JP3903543B2 - Display tablet device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention can be attached to and detached from an electronic device for inputting desired instruction information by bringing a touch pen close to the tablet. Display tablet device About.
[0002]
[Prior art]
In recent years, a wide variety of interesting games have been developed for home video game devices, and some of them are very popular as entertainment. As one kind of such video game apparatuses, video game apparatuses mainly intended for infants have been developed.
As such a video game apparatus, one using a picture book type cartridge is known so that an infant can play with interest. By instructing a picture book with a touch pen, various games can be played by switching the game screen or instructing a specific position on the game screen displayed on the monitor screen with the touch pen. In addition, the user can draw a picture freely on the monitor screen by tracing the tablet with a touch pen like drawing on paper with a paintbrush.
[0003]
[Problems to be solved by the invention]
However, in the conventional video game device, when the tablet is traced with the touch pen, the trace drawn on the monitor screen is drawn, but nothing is drawn on the tablet. It was drawing, it was unnatural and it was difficult to write a picture.
[0004]
An object of the present invention is to allow an electronic device that inputs desired instruction information by bringing a touch pen close to a tablet to leave a trace of the touch pen. Display tablet device Is to provide.
Another object of the present invention is to provide an electronic device that inputs desired instruction information by bringing a touch pen close to a tablet and can leave a trace of the touch pen.
[0005]
Still another object of the present invention is an electronic device that inputs desired instruction information by bringing a touch pen close to a tablet, and is suitable for an electronic device that can leave a trace of the touch pen. drawing It is to provide a method.
Still another object of the present invention is to provide an information storage medium suitable for an electronic device that inputs desired instruction information by bringing a touch pen close to a tablet and can leave a trace of the touch pen. is there.
[0006]
[Means for Solving the Problems]
The object is to provide a position detection tablet that transmits electromagnetic waves for position coordinate detection, a touch pen provided with an electromagnetic wave receiving antenna at the tip, and a connector portion that removably connects an information storage medium on which a program is recorded. A display tablet device used together with an electronic device, the display tablet device comprising: a display tablet that is detachably mounted on the position detection tablet; and a cap that is detachably mounted on the tip of the touch pen. The display tablet includes a display panel surface and a space for movably storing the magnetic powder, and the magnetic powder is located at the bottom of the space in an initial state and moves when moved to the display panel surface side. The cap is configured to hold the state, the cap is provided with a magnet at the tip, The magnet is smaller than the antenna at the tip of the touch pen, and is provided to be positioned at the center of the antenna when the cap is attached to the tip of the touch pen. The display tablet is mounted on the position detection tablet, and the touch pen When the cap is attached to the tip of the display, the magnetic powder moves to the display panel by the magnetic force of the magnet in response to an operation of moving the tip of the cap close to the display panel. A line, a character, a figure, etc. are displayed by the magnetic powder held along the movement locus and held in the moving state, and the position coordinate detection electromagnetic wave transmitted from the position detection tablet This is achieved by a display tablet device characterized in that position coordinate information corresponding to the movement trajectory is detected and input as operation instruction information to an electronic device. .
[0007]
The display tablet device described above may further include an erasing unit that applies an erasing magnetic field to restore the magnetic powder to an initial state and erases the magnetic powder.
In the display tablet device described above, the display tablet receives electromagnetic waves from the coordinate position detection tablet. With a thickness that does not block It may be attenuated substantially uniformly.
[0009]
The object is to provide a position detection tablet that transmits electromagnetic waves for position coordinate detection, a display tablet that is detachably mounted on the position detection tablet, and a touch pen provided with an antenna for receiving electromagnetic waves and a magnet at the tip. , A cap having a shape attachable to the tip of the touch pen; A connector unit that removably connects an information storage medium in which a program is recorded, and the display tablet includes a display panel surface and a space for movably storing the magnetic powder, and the magnetic powder is initially It is located at the bottom of the space in the state, and is configured to hold the moving state when moved to the display panel surface side, The cap is provided with a magnet at the tip, and the magnet is smaller than the antenna at the tip of the touch pen and is positioned at the center of the antenna when the cap is attached to the tip of the touch pen. It is provided to When the display tablet is mounted on the position detection tablet, the magnetic powder is generated by the magnetic force of the magnet in response to an operation of moving the tip of the touch pen close to the display panel surface. A line, a character, a figure, etc. are displayed by the magnetic powder that moves to the surface and is held along the movement locus, and the movement state is held, and the position coordinate detection electromagnetic wave transmitted from the position detection tablet By an electronic device configured to be received by the antenna through the display tablet, and position coordinate information corresponding to the movement trajectory is detected and input as operation instruction information to the electronic device. Achieved.
