JPS59100947A - Graphic display device - Google Patents

Abstract

PURPOSE:To attain simply a graphic display by means of human fingers, a light pen, etc. with high operability by displaying the static electricity or a signal of induced hum, etc. applied through a matrix by a microprocessor on a liquid crystal device. CONSTITUTION:When the surface of a matrix 2 is traced with a light pen P, the static electricity is applied to signal lines 2a and 2b. Then the signals are supplied to wave detectors 4 and 7 through multiplexers 3 and 6. Furthermore the detected signals are supplied to registers 10a and 10b through latch circuits 5 and 8. A controller 10c reads the signals supplied from registers 10a and 10b and stops temporarily the address outputs of X and Y directions. The position traced by the pen P on the matrix 2 is calculated based on the addresses of X and Y directions and stored in a memory 10d, and the multiplexers 3 and 6 are swept by the address outputs of X and Y directions supplied from the controller 10c. The position information on the matrix 2 traced by the pen P and stored in the memory 10d is successively delivered to a driver 11a for liquid crystal.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a graphic display device that displays graphics.

Conventional devices of this type generally consist of a CRT (cathode ray tube) and a light pen.Based on the light received at the tip of the pen, a sensitive and high-speed photomultiplier is used to detect the CRT. The position is determined by detecting the scanning spot and matching the timing with the horizontal and vertical deflection. For this reason, it is necessary to connect the light pen and the main body with a lead wire or optical fiber cable, and this cable gets in the way and is cumbersome to operate, and the use of a cathode ray tube increases the size of the device. There was a problem with Naruna.

The present invention has been made in view of the above circumstances, and its object is to provide a graph ink display device that is easy to operate and allows graphs to be drawn easily with a human finger or a light pen.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a graph ink display device of the present invention. Reference numeral 2 in the figure indicates a 7 trisox, which is constructed by arranging a plurality of signal lines in the horizontal direction (X direction) and vertical direction (Y direction) for sensing static electricity, induced hum, etc. Position detection bag 9 for determining the position where a signal is applied to this matrix 2
1 is configured as follows.

A multiplexer 3 is connected to the signal line 2a in the X direction of the matrix 2, and a multiplexer 6 is connected to the signal line 2b in the Y direction. multiplexer 3
is for selecting one of the signal lines 2a in the X direction, and the output section of the multiplexer 3 is sequentially switched (swept) in accordance with the X direction address from the microprocessor 10.

Further, the multiplexer 6 selects one of the signal lines 2b in the Y direction, and the output section of the multiplexer 6 is sequentially switched in accordance with the Y direction address from the microprocessor 10.

The multiplexer 3 includes a detector 4 that detects a signal (static electricity, induced hum, etc.) applied to the signal line 2a in the X direction.
and latch circuit 5 are connected.

The multiplexer 6 also includes a signal line 2b in the Y direction.
A detector 7 and a launch circuit 8 are connected to detect a signal applied to the detector 7 .

As shown in FIG. 2, the microprocessor 10 includes a register 10a that temporarily stores signals from the latch circuits 5 and 8;
1Ob and a control device (CPU) 10c with arithmetic functions.
, a storage device 10d, an instruction R'0M10+3, and input/output ('l10) 10f and 10g.

FIG. 3 is a flowchart showing the operation of this microprocessor 10, in which the control device 10C outputs an X-direction address to the multiplexer 3 via the input/output 10f, sweeps the multiplexer 3, and then passes the address to the multiplexer 6 via the input/output 10g. The Y-direction address is output to the multiplexer 6 and the multiplexer 6 is swept. And registers lQa, l
The outputs of the launch circuits 5 and 8 are input from ob to the control device 10C to detect the presence or absence of launch signals in the X and Y directions.
When the direction latch signal is detected, the signal application position to the matrix node 2 is calculated based on the X and Y direction addresses at this time. This calculation result is stored in the device 10d. Next, the stored contents from this storage device 10d are outputted to the liquid crystal driver 11a of the liquid crystal display device 11 via the output end 10h, and the liquid crystal driver 11
When the drive signal (address signal) is sent from 2 to the display liquid crystal 11b, the X-direction address is output from the control device 10C to the multiplexer 3 again.

The aforementioned multi-IJ circuit 2 is provided on the display surface side of the display liquid crystal 11b, and when a signal is applied to the matrix 2, the position at which this signal is applied is displayed.

Note that P in FIG. 1 is a light pen that applies static electricity or other alternating current signals to the matrix 2.

Next, the operation of the above embodiment will be explained.

