JPH07200128A - Pen with rotational angle detecting function and pen type coordionate input device - Google Patents

Abstract

PURPOSE:To obtain a regrip type electronic pen which draws a line varying in width with the direction of the pen and is usable like a marker by providing a rotational angle detection device which detects the angle of rotation of the pen around the pen axis as an axis of rotation. CONSTITUTION:At the tip, sensors 1-1 and 1-2 which detect the position (coordinates) of the pen are provided. Points that the sensors 1-1 and l-2 indicate are denoted as P1(x1, y1) and P2(x2, y2), a subtracter 4-1 finds the differences between the coordinates of the points P1 and P2, and an arithmetic circuit 4-2 finds the angle alpha of rotation of the pen. Coordinate information on the points P1 and P2, on the other hand, is inputted to an adder 4-3 and a divider 4-1 and the coordinates of the mid-point between the points P1 and P2 is found. A subtracting circuit 4-9 finds the difference of the angle a and the movement direction beta of the mid-point, an arithmetic circuit 4-0 finds its absolute value ¦alpha-beta¦=theta, and an arithmetic circuit 4-11 finds its sine sintheta. A multiplying circuit 4-12 multiplies sintheta by a constant L and a multiplying circuit 4-13 performs multiplication by a proportional coefficient K to find the width of the line to be drawn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pen having a function of detecting a rotation angle around a pen axis and changing an output according to the rotation angle.
mputerGraphics) and DTP (Desk)
The present invention relates to a panel also serving as a display, a coordinate input pen used together with a dedicated tablet, etc. in an information editing apparatus such as an illustration or a drawing used in a system such as Top Publishing.

[0002]

2. Description of the Related Art In recent years, the speed of performance improvement and price reduction of personal computers is remarkable. As a result, a word processor, a CAD (Computer Aided Des
It is now possible to create documents and drawings that are not inferior to printed matter by a dedicated machine such as (ign). Nowadays, the DTP system is frequently used to create materials for presentations.

In such a system, it is desired to improve the input function and the editing function of character information and graphic information.
Various input devices have been devised in order to efficiently input graphic information.

FIG. 10 shows a mouse 10-1 and a liquid crystal panel 1.
0-2, touch pen 10-3, tablet 10-4, stylus 10-5, and keyboard 10-6 are combined. A mouse is a device that slides on a desk to input coordinate information. The liquid crystal panel in this figure serves as both a display device and an input device. Other than the above, the display device includes a CRT (cathode ray tube), a plasma display, and the like. It is also possible to input coordinates by pointing the tablet surface with a stylus.

Hereinafter, a coordinate input panel that also serves as a display and a tablet that is an input-only device will be generically referred to simply as "panel", and a touch pen and a stylus will be generically referred to as "electronic pen" or simply "pen".

At present, an input system using a panel and a pen is attracting attention because it can be used like a handwriting and there is little discomfort. However, it is not easy to design a system that satisfies both beginners and experts.
The input method adopted by the existing DTP application and its problems will be described below.

GUI (Graphic User In)
In a DTP system based on the (terface), a so-called menu system is mainly used, in which a selection list of currently executable commands is presented on a display and a user selects an item to be executed.

FIG. 11 shows an example of a graphic information processing system using a menu system, in which a content 11-1 displayed on the display is selected by a pen 11-2. Even if the selection tool is a mouse instead of a pen, you can move the mouse cursor over the menu and select a command. The width of the line drawn by the pen 11-2 is 1.0m.
When setting to m, "pen", "pen width", "1.0mm"
You can select the menus in sequence with the pen.

This has a merit that even a beginner can easily operate without relying on a thick manual.
However, on the other hand, each time you execute a command, you have to move the pen or mouse to the menu, which is a hassle and the disadvantage that displaying the menu hides the figure being edited and narrows the screen. There are disadvantages. In addition to the pen and mouse, the keyboard 10-6
There is also a method of using together. In this case, a shortcut operation is usually adopted, in which a control key or the like is pressed and an alphanumeric key representing a command is tapped. However, this has the disadvantage that it takes time to learn the key operation.