[0010]
The object is to provide an image drawing method for drawing an image on a monitor screen by the electronic device described above, in accordance with a movement locus of the touch pen. Said Based on the instruction information, display Tablet Display panel This is achieved by an image drawing method characterized in that a figure substantially the same as the figure drawn on the screen is drawn on the monitor screen.
The object is an information storage medium attached to the electronic device described above, based on the instruction information to the tablet according to the movement locus of the touch pen, display This is achieved by an information storage medium that stores a program for drawing on the monitor screen substantially the same figure as the figure drawn on the tablet.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
(Outline of video game device)
First, an outline of the video game apparatus according to the present embodiment will be described with reference to FIG. FIG. 1 is a perspective view showing a state in which a video game device is played with a magnetic tablet and a magnetic pen according to an embodiment of the present invention attached thereto.
[0012]
A magnetic tablet 100 is placed on the drawing tablet 24 of the game apparatus body 10, and a magnetic pen 200 is attached to the tip of the touch pen 28. A picture book type software cartridge 12 is attached to the game apparatus main body 10, and a monitor 90 is connected via a connection cord 92.
As shown in FIG. 1, when the player traces the magnetic tablet 100 with the touch pen 28, pictures such as characters and figures are drawn on the magnetic tablet 100. The locus of the touch pen 28 is also detected by the drawing tablet 24, and the same picture as that drawn on the magnetic tablet 100 is also displayed on the monitor 90.
[0013]
Next, each member constituting the video game apparatus of the present embodiment will be described.
(Game device itself)
The game apparatus main body of the video game apparatus of this embodiment will be described with reference to FIG.
The video game apparatus of the present embodiment is one in which a picture book type software cartridge 12 is mounted on a foldable game apparatus body 10. As shown in FIG. 2, the upper lid 16 is removed from the bottom lid 14 of the game apparatus main body 10 and opened, and the software cartridge 12 is inserted into the cartridge slot 18 inside thereof.
[0014]
Inside the bottom cover 14 of the game apparatus body 10, a direction button 20 and an execution button 22 are provided on the left side, a drawing tablet 24 is provided in the center, and a touch pen holder 26 is provided on the right side.
The direction button 20 and the execution button 22 are operated by the player. The direction button 20 is used to instruct four directions (up, down, left and right), and the execution button 22 is used to give an execution instruction. The touch pen holder 26 holds the touch pen 28. The touch pen 28 is used to operate the picture book software by touching the drawing tablet 24. A pen button 28 a is provided at the tip of the touch pen 28. The player gives an instruction by pressing the pen button 28a.
[0015]
The drawing tablet 24 detects the position where the touch pen 28 is close by the electromagnetic induction method. A plurality of parallel antenna lines are stretched vertically and horizontally on the drawing tablet 24, and radio waves are sequentially transmitted from these antenna lines. The touch pen 28 receives radio waves emitted from the antenna line of the drawing tablet 24. The position of the antenna line at the peak of the reception level is detected as the proximity position of the touch pen 28. The player gives an instruction based on the position by pressing the pen button 28a.
[0016]
A picture book tablet 32 to which a picture book type software cartridge 12 is attached is provided in the center of the upper cover 16 of the game apparatus body 10. The picture book tablet 32 detects a position where the touch pen 28 is close by an electromagnetic induction method similar to that of the drawing tablet 24. A plurality of antenna lines parallel to the picture book tablet 32 are stretched vertically and horizontally, and radio waves are sequentially transmitted from these antenna lines. The touch pen 28 receives a radio wave emitted from the antenna line of the picture book tablet 32 and detects a proximity position.
[0017]
A power switch 34 for turning the power on and off is provided at the lower left part of the picture book tablet 32. A cartridge slot 18 into which the software cartridge 12 is inserted is provided at the lower right side of the picture book tablet 32. The installed software cartridge 12 can be removed from the cartridge slot 18 by pressing the reject button 36.