When you trace the surface of matrix 2 with light pen P, static electricity (
or other alternating current signals) are applied to the signal lines 2a, 2b. At this time, the multiplexers 3 and 6 are connected to the control device 1.
It is swept by the X and Y direction address output from 0c. When the output parts of the multiplexers 3 and 6 come to the position corresponding to the point where the signal is applied by the light pen 1), the signal passes through the multiplexers 3 and 6 and is manually input to the detectors 6 and 7. , the detection signals from the wave detectors 6 and 7 pass through the launch circuits 5 and 8 to the registers 10a and 10b.
is input. The control device 10C has registers 10a, 10
A signal is read from b and the output of the X and Y direction addresses is temporarily stopped. Then, based on the x and Y direction addresses at this time, the position on the matrix 2 where the light pen P is traced is calculated and stored in the storage device 10d. Then, the multiplexers 3 and 6 are swept again by the X and Y direction address outputs from the control device 10c, and the above-described operation is repeated. As a result, the storage device 10C
, the positions on the matrix 2 traced by the light pen P are sequentially stored.

On the other hand, the memory contents, that is, the position information on the matrix 2 traced by the light pen P, are sequentially output from the storage device 10d to the liquid crystal driver 113, so that the trajectory of the light pen 1) is displayed on the display liquid crystal 11b. will be displayed. Note that at this time, the controlled device can be controlled using the position information as a control signal. The storage device 10d is cleared when writing a new graph or the like or when changing the graph.

According to the above embodiment, the light pen P applies signals such as static electricity to the matrix 2, and the position of this application is determined by the microprocessor Il-10 and displayed on the display liquid crystal Ilb. Unlike those that judge the position by matching the CRT scanning spot based on the light received at the tip of the Light Ben P, the Light Ben P and display LCD 1
There is no need to connect 1b with a cable.

Furthermore, since the display liquid crystal 11b is used, there is no need to take up the depth unlike a cathode ray tube.

In addition, in the above embodiment, a case was shown in which static electricity and other alternating current signals were applied to the matrix 2 by the Light Vent P. However, it is also possible to generate induced hum with a human finger and apply it to the matrix 2 instead of the Light Vent P. good.

Further, although the display liquid crystal 11b is used, a planar display or a map display may be used instead, or a display made of light emitting components such as an LED array may be used.

Furthermore, if the X-direction address is made to correspond to the frequency, and the Y-direction address is made to correspond to the level, and a frequency characteristic diagram is drawn by Wright Ben P, and the position information of the storage device 10d at this time is used as the control signal, the level of the graphic equalizer is , frequency characteristics, etc. can be controlled in accordance with the frequency characteristics.

Furthermore, if the X-direction address corresponds to time and the Y-direction address corresponds to temperature, and a temperature characteristic diagram is drawn using Light Ben P, it is possible to similarly control a heating furnace, etc. according to this temperature characteristic diagram. .

As explained above, according to the present invention, there is provided a mesh-like matrix in which a plurality of signal lines for sensing static electricity, induced hum, etc. are arranged horizontally and vertically, and a mesoche-like matrix in which signals such as static electricity, induced hum, etc. are arranged. Position detection device (detector, latch circuit, microprocessor) to determine the applied position
a storage device that stores the position information obtained by the position detection device; and a liquid crystal, light emitting diode, plasma display, etc. that sequentially inputs the position information from the storage device and displays the trajectory of the signal application position to the matrix. Since it consists of a display device, graphs can be easily drawn using a human finger or a simple light pen, etc., and there is no need to connect the light pen to the display device with a cable, and it can be configured to be thin.

In addition to being able to draw graphs, it is also possible to control the controlled device to the state drawn in the graph by using the position information of the storage device as a control signal.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a block diagram, FIG. 2 is a block diagram of a microprocessor, and FIG. 3 is a block diagram of a microprocessor.
The figure is a flowchart explaining the operation of the microprocessor. 1...Position detection device, 2...7 Trinox, 3.6...Multiplexer, 4,7...
...Detector, 5.8...Launch circuit, 10
...Microprocessor, 1 (ld...
-Storage device, 11.Old--Display device (liquid crystal display device). Patent applicant Pioneer Corporation Figure 1 Figure 11 Figure 2 Figure 3

Claims (1)

[Claims] A mesonue-shaped 71-linox in which multiple signal lines for sensing static electricity, induced hum, etc. are arranged horizontally and vertically, and a position detection device for determining the position where a signal such as static electricity, induced hum, etc. is applied to the matrix. , a storage device that stores the position information obtained by the position detection device, and a liquid crystal, light emitting diode, plasma display, etc. that sequentially inputs the position information from the storage device and displays the trajectory of the signal application position to the matrix. A graph ink display device comprising a display device.