JPH0428798Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a magnetic drawing board that displays characters, figures, etc. by attracting magnetic powder filled with viscous fluid into a sealed honeycomb-shaped chamber with a magnetic pen. In particular, information such as characters and figures displayed on a magnetic drawing board is replaced with electrical signals and displayed on an external CRT display device, and images are also displayed on an external display device based on position coordinate information input using a menu method. The present invention relates to a magnetic drawing board on which games can be played by manipulating images of game software.

(Prior Art) A magnetic drawing board that can display characters and figures by attracting magnetic powder sealed together with a viscous fluid in a non-magnetic airtight container with a magnetic pen is disclosed in, for example, Utility Model Application No. 56-81799. Those disclosed in official gazettes are known.

FIG. 5 shows an example of the conventional magnetic drawing board mentioned above. A magnetic drawing board display section 1 is located in the middle part of the interior of 6.
2 is provided. Furthermore, this display section 12 is constructed by filling a large number of small chambers 7 formed in a honeycomb shape with a highly viscous fluid and magnetic powder 8, and also filling a surface plate 4 with a highly viscous fluid and magnetic powder 8.
The display section 12 is sealed by the back plate 5.
When the magnetic pen 10 with a permanent magnet at the tip is brought into contact with the magnetic pen 10 from above and moved, the magnetic powder in each honeycomb-shaped chamber is attracted to the surface plate 4 side, and the magnetic pen 1
A drawing is displayed along the movement trajectory of 0. Also,
When erasing characters and figures drawn on the display section 12, when the erasing lever 9 on the left side of the figure is moved within the space 11 in the direction of the arrow shown in the figure, the attraction force of the magnetized erasing lever 9 , the magnetic powder 8 adsorbed on the front plate 4 side is attracted to the back plate 5 side, and all characters and figures seen from the upper plate 3 side are erased.

(Problems to be Solved by the Invention) The above-mentioned magnetic drawing board was developed for the purpose of being an educational toy, and is very simple in construction and inexpensive. However, since the magnetic material is handled mechanically, there is a problem that it lacks expandability and that the simple drawing function becomes gradually boring.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a magnetic drawing board that eliminates the above-mentioned drawbacks and is highly expandable by adding electrical means to the magnetic drawing board.

(Means for Solving the Problems) The magnetic drawing board of the present invention displays characters, figures, etc. by attracting magnetic powder filled with viscous fluid into a number of small chambers formed in a honeycomb shape using a magnetic pen. A magnetic screen display section, and a transparent transparent panel that is removably provided on the top surface of the magnetic screen display section and seals the small chamber filled with the viscous fluid and magnetic powder, detects the pressed position of the magnetic pen, and outputs a coordinate signal. a coordinate input sheet, a control unit that controls the coordinate signals and displays information such as the characters and figures on an external CRT display device, and a ROM cassette that stores image information and is detachably attached to the drawing board body. and the above
The present invention is characterized in that the image read from the ROM cassette and displayed on the external CRT display device is given movement by moving the magnetic pen on the coordinate input section.

(Function) In the magnetic drawing board of the present invention, a transparent coordinate input sheet is pasted above the magnetic drawing board display part to form the magnetic drawing board display part, and the upper surface of the coordinate input part which also serves as the magnetic drawing board display part is attached with a magnetic pen. When pressed lightly, the magnetic powder filled in the honeycomb-shaped chambers of the magnetic drawing board is attracted, and the desired characters and figures are displayed on the top surface of the transparent coordinate input sheet, as well as the positional information of the pressed point of the magnetic pen. It converts it into an electrical signal and displays it on an external CRT display device, and gives movement to the image read out from the ROM cassette and displayed on the external CRT display device based on the position information obtained by pressing the magnetic pen. Manipulate.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 1, the outer surface of the magnetic drawing board 21 is composed of a frame 22 and a bottom plate 23 made of a non-magnetic material such as resin or wood, and a magnetic drawing board display section 24 is provided approximately at the center of the frame 22. . Similarly, the magnetic drawing board display section 24 is made of a non-magnetic material, and a large number of small chambers 25 shaped like a honeycomb are placed on the back plate 28, and the small chambers 25 are filled with high viscosity fluid and magnetic powder 26. At the same time, resistance sheets 30 and 31, which will be described later, are pasted above the small chamber 25, and the small chamber 25 and the back plate 2 are bonded together.
8 and the resistance sheet 31 are integrally joined to form the drawing board display section 24. Note that the height dimension of the honeycomb-shaped chamber is slightly smaller than that of the conventional one.