FIG. 12 shows another example of the graphic information processing system by the menu system, in which the content 12-1 displayed on the display is selected by the pen 12-2. When selecting the shape of the pen tip, select "Pen", "Pen width",
You can select the "■" menu with the pen in order. 12
Then, I chose the "pen tip shape" so that vertical lines can be drawn thin and horizontal lines can be drawn thick. In such an application, a curve whose width continuously changes in the middle can be drawn like a line 13-2 drawn by the marker 13-1 in FIG. However, contrary to FIG. 12, when it is desired to change the shape of the pen tip so that the vertical line can be drawn thick and the horizontal line can be drawn thin, the menu is called again and the target item is selected again. There is a need. Even with such tools, the disadvantages of the menu method described above are still inherited.

Also, a method has been devised in which a thin line can be drawn when the pen is moved quickly, and a thick line can be drawn when the pen is moved slowly. In this case, the conventional pen-type coordinate input device can be realized only by changing the software without adding any hardware. This method has a demerit that it is difficult to draw a fine line drawing with a thin line, and it takes time to draw a figure using many thick lines. Also, it is difficult to keep the speed of the pen constant, so it is difficult to draw multiple lines of exactly the same width. That is, there is a problem that "reproducibility is poor". Poor reproducibility is an advantage when drawing realistic illustrations, but a disadvantage when drawing geometric figures.

As described above, there are various problems in the conventional input method which can be realized by simply improving the application without using the existing pen, in other words, without using the drawing-only pen. Have.

[0013]

On the other hand, there are some approaches that try to solve these problems by adding hardware for DTP to the pen. Next, the method will be described.

For example, a method of detecting the writing pressure applied to the pen and controlling the width of the drawn line has been put into practical use. However, this compels the user to continue operating the pen with a writing pressure different from the user's usual habit. Moreover, it is difficult to maintain a constant writing pressure, and if the detection width is widened, the number of selected species decreases, so writing pressure detection is one of the methods with poor reproducibility.

A method is also considered in which it is detected whether the pen is lying on the panel surface or standing up, and a line is drawn when lying down and thin when standing up and a line is drawn.
However, this also has the same problems as described above.

Finally, a method of drawing a line using paper and a writing instrument without using a computer will be described.

Some writing instruments such as markers, felt-tip pens, and fluorescent pens can draw lines of various widths separately with a single writing tool. Such a writing instrument has a tip which is not rotationally symmetrical with respect to the pen axis. The marker is
Often referred to by the trademark Magic.

The marker 13-1 shown in FIG. 13 is thin vertically,
A thick line can be drawn on the side. On the contrary, when it is desired to draw thick horizontal lines and thin vertical lines, as shown in FIG.
Need only be rotated by 90 ° about the rotation axis 14-4 and then held again. By rotating such a writing instrument, the line width that can be drawn can be arbitrarily changed.

Since most users are accustomed to this method of re-holding the pen according to the width of the line to be drawn, the resistance is extremely low. If you draw a curve with a marker, you can easily draw a line whose width changes continuously depending on the direction of the tangent line. Such curves can be used for announcement titles, comics, etc.
You can find many.

The line drawing obtained by the marker has poor reproducibility.
The biggest drawback of the markers is that "it is necessary to make the number of markers equal to the desired number of colors". Moreover, 1
Since there is a limit to the width of a line that can be drawn by using a single marker once, it may be necessary to prepare a plurality of markers having different core thicknesses in some cases.

The object of the present invention is, depending on the orientation of the pen,
An object of the present invention is to provide an electronic pen of a "take-back type" capable of drawing a line of varying width, that is, used as a marker. In other words, as shown in FIG. 14, the pen 14-1 has a pen-type input device provided with a mechanism for detecting a rotation angle around the rotation axis 14-2, and a line drawn according to the rotation angle. An object is to provide an information processing device whose width can be changed.

