,
A light guide plate having a touch area on one side and generating scattered light in response to contact with the touch object on the touch area;
In order to discriminate one coordinate, the light guide plate is provided in one coordinate direction of the light guide plate or in the entire region corresponding to the touch area on the surface opposite to the touch area of the light guide plate, and light is incident on the light guide plate. A light emitting means for
In order to determine other coordinates, a light receiving means provided along one side of the light guide plate and capable of receiving the scattered light having a plurality of wavelengths;
Control means for performing lighting scanning for partially lighting the light emitting means or non-lighting scanning for partially non-lighting,
The control means uses the contact object from the coordinates when the scattered light is received by the light receiving means and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light. An input position to the touch area is specified, and a range designated by the contact object is identified according to a light reception state of the wavelength of the received scattered light.   The position input device according to claim 3, wherein the control unit identifies a rotation direction and a rotation angle of the contact object by detecting a change in position of a plurality of wavelengths of the received scattered light. . When the position data indicating the input position is input, the contact object is in contact with the touch area on one side of the light guide plate of the position input device,
A contact portion that is in contact with the touch area;
A contact object, wherein the contact portion is provided with a coloring portion that emits light of a predetermined wavelength by light traveling under a contact position of the light guide plate. When the position data indicating the input position is input, the contact object is in contact with the touch area on one side of the light guide plate of the position input device,
Having a plurality of contact portions to be in contact with the touch area;
These contact portions are provided with colored portions that emit light of different wavelengths depending on the light traveling under the contact position of the light guide plate,
Furthermore, each contact part is provided so that switching is possible, The contact thing characterized by the above-mentioned. When the position data indicating the input position is input, the contact object is in contact with the touch area on one side of the light guide plate of the position input device,
A contact portion that is in contact with the touch area;
The contact portion is provided with concentrically colored portions that emit light of different wavelengths depending on the light traveling under the contact position of the light guide plate,
The contact object according to claim 1, wherein light of each wavelength is emitted from the coloring portion that is contacted according to the inclination of the contact portion with respect to the touch area. When the position data indicating the input position is input, the contact object is in contact with the touch area on one side of the light guide plate of the position input device,
A contact portion that is in contact with the touch area;
The contact portion has a shape that specifies a range,
Further, the contact portion is provided with a coloring portion that emits light of a predetermined wavelength by light traveling under the contact position of the light guide plate. When the position data indicating the input position is input, the contact object is in contact with the touch area on one side of the light guide plate of the position input device,
A contact portion that is in contact with the touch area;
The contact portion has a shape that specifies a range,
Further, the contact portion is provided with a plurality of coloring portions that emit light of a predetermined wavelength or light of different wavelengths by light traveling under the contact position of the light guide plate,
A contact object characterized in that the wavelength or shape of light at each of the color development sites or a combination thereof is formed asymmetrically. A position input method for inputting position data indicating an input position by a contact object,
The scattered light is generated in response to the contact by the contact with the touch area on one side of the light guide plate. In order to determine one coordinate, the coordinate direction of the light guide plate is opposite to the touch area of the light guide plate. A step of causing light to enter the light guide plate by light emitting means provided in the entire area corresponding to the touch area on the surface side;
In order to determine other coordinates, a step of receiving the scattered light of a plurality of wavelengths by a light receiving means provided along one side of the light guide plate;
A step of lighting scanning or non-lighting scanning of the light emitting means by a control means,
From the coordinates when the scattered light is received by the light receiving means by the control means, and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light, the contact means An input position to the touch area is specified, and the contact object is identified from the wavelength of the received scattered light. A position input method for inputting position data indicating an input position by a contact object,
The scattered light is generated in response to the contact by the contact with the touch area on one side of the light guide plate. In order to determine one coordinate, the coordinate direction of the light guide plate is opposite to the touch area of the light guide plate. A step of causing light to enter the light guide plate by light emitting means provided in the entire area corresponding to the touch area on the surface side;
In order to determine other coordinates, a step of receiving the scattered light of a plurality of wavelengths by a light receiving means provided along one side of the light guide plate;
A step of lighting scanning or non-lighting scanning of the light emitting means by a control means,
From the coordinates when the scattered light is received by the light receiving means by the control means, and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light, the contact means A position input method, wherein an input position to the touch area is specified, and further, an inclination or a press of the contact object with respect to the touch area is identified from a wavelength of the received scattered light. A position input method for inputting position data indicating an input position by a contact object,
The scattered light is generated in response to the contact by the contact with the touch area on one side of the light guide plate. In order to determine one coordinate, the coordinate direction of the light guide plate is opposite to the touch area of the light guide plate. A step of causing light to enter the light guide plate by light emitting means provided in the entire area corresponding to the touch area on the surface side;
In order to determine other coordinates, a step of receiving the scattered light of a plurality of wavelengths by a light receiving means provided along one side of the light guide plate;
A step of lighting scanning or non-lighting scanning of the light emitting means by a control means,
From the coordinates when the scattered light is received by the light receiving means by the control means, and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light, the contact means The position input method is characterized in that an input position to the touch area is specified, and a range designated by the contact object is identified according to a light reception state of the wavelength of the received scattered light. A position input program for causing a computer to execute a position input method for inputting position data indicating an input position by a contact object,
The scattered light is generated in response to the contact by the contact with the touch area on one side of the light guide plate. In order to determine one coordinate, the coordinate direction of the light guide plate is opposite to the touch area of the light guide plate. A step of causing light to enter the light guide plate by light emitting means provided in the entire area corresponding to the touch area on the surface side;
In order to determine other coordinates, a step of receiving the scattered light of a plurality of wavelengths by a light receiving means provided along one side of the light guide plate;
A step of lighting scanning or non-lighting scanning of the light emitting means by a control means,
From the coordinates when the scattered light is received by the light receiving means by the control means, and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light, the contact means An input position to the touch area is specified, and further, the contact object is identified from the wavelength of the received scattered light. A position input program for causing a computer to execute a position input method for inputting position data indicating an input position by a contact object,
The scattered light is generated in response to the contact by the contact with the touch area on one side of the light guide plate. In order to determine one coordinate, the coordinate direction of the light guide plate is opposite to the touch area of the light guide plate. A step of causing light to enter the light guide plate by light emitting means provided in the entire area corresponding to the touch area on the surface side;
In order to determine other coordinates, a step of receiving the scattered light of a plurality of wavelengths by a light receiving means provided along one side of the light guide plate;
A step of lighting scanning or non-lighting scanning of the light emitting means by a control means,
From the coordinates when the scattered light is received by the light receiving means by the control means, and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light, the contact means An input position to the touch area is specified, and a tilt or a pressure of the contact object with respect to the touch area is identified from a wavelength of the received scattered light. A position input program for causing a computer to execute a position input method for inputting position data indicating an input position by a contact object,
The scattered light is generated in response to the contact by the contact with the touch area on one side of the light guide plate. In order to determine one coordinate, the coordinate direction of the light guide plate is opposite to the touch area of the light guide plate. A step of causing light to enter the light guide plate by light emitting means provided in the entire area corresponding to the touch area on the surface side;
In order to determine other coordinates, a step of receiving the scattered light of a plurality of wavelengths by a light receiving means provided along one side of the light guide plate;
A step of lighting scanning or non-lighting scanning of the light emitting means by a control means,
From the coordinates when the scattered light is received by the light receiving means by the control means, and the coordinates of the light emitting means when the lighting scanning or non-lighting scanning is performed when the light receiving means receives light, the contact means An input position to the touch area is specified, and a range designated by the contact object is identified according to a light reception state of the wavelength of the received scattered light.

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