JP2002259040A - Output device for optical coordinate information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical coordinate information output device of high precision, which accurately detects a position pointed by a coordinate pointing member, namely, the position of a pointing part of this member to output its coordinate information. SOLUTION: The coordinate information output device has a position detecting part, having an angle detection means which receives light from a coordinate pointing member 3, on which a light-emitting element is mounted for detecting the incidence angle of incident light in accordance with light intensity information on the light receiving element, and this device is comprised of a means which throws prescribed light from two or more different parts above the coordinate pointing member 3, a light detection means which is arranged in a prescribed position and receives thrown light to detect the direction of incidence of thrown light, and an operation means which calculates the direction of incidence from the light intensity information of the light detection means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for acquiring input information on a paper surface, or for instructing movement of a cursor or the like on a screen or inputting stroke data on a personal computer, an amusement input device, a portable terminal or the like. The present invention relates to a coordinate input device capable of inputting to a two-dimensional coordinate area.

[0002]

2. Description of the Related Art Conventionally, as a coordinate input device capable of inputting data into such a two-dimensional coordinate area, an optical coordinate information output device which mounts a light source on a coordinate indicating member and reads the position thereof is known.
There is a method disclosed in JP-A-05-01954. In this device, an infrared signal is emitted from an infrared light emitting element provided on a moving body, and is received by two angle detectors including a lens provided on an operation table and a CCD image line sensor, and is incident from an image forming position on the CCD. The angle is calculated and the coordinate position is detected using the principle of triangulation.

A coordinate information output device previously developed by the present applicant is installed on a coordinate input surface such as a paper surface or an LCD at a position facing a coordinate pointing member of an operator, and a light source is provided on the coordinate pointing member. Installed, a central processing unit for controlling at least three angle detecting means, various calculations and each unit,
And a storage means for storing the calculation results and the like, the light source position of the coordinate indicating member is measured using the principle of triangulation, and the coordinate value of the indicated portion is estimated based on the obtained measurement data. . However, since the position of the attached light source is determined not directly in the actual pointing part but in the conventional technique or in this method directly, an error corresponding to the actual pointing part occurs. Is inevitable in principle. Incidentally, in the method of the prior art shown in FIG. 9, the position of the light source can be determined, but the pointing portion, for example, a pen-shaped pointing member, that is, the pen tip cannot be specified accurately. For this reason, there are problems such as a shift in the input position and a shift between the designated icon and the designated portion on the display screen, which impairs operability.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem, and to accurately detect a position indicated by a coordinate indicating member, that is, a position of an indicating portion of the member, and obtain coordinate information of the position. It is another object of the present invention to provide a high-precision optical coordinate information output device for outputting an image, and to provide the device that satisfies the condition of being small and inexpensive.

[0005]

According to a first aspect of the present invention, there is provided an angle detecting means for receiving light from a coordinate indicating member on which a light emitting element is mounted and detecting an incident angle of incident light from light intensity information on the light receiving element. In the coordinate information output device comprising a position detection unit having a means for irradiating predetermined light from two or more different parts on the coordinate indicating member, receiving the irradiation light,
At least two direction detection units each including: a light detection unit disposed at a predetermined position for detecting the incident direction of the irradiation light; and a calculation unit that calculates the incident direction from light intensity information of the light detection unit. Means for storing relative position information between the positions of two or more light irradiating means on the coordinate indicating member and the coordinate indicating part of the coordinate indicating member; and the incident direction information and the direction detection Calculating means for calculating the emission position from the position information of the means, and calculating means for calculating the designated coordinate position based on the relative position information between the emission position information, the emission position and the coordinate designated part. An optical coordinate information output device comprising:

