JPS63106032A - Input display device - Google Patents

Abstract

PURPOSE:To easily perform the coloration of display on a CRT, etc., or the display classified by an input person, by providing plural writing tools having the different frequencies of alternating field generated from a display signal generation source. CONSTITUTION:Since the frequency of the alternating field generated from the electromagnetic coil 6 of the writing tool 1 is set so as to be changed according to the color of ink, the CRT, etc., receives the output of the frequency as a color classified signal, and displays it in color. Also, when a large number of input persons operate a device, the frequency of the alternating field generated from the electromagnetic coil 6 is changed to be classified by every input person. In such way, when the display is performed on the CRT, etc., it is performed by every input person independently, or a processing to classify the display by every color can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an input display device used in so-called electronic whiteboards and the like.

2. Description of the Related Art Conventionally, there has been provided a writing tool including a pen tip impregnated with ink and a display signal generation source that generates an electrical signal, a display surface on which characters or figures are written with ink by the writing tool, and a display surface on which characters or figures are written with ink by the writing tool, and An input display device has been proposed that includes a writing display surface and a detection surface that electrically detects the position of the pen tip of the writing tool based on a signal from a display signal generation source of the writing tool. and,
To detect the position of the writing tool's pen tip, changes in the resistance of conductive rubber are used.

Problems to be Solved by the Invention However, when performing color printing manually, a switch must be installed on the pen holder or the like to identify the color being input. Furthermore, when erasing data, it is necessary to similarly identify the data using a switch or the like.

Means for Solving the Problems A writing instrument includes a pen tip impregnated with ink and a display signal generation source that generates an alternating magnetic field, a display surface on which characters or figures are written with ink by the writing instrument, and In an input display device comprising a writing display body comprising a detection surface that electromagnetically detects the position of a pen tip of the writing instrument based on a signal from a display signal generation source of the writing instrument, the display signal generation source A plurality of writing tools having different frequencies of alternating magnetic fields generated from the source are provided.

Since there are multiple types of signal frequencies from the display signal source of the writing tool, identification signals such as ink color, type of input user, and erasure are automatically given according to the frequency. It is easy to identify the information, and processing such as selection of display or storage becomes simple.

Example An embodiment of the present invention will be described based on the drawings.

First, a writing tool 1 having a pen shape that is easy to hold by hand is formed. This writing tool 1 is a combination of a cylindrical pen upper cover 2 and a pen lower cover 3 which are divided into two parts, and an ink-impregnable pen nib 4 is attached to the tip of the pen lower cover 3. It is formed protrudingly. The pen tip 4 is connected to an ink reservoir 5 provided at the upper part of the pen lower cover 3. A display signal generation source that generates an alternating magnetic field, that is, an electromagnetic coil 6 is provided below the ink reservoir 5. Further, an electric circuit section 7 is provided below the pen top cover 2, and a battery 8 is disposed above the electric circuit section 7.

A plurality of writing tools 1 formed in this manner are provided, and the oscillation frequency of the electromagnetic coil 6 differs depending on the color of the ink. Further, the oscillation frequency of the electromagnetic coil 6 is set to be different for each color of ink or for each person who inputs information even when the color of ink is a single color.

Next, a writing display body 9 formed in a flat plate shape is provided. This writing display body 9 is provided with a detection surface 11 in the Y-axis direction on the surface of a base 10, a detection surface 12 in the X-axis direction on this detection surface 11, and further on this detection surface 12. A display surface 13 on which characters and figures can be displayed using ink and which can also be erased is provided, and these are integrally laminated.

Next, the structure of the detection surface 11 will be explained based on FIG. 4. The one shown in the figure is shown in a fairly rough state for explanation, but with respect to the common terminal 14 marked H, A,
Terminals 15 labeled B, C, D, E, F are provided, and H
and A, B, C, D.

A conducting wire 16 is wired between each of E and F so as to have at least one turn. This structure is similar to the above-mentioned detection surface 12, but the conductive wires 1
The directions of 6 are orthogonal to each other.

Further, an erasing tool 17 formed in the shape of a rectangular parallelepiped is provided. An erasing surface 18 made of felt or the like is provided on one surface of the erasing tool 17, and an electromagnetic coil 19 as an erasing signal generation source that oscillates at a frequency different from the oscillation frequency of the electromagnetic coil 6 of the writing tool 1 is provided inside. is provided. Further, the other end is provided with a power supply unit 20 that includes an electric circuit and a battery.