On the other hand, on the resistance sheet 31 on the upper surface of the magnetic screen display section 24 described above, a resistance sheet 30 forming a pair with the resistance sheet 31 is placed. By pressing the surfaces of these pair of resistance sheets 30 and 31 with a writing instrument or a finger, the two sheets come into contact with each other,
This device is similar to a coordinate input device called a tablet, which detects the X and Y coordinates of a contact point in an analog manner as a current or voltage value.

Although the resistance sheets 30 and 31 shown in the drawings are shown enlarged in the thickness direction, they are actually made of a thin film of indium oxide or tin oxide on one side of a transparent insulating sheet such as a thin plate-shaped glass mylar film. It is a transparent resistor on which a resistive layer is uniformly deposited, and parallel electrodes made of a material such as silver paste are provided at both ends of the resistive layer.

Next, as shown in FIGS. 2 and 3, the upper surface of the magnetic screen 21 is composed of a coordinate input section 33 which also serves as the magnetic screen display surface 24, and an operation section 32. Furthermore, the operation section 32 has 16 colors. Operation buttons such as a color designation key, a reset button, a memory button, a memory call button, a box fill button, and a power switch are provided, and an interface circuit 35 shown in FIG. 2 converts the coordinate output signal from analog to digital. The control section 36 is composed of an A/D conversion section, and has functions such as an input port for color designation keys, a system ROM, RAM, VRAM, and a CRT drive section. Note that the above-mentioned interface circuit 35 and control section 36 are composed of a 1-chip microcomputer, and the screen main body 21a
is stored in

Then, the output of the control section 36 is converted into analog data and then outputted as image information to an external CRT display device 37.

On the other hand, the drawing board main body 21a is provided with a ROM cassette 40 storing game software, etc., and a menu input sheet 27, as shown in FIG.
The ROM cassette 40 is inserted into a ROM cassette insertion slot 41 provided on the side of the drawing board body 21a.

In addition, as shown in FIG. 4, a menu input sheet 2 is provided on which an X coordinate axis 27a, a Y coordinate axis 27b, and a pseudo operation key 27d are printed on a transparent mylar film.
7 is attached to the coordinate input section 33 of the drawing board main body 21a.

Here, the ROM cassette 40 is attached to the drawing board main body 21a.
When it is attached to the computer, the character and figure input mode automatically switches to the menu-based game mode, and by specifying the coordinate position from the top of the menu input sheet using the magnetic pen 34, external
It becomes possible to freely manipulate the image displayed on the CRT display device 37.

In this case, the center part 2 of the menu input sheet 27
7c is the origin of the XY coordinate axes, and when the magnetic pen 34 is moved from the origin in any direction on the XY coordinate axes,
It is configured to output a coordinate signal according to the distance traveled. Thus, the magnetic pen 34 functions similar to the joystick of a gaming computer.
Note that the pseudo operation keys 27d printed on the menu input sheet 27 are input keys necessary for operating game software other than joystick, and various operations can be performed by specifying this position.

Next, the operation of the present invention will be explained. When the tip of the magnetic pen 34 is placed on the coordinate input section 33 that also serves as the magnetic display surface of the drawing board body 21a and pressed lightly, the magnetic powder 26 in the small chamber 25 below the magnetic pen 34 is attracted upward, and the magnetic pen 34 is moved. Transparent resistance sheets 30, 31 are drawn with characters and figures according to the
A drawing is displayed on the coordinate input section 33 which also serves as a display surface.

At the same time, by pressing the magnetic pen 34, the coordinate position of the contact point on the resistance sheet 30 is changed to the other resistance sheet 3.
The electric signal is detected as the partial voltage ratio of the resistance at one electrode. The detected analog coordinate signals are A/D converted by the interface circuit 35 and sent to the control section 36 as XY coordinate signals. The control unit 36
The coordinate signal is taken into the RAM and stored, and an image signal is output based on predetermined information stored in the ROM, and an external CRT display device 37 is driven for display.

If you select the color designation button on the operation unit 32 to start drawing, the characters and figures raised by the magnetic powder 26 will be in monochrome tone, but the image displayed on the external CRT display device 37 will be in the designated color. In response to this, further operate the box file button of the operation section 32,
You can fill the inside of the drawn shape's frame with a specified color.