According to a second aspect of the present invention, in the optical coordinate information output device according to the first aspect, means for exclusively turning on a light source disposed at a predetermined position of the two or more coordinate indicating members. Having. According to a third aspect of the present invention, in the optical coordinate information output device according to the first or second aspect, the irradiation light of the coordinate pointing member is irradiated substantially all around from a predetermined portion of the coordinate pointing member. The light source unit was configured as follows. According to a fourth aspect of the present invention, in the optical coordinate information output device according to the first to third aspects, the correspondence stored in the storage means from a measurement calculation result of a light emitting position of the coordinate pointing member that has designated a predetermined position. Means for specifying the relative positional relationship to be performed is provided. According to a fifth aspect of the present invention, in the optical coordinate information output device according to any one of the first to fourth aspects, at least one of a relative position of the emission position or the emission position stored in the storage means and the coordinate designation portion. Means are provided for enabling at least one of the relative positional data to be rewritten. According to a sixth aspect of the present invention, in the optical coordinate information output device according to any one of the first to fifth aspects, power is supplied to a light emitting element as the light irradiating means by detecting that the coordinate pointing member has contacted a coordinate input plane. And means for emitting light.

According to a seventh aspect of the present invention, in the optical coordinate information output device according to the first to sixth aspects, the incident direction detecting means has a light receiving element group arranged in a predetermined pattern at a predetermined distance from the opening. And determining means for determining the incident direction from the light intensity pattern information of the light receiving element group. According to an eighth aspect of the present invention, in the optical coordinate information output device according to any one of the first to seventh aspects, an operation unit for instructing a predetermined operation on at least one of the coordinate instruction members and an operation of the operation unit are provided. And a transmission unit that generates a predetermined wireless signal in accordance with the
Means for receiving a signal from the transmitting unit and outputting a predetermined signal to a subsequent device.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical coordinate information output device according to the present invention receives a light from a coordinate pointing member equipped with a light emitting element and determines a position of the coordinate pointing member for designating coordinate information, and a light intensity on the light receiving element. Conventionally, in a coordinate information output device including a position detection unit having an angle detection unit that detects an incident angle of incident light from information, conventionally, in order to grasp a position pointed by a coordinate pointing member, the position of the pointing unit of the member is directly detected. Instead, since the position of the light emitting element attached to the member is detected, an accurate pointing position cannot be detected. Therefore, in the present invention, basically, the position of the light emitting element attached to the coordinate pointing member is detected, the position of the pointing portion of the member is determined based on the position information, and the coordinate information is output. . Specifically, means (light source) for irradiating predetermined light to two or more different portions on the coordinate indicating member is arranged, and the predetermined position around the coordinate plane receives the irradiation light, and the irradiation light is received. At least two direction detecting means for detecting the direction of incidence of light are arranged. The direction detecting means includes a large number of light detecting means arranged two-dimensionally, and includes a calculating means for calculating the incident direction of the irradiation light from the light intensity distribution information from the light detecting means. Further, the apparatus of the present invention includes storage means and calculation means, and the storage means has a relative position between two or more light sources on the coordinate pointing member and a coordinate pointing part of the coordinate pointing member. The information is grasped and stored in advance, and the calculating means calculates and determines the coordinate positions of the plurality of light sources from the incident direction information detected by the plurality of direction detecting means. Further, the calculating means obtains absolute coordinate position information, that is, the absolute coordinate position information of the coordinate pointing part from the absolute coordinate position information of the plurality of light sources and the relative position storage information between the light source positions and the coordinate pointing part. This is to execute an operation for determining an accurate designated coordinate position.

According to a second aspect of the present invention, in the above-mentioned optical coordinate information output device, when one or more light sources arranged at predetermined positions of the two or more coordinate indicating members are turned on. Are exclusively turned on such that other light sources are turned off so that it is possible to identify which light source the light is coming from. Since the exclusive lighting means has a technical significance in being identifiable, the exclusive lighting means is not limited to blinking sequentially, but may have a different blinking frequency depending on the light source. According to a third aspect of the present invention, in the coordinate information output device, the light source unit is configured such that the irradiation light of the coordinate indicating member is emitted from a predetermined portion of the coordinate indicating member substantially all around. I did it. This means that no matter where the coordinate pointing member is,
This is a configuration in which the position information detection calculation can be executed stably even in the inclined state. According to a fourth aspect of the present invention, in the optical coordinate information output device, the positions of two or more light irradiation units on the coordinate indicating member to be stored in the storage unit and the coordinate indicating of the coordinate indicating member. The light emitting position (light source position) of the coordinate pointing member is determined by using the optical coordinate information output device of the present invention in a state where the relative positional relationship with the part is designated by the coordinate pointing member.
Is executed, and relative position information is specified from the resulting position information and the information on the predetermined position. The relative position information can be obtained directly from this method, not from the design information.
Even if there is, it is not affected by it.

