JPH05313809A - Coordinate input device - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a second switch function at a position where malfunction does not occur without sacrificing operability. [Constitution] In the present invention, the processing unit 26 includes a transmission circuit 24.
From the pen tip 2 to the coordinate detecting sensor coil 22 and the response signal of the same frequency to the coordinate detecting sensor coil 22 is received by the tuning circuit provided on the pen tip 2 side via the receiving circuit 25. The instructed position information is input and the on / off information of the first switch that is turned on / off by the pen tip 2 is input by the phase change of the first signal. Next, the processing unit 26 sends a signal of the second frequency from the transmission circuit 24 to the coordinate detecting sensor coil 22 and receives a response signal of the same frequency from the signal from the tuning circuit provided on the cap 8 side. The position information indicated by the cap 8 is input, and the on / off information of the second switch that is turned on / off by the cap 8 is input by the phase change of the second signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coordinate input device using a pen and a tablet, and more particularly to a pen switch function.

[0002]

2. Description of the Related Art Conventionally, in this type of coordinate input device, when an arbitrary position on the tablet is pointed by a pen, a coordinate value corresponding to the pointed position on the tablet is input to input a character or the like drawn by the pen. Is to be entered. By the way, a switch using a core body that moves in the pen axis direction is provided at the pen tip portion of the pen, and the switch can be turned on and off by pressing the core body on or off the tablet. It has become. That is, the coordinate input device inputs the coordinate value corresponding to the pointing position of the pen tip on the tablet, and at this time, the switch on / off corresponding to whether or not the pen tip is pressing the tablet surface. You can enter the information. Since such a conventional pen has only one switch function at the pen tip, when the pen is used as a substitute for a mouse, for example, the mouse has a plurality of on / off switches. There was a drawback that only some of the functions of could be substituted.

Therefore, in addition to the switch function provided on the pen tip of the pen as described above, a side switch is provided on the side surface portion of the pen housing, and an operator manually turns this side switch on and off. Further, by inputting 2-bit information to the coordinate input device, a function equivalent to that of the mouse is provided. Such a side switch corresponds to a function key in a keyboard, and the function of the coordinate input device can be switched by turning this side switch on or off. However, the side switch is mounted at a position where the operator can easily operate the side switch with a hand holding a pen,
There was a possibility of unintentionally pressing the side switch to cause a malfunction. In order to avoid this malfunction, if the mounting position of the side switch is set higher than the pen tip in the opposite direction, it is difficult for a finger to hit and the possibility of the malfunction can be reduced. However, there is a drawback that the operability when operating the side switch with a finger is deteriorated. Furthermore, to make the pen easier to use,
When the pen housing diameter is reduced, the side switch is also made up of small parts, and the operability of the pen also deteriorates.

[0004]

Conventionally, a switch is provided at the pen tip of a pen for inputting position information to the coordinate input device by designating an arbitrary position of the tablet of the coordinate input device. In order to increase the information that can be input to the coordinate input device, side switches are provided on the side surface of the pen case. However,
Since this side switch is attached at a position where it is easy to operate with a hand holding a pen, the side switch has the disadvantage that it unintentionally pushes the side switch by hand, causing a malfunction. Therefore, in order to prevent this malfunction, when the side switch is attached while being displaced in the direction opposite to the pen tip, there is a drawback that the operation becomes difficult this time. In addition, in order to improve the operability of the pen, a case having a reduced diameter may be used,
In such a case, since the parts composing the side switch are also small, there is a drawback that the operability is deteriorated accordingly.

Therefore, the present invention eliminates the above-mentioned drawbacks, and provides a coordinate input device provided with a pen provided in a position where a switch function corresponding to a side switch is provided at a position where malfunction does not occur without sacrificing operability. It is an object.

[0006]

According to the present invention, there is provided a coordinate input device for inputting position information on a tablet designated by a pen tip of a pen operated by an operator, wherein the pen tip in a direction opposite to the pen tip is used. A tuning circuit for inputting the position information is provided in the housing, and the frequency of the signal transmitted / received by the tuning circuit is different from the frequency of the signal transmitted / received by the tuning circuit provided in the pen tip portion. It has the configuration.