In such a configuration, by bringing the pen tip 4 of the writing instrument l into contact with the display surface 13 and moving it, characters and figures are drawn in ink on the display surface 13 in the same way as with a normal writing instrument. At this time, since an electromagnetic signal of a certain frequency is generated from the electromagnetic coil 6, for example, assuming that the pen tip 4 is located at point G, the common terminal 14 shown in FIG.
An induced voltage is generated between the C and D terminals 15. That is, an induced voltage is generated between H and 0 and between HD and D.

And almost no induced voltage is generated between H-A, H-B, H-E, and H-F. The induced voltage thus obtained is output at the same frequency as the frequency of the alternating current magnetic field applied to point G by the electromagnetic coil 6. Further, a detection output is similarly extracted from the detection surface 12 in the X-axis direction.

In this way, by extracting the electrical outputs in the X-axis direction and the Y-axis direction, the position of the pen tip 4 of the writing instrument 1 on the display surface 13 is extracted as an electrical signal, which can be used on a CRT, large display, or memory. By connecting to the display screen 13, the same content as that displayed on the display surface 13 is displayed or stored.

Since the frequency of the alternating magnetic field generated from the electromagnetic coil 6 of the writing tool 1 is set to differ depending on the color of ink, the output of that frequency is received as a color-specific signal on a CRT, etc. indicate.

Further, when there are many input users, the frequency of the alternating magnetic field generated from the electromagnetic coil 6 is changed for each input user. As a result, in the case of display on a CRT, etc., it becomes possible to perform processing such as displaying each input person separately or color-coding them.

Therefore, when using the ink color classification and the input user classification at the same time, it is necessary to ensure that the frequency for each color and the frequency for each input user are not the same.

That is, for example, the frequency of each color is 10, 20.30 (kHz
)..., and the number for each inputter is 11, 21.31 (k
Hz)......

Next, to erase the displayed content, the erasing tool 17 is used. By rubbing the display surface 13 with the erasing surface 18, the ink is erased in the same manner as when wiping a regular blackboard, and the electromagnetic coil 1
9, a signal of a predetermined frequency is applied to the detection surface 11, 12, and the written signal is erased. That is, since the frequency of the signal from the electromagnetic coil 19 is set in advance to be for erasing, an electronic circuit (not shown) operates so that the display on the CRT or the like or the contents of the memory are erased.

Effects of the Invention The present invention provides a writing tool including a pen tip impregnated with ink as described above and a display signal generation source that generates an alternating magnetic field;
a display surface on which characters and figures are written with ink by the writing tool; and a detection surface that electromagnetically detects the position of the pen tip of the writing tool based on a signal from a display signal generation source of the writing tool. In an input display device comprising a writing display body, a plurality of writing tools having different frequencies of alternating magnetic fields generated from the display signal generation source are provided, and the frequency of the alternating magnetic field of the writing tools is different depending on the color of ink. By changing the display to a different color for each input user, it is possible to easily color the display on a CRT, etc., or display it for each input user. It can also be easily erased by using a different frequency for the erasing tool.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a partially cutaway side view of the writing tool, and FIG. 3 is an exploded perspective view of the writing display. 4 is a perspective view showing one detection surface, and FIG. 5 is a perspective view of the erasing tool. 1... Writing instrument, 4... Pen tip, 6... Electromagnetic coil (display signal generation source), 9... Writing display body, 11.12
... detection surface, 13 ... display surface, 17 ... erasing tool,
18... Erasing surface, 19... Electromagnetic coil (erasing signal generation source) Applicant Tokyo Electric Co., Ltd. J J Figure

Claims (1)

[Claims] 1. A writing tool comprising a pen tip impregnated with ink and a display signal generation source that generates an alternating magnetic field, and a display surface on which characters and figures are written with ink by the writing tool. In an input display device comprising a writing display body comprising a detection surface that electromagnetically detects the position of a pen tip of the writing instrument based on a signal from a display signal generation source of the writing instrument, the display signal generation source An input display device comprising a plurality of writing tools having different frequencies of alternating magnetic fields generated from a source. 2. The input display device according to claim 1, wherein an alternating magnetic field having a different frequency is generated for each color of ink. 3. The input display device according to claim 1, wherein an alternating magnetic field of a different frequency is generated for each input user. 4. A writing tool comprising a pen tip impregnated with ink and a display signal generation source that generates an alternating magnetic field, a display surface on which characters and figures are written with ink by the writing tool, and a display of the writing tool. In an input display device comprising a writing display body having a detection surface that electromagnetically detects the position of a pen tip of the writing instrument based on a signal from a signal generation source, an alternating magnetic field generated from the display signal generation source. A plurality of writing tools with different frequencies are provided, an erasing signal generation source generates an alternating magnetic field with a frequency different from that of the writing tools, and an erasing signal generator that erases characters and figures displayed in ink on the display surface. An input display device characterized by being provided with an erasing tool having a surface.