According to a fifth aspect of the present invention, in the optical coordinate information output device, a relative position of the emission position or at least one of the emission positions stored in the storage means and a relative position of the coordinate designation portion. Means are provided for making at least one of the data in any of the various positional relationships rewritable. The relative position information is equal to the number of light sources plus one, and has a configuration capable of correcting when any one of the light sources is relatively displaced.
According to a sixth aspect of the present invention, in the optical coordinate information output device, power is supplied to a light emitting element as the light irradiating means by detecting that the coordinate indicating member has contacted a coordinate input plane. A means for emitting light is provided. In this configuration, the light irradiating means does not need to constantly irradiate light, and may irradiate when position detection is required, that is, when the coordinate pointing member contacts a coordinate input plane,
When the coordinate indicating member contacts the coordinate input plane, power is supplied to the light emitting element as the light irradiating means. As a result, power can be saved without wasting power.

According to a seventh aspect of the present invention, in the optical coordinate information output device, the incident direction detecting means has a light receiving element group arranged in a predetermined pattern at a predetermined distance from the opening. A determination unit is provided for determining the incident direction from the light intensity pattern information of the element group. That is, the irradiation light from the light source passes through the opening of the incident direction detecting means, which is a light receiving unit, and is received by a light receiving element group two-dimensionally arranged in a predetermined pattern at a predetermined distance from the opening. The position of the light spot can be detected from the light intensity pattern information of the light receiving element group, and the incident direction of the light hitting the light source can be determined. The invention according to claim 8, in the optical coordinate information output device, an operation unit for instructing a predetermined operation on at least one of the coordinate instruction members,
A transmission unit that generates a predetermined wireless signal in accordance with the operation of the operation unit, and a unit that receives a signal from the transmission unit and outputs a predetermined signal to a connected next-stage device. It is. With this configuration, it is possible to notify another operation instruction to the next device at the same time as outputting the coordinate information, and the graphical user interface (GUI) of the information device can be provided.
Can be performed by the present apparatus.

[0012]

Embodiment 1 A coordinate output device 1 according to this embodiment is provided on a coordinate input surface 2 which is a display surface such as a paper surface or an LCD or CRT as shown in FIG. Will be installed. As shown in detail in FIG. 2, the coordinate pointing member 3 includes two light irradiators (6a, 6a,
6b), and two incident direction detecting means 4, 5
(They are composed of photodetectors 4a and 5a and arithmetic units 4b and 5b, respectively), a central processing unit 8 for controlling various operations and each unit, and a storage for storing operation results and various data. And a system for measuring the positions of the two light irradiation portions of the coordinate indicating member 3 using the principle of triangulation.

The operation will be described below. In this embodiment, when the operator designates desired coordinates on the coordinate input surface 2 with the pen tip 11 while holding the pen-shaped coordinate indicating member 3, 2
The reference light beams from the two light sources 12 and 13 are alternately turned on and emitted from the coordinate indicating member 3. As shown in FIG. 2, the coordinate pointing member 3 according to the present embodiment includes two light sources 12 and 13 which are basically made up of LDs or LEDs, and when the coordinate pointing member 3 is brought into contact with a coordinate input surface, Light source 12, 13
From the light irradiators 6a and 6b, and includes a control circuit 10 for controlling the light sources 12 and 13, a battery, and the like. And a power supply (not shown). The one shown by a broken line on the right side of FIG. 2 shows the relative positional relationship between the two light sources 12 and 13 and the coordinate pointing part (pen tip) 11. The light source may be turned on by a main switch (not shown) provided on the coordinate indicating member. However, as shown in FIG. 3, a pen tip is provided on the coordinate input surface in consideration of an energy saving effect and erroneous detection. By providing a mechanism 15 for turning on the switch by the pressure sensor or the mechanical displacement of the movable member when the portion 11 comes into contact, the configuration is such that the coordinate indicating member 3 detects the contact with the coordinate input surface and turns on. Is also good. In this embodiment, the two light sources 12 and 13 are alternately and exclusively turned on in order to identify the positions from the two light irradiation units. Irradiation light emitted from the light irradiators 6a and 6b in almost all directions is received by the incident direction detecting means 4 and 5 to calculate a direction vector of the irradiating light, and position information of the incident direction detecting means is calculated. The positions of the two light irradiation units 6a and 6b are calculated based on the above.