As another invention different from the above configuration, in a coordinate input device for inputting on / off information of a switch which is turned on / off by moving a pen tip of an pen operated by an operator in an axial direction from a tablet, the pen Another switch is provided inside the housing of the pen in a direction opposite to the tip, and the other switch is provided by a member provided so as to project to the side opposite to the pen tip and a transmission member that transmits the reciprocating motion of this member. Is turned on and off, and the on / off information of this switch is input from the tablet.

[0008]

In the coordinate input device of the present invention, a tuning circuit, which is provided at the end (head) of the housing in the direction opposite to the pen tip portion, and which includes a coordinate detection coil and a resonance circuit, operates the coordinate detection coil. Positional information is input to the tablet by receiving a signal transmitted from the element of the tablet that is brought into close proximity and returning the signal to the element of the tablet. At this time, by making the frequency of the signal transmitted and received by the tuning circuit on the head side different from the frequency of the signal transmitted and received by the conventional tuning circuit provided in the pen tip portion, the tablet It is possible to distinguish and input the position information designated by the pen tip part or the head part.

In the coordinate input device of the present invention having an operation different from the above-mentioned operation, another switch is provided in the housing of the pen in the direction opposite to the pen tip, and this switch is projected to the side opposite to the pen tip. By turning on and off by a member provided on the tablet and a transmitting member that transmits the reciprocating motion of the member, on / off information different from the on / off information of the switch provided on the pen tip side is input from the tablet.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a pen that constitutes the coordinate input device of the present invention. Reference numeral 1 denotes a pen housing that indicates a tablet (not shown) with either a pen tip 2 or a cap 8 (may be simply referred to as a pen). 2 indicates an arbitrary position on the tablet surface and moves in the axial direction. Possible pen nibs, 3 is a pen shaft around which the first coordinate detecting coil 6 is wound around the outer circumference and supports the pen nib 2 in the axial direction, and 4 is that the end of the pen shaft 3 moves in the axial direction. The switch on the pen tip side that is turned on and off by 5 is a pen shaft guide that keeps the positional relationship between the pen shaft 3 and the switch 4 constant, and 6 is the first coordinate while receiving a radio wave generated from a tablet (not shown). A first coordinate detecting coil that transmits a radio wave generated from the detecting circuit 7, and a first coordinate detecting circuit 7 that includes a tuning circuit that temporarily holds the signal received by the first coordinate detecting coil 6. Circuit, 8 is pen tip 2 A cap attached to the end of the housing 1 of the opposite pen to indicate an arbitrary position of the tablet or to turn on / off the switch 14 provided inside the housing, and 9 is a second cap on the outer peripheral portion. A shaft member 10 around which a coil 10 for coordinate detection is wound and which supports the cap 8 movably in the axial direction receives radio waves generated from a tablet (not shown) and is generated from a second circuit 15 for coordinate detection. A second coordinate detecting coil for transmitting a radio wave, 11 is a first pen shaft support that supports the shaft member 9 and presses the spring 12 in the axial direction, and 12 is the first pen shaft support 11 and the second pen shaft support. Pen shaft support 1
A spring connecting 3 and a second pen shaft support 13 for moving the switch 14 in the axial direction to turn on / off the switch 14.
Is a switch on the cap side that is turned on and off when the second pen shaft support moves in the axial direction, and 15 is provided with a resonance circuit that temporarily holds a signal received by the second coordinate detection coil 9. And a second coordinate detection circuit.
The first coordinate detecting coil 6 and the first coordinate detecting circuit 7 form a first tuning circuit, and the second coordinate detecting coil
10 and the second coordinate detecting circuit 15 constitute a second tuning circuit.

FIG. 2 is a circuit diagram showing an embodiment of a tablet which constitutes the coordinate input device of the present invention and a signal input / output circuit for the tablet. Reference numeral 21 is a tablet for inputting position coordinate information designated by the pen 1 and ON / OFF information of switches provided in the pen 1, 22 is a sensor coil for detecting coordinates coordinated on the tablet 21, and 23 is the sensor for detecting coordinates. A switching circuit for switching whether the coil 22 is used for transmission or reception, 24 is a transmission circuit that generates a signal to be transmitted to the coordinate detection sensor coil 22, and 25 is captured by the coordinate detection sensor coil 22. A receiving circuit for receiving the signal, and a processing unit 26 for controlling the above-mentioned circuits to input information from the tablet 21. Note that the illustrated tablet 21 and the sensor coil 22 for coordinate detection wired thereon are one element arranged on the tablet 21, and a large number of such elements are arranged on the tablet, and each element is It corresponds to one coordinate value.

