JPS60128525A - Coordinate specification method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (11) Field of the Invention The present invention relates to a coordinate designation method for designating an arbitrary point on a display device, and in particular, the invention relates to a coordinate designation method for designating an arbitrary point on a display device, and in particular, the invention relates to a coordinate designation method for designating an arbitrary point on a display device, and in particular, the invention relates to a coordinate designation system for designating arbitrary points on a display device, and in particular, the invention relates to a coordinate designation method for designating arbitrary points on a display device, and in particular, the invention relates to a coordinate designation method for designating arbitrary points on a display device. Designation method (2) Background of technology With the development of computers, it is becoming more common to use computers such as CAD and computer graphics to draw figures and pictures on display devices (hereinafter referred to as displays). requires a coordinate specifying device that can specify any point on the display.

(3) Prior art and problems Figure 1 is an equipment configuration diagram of a general system that specifies any point on a display using a coordinate designation device, and in the figure, 1 is the coordinate designation device (pointing device). , 2 indicates a coordinate specifying device control section, 3 indicates a calculator, 4 indicates a display control section, and 5 indicates a display device.

FIG. 2 is a conventional configuration diagram of a coordinate specifying device control section, in which 201 is a coordinate specifying device control section, 6 is a position detection section, 7 is an X coordinate register destination, and 8 is a Y coordinate register destination.

The configuration of a general system for specifying an arbitrary point on a display using a coordinate specifying device is as shown in FIG.
It is converted into an X coordinate value and a Y coordinate value and input into the calculator 3. The calculator processes the value and sends a signal to the display control. The display control device uses signals from the computer to send signals to the display to display figures, etc. on the display, and the display does not display figures, etc. due to the signals.

Conventionally, as shown in FIG. 2, a coordinate designation device control section detects a position in the coordinate designation device based on a signal from the coordinate designation device 1, and outputs an X coordinate value and a Y coordinate value.

It is composed of a position detecting section 6, an X coordinate register 7 and a Y coordinate register 8 for storing its X coordinate value and Y coordinate value.

When specifying an arbitrary point on the display using a coordinate specifying device such as a cube notebook, digitizer, or touch panel,
Conventionally, a coordinate specifying device with the required resolution and area size was required. For example, if the area on the display is 1000x1000 dots, then the area of the coordinate designation device also needs to be 1000x1000 dots, and if the area of the coordinate designation device is 1mx1m, then 11
A resolution of 1 fin is required.

If this conventional method makes the specifiable area thicker (or higher in resolution), there are the following drawbacks:

■ If the area that can be specified is increased, the area of the coordinate specifying device must also be increased proportionately, which increases the movement and makes it difficult to specify coordinates.

■ High resolution requires careful attention when specifying coordinates, making the work difficult.

■ High-resolution, large-area coordinate specifying devices are expensive.

(4) Object of the Invention The present invention has an object to eliminate the above-mentioned drawbacks and to provide a coordinate designation method that allows coordinate designation of a large area and high resolution using a small area and low resolution coordinate designation device.

(5) Structure of the Invention According to the present invention, the above object is a coordinate designation method using a coordinate designation device having a limited designable area and resolution, in which each coordinate value on the coordinate designation device is multiplied. A means of storing sets of coefficients.

means for changing the coefficients according to an external signal; means for storing a set of reference values corresponding to each of the coordinate values;
means for changing the reference value in accordance with an external signal; and means for multiplying each of the coordinate values by a corresponding coefficient and further adding the reference value corresponding to each of the coordinate values; This can be achieved by providing a coordinate designation method characterized in that each designated coordinate value is a calculated value for each.

(6) Embodiment of the invention FIG. 3 is a diagram showing coordinate designation in the embodiment of the present invention, where 9 is a designated area of the coordinate designation device, 10 is the entire designable area (hereinafter referred to as the total area), and 11 12 indicates an area that can be specified by the coordinate specifying device (hereinafter referred to as a select area), and 12 indicates the origin (reference point) of the select area on the entire area.

FIG. 4 shows a coordinate specifying device control unit using a coordinate specifying method according to an embodiment of the present invention. In the figure, 6 is a position detection unit, and 7 is an X
A coordinate register, 8 a Y coordinate register, 13 a numerical value converter, 14 a gate, 15 a counter, 16 a data register storage section, 17 a data register, 18 a select button, and 19 a fixed button, respectively.

FIG. 5 is a configuration diagram regarding the X coordinate of the numerical conversion section, and 1
Reference numeral 3 indicates a numerical conversion unit, 20 a multiplier, 21 an adder, 22 a launch circuit, and 23 an X-coordinate buffer.

In the embodiment of the present invention, the numerical values from the position detection section are appropriately converted into X coordinate values and Y coordinate values. For example, Fig. 3(a)
The specified area 9 of the coordinate specifying device is (total area 1 of bl) as shown in
The coordinate (hereinafter referred to as area coordinate) value ax of the origin 12 corresponds to the select area 11 in 0.

Due to the specified position (p
It is converted as 卜ax y=dy*p y+a y. By appropriately changing dx, dy, ax, and ay, it is possible to specify the coordinates of a high-resolution large area using the low-resolution small area coordinate specifying device.

- A coordinate specifying device control unit having this function is shown in FIG. In the figure, the position detection section, the X coordinate register, and the X coordinate register have the same general configuration.

Further, although the configuration of the numerical conversion section 13 regarding the X coordinate is shown in FIG. 5, the configuration regarding the Y coordinate is also similar.

In FIG. 4, a signal S from the select button 18 and a signal f from the fixed button 19 are input to the numerical value converter 13 and the gate 14.

Then, when the fixed button 19 is not pressed, the gate 14 passes the signal S of the select button 18 to the counter 15.
send to The counter 15 increases in value by +1 each time a signal is received from the gate 14, and is reset to 1 when the value reaches m. The data