Next, the principle of the measuring system according to the present invention will be described with reference to FIG. In the present invention, the coordinate input surface 2 is set to X
When the plane is a Z plane, low-aberration lenses L ₁ and L ₂ are arranged so that the lens center is located at a known position around the coordinate input plane 2, and are separated by the focal length f of the lens and are parallel to the XY plane. Each has two position detection elements (PSD and CCD)
An image sensor or the like is installed such that the center of the light receiving surface is on the optical axis of the lens, and light B _ij (i = 1,2 j) from the two light irradiation units 6a and 6b of the coordinate indicating member 3 = 1, 2, and i respectively correspond to the light irradiating section, and j corresponds to the light detecting means for receiving light). Assuming that the lenses L ₁ and L ₂ are ideal, the present optical system allows the irradiation optical systems 61 and 62 of the respective light sources to be used.
The incident angle of the irradiation light _{Bij on} the lens is determined by the upper beam emission position. For example, when a two-dimensional PSD is used as the position detecting element, the ratio of the addition / subtraction value of a predetermined output current value to the sum of the output current values of the element,
In the case of a two-dimensional image sensor such as D, the spot position of the incident light can be determined by detecting the intensity peak position from the spatial intensity information of part or all of the two-dimensional received light intensity pattern It is.

Now, the spot point on the position detecting element
To P_ij (i = 1,2, j = 1,2, i is the light irradiation
And j corresponds to the incident light detecting means, respectively)
Then, for example, the point P₁₁On the position detection element
As shown in FIG. 5, the local coordinates on the position detecting element
The center is on the lens optical axis, the x 'axis of the local coordinate axis, and
In a coordinate system that takes the y 'axis parallel to the X and Y coordinates of the spatial coordinates
Center point P of spot₁₁The local coordinates of (xp
₁, Yp₁), Ray B₁₁Incident vector V
₁₁(Point P₁₁And lens L₁Vector connecting the center points of
Represent. ) Is the angle between the Z axis and θ₁, XY plane in the spatial coordinate system
Angle between the in-plane X axis and φ₁Is calculated as
It is. V₁₁= (Sinθ₁cosφ, sinθ₁sinφ₁ , Cos
θ₁) However, f ・ tanθ₁= √ (xp₁ ^Two+ yp₁ ^Two) tanφ₁= Y
p₁/ xp₁ In a similar manner, the ray B₁₂Incident vector V at
₁₂Is also calculated. Next, the position on the spatial coordinates of the lens center
L₁, L₂Then, ray B₁₁And B_{1 2}Intersection M of
₁(Position of light irradiation part 6a) is a straight line OL₁+ TV₁₁And a straight line
OL₂+ KV ₁₂(Where t and k are arbitrary real numbers)
Given as an intersection. Actually due to measurement error etc.
Intersection M from the closest point of the line₁From the
Each point is Q₁₁, Q₁₂In other words, Q₁₁Q
₁₂⊥ (OL₁+ TV₁₁) And Q₁₁Q₁₂⊥ (OL
₂+ KV₁₂) To determine the value of t or k
And return to In other words, solving the following simultaneous equations
The intersection M₁The three-dimensional coordinates of are obtained. V₁₁・ Q₁₁Q₁₂= (OL₂-OL₁) ・ V₁₁+
kV₁₂・ V₁₁-TV₁₁・ V₁₁= 0 V₁₂・ Q₁₁Q₁₂= (OL₂-OL₁) ・ V₁+ K
V₁₂・ V₁₂-TV ₁₁V₁₂= 0 Using the solution of the above simultaneous equations (the values of t and k),
Substituting into the equation of the straight line, the Q of the closest point of both straight lines₁₁, Q
₁₂And calculate the midpoint of one or both
Intersection M₁To be adopted. Similarly, the intersection M₂Tertiary
The original coordinate position is also calculated. The light sources are for example exclusively alternating
Since they are lit, they are identified in a time-division
The target can be obtained individually by the above method,
Which point corresponds to which light source is determined by, for example, Y
The determination can be made based on the coordinate values. That is, the operator
In the state where the coordinate pointing member 3 in a shape of is held,
Because there is a height difference, the larger Y coordinate value is
Light that is farther from the input surface of the coordinate indicating member
The irradiation units 6a and 6b
The position can be determined. In addition, the pointing coordinate member 3 and the central system
The control unit 8 is connected by wire, and the control unit 8 controls the lighting light source and the meter.
It is also possible to use a method to synchronize (synchronize) with the measurement data.
You.