[0022]

The electronic pen according to the present invention has a function of detecting a rotation angle about the pen axis. The “rotation angle about the pen axis” means the orientation of the pen with the axis 14-2 of the pen 14-1 as the center of rotation, as described with reference to FIG. The problem can be solved by changing the width of the drawn line according to the rotation angle.

Next, the means for detecting this rotation angle will be described.

The electronic pen of the present invention is provided with at least two sensors at the tip of the pen for detecting the position (planar coordinates on the panel) pointed by the pen tip. The distance between these sensors is greater than the minimum resolution (1 pixel or 1 dot) of the panel. Therefore, when a plurality of sensors are brought into contact with the surface of the panel at the same time, the respective sensors point to different plane coordinates.

A plurality of signals pointed to by the respective sensors are input to the information processing apparatus, and the information processing apparatus calculates the current direction of the pen from the difference in the values of the plane coordinates. Then, the width of the line to be drawn is calculated from the direction of the pen and the separately obtained traveling direction of the pen.

The interval between the sensors may be appropriately determined in consideration of the resolution of the panel, the accuracy required for the system, the design of the pen tip, and the like.

Further, according to the present invention, the user can visually confirm the current orientation of the pen, and it is easy to bring a plurality of sensors into contact with the panel at the same time. A protrusion is provided on the pen tip for protection from impact. This protrusion is made to resemble the tip of the marker, and guides the user when using it.
Alternatively, it is a standard. Further, the cross section of the pen shaft is not rotationally symmetrical (circular) so that the user can confirm the current orientation of the pen by touch. Further, when some of the plurality of sensors are brought into contact with the panel, the remaining sensors are also brought into contact with the panel, so that a mechanism for automatically adjusting the length of each sensor is provided.

[0028]

With the above-described structure of the electronic pen, it is possible to detect the direction of the electronic pen, and accordingly, the attributes of the figure to be drawn, such as the width of the line, can be changed. Become.

[0029]

Embodiments of the present invention will be described below with reference to the principle of the present invention, a peripheral circuit and software of a pen, in a first embodiment and a second embodiment, and a structure of a pen tip in a third embodiment.

(First Embodiment) The pen according to the present invention has two sensors for detecting the position (coordinates) of the pen at the tip, that is, the sensor 1-, as shown in FIG. 1 and a sensor 1-2. D
The TP application can know the position where the tips of the two sensors are pointing.

FIG. 3A shows the panel surface with which the tip of the pen contacts. Sensor 1 when the pen touches the panel
It is assumed that -1 and 1-2 pointed to point 3A-1 and point 3A-2, respectively. After that, a small time (for example, 1 /
In 60 seconds), the tip of each sensor moves its trajectory 3A-5.
And 3A-6 are drawn to reach points 3A-3 and 3A-4, respectively. At this time, the information processing apparatus fills the shaded rectangular area 3A-7. This process
Repeatedly at intervals of about 60 times per second until the pen is separated from the panel surface, a plurality of small rectangles are drawn on the display (not shown). A set of these rectangles represents a straight line or curve with a width.

At this time, the width W of the line drawn by the pen of the present invention depends on the direction α of the pen and the traveling direction β of the pen. That is, the width of the drawn line is represented by the following mathematical formula 1.

(Equation 1) W = KLsin│α-β│ where K is a proportional coefficient and L is a distance between contact points of two sensors.

FIG. 4 shows an example of the configuration of an apparatus for processing the coordinate value pointed by the sensor. Two sensors 1-1, 1-
2 points P1 (x1, y1), P2 (x
2, y2). The subtracter 4-1 calculates the difference between the coordinates of P1 and P2, and the arithmetic circuit 4-2 calculates the rotation angle α of the pen.

On the other hand, the coordinate information of the two points P1 and P2 is also input to the adder 4-3 and the divider 4-4 to obtain the coordinates of the middle point of the two points. The coordinates of this midpoint are calculated by the subtractor 4-5.
And the delay or memory element 4-6. The output of the delay 4-6 is the other input of the subtractor 4-5. Therefore, the subtractor 4-5
Will output the moving speed of the middle point of the two points. This moving speed is input to the arithmetic circuit 4-7, and the moving direction β of the middle point is output. Even if the divider 4-4 is omitted,
The value of β that is output does not change.