FIG. 3 is a diagram showing an equalizing circuit of the first and second coordinate detecting circuits provided in the pen 1 shown in FIG. The first coordinate detection circuit 7 has a resonance circuit including a coil L1 and capacitors C1 and C2, and a switch 4 is inserted between the capacitors C1 and C2. Therefore, when the switch 4 is off, the resonance circuit is the coil L.
1 and a capacitor C1. When the switch 4 is on, the resonance circuit includes a coil L1 and a capacitor C1.
It is composed of C2. The second coordinate detection circuit 15 has a resonance circuit including a coil L2 and capacitors C3 and C4, and a switch 14 is inserted between the capacitors C3 and C4. Therefore, when the switch 14 is off, the resonance circuit is composed of the coil L2 and the capacitor C3, and when the switch 14 is on, the resonance circuit is the coil L2.
And capacitors C3 and C4.

Next, the operation of this embodiment will be described. The pen 1 shown in FIG. 1 designates an arbitrary point on the tablet 21 by the pen tip 2 as shown in FIG. 4, and inputs position coordinate information of that point and on / off information of the pen tip switch 4 to the tablet 21. Alternatively, an arbitrary point on the tablet 21 is designated by the cap 8, and positional coordinate information of the point and on / off information of the cap side switch 14 are input to the tablet 21.

Now, the operation of inputting position coordinates to the tablet 21 using the pen 1 will be described in more detail. First, the operator holds the pen 1 and brings the pen tip closer to a desired point on the tablet 21. At this time, the processing unit 26 shown in FIG. 2 activates the transmission circuit 24 and
A high-level switching signal as shown in the area A of FIG. 5 (I) is output to the switching circuit 23, and the switching circuit 23 switches to connect the coordinate detecting sensor coil 22 to the transmission circuit 24. Therefore, a transmission signal generated by the transmission circuit 24 as shown in the area A of FIG. 5 (II) is supplied to the coordinate detection sensor coil 22 through the switching circuit 23. As a result, a radio wave corresponding to the signal is transmitted from the coordinate detecting sensor coil 22. This radio wave is received by the first coordinate detecting coil 6 in the pen 1 shown in FIG. 1, and the received signal is input to the first coordinate detecting circuit 7. The reception signal input to the first coordinate detection circuit 7 is introduced into a resonance circuit composed of a coil L1 and a capacitor C1 as shown in FIG. 3, and the same frequency as the reception signal is applied to this resonance circuit. The signal that it has flows. still,
In this example, the pen tip 2 shown in FIG. 1 is in the state of approaching the tablet 21, so the switch 4 is off, and the resonance circuit is composed of the coil L1 and the capacitor C1 as described above. After that, the processing unit 26 shown in FIG.
As shown in the area A of (I), the switching signal is set to the low level and is output to the switching circuit 23. Therefore, the second coordinate detection sensor coil 22 causes the switching circuit 23 to receive the receiving circuit 2
At the same time as switching to the 5 side, the processing section 26 activates the receiving circuit 25. As a result, the signal flowing in the resonance circuit formed by the coil L1 and the capacitor C1 of the first coordinate detection circuit 7 shown in FIG. 3 is the first signal shown in FIG.
Is output to the coordinate detecting coil 6 of the
Is transmitted from the coordinate detecting coil 6. At this time, the coordinate detecting sensor coil 22 shown in FIG. 2 captures the radio wave transmitted from the first coordinate detecting coil 6, so that a signal corresponding to the radio wave is received by the receiving circuit 2 via the switching circuit 23.
5 is received. FIG. 5 (III) shows the receiving circuit 25 at this time.
The received signal is received by the processing unit 2
6 is input.