Now, in the coordinate indicating member 3, each of the irradiation sections 6a, 6b
As shown in FIG. 2, the position of the point S and the pointing part S (the pen tip 11) are arranged on a straight line at a predetermined interval, and the pointing part S and the intersections M ₁ and M ₂ The relationship of the following linear vector equation holds. Therefore, the designated portion S can be obtained from the coordinate value of each intersection. OS = OM ₁ + a M ₁ M ₂ Here, the constant “a” is calculated in advance from the relative relationship between each light source position and the indicated part (ratio of installation intervals) and stored in the apparatus. As described above, the position S of the designated part is calculated, and the X and Z coordinate values at this time are used as the coordinate values of the input plane to obtain the output coordinates. Further, there is provided means for changing the data of at least one of the relative position of the emission position or the relative positional relationship between the coordinate designation site and at least one of the emission positions stored in the storage means 7. Specifically, utility software that reads and writes data in the direct storage means is installed in the next-stage information processing device, and by executing it, it is directly rewritten, or the variable resistance value by the volume is detected and linked with it. By changing the value of the coefficient a by updating any of the data, the position data between the light emission position and the designated portion can be rewritten. As a result, it is possible to improve the measurement accuracy of the designated coordinate position S by correcting the effects of errors (instrument errors) and measurement errors during actual assembly.

[0017]

Embodiment 2 FIG. 6 schematically shows the structure of an embodiment corresponding to the seventh aspect of the present invention. In this embodiment, a pinhole is used instead of the lens as the angle detecting means.
25, and is set apart from the light receiving element 22 by a predetermined distance, for example, a focal length f, and the center of the intensity pattern on the light receiving element 22 (or the center of gravity in consideration of the light amount distribution)
The component of the incident vector can be calculated from the coordinate value of the incident light on the light receiving element from the center axis position of the pinhole and the distance f in the same manner as the calculation method using the lens. In this embodiment, if the light receiving intensity can be ensured, the incident direction can be detected accurately without using an expensive lens.

[0018]

Embodiment 3 An embodiment corresponding to the eighth aspect of the present invention is schematically shown in FIGS. 7 and 8. FIG. In this embodiment, as shown in FIG. 7, a means 31 for generating a predetermined signal on a coordinate indicating member and a button 30 for operating a transmission instruction are provided.
Is arranged, and a signal modulated to a predetermined signal by the button operation is transmitted by superimposing a predetermined signal from the signal generation unit 30 with one of the light sources as a carrier wave, and the angle detection unit The signal light received by one of the light detection units is converted into a predetermined signal by the central processing unit 8 after the signal demodulated by the reception unit 35 that demodulates a predetermined signal is received by the next stage. (For example, a personal computer PC or an information terminal). For example, considering that this apparatus is used as a mouse, by realizing a click operation of a mouse button with this function, the apparatus can be used as an input apparatus for GUI operation of a PC or the like. Also, by preparing a signal to be superimposed in accordance with the type of operation of a single button or the operation of a plurality of buttons in the signal generation means 31, it is also possible to instruct a plurality of different operations to the next device. It is possible. Furthermore, a dedicated transmission / reception unit 35 may be provided for each, and light having a different wavelength from the light source may be used as a carrier. Similarly, the same can be achieved by providing a dedicated transmission / reception unit and using radio waves or ultrasonic waves as carrier waves.