[0018]
A page sensor 38 is provided on the upper right side in the picture book tablet 32. The page sensor 38 detects which page 42 of the picture book of the software cartridge 12 is open. A cut is formed in the upper right part of each page 42 of the picture book, and the cut width is increased in the page order. By doing so, the number of sensors to be shielded differs according to the opened page, and the currently opened page can be detected.
[0019]
The software cartridge 12 has a basic form like a picture book in which a plurality of pages 42 are bound by a binding ring 40 at the left edge. Each page 42 has a picture corresponding to the game program. A circuit board (not shown) is stored in the board storage section 50 below the software cartridge 12, and a program ROM (not shown) storing a game program is mounted on the circuit board.
[0020]
Next, the hardware configuration of the video game apparatus according to the present embodiment will be described with reference to FIG.
The game apparatus body 10 will be described. The MPU 60 controls the entire video game device. The RAM 62 is a work memory for the MPU 60. A video display processor (VDP) 64 controls drawing processing of a background, a character, and the like. Video information is written into the video RAM 66. The video signal from the video display processor 64 is output from the video terminal 70 to the monitor 90.
[0021]
A voice synthesis LSI (ADPCM) 72 synthesizes all voices such as words spoken by the character. Synthesize and pronounce the sound according to the game. The audio signal from the video display processor 64 and the audio signal from the audio synthesis LSI 72 are mixed and output to the monitor 90 via the audio terminal 76.
The controller 78 monitors the state of the direction button 20, the execution button 22, the touch pen 28, the pen button 28 a, and the page sensor 38, and outputs information input by the player's operation to the MPU 60.
[0022]
The controller 78 drives the picture book tablet 32 and the drawing tablet 24 via the analog switch 80, receives input information from the touch pen 28 by the player's operation, determines the position of the touch pen 28 from the detection signal, The input position information is output to the MPU 60.
The MPU 60, RAM 62, video display processor 64, speech synthesis LSI 72, and controller 78 are connected by an address bus 84, a data bus 86, and a control bus 88.
[0023]
In the software cartridge 12, a program ROM 54 storing a game program is mounted on the circuit board 48. The software cartridge 12 is connected to the game apparatus body 10 via connectors 49 and 82, and an address bus 84, a data data bus 86, and a control bus 88 are connected thereto. A power supply line (not shown) is also connected to the software cartridge 12 via connectors 49 and 82.
[0024]
(Magnetic tablet)
Next, the magnetic tablet according to the present embodiment will be described with reference to FIGS. FIG. 4A is a perspective view of the magnetic tablet, and FIG. 4B is a cross-sectional view of the magnetic tablet. FIG. 5 is an explanatory diagram of a method of using a magnetic tablet.
In the magnetic tablet 100 of this embodiment, as shown in FIG. 4A, the periphery of the rectangular display panel 102 is reinforced by a frame-like frame body 104. The size of the display panel 102 is approximately the same size as the drawing tablet 24 of the game apparatus body 10. An erasing lever 106 and a groove 108 in which the erasing lever 106 slides are formed at the front edge of the frame body 104.
[0025]
As shown in FIG. 4B, the display panel 102 has a cross-sectional structure in which the upper and lower sides of the separator 110 are sandwiched between protective plates 112 and 114. The upper separator 112 is transparent. The liquid magnetic body 116 for displaying the trajectory is a viscous liquid, for example, a mixture of iron and iron in oil. In the region where the liquid magnetic body 116 is located below the separator 110, only the separator 110 can be seen from the protective plate 112 of the display panel 102. However, when the liquid magnetic body 116 is located above the separator 110, the display panel 102 is visible. The liquid magnetic body 116 appears black from the protective plate 112. An erasing magnet 118 that moves to the left and right by the erasing lever 106 is located below the lower protective plate 114.
[0026]
As shown in FIG. 5A, the touch pen 28 having the magnetic pen 200 attached to the pen tip is a display panel. 102 When the protective plate 112 is traced, the liquid magnetic body 116 moves onto the separator 110 and is held as it is even when the touch pen 28 is separated. Therefore, the locus of the touch pen 28 is drawn on the display panel 102 as a black line.