The subtraction circuit 4-9 calculates the difference between the angles α and β, the calculation circuit 4-10 calculates the absolute value │α-β│ = θ, and the calculation circuit 4-11 calculates the sine sin θ. Ask. The multiplication circuit (4-12) multiplies sin θ by a constant L, and the multiplication circuit 4-13 further multiplies the proportional coefficient K to obtain the width of the line to be drawn.

The angle α is set to the control circuit 4 for the voice output function.
If output to -8, hear the orientation of the pen (pitch, etc.)
You can check it at. As described above, the attribute of information controlled by the detection signal of the pen orientation is not necessarily limited to the line width.

Also, the selector 4-14 is switched to KL.
If sin | α-β | is output via the non-linear conversion circuit 4-15, the line width does not change continuously, and a special effect can be produced. For example, when it is desired to use the two types of line widths reliably (with good reproducibility), this non-linear conversion function may be used.

By the way, the proportional coefficient K is not always the constant 1. For example, a DTP drawing tool usually has a function of enlarging / reducing a figure being edited, but it is appropriate to change the proportional coefficient K according to the enlargement ratio and the reduction ratio. For example, in FIG. 3B,
The application draws with a line width narrower than the space between the loci 3B-5 and 3B-6 of the two sensors. In addition,
The meaning of each number in FIG. 3B is the same as that in FIG. 3A (the same applies hereinafter). On the contrary, depending on the drawing mode of the application, it is needless to say that it is necessary to draw a line wider than the distance between the two sensors as shown in FIG. 3C.

Depending on the application, it is not always necessary to represent the line with a rectangle. In some cases, as shown in FIG. 3D, it is preferable to use software to smooth the four corners of a rectangle and draw a figure with rounded corners.

(Second Embodiment) Similar to the first embodiment, FIG.
The sensors 1-1 and 1-2 of FIG.
It is assumed that the point has moved from E-1 and point 3E-2 to point 3E-3 and point 3E-4. At this time, the information processing device fills in the shaded parallelogram region 3E-7. By repeating this process, a line having a width is expressed by a set of rectangles obtained. The second embodiment does not require the calculation of the transcendental function, and is therefore more cost effective than the first embodiment.

FIG. 3F is the same as above until the sensors 1-1 and 1-2 move from the points 3F-1 and 3F-2 to the points 3F-3 and 3F-4, respectively. The width of the drawn line is for the thinner case. A flow chart of the system in this case is shown in FIG. When the contact between the two sensors and the panel surface is detected, the processing of this flowchart is started.

First, the coordinates P pointed by the two sensors
1, P2 are read, and points Q1 and Q2 that internally divide the line segment P1P2 into R: 1-R and 1-R: R are obtained. After a certain time has elapsed, the coordinates P1 'and P2' pointed by the two sensors are read again, and the point Q1 that internally divides the line segments P1 'and P2' into R: 1-R and 1-R: R ', Q
Find each 2 '. Finally the parallelograms Q1, Q2, Q
Fill 2'and Q1 '. This process is repeated until the pen tip separates from the panel. Here, R is a real number of 0.5 or less. If R is negative, then in fact it will be an external division, not an internal division. Note that the relational expression of (Equation 2) K = 1−2R holds between R and the proportional coefficient K of the first embodiment.

(Third Embodiment) In the present invention, the user needs to know the direction in which the thickest line can be drawn by looking at the direction of the pen in his hand, not the information displayed on the display in front of him. There is. As a mark to confirm the current direction of the pen, or as a protective material for the sensor, as shown in Fig. 1,
It is preferable to provide the protrusions 1-3 and the protrusions 1-4. If the two sensors are exposed, the sensor may bend due to the impact when the pen tip is brought into contact with the panel, and the distance between the sensors may change.