The processing unit 26 includes a sensor coil 22 for detecting coordinates.
Of which element the received signal is received, the position coordinate position is obtained, and it is detected from the phase of the received signal whether the pen tip switch 4 is on or off. Here, in the above-described state of the pen 1, since the switch 4 is in the off state, the resonance circuit in the first coordinate detection circuit 7 includes the coil L1 and the capacitor C.
Since it is composed of 1, the reception signal of the phase corresponding to this circuit can be obtained. Therefore, the processing unit 26 can know that the pen tip switch 4 is in the off state based on the phase of the received signal. After that, when the pen tip 2 of the pen 1 shown in FIG. 1 contacts the tablet 22 and further enters the housing, the pen shaft 3 moves in the housing inward direction along the pen shaft guide 5 by this operation. , Switch 4 is pressed to turn it on. As a result, the resonance circuit in the first coordinate detection circuit 7 has a coil L as shown in FIG.
1 and capacitors C1 and C2. Therefore, in this state, the phase of the signal output from this resonance circuit is shifted by the amount of the addition of the capacitor C2. When the processing unit 26 detects the phase shift of the signal received by the receiving circuit 25, it knows that the pen tip switch 4 is turned on at this point. As a result, the processing unit 2
6 can input position coordinate information on the tablet 21 designated by the pen tip 2 and on / off information of the pen tip switch 4.

Next, the processing unit 26 outputs a high-level switching signal to the switching circuit 23 as shown in the area B of FIG. 5 (I), and the switching circuit 23 causes the coordinate detecting sensor coil 2 to operate.
2 is connected to the transmission circuit 24. Therefore, the transmission signal generated by the transmission circuit 24 as shown in the area B of FIG. 5 (II) is supplied to the coordinate detection sensor coil 22 through the switching circuit 23. In addition, B shown in FIG.
The frequency of the signal generated from the transmission circuit 24 in the area is different from the frequency of the signal generated in the area A. As a result, a radio wave corresponding to the signal is transmitted from the coordinate detecting sensor coil 22. This radio wave is received by the second coordinate detecting coil 10 in the pen 1 shown in FIG. 1, and the received signal is input to the second coordinate detecting circuit 15. Since the received signal input to the second coordinate detection circuit 15 is introduced into the resonance circuit configured by the coil L2 and the capacitor C3 as shown in FIG. 3, the same reception signal as the transmission signal is input to this resonance circuit. A signal having a frequency flows. In the above example, since the cap 8 shown in FIG.
Is in the off state, and the resonance circuit is the coil L2 as described above.
And a capacitor C3. After that, Figure 2
Since the processing unit 26 shown in FIG. 5 sets the switching signal to the low level and outputs this to the switching circuit 23 as shown in the area B of FIG. 5 (I), the coordinate detection sensor coil 22 is switched to the switching circuit 23.
Is switched to the receiving circuit 25 side, and the processing unit 26 activates the receiving circuit 25. As a result, FIG.
The signal flowing in the resonance circuit constituted by the coil L2 and the capacitor C3 of the second coordinate detecting circuit 15 shown in FIG. 2 is output to the second coordinate detecting coil 10 shown in FIG. It is transmitted from the second coordinate detecting coil 10. At this time, the coordinate detecting sensor coil 22 shown in FIG. 2 captures the radio wave transmitted from the second coordinate detecting coil 10, and the signal corresponding to this radio wave is received by the receiving circuit 25 via the switching circuit 23. To be done. FIG. 5 (IV) shows the received signal received by the receiving circuit 25 at this time, and this received signal is input to the processing unit 26.

By the way, in the above-mentioned pen state, since the switch 14 is in the off state, the resonance circuit in the second coordinate detecting circuit 15 is constituted by the coil L2 and the capacitor C3, which corresponds to this circuit. The received signal having the selected phase is input to the processing unit 26. Therefore, the processing unit 26 knows that the cap side switch 14 is in the off state based on the phase of the received signal. After that, when the cap 8 of the pen 1 shown in FIG. 1 comes into contact with the tablet 22 and further retracts to the housing side, this operation causes the shaft member 9 to move toward the inside of the housing, so that the first pen shaft support 11 is moved. To move. The movement of the first pen shaft support 11 is caused by the spring 12
The second pen shaft support 13 is moved in the direction of the switch 14 via the
Press to turn it on. As a result, the resonance circuit in the second coordinate detecting circuit 15 is composed of the coil L2 and the capacitors C3 and C4 as shown in FIG. Therefore, in this state, the phase of the signal output from this resonance circuit is shifted by the amount of the addition of the capacitor C2. When the processing unit 26 detects the phase shift of the signal received by the receiving circuit 25, it knows that the cap side switch 14 is turned on at this point. As a result, the processing unit 26 causes the tablet 21 to be instructed by the cap 8.
The upper position coordinate information and the on / off information of the cap side switch 14 can be input. The coordinate detection sensor coil 22 which is one element on the tablet shown in FIG.
Does not simultaneously receive the signal transmitted from the first coordinate detecting coil 6 on the pen tip side and the signal transmitted from the second coordinate detecting coil 10 on the cap 8 side, whichever is closer In order to receive the signal of, the processing unit 26 determines whether the pen tip 2 side is instructed by the phase of the received signal,
On the contrary, it is possible to distinguish whether the cap 8 is the one designated.