[0027]
When the erasing lever 106 is moved to the left and right, the erasing magnet 118 is moved to the left and right under the protective plate 114 as shown in FIG. The liquid magnetic body 116 moves to the lower side of the separator 110 over the entire surface by the magnetic force of the erasing magnet 118, and the picture drawn on the display panel 102 is erased.
Since the magnetic tablet 100 is mounted on the drawing tablet 24, the magnetic tablet 100 needs to have a thickness that does not block electromagnetic waves from the drawing tablet 24. When the magnetic tablet 100 is attached, attenuation of electromagnetic waves from the drawing tablet 24 is inevitable, but the attenuation characteristics are set to the same thickness so that the electromagnetic waves are uniformly attenuated so that the position detection sensitivity does not deteriorate. Like.
[0028]
(Magnetic pen)
Next, various specific examples of the magnetic pen according to the present embodiment will be described with reference to FIGS.
The magnetic pen shown in FIGS. 6 and 7 is of a type that covers the tip of the touch pen 28 of an existing video game apparatus.
[0029]
The magnetic pen 200 shown in FIG. 6 has a small magnet 204 attached to the tip of a plastic cap 202. The pen button 28 a at the tip of the touch pen 28 is fitted into the inner surface of the tip of the cap 202. The pen button 28a and the magnetic pen 200 move together.
When a player holds the touch pen 28 to which the magnetic pen 200 is attached and traces the display panel 102 of the magnetic tablet 100, a picture is drawn by the magnetic force of the magnet 204, and an electromagnetic wave from the drawing tablet 24 is drawn by the antenna. Is received and the position is detected. When the player presses the pen tip of the touch pen 28, the pen button 28a is pressed together with the magnetic pen 200.
[0030]
In the magnetic pen 200 of FIG. 7, a small magnet 204 is attached to the tip of a rubber cap 206. A bellows 206a is partially formed on the body of the cap 206. The magnetic pen 200 attaches and fixes the body of the cap 206 to the body near the tip of the touch pen 28. Since the bellows 206a is formed on the body of the cap 206, only the tip of the cap 206 including the magnet 204 moves together with the pen button 28a.
[0031]
When a player holds the touch pen 28 to which the magnetic pen 200 is attached and traces the display panel 102 of the magnetic tablet 100, a picture is drawn by the magnetic force of the magnet 204, and an electromagnetic wave from the drawing tablet 24 is drawn by the antenna. Is received and the position is detected. When the player presses the tip of the touch pen 28, the pen button 28a moves together with the tip of the cap 206.
[0032]
The attachment position of the magnetic pen 200 shown in FIGS. 6 and 7 will be described with reference to FIG. 8A to 8C are views of the touch pen 28 from the tip side.
FIG. 8A shows the structure inside the tip side of the touch pen 28. A circuit board 28 b is provided inside the touch pen 28. A layered antenna 28c is formed on the tip side of the circuit board 28b. A shield plate 28d is provided to shield the antenna 28c and other circuit elements (not shown) on the circuit board 28b.
[0033]
When a large magnet is provided at the pen tip of the touch pen 28, electromagnetic waves from the drawing tablet 24 are attenuated by the magnet, making it difficult to detect position coordinates.
Therefore, in the present embodiment, as shown in FIG. 8B, the magnet 204 is made smaller than the antenna 28c and is accurately positioned at the center. The size of the magnet 204 is preferably about 2 mm.
[0034]
Even when the small magnet 204 is used, as shown in FIG. 8C, when the center is shifted from the center toward the antenna 28c, the attenuation of electromagnetic waves increases, and the position of the drawing tablet 24 may be difficult to detect. .
The magnetic pen shown in FIGS. 9 and 11 is of an integrated type in which a magnet is attached to the tip of the touch pen 28, and is used by replacing the touch pen 28 of an existing video game apparatus.
[0035]
The touch pen 28 in FIG. 9 has a magnet 210 attached to the surface of the internal circuit board 28b opposite to the antenna on the tip side. As shown in FIG. 10, a circuit board 28b is provided inside the touch pen, and a layered antenna 28c is formed on the tip side of the circuit board 28b. The antenna 28c on the circuit board 28b and other circuit elements (not shown). A shield plate 28d is provided to shield the screen. The magnet 210 is fixed to the surface of the circuit board 28b opposite to the antenna 28c.