The present invention is disclosed in, for example, JP-A-55-13813.
Unlike the one in which a plurality of sensors are provided on the pen tip as shown in Japanese Patent Publication No. 7, there is no need to have a structure in which the interval between the sensors can be freely adjusted. Therefore, in order to further increase the mechanical strength of the pen tip,
As shown in FIG. 2, there is also a method in which the sensor 2-1 and the sensor 2-2 are embedded in the protrusion 2-3 to completely fix the sensor.

If the groove 6A-1 is dug in the pen shaft as in the pen shown in FIG. 6A, the user can recognize not only the direction of the pen but also the sense of touch. Figure 6B
6B is a cross-sectional view of the pen shaft of FIG. 6A, and 6B-1 is a groove. Here, the “pen” includes a general writing tool having a rotation angle detection function, and is not limited to the “electronic pen”. Like a conventional pen, if the cross section of the portion of the pen shaft that is gripped by the hand is rotationally symmetrical, that is, circular, the user can
You cannot sense the orientation of the pen by touch. When the pen shaft is made into a regular hexagon like a pencil, the pen moves 60 ° (= 360 ° ÷
6) Can only rotate in units. With the method of digging a groove, such a problem does not occur.

As shown in FIG. 6C, there is also a method of making the cross section 6C-1 of the pen shaft elliptic instead of circular. If the pen axis is made into a flat ellipse so that the pen is not difficult to grip, the user can recognize the rotation angle by touch. In this case, it is appropriate to match the direction in which the thickest line can be drawn with the minor axis of the ellipse and the direction in which the thinnest line can be drawn with the major axis of the ellipse. In the figure, 6C-1 is a pen shaft having an elliptical cross section.
-2 and 6C-3 are the lines drawn when the pen moves in that direction.

When a dedicated tablet is used instead of a panel which also serves as a display, the user cannot visually confirm the direction of the pen, and therefore such a measure is necessary. The method for confirming the orientation of the pen by hearing rather than by touch has been described in the first embodiment.

By the way, one of the sensors of the two pen tips may come into contact with the panel surface and the other may float from the panel surface. At this time, the application may be designed so that noise is assumed to be input and ignored, an error is displayed, or an extremely fine line is drawn.

It is also possible to improve the structure of the pen tip itself so that the above-mentioned incomplete contact is less likely to occur. For example, if the sensor is made of an elastic material such as rubber, the sensor that comes into contact with the panel surface first will not be in contact with the panel surface because it will be compressed by writing pressure. The sensor is easier to touch the panel.

FIG. 7 shows an example thereof. Elastic bodies 7-3 and 7-4 are provided at the bases of the sensor 7-1 and the sensor 7-2. The part of the sensor that contacts the panel has a problem of damage to the panel and friction, and the part protruding from the pen body has a problem of strength. Therefore, in FIG. 7, the elastic body is arranged at the base of the sensor. . In the figure, the elastic body is expressed like a spring, but rubber, sponge, gas (for example, air) or the like may be used instead of the spring. Further, in this embodiment, more positive improvement is made so that when one sensor is pressed against the panel surface and contracts, the other sensor pops out by the seesaw principle. In the figure, 7-5 is a lever and 7-6 is its fulcrum.

FIG. 8A shows another embodiment. The tip portion 8-5 of the pen shaft is structured so that the head can be swung around the fulcrum 8-6. The sensors 8-1 and 8-2 change their directions together with the tip portion 8-5 when they are brought into contact with the panel.
FIG. 8B is a cross-sectional view of FIG. 8A, showing elastic bodies 8-3, 8-
No. 4 is the tip 8-5 when the pen pressure is not applied.
To restore the original angle.

FIG. 9 shows the same function as above using a fluid (for example, air). 9-5 of a figure is a cylinder, The inside is filled with the fluid. The sensors 9-1 and 9-2 are fixed to the pistons 9-3 and 9-4. The fluid is preferably elastic.