The present invention can be variously modified. For example, the light source section of the pointing coordinate member can be realized by installing a plurality of light sources on the circumference in the direction of the optical axis in the radial direction. . Further, by providing a filter for blocking light other than the wavelength of the light source in the light detection unit, it is possible to reduce the influence of external light or the like. Further, when there is no input signal to the incident direction detecting means for a certain period of time, it is possible to cope with energy saving by suppressing electric power to the central processing unit, etc., and to operate the coordinate indicating member by a pressure sensor, acceleration or inclination sensor. It is also possible to supply power to the light source unit by detecting that the user has held it.

[0020]

According to the first aspect of the present invention, there is provided means for irradiating predetermined light from two or more different portions on the coordinate indicating member, receiving the irradiating light, and incident direction of the irradiating light. And at least two direction detection means including a light detection means arranged at a predetermined position for detecting the light intensity information and a calculation means for calculating the incident direction from light intensity information of the light detection means, further comprising: Means for storing relative position information between the position of two or more light irradiation means on the coordinate indicating member and the coordinate indicating part of the coordinate indicating member; and obtaining the position information from the incident direction information and the position information of the direction detecting means. Calculating means for calculating an emission position; and calculating means for calculating the designated coordinate position based on the emission position information and relative position information between the emission position and the coordinate designation part. Optical coordinate information A force device, which basically detects the position of a light emitting element attached to a coordinate pointing member, determines the position of the pointing portion of the member based on the position information, and outputs the coordinate information. Therefore, coordinate information can be determined with high performance. Moreover, with the above configuration, it is possible to provide a small and inexpensive coordinate output device.

According to a second aspect of the present invention, there is provided the optical coordinate information output device, wherein the optical coordinate information output device includes means for exclusively turning on a light source disposed at a predetermined position of the two or more coordinate indicating members. It is possible to identify from which light source the light is emitted, which is effective for measuring the position of each light source. According to a third aspect of the present invention, in the coordinate information output device,
Since the light source unit is configured so that the irradiation light of the coordinate indicating member is emitted from the predetermined portion of the coordinate indicating member almost all around, no matter where the coordinate indicating member is, Even in such a direction / inclination state, the detection calculation of the position information can be executed stably. Claim 4
In the above optical coordinate information output device, the relative position relationship between the position of two or more light irradiation units on the coordinate indicating member to be stored in the storage unit and the coordinate indicating part of the coordinate indicating member in the optical coordinate information output device. In a state where a predetermined position is designated by the coordinate pointing member, a measurement calculation of a light emitting position (light source position) of the coordinate pointing member is performed using the optical coordinate information output device of the present invention, and as a result, Since the relative position information is specified from the position information of the first position and the information of the predetermined position, the relative position information can be directly obtained not from the design information. Accurate information is obtained without being affected by it.

According to a fifth aspect of the present invention, in the optical coordinate information output device, a relative position of the emission position or a relative position of at least one of the emission positions and a coordinate designation portion stored in a storage means. Since means for making at least one of the relational data rewritable is provided, correction can be made when any of the positional information corresponding to the number of light sources plus one is relatively displaced. . According to a sixth aspect of the present invention, in the optical coordinate information output device, power is supplied to a light emitting element as light irradiation means to emit light by detecting that the coordinate pointing member has contacted the coordinate input plane. Since the light irradiating means does not need to constantly irradiate light,
Irradiation may be performed when position detection is required, that is, when the coordinate pointing member comes into contact with the coordinate input plane, thereby saving power without wasting power.

According to a seventh aspect of the present invention, in the optical coordinate information output device, the incident direction detecting means has a light receiving element group arranged in a predetermined pattern at a predetermined distance from the opening. Since there is provided a determining means for determining the incident direction from the light intensity pattern information of the group, the irradiation light from the light source passes through the opening of the incident direction detecting means, which is a light receiving section, at a predetermined distance from the opening. The light is received by the light receiving element group two-dimensionally arranged in a pattern, and the position of this light spot can be detected from the light intensity pattern information of the light receiving element group, and the incident direction of the light falling on the direction of the light source can be determined. The optical coordinate information output device may further include an operation unit for instructing a predetermined operation on at least one coordinate indicating member, and a predetermined wireless communication in response to the operation of the operation unit. A transmitting unit for generating a signal, and a unit for receiving a signal from the transmitting unit and outputting a predetermined signal to a connected next-stage device. It is possible to notify other operation instructions to the next-stage device, and the operation of the graphical user interface (GUI) of the information equipment can be performed by this device.