[0036]
When a player holds the touch pen 28 to which a magnet is attached and traces the display panel 102 of the magnetic tablet 100, a picture is drawn by the magnetic force of the magnet 210, and an electromagnetic wave from the drawing tablet 24 is received by the antenna 28c. The position is detected. When the player presses the pen tip of the touch pen 28, the pen button 28a is pressed.
[0037]
The touch pen 28 in FIG. 11 has a small magnet 212 embedded in a pen button 28a at the tip of the touch pen 28 by integral molding.
When a player holds the touch pen 28 to which the magnet is attached and traces the display panel 102 of the magnetic tablet 100, a picture is drawn by the magnetic force of the magnet 212 and electromagnetic waves from the drawing tablet 24 are received by the antenna 28c. The position is detected. When the player presses the pen tip of the touch pen 28, the pen button 28a is pressed.
[0038]
(Electromagnetic wave detection method)
Next, the electromagnetic wave detection method according to the present embodiment will be described with reference to FIGS. FIG. 12 is a circuit diagram of the electromagnetic wave detection circuit according to the present embodiment, and FIG. 13 is an explanatory diagram of the electromagnetic wave detection method according to the present embodiment.
As described above, when the magnetic tablet 100 is attached, the electromagnetic wave from the drawing tablet 24 is attenuated. In the present embodiment, the position can be detected even when the electromagnetic wave is attenuated.
[0039]
FIG. 12 shows an electromagnetic wave detection circuit according to the present embodiment. A first-stage amplifier 222 that amplifies the detection signal is connected to the antenna 200. A ceramic filter 224 for filtering the amplified detection signal is connected to the first stage amplifier 222. Connected to the ceramic filter 224 is an analog IC 226 that performs position detection from the filtered detection signal. A variable resistor 228 is connected to the analog IC 226 for position correction.
[0040]
FIG. 13A shows an input signal to the analog IC 226 after the detection signal from the antenna 220 is amplified by the first stage amplifier 222 and filtered by the ceramic filter 224.
When the touch pen 28 is sufficiently close to the drawing tablet 24 and is not attenuated by the magnetic tablet 100, a large input signal S1 is obtained. For this input signal S1, a relatively large threshold level V1 as shown in FIG. 13 (a) is set. The output signal S3 of the analog IC 226 corresponding to the input signal S1 is a signal that falls at time T1 and rises at time T2, as shown in FIG. 13B. Therefore, the detection time T is
T = (T1 + T2) / 2
It becomes.
[0041]
When the magnetic tablet 100 is attached to the drawing tablet 24 and the radio wave from the drawing tablet 24 is attenuated, a small input signal S2 is obtained. A relatively small threshold level V2 as shown in FIG. 13A is set for the input signal S2. The output signal S4 of the analog IC 226 corresponding to the input signal S2 is a signal that falls at time T3 and rises at time T4, as shown in FIG. 13B. Therefore, the detection time T ′ is
T ′ = (T3 + T4) ÷ 2
It becomes.
[0042]
In this way, as is clear from FIG. 13B, the detection time is almost the same for both the large input signal S1 and the small input signal S2 (T = T ′).
Thus, if the threshold level is set to a magnitude corresponding to the magnitude of the input signal as in the present embodiment, stable position detection is possible even if the magnitude of the input signal varies.
[0043]
The present invention is not limited to the above embodiment, and various modifications can be made.
For example, although the video game device for infants is used in the above embodiment, the present invention may be applied to game devices having other configurations.
Further, the present invention may be applied not only to a game device but also to an electronic device such as an electronic tablet that electronically writes pictures.