[0054]

By constructing the coordinate input pen as described above, the troublesomeness of command selection in the conventional menu system or shortcut system can be eliminated. In addition, it is possible to draw with a more natural operation than the pen pressure sensing method. Further, unlike the marker, it is not necessary to prepare a plurality of pens having different colors and different core thicknesses. Then, it becomes possible to construct a system having both usability such as a marker and a flexible editing environment provided by a computer.

In the pen of the present invention, there is no need to prepare a large number of pens having different distances between the two sensors or to make the distance between the sensors expandable. By changing the proportional coefficient K or R by software, it is possible to change the distance between the sensors apparently. The present invention is different in this respect from the marker in which a plurality of cores having different core thicknesses must be prepared.
Even if the menu method is adopted to select the proportionality coefficient, the chance of selecting the menu is significantly reduced as compared with the conventional menu-only method. As described above, the present invention can further increase its utility value by being used in combination with a conventional user interface such as a menu system.

Regarding the width of lines drawn with the pen of the present invention,
There are cases where good or bad reproducibility becomes a problem. When the line width selection is small, the reproducibility can be improved by using the non-linear operation 4-13 in FIG. For example, if the line segment connecting the two sensors is near a right angle to the pen movement direction, draw a thick line, draw a thin line if it is close to parallel, and give an error if it is close to 45 °. You can ignore it. This is also an effect that cannot be realized by a conventional marker or the like.

In the above description, only the drawing of a line has been emphasized, but in a drawing tool that handles bitmap graphic information (a so-called "paint-based drawing tool"),
The pen of the present invention is also very useful when it is desired to erase a figure. To erase a figure, draw a line or surface with the same color as the background. With one pen of the present invention, it is possible to efficiently erase small and small figures as well as large and large figures.

By the way, in the case of implementing the present invention with a pen that is not a wireless system, by rotating the pen,
The cable between the pen and the computer may be twisted. To prevent this, the base of the cable (pen side, computer side, or both bases)
The structure can be freely rotated. Therefore, twisting of the cable is not a drawback of the present invention.

The pen adopting the rotation angle detection method of the present invention may be difficult to use for purposes other than drawing, for example, for inputting characters. Depending on the application, you may want to use a traditionally shaped pen. With a wired pen, you can easily replace it with a conventional pen if the cable root is a connector (plug and receptacle). Alternatively, only the pen tip may be exchangeable. Therefore, this is also not a drawback of the present invention.

[Brief description of drawings]

FIG. 1 is a structural diagram of a pen showing a first embodiment of the present invention.

FIG. 2 is a structural diagram of a pen showing a third embodiment of the present invention.

FIG. 3 is a diagram showing a locus and a drawing figure of a pen according to the first and second embodiments of the present invention.

FIG. 4 is a block diagram of a pen peripheral circuit according to the first embodiment of the present invention.

FIG. 5 is a flow chart around a pen according to a second embodiment of the present invention.

FIG. 6 is a structural diagram of a pen showing a third embodiment of the present invention.

FIG. 7 is a structural diagram of a pen showing a third embodiment of the present invention.

FIG. 8 is a structural diagram of a pen showing a third embodiment of the present invention.

FIG. 9 is a structural diagram of a pen showing a third embodiment of the present invention.

FIG. 10 is a diagram showing a system example of a conventional input device.

FIG. 11 is a diagram showing an example of a menu screen of a conventional graphic information processing apparatus according to a menu system.

FIG. 12 is a diagram showing an example of a menu screen of a conventional graphic information processing apparatus according to a menu system.

FIG. 13 is a diagram showing a marker which is a conventional writing tool and its trajectory.

FIG. 14 is an explanatory diagram of a rotation angle of a pen.