Furthermore, when the above-mentioned character and figure input mode is switched to the game mode and the game is executed, the ROM cassette 40 is inserted into the drawing board main body 21a.
Insert it into the ROM cassette insertion slot 41, and
The menu input sheet 27 is attached to the coordinate input section 33. At this time, system information regarding coordinate setting and game software are read from the ROM cassette 40, and a game mode is set.

Here, when the magnetic pen 34 is moved from the origin in any direction on the XY coordinate axes, the coordinate signals of the pressed position are output from the resistance sheets 30 and 31, and the external
Characters on the screen displayed on the CRT display device 37 can be moved along the moving direction of the magnetic pen 34. Furthermore, when a desired pseudo operation key 27d on the menu input sheet 27 is pressed with the magnetic pen 34, the coordinate signal of the specified position is output from the resistance sheets 30, 31, and the screen can be reset, the character operated, and various other operations can be performed. can be done.

Note that when the magnetic pen 34 is released from the menu input sheet, the coordinates automatically return to the origin, but the characters on the screen remain stationary at that position and do not move.

Next, when erasing characters and figures on the magnetic drawing board display section 24, the magnetic powder 26 is moved into the small chamber 25 by moving the erasing lever 38 along the space 39 at the bottom of the drawing board main body 21a in the direction of the arrow shown in the figure. The drawing is sucked downward and the figure is erased. Also, when erasing all the displayed figures on the external CRT display device 37,
It can be erased by operating the reset button on the operation unit 32. If you want to erase a part of the figure for correction, press the color designation button for the background color, for example white, on the external CRT display device 37 and use the magnetic pen 34. If you trace the corrected part with , it will be partially erased.

Furthermore, if you wish to temporarily store the drawn figure, you can do so by operating the memory button on the operation unit 32, and if you wish to recall the memorized figure, by operating the memory recall button. Each objective is achieved.

In addition, the tablet can be attached and detached from a conventionally known magnetic drawing board that has a display section that displays characters, figures, etc. by attracting magnetic powder filled with viscous fluid into a number of small chambers formed in a honeycomb shape using a magnetic pen. However, when the tablet is not attached to the magnetic drawing board, it may be controlled by an attached device.

(Effects) As described above, according to the magnetic drawing board of the present invention, characters can be written based on the coordinate input sheet provided integrally with the magnetic drawing board display section and the position coordinate signal inputted from this coordinate input sheet using a magnetic pen. or graphics etc. on an external CRT display device, or
Since it is constructed so that the image of the ROM cassette displayed on the CRT display device can be operated, the device of the present invention can be widely used from the viewpoint of education and entertainment, as a drawing device and as an operating device for running games.

Therefore, it is expandable in terms of use and can be expected to have significant effects.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a cross-sectional view of a magnetic screen, and Figure 2 showing a circuit for extracting coordinate signals from the magnetic screen and displaying them on an external CRT display. FIG. 3 is a schematic block diagram, FIG. 3 is a perspective view of the external appearance of a magnetic drawing board, FIG. 4 is a view showing a menu input sheet, and FIG. 5 is a sectional view of a conventional magnetic drawing board. Code 21... Magnetic drawing board, 24... Magnetic drawing board display section, 25... Small chamber, 26... Magnetic powder, 27... Menu input sheet, 30, 31... Resistance sheet,
36...control unit, 40...ROM cassette.

Claims (1)

[Scope of utility model registration request] A magnetic screen display unit that displays characters, figures, etc. by attracting magnetic powder filled with viscous fluid into a large number of small chambers formed in a honeycomb shape using a magnetic pen, and a magnetic screen that can be detachably attached to the top surface of the magnetic screen display unit. A transparent coordinate input sheet is provided, which seals a small chamber filled with the viscous fluid and magnetic powder, detects the pressed position of the magnetic pen, and outputs a coordinate signal, and controls the coordinate signal to generate the characters and figures. A control unit that displays information such as on an external CRT display device, and a control unit that stores image information and is detachably attached to the drawing board body.
1. A magnetic drawing board comprising: a ROM cassette; and an image read from the ROM cassette and displayed on the external CRT display device is moved by movement of the magnetic pen on the coordinate input section.