[0044]
【The invention's effect】
As described above, as in the present invention, the position detection tablet for transmitting the position coordinate detection electromagnetic wave, the touch pen provided with the electromagnetic wave receiving antenna at the tip, and the information storage medium on which the program is recorded can be attached and detached. A display tablet device used together with an electronic device having a connector portion to be connected, wherein the display tablet device is detachably mounted on a position detection tablet and a tip of a touch pen. The display tablet includes a display panel surface and a space for movably storing the magnetic powder, and the magnetic powder is located at the bottom of the space in the initial state and is moved when moved to the display panel surface side. The cap is provided with a magnet at the tip, The magnet is smaller than the antenna at the tip of the touch pen, and is provided to be positioned at the center of the antenna when the cap is attached to the tip of the touch pen. A display tablet is mounted on the tablet for position detection, and touch pen When the cap is attached to the tip of the display, the magnetic powder moves to the display panel by the magnetic force of the magnet in accordance with the operation of moving the tip of the cap close to the display panel. The magnetic powder that is held in the moving state is displayed with lines, characters, figures, etc., and the electromagnetic waves for position coordinate detection transmitted from the position detection tablet are received by the antenna via the display tablet and moved. Since the position coordinate information corresponding to the locus is detected and input as operation instruction information to the electronic device, the touch pen is brought close to the tablet to the electronic device that inputs desired instruction information. Can leave the trajectory of Moreover, the attenuation of electromagnetic waves by the magnet can be minimized. The
[0046]
In addition, as in the present invention, a position detection tablet for transmitting a position coordinate detection electromagnetic wave, a display tablet detachably mounted on the position detection tablet, an electromagnetic wave receiving antenna and a magnet are provided at the tip. Touch pen, A cap that can be attached to the tip of the touch pen; A display unit having a display panel surface and a space for movably storing the magnetic powder, and the magnetic powder is in an initial state. It is located at the bottom of the space and is configured to maintain the moving state when moved to the display panel surface side. The cap is provided with a magnet at the tip, and the magnet is smaller than the antenna at the tip of the touch pen, and is provided to be positioned at the center of the antenna when the cap is attached to the tip of the touch pen. And When the display tablet is mounted on the position detection tablet, the magnetic powder moves to the display panel surface by the magnetic force of the magnet and moves according to the operation to move the tip of the touch pen close to the display panel surface. Lines, characters, figures, etc. are displayed by magnetic powder held along the trajectory and held in a moving state, and electromagnetic waves for position coordinate detection transmitted from the position detection tablet are received by the antenna via the display tablet. The position coordinate information corresponding to the movement trajectory can be detected and the trajectory of the touch pen can be left for the electronic device configured to be input as operation instruction information to the electronic device. Moreover, the attenuation of electromagnetic waves by the magnet can be minimized. The
[0049]
In addition, as in the present invention, based on the instruction information to the tablet according to the movement trajectory of the touch pen, display If you try to draw on the monitor screen a shape that is substantially the same as the shape drawn on the tablet, display You can draw pictures while looking at the tablet, and you can draw pictures with natural operations.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outline of a video game apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view of a game apparatus body of a video game apparatus according to an embodiment of the present invention.
FIG. 3 is a block diagram of a video game device according to an embodiment of the present invention.
FIG. 4 is a diagram showing a magnetic tablet according to an embodiment of the present invention.
FIG. 5 is an explanatory diagram of a method of using a magnetic tablet according to an embodiment of the present invention.
FIG. 6 is a perspective view showing a specific example of a magnetic pen according to an embodiment of the present invention.
FIG. 7 is a perspective view showing a specific example of a magnetic pen according to an embodiment of the present invention.
FIG. 8 is an explanatory diagram of a mounting position of a magnetic pen according to an embodiment of the present invention.
FIG. 9 is a perspective view showing a specific example of a touch pen according to an embodiment of the present invention.
FIG. 10 is an explanatory diagram of a structure of a specific example of a touch pen according to an embodiment of the present invention.
FIG. 11 is a perspective view showing a specific example of a touch pen according to an embodiment of the present invention.
FIG. 12 is a circuit diagram of an electromagnetic wave detection circuit according to an embodiment of the present invention.
FIG. 13 is an explanatory diagram of an electromagnetic wave detection method according to an embodiment of the present invention.