FIG. 6 is a diagram showing the timing of signals transmitted and received by the conventional tablet for reference. Conventionally, there is no A area and B area as shown in FIG.
Alternatively, the operation performed in the B area is only performed once in the A + B area. That is, (I) indicates a switching signal for switching the sensor coil 22 for coordinate detection between transmission and reception by the switching circuit 23, and (II) is transmitted from the sensor coil 22 for coordinate detection. Shows the waveform of the signal,
(III) shows an example of a transmission signal waveform from the pen received by the sensor coil 22. In this case, since the tuning circuit for inputting position coordinates is provided only on the pen tip side,
Signal transmission / reception of one frequency as described above is sufficient.

FIG. 7 and FIG. 8 are diagrams showing in detail the OFF and ON states of the cap side switch mechanism portion of the pen 1 shown in FIG. FIG. 7 is a diagram showing a state of parts of each part constituting the switch mechanism part when the switch 14 is in an off state. In this case, since no pressing force is applied to the cap 8, the elastic force of the spring 12 causes the first pen shaft support 11 and the second pen shaft support 13 to move the pen shaft guide 16 and the pen shaft guide 17 as shown. It is held down by the side of. The cap 8 is connected to and integrated with the shaft member 9, and the first pen shaft support 11 is attached to the shaft member 9.
Since they are joined together, a mechanism portion for transmitting the movement of the shaft member 9 in the pen axial direction to the spring 12 is configured. Since the spring 12 is connected to the first pen shaft support 11, the movement of the shaft member 9 is controlled by the spring 12 to the second position.
The amount of movement of the shaft member 9 in the pen axis direction is controlled by the elastic force of the spring 12 while being transmitted to the pen shaft support 13. The pen shaft support 13 is coupled to the spring 12, and moves in the pen shaft direction as the spring 12 moves. A switch 14 is provided in the innermost part of the housing in such a switch mechanism portion on the cap side, and in this state, the switch 14 is in an off state.

FIG. 8 shows a case where the switch 14 is turned on by pushing the above-mentioned cap 8 toward the inside of the pen housing. When the cap 8 is pushed in the pen shaft direction, the shaft member 9 moves along the pen shaft guide 16 away from the side surface of the pen shaft guide 16 in the housing toward the switch 14. As a result, the first pen shaft support 11 moves in the housing toward the switch 14 along the pen shaft guide 16, so that the spring 12 contracts in response to the pressing of the cap 8. When the spring 12 contracts, the pen shaft support 13 separates from the side surface of the pen shaft guide 17 in response to the contraction of the spring 12, and comes into contact with and presses the switch 14 to turn on the switch 14.

9 and 10 are views showing another detailed example of the above-mentioned cap side switch mechanism portion. FIG. 9 is an example showing a case where the switch 14 is in the off state.
In this example, the first pen shaft support 11 is connected to the other end of the shaft member 9 to which the cap 8 is connected. However, the pen shaft support 11 directly turns on / off the switch 14. FIG. 10 shows a state in which the switch 14 is turned on in the above configuration. In this example, unlike the example shown in FIGS. 7 and 8, since the spring 12 is not provided, the axial movement of the cap 8 causes the switch 14 to be directly turned on / off via the shaft member 9 and the first pen shaft support 11. Therefore, the switch 14 can be turned on and off with a minute stroke of the cap 8.