[Explanation of symbols]

1-1, 1-2, 2-1, 2-2, 7-1, 7-2, 8
-1, 8-2, 9-1, 9-2 Pen position (coordinate) detection sensor 1-3, 1-4, 2-3 Guide 7-3, 7-4, 8-3, 8-4 Spring 7-5, 7-6, 8-5, 8-6 lever and fulcrum 9-3, 9-4 piston 9-5 cylinder

Claims (16)

[Claims] 1. A pen with a rotation angle detecting function, which has a rotation angle detecting device for detecting a rotation angle of a pen with a pen axis as a rotation axis. 2. The pen with a rotation angle detecting function according to claim 1, wherein a cross-sectional shape perpendicular to the pen axis is a non-circular shape. 3. The pen with a rotation angle detecting function according to claim 2, wherein the cross section of the pen shaft is provided with one or more grooves so that the cross sectional shape perpendicular to the pen shaft is non-circular. A pen with a rotation angle detection function. 4. The pen with a rotation angle detecting function according to claim 2, wherein the cross section of the pen axis is an ellipse. 5. A pen with a rotation angle detecting function, wherein the pen with a rotation angle detecting function according to claim 1 is provided with one or a plurality of coordinate detecting elements. 6. The rotation angle detecting function according to claim 5, wherein a guide for a rotation angle when the pen is brought into contact with a panel is provided around the detecting element. pen. 7. A pen with a rotation angle detecting function, wherein all the detection elements of the pen with a rotation angle detecting function according to claim 5 are embedded in a reinforcing material provided at a pen tip. 8. The coordinate detecting element of the pen with a rotation angle detecting function according to claim 5, when detecting contact with a panel surface,
The touch-sensitive element is stored in the pen body, or
A pen with a rotation angle detection feature that elastically contracts and shortens. 9. The rotation angle detecting function pen according to claim 5, wherein the coordinate detecting element has a plurality of coordinate detecting elements, and when the coordinate detecting element detects a contact with a panel surface, the remaining coordinate detecting element does not detect the contact. However, the pen with the rotation angle detection function is characterized in that it protrudes from the pen body and becomes longer. 10. A pen-type coordinate input device pen having a function of reading the coordinates pointed by the pen tip when the pen tip is brought into contact with the surface of a display or a tablet, wherein the pen is one of claims 1 to 9 above. At least of
A pen-type coordinate input device having one. 11. A pen-type coordinate input device pen having a function of reading coordinates pointed by a pen tip when the pen tip is brought close to the surface of a display or a tablet, wherein the pen is one of the above claims 1 to 5. At least of
A pen-type coordinate input device having one. 12. A pen-type coordinate input device pen having a function of reading coordinates pointed by a pen tip when the pen tip is brought into contact with or brought close to the surface of a display or a tablet, wherein the pen axis is a rotation axis, The pen tip has a plurality of coordinate detection elements, and at least a computing device in the pen body or outside the pen, wherein a plurality of coordinate values pointed by the plurality of detection elements are processed to calculate a rotation angle. Pen type coordinate input device. 13. A display or a tablet,
In a pen-type coordinate input device having a pen for inputting coordinates, a pen axis is a rotation axis, a rotation angle detection device is provided in the pen, and an attribute of information processed according to an output of the rotation angle detection device. A pen with a rotation angle detection function and a pen-type coordinate input device, characterized in that an information processing device for changing the position is provided on the pen body or outside the pen. 14. The information processing apparatus according to claim 13, wherein the relationship of the change amount of the information attribute with respect to the change amount of the rotation angle with the pen axis as the rotation angle is not proportional but nonlinear. A pen with a rotation angle detection function and a pen-type coordinate input device, which are provided outside the pen. 15. In the claim 13 and the claim 14, in particular, the information to be processed is a graphic including one or more straight lines or curves, and the attribute to be changed is its line width. In some cases, the line width is changed in association with the change of the rotation angle and the traveling direction of the pen, and the pen and the pen-type coordinate input device with the rotation angle detection function. 16. A pen having a pen axis having an elliptical cross section according to claim 4, and when a line is drawn by the pen, the line width is changed in association with a change in a rotation angle or a traveling direction of the pen. In, the thickest line is drawn when the pen advance direction and the minor axis direction of the cross section ellipse match, and the thinnest line is drawn when the pen advance direction and the major axis direction of the cross section ellipse match. A pen with a rotation angle detection function and a pen-type coordinate input device, which are characterized by being drawn.