JPH0195319A - Graphic display - Google Patents

Abstract

PURPOSE:To depict characters written by a Japanese writing brush, etc., in a natural form by using a pressure sensor to detect gripping hand pressure. CONSTITUTION:A position detector 1 detects the moving extent of a coordinate input part 8 and at the same time a pressure sensor 5 detects the gripping hand pressure at that point. A detecting signal received from the sensor 5 is applied to an input port 9 via an amplifier 6 and an A/D converter 7 in response to the coordinate position inputted via the detector 1. Input information is held by a main memory part 11 under the control of a CPU 10 and at the same time displayed on a CRT 13 by a cursor via a CRT control part 12. Thus the character thickness is changed with change of the gripping hand pressure. Therefore, the change of the character line thickness due to the change of writing pressure can be shown in case a Japanese writing brush is used.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a graphic display for depicting figures and the like on an electronic computer.

[Prior Art] A conventional device of this type is shown in FIG. FIG. 5 is a block diagram showing the configuration of a conventional graphic display, in which (1> is a position detector,
2) is an X-axis pulse shaper, (3) is a Y-axis pulse shaper, (4) is a switch, and (8) is the entire coordinate input section (so-called pointing device). (9)
is the coordinate input board, (10) is the CPU, (11) is the main memory, (12) is the CRT control unit, (13) is the CRT, (
14) shows the entire display control section. Also position detector (1)
is for optically detecting the moving position of the coordinate input section (8), and has a built-in light emitting diode and a photodiode.

Next, the operation of the apparatus shown in FIG. 5 will be explained. A graphic display that depicts a figure on an electronic computer displays the figure with the cursor on the CRT (13) by moving the coordinate input section (8) along the shape of the figure while pointing. It is stored in the storage unit (11).

In the case of a graphic display using an optical position detector (1) as shown in FIG. By moving (8), the grids passing through the coordinate input section (8) are detected by light one by one, and this is converted into an electrical signal to calculate the distance traveled and input into a computer. ing. Therefore, the operator can switch (
4) to perform pointing, and move the coordinate input section (8) along the shape of the figure you want to draw on the board with the grid-like pattern drawn, to generate the X-axis direction pulse. The shaper (2) counts the amount of movement in the X-axis direction, and the Y-axis direction pulse shaper (3) counts the amount of movement in the Y-axis direction as an increase or decrease in pulses, and sends them as a signal to the coordinate input port (9). It is read by the CPU (10).

[Problems to be Solved by the Invention] Since the conventional graphic display as described above is configured as described above, for example, when trying to depict characters as figures, it is difficult to For example, even if you try to draw calligraphy characters, you cannot express changes in the thickness of the character line due to pen pressure, so it lacks adaptability as a human-machine interface. There was a problem.

This invention was made in order to solve this problem. For example, when drawing calligraphy characters, it is possible to express changes in character lines such as changes in character lines due to changes in pen pressure, and to draw in a more natural form. The purpose is to obtain a graphic display that can perform.

[Means for Solving the Problems] The graphic display according to the present invention allows the grip force of the hand to be input as information to the pointing device in addition to the conventional functions.

[Operation] In this invention, changes in the thickness of character lines can be expressed by changing the grip strength of the gripping hand. Changes, etc. can also be depicted.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a graphic display according to the present invention, in which the same reference numerals as in FIG. 5 indicate the same or corresponding parts, (5) a pressure sensor;
6) is an amplifier, and (7) is an A/D converter.

Next, the operation of this invention will be explained. Switch (4
), the coordinate input unit (8), which is a pointing device, is driven as in the conventional case and starts pointing. As in the conventional case, the position detector (1) detects the amount of movement of the coordinate input section (8), and at the same time, in this invention, the pressure sensor (5) detects the grip force of the hand at each point. , the detection signal from this pressure sensor (5) is amplified by an amplifier (6), and the A/D converter (7)
The analog data is converted into digital data and input from the coordinate input port (9) in correspondence with the coordinate position input by the position detector (1). The input information is held in the main storage unit (11) under the control of the CPU (10) as in the past, while the CRT control unit (1
2), the cursor is displayed on the CRT (13>).

Therefore, in this invention, by changing the grip strength of the gripping hand, it is possible to freely change the thickness of the drawn line, such as changing the thickness of the character line depending on the writing pressure.

FIG. 2 is a flowchart showing the above operation. In step 1, the switch (4) is turned on to start pointing, and in the next step 2, the value of the pressure sensor (5) at that point is determined. is input, and the thickness of the line to be drawn at that point is selected in step 3 according to this value. In step 4, input the X-coordinate value and Y-coordinate value from the X-axis pulse shaper (2) and Y-axis pulse shaper (3), and if it has moved from the previous position in step 5, then in step 6 CPU (10
) and draw a line for the amount of movement with the cursor on the CRT (13).By repeating this operation until the switch (4) is turned off, you can, for example, draw calligraphy characters with a line that corresponds to the pressure of the pen. It becomes possible to draw.

FIG. 3 is a diagram showing an example of a data table format for storing input data in the main memory section (11). This data is created when drawing, and the X coordinate value of this data table, By multiplying the Y coordinate value by a coefficient value for enlarging or reducing it, it is possible to display figures with different magnifications. Therefore, CR in Figure 4
T (13> As shown in the calligraphy letter "A" drawn above, input the calligraphy characters while enlarging them on the CRT (13) and reducing them to create a more natural depiction. can be done.

Note that although the above embodiment uses a CRT as a display device, the display device is not limited to this and may be a plotter device or a printer device, and the same effects as in the above embodiments can be obtained.

[Effects of the Invention] As explained above, the present invention is equipped with a pressure sensor to detect the grip force of the gripping hand, so that the thickness of the drawn line can be changed by changing the grip force, and the thickness of the drawn line can be changed. Since it is possible to enlarge or reduce the drawn figures, it is possible to depict calligraphy characters in a more natural form, which has the effect of making it a better man-machine interface.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a graphic display according to the present invention, FIG. 2 is a flowchart showing the operation of the device shown in FIG. 1, FIG. 3 is a diagram showing an example of a data table, and FIG. FIG. 5 is a diagram illustrating the configuration of a conventional graphic display. (1) is a position detector, (2) is an X-axis direction pulse shaper,
(3) is a Y-axis direction pulse shaper, (4) is a switch, (
5) is a pressure sensor, (6) is an amplifier, (7) is an A/D converter, (8) is a coordinate input section, (9) is a coordinate input board,
(10) is CPU, (11) is main memory, (12) is C
An RT control section, (13) a CRT, and (14) a display control section. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] A graphic having a coordinate input section having a function as a pointing device that causes a computer to read a figure using drawn lines, and a display control section that displays and stores the figure read by the coordinate input section. - In the display, a grip force detection mechanism consisting of a pressure sensor, an amplifier, and an A/D converter is provided in the coordinate input section, and the thickness of the drawn line is changed by changing the grip force of the hand gripping the coordinate input section. A graphic display characterized in that it is read by an electronic computer and displayed by a display control unit.