According to the present embodiment, in addition to the pen side switch 4 which is turned on and off by the pen tip 2 of the pen 1, the pen 8 is turned on and off by the cap 8 provided at the end of the housing opposite to the pen tip 2. With the cap side switch 14,
Even on the side of this cap 8, the pen tip 2 on the tablet 21
Since the position information is input separately from the side, the cap side switch 14 can be used like a conventional side switch, and the information input function of the pen 1 can be improved. Moreover, the mechanism for turning on / off the switch 14 is to turn on / off by knocking with a finger the cap 8 mounted on the shaft of the housing end opposite to the pen tip 2 or by bringing the cap 8 into contact with the tablet 21 or the like. Since the configuration is such that it is possible to reduce the possibility of erroneous operation without impairing its operability. Moreover, in this example, the second coordinate detecting coil 1 is provided on the cap 8 side.
Since 0 and the second coordinate detection circuit 15 are provided,
Even when the tablet 21 is pointed by the cap 8, the position information of the pointed position can be input separately from the pointing of the pen tip 2 as described above. Therefore, in addition to the on / off information of the switch 14, the cap 8 side According to the position information input by the instruction, the information input into the tablet 21 can be dramatically increased, and various information and function instructions can be input from the tablet 21 into the device by using the pen 1. For example, when a character is written on the tablet 21 using the pen tip 2 and the position information is input by tracing the portion where the character is drawn on the cap 8, the character is erased, and the like. The characters input on the tablet 21 can be erased more easily than before. Moreover, in order to improve the operability, the pen 1
Even if the diameter of the casing is reduced, the cap 8 is attached in the axial direction at the end of the casing.
Does not have to be so small, and its operability is not impaired.

[0023]

As described above, according to the coordinate input device of the present invention, it is possible to provide a pen provided with a switch function corresponding to a side switch at a position where malfunction does not occur without sacrificing operability.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a pen that constitutes a coordinate input device of the present invention.

FIG. 2 is a circuit diagram showing an embodiment of a tablet constituting the coordinate input device of the present invention and a signal input / output circuit for the tablet.

FIG. 3 is a diagram showing an equalizing circuit of first and second coordinate detecting circuits provided in the pen shown in FIG.

4A and 4B are views for explaining how to use the pen shown in FIG.

5 is a diagram showing transmission / reception timings of signals transmitted / received by the coordinate detecting sensor coil on the tablet shown in FIG. 2;

FIG. 6 is a diagram showing a transmission / reception timing of a signal transmitted / received by a conventional coordinate detection sensor coil on a tablet.

FIG. 7 is a diagram showing in detail an off state of a cap side switch mechanism portion of the pen shown in FIG.

FIG. 8 is a diagram showing in detail an ON state of a cap side switch mechanism portion of the pen shown in FIG.

9 is a view showing another detailed example of the cap side switch mechanism section shown in FIG.

10 is a view showing another detailed example of the cap side switch mechanism section shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pen 2 ... Pen tip 3 ... Pen axis 4, 14 ... Switch 5 ... Pen axis guide 6 ... 1st coordinate detection coil 7 ... 1st coordinate detection circuit 8 ... Cap 9 ... Shaft member 10 ... 2nd For detecting coordinate of 11 ... First pen shaft support 12 ... Spring 13 ... Second pen shaft support 15 ... Second coordinate detection circuit 21 ... Tablet 22 ... Coordinate detection sensor coil 23 ... Switching circuit 24 ... Transmission Circuit 25 ... Receiving circuit 26 ... Processing unit

Claims (2)

[Claims] 1. A coordinate input device for inputting position information on a tablet designated by a pen tip of a pen operated by an operator, wherein the position information is input in a housing of the pen in a direction opposite to the pen tip. A tuning circuit for
Further, the coordinate input device is characterized in that the frequency of the signal transmitted and received by the tuning circuit is different from the frequency of the signal transmitted and received by the tuning circuit provided in the pen tip portion. 2. A coordinate input device for inputting on / off information of a switch, which is turned on / off by moving a pen tip of a pen operated by an operator in an axial direction, from a tablet, in the opposite direction to the pen tip. Another switch is provided in the pen housing, and the member provided so as to project to the side opposite to the pen tip and the transmission member that transmits the reciprocating motion of this member are turned on and off, and this switch is turned on and off. A coordinate input device for inputting ON / OFF information of the above from the tablet.