[Explanation of symbols]
10 ... Game device body
12 ... Game cartridge
14 ... Bottom lid
16 ... Upper lid
18 ... Cartridge slot
20 ... Direction buttons
22 ... execute button
24 ... Tablet
26 ... Touch pen holder
28 ... Touch pen
28a ... Pen button
28b ... Circuit board
28c ... Antenna
28d ... Shield plate
32 ... Picture book mounting part
34 ... Power switch
36 ... Eject button
38 ... Page sensor
40 ... Binding ring
42 ... Page
49 ... Connector
50. Substrate storage part
54 ... Program ROM
60 ... MPU
62 ... RAM
64 ... VDP
66 ... Video RAM
70 ... Video terminal
72 ... ADPCM
76 ... Audio terminal
78 ... Controller
80 ... Analog switch
82 ... Connector
84 ... Address bus
86: Data bus
88 ... Control bus
90 ... Monitor
100 ... Magnetic tablet
102 ... Display panel
104 ... Frame
106 ... Erasing lever
108 ... groove
110 ... Separator
112, 114 ... Protection plate
116 ... Liquid magnetic material
118 ... Erase magnet
200 ... Magnetic pen
202 ... Cap
204: Magnet
206 ... Cap
206a ... bellows
210 ... Magnet
212 ... Magnet
220 ... Antenna
222 ... First stage amplifier
224 ... Ceramic filter
226 ... Analog IC
228 ... Variable resistance

Claims (6)

Along with an electronic device having a position detection tablet for transmitting electromagnetic waves for position coordinate detection, a touch pen provided with an electromagnetic wave receiving antenna at the tip, and a connector for removably connecting an information storage medium on which a program is recorded A display tablet device to be used,
The display tablet device includes a display tablet that is detachably mounted on the position detection tablet, and a cap that is detachably mounted on the tip of the touch pen.
The display tablet includes a display panel surface and a space for movably storing magnetic powder, and the magnetic powder is positioned at the bottom of the space in an initial state, and the moving state is when moved to the display panel surface side. Configured to be retained,
The cap is provided with a magnet at the tip, and the magnet is smaller than the antenna at the tip of the touch pen and is positioned at the center of the antenna when the cap is attached to the tip of the touch pen. It is provided to
Wherein the display tablet mounted on said position detecting tablet, when the cap at the tip of the touch pen is attached, in accordance with the operation of moving closer to the distal end portion of the cap to the display panel surface The magnetic powder moves to the display panel surface by the magnetic force of the magnet and is held along the movement trajectory, and lines, characters, figures, etc. are displayed by the magnetic powder held in the moving state, and the position The position coordinate detection electromagnetic wave transmitted from the detection tablet is received by the antenna via the display tablet, and the position coordinate information corresponding to the movement locus is detected and input as operation instruction information to the electronic device. A display tablet device, comprising:   2. The display tablet device according to claim 1, further comprising an erasing unit that applies an erasing magnetic field to restore the magnetic powder to an initial state and erases the magnetic powder. The display tablet device according to claim 1, wherein the display tablet attenuates substantially uniformly with a thickness that does not block electromagnetic waves from the coordinate position detection tablet. A position detection tablet that transmits electromagnetic waves for position coordinate detection;
A display tablet detachably mounted on the position detection tablet;
A touch pen provided with an electromagnetic wave receiving antenna and a magnet at the tip,
A cap having a shape attachable to the tip of the touch pen;
A connector unit that detachably connects an information storage medium on which the program is recorded, and
The display tablet includes a display panel surface and a space for movably storing magnetic powder, and the magnetic powder is positioned at the bottom of the space in an initial state, and the moving state is when moved to the display panel surface side. Configured to be retained,
The cap is provided with a magnet at the tip, and the magnet is smaller than the antenna at the tip of the touch pen and is positioned at the center of the antenna when the cap is attached to the tip of the touch pen. It is provided to
When the display tablet is mounted on the position detection tablet, the magnetic powder is generated by the magnetic force of the magnet in response to an operation of moving the tip of the touch pen close to the display panel surface. A line, a character, a figure, etc. are displayed by the magnetic powder that moves to the surface and is held along the movement locus, and the movement state is held, and the position coordinate detection electromagnetic wave transmitted from the position detection tablet An electronic device configured to be received by the antenna via the display tablet, and position coordinate information corresponding to the movement locus is detected and input as operation instruction information to the electronic device. 5. The image drawing method for drawing an image on a monitor screen by the electronic apparatus according to claim 4 , wherein the figure is substantially the same as the figure drawn on the display panel of the display tablet based on the instruction information corresponding to the movement locus of the touch pen. An image drawing method, wherein the same figure is drawn on the monitor screen. 5. The information storage medium attached to the electronic device according to claim 4 , wherein a graphic substantially the same as a graphic drawn on the display tablet is displayed on a monitor screen based on instruction information corresponding to a movement locus of the touch pen. An information storage medium in which a program for drawing is stored.

Images