[Brief description of the drawings]

FIG. 1 is a schematic view of an optical coordinate input device according to the present invention.

FIG. 2 is a diagram showing a schematic view of a coordinate pointing member according to the present invention.

FIG. 3 is a schematic view showing another form of the coordinate indicating member according to the present invention.

FIG. 4 is a diagram illustrating the principle of a measurement system according to the present invention.

FIG. 5 is an operation principle diagram showing a relationship between a position of a spot point on a position detecting element and irradiation light in the present invention.

FIG. 6 is a diagram showing an embodiment in which a pinhole opening is used instead of a lens.

FIG. 7 is a diagram showing an embodiment in which a function of transmitting predetermined information is provided to the coordinate indicating member of the present invention.

FIG. 8 is a diagram showing an embodiment having a function of outputting predetermined information transmitted from a coordinate indicating member to an information processing device at the next stage.

FIG. 9 is a diagram showing an example of the related art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Optical coordinate input device 7 Storage means 2 Coordinate input surface 8 Central processing means 3 ... Coordinate indicating member 10 Control circuit 4,5 Angle detecting means 11 Coordinate indicating part 6a, 6b Light irradiation part 12,13 Light source

Claims (8)

[Claims] 1. A coordinate information output device comprising: a position detector having an angle detector for receiving light from a coordinate indicating member on which a light emitting element is mounted and detecting an incident angle of incident light from light intensity information on the light receiving element. A means for irradiating predetermined light from two or more different parts on the coordinate indicating member, and a light receiving means for receiving the light and arranging the light at a predetermined position for detecting an incident direction of the light. And at least two direction detection units each including a light detection unit and a calculation unit that calculates the incident direction from light intensity information of the light detection unit, and two or more light irradiation units on the coordinate pointing member. Means for storing relative position information between a position and a coordinate indicating part of the coordinate indicating member; calculating means for calculating the output position from the incident direction information and position information of the direction detecting means; and the output position information The optical coordinate information output apparatus characterized by having a calculating means for calculating the indicated coordinate position based on the relative position information of the coordinate indicator portion and said exit position. 2. The optical coordinate information output device according to claim 2, wherein
2. The optical coordinate information output device according to claim 1, further comprising means for exclusively turning on a light source disposed at a predetermined position of one or more of said coordinate indicating members. 3. The coordinate information output device according to claim 1, wherein the light source unit is configured so that the irradiation light of the coordinate indicating member is emitted from a predetermined portion of the coordinate indicating member substantially all around. The optical coordinate information output device according to claim 1. 4. An optical coordinate information output device, comprising: means for specifying a corresponding relative positional relationship stored in the storage means from a measurement calculation result of a light emitting position of the coordinate pointing member which has designated a predetermined position. The optical coordinate information output device according to claim 1, wherein the optical coordinate information output device is provided. 5. In the optical coordinate information output device, at least one of a relative position of the emission position stored in the storage means or a relative positional relationship between at least one of the emission positions and the coordinate pointing portion. 5. An optical coordinate information output device according to claim 1, further comprising means for making the data of the above-mentioned data rewritable. 6. The coordinate information output device further comprises means for detecting the contact of the coordinate indicating member with a coordinate input plane and supplying power to a light emitting element as the light irradiation means to emit light. The optical coordinate information output device according to claim 1, wherein: 7. The optical coordinate information output device, wherein the incident direction detecting means has a light receiving element group arranged in a predetermined pattern at a predetermined distance from the opening, and based on the light intensity pattern information of the light receiving element group. The optical coordinate information output device according to any one of claims 1 to 6, further comprising a determination unit that determines an incident direction. 8. The optical coordinate information output device, wherein an operation unit for instructing a predetermined operation on at least one of the coordinate indicating members and a predetermined radio signal are generated according to the operation of the operation unit. A transmitting unit, and receiving a signal from the transmitting unit and receiving a predetermined signal? Output means for outputting the optical coordinate information to a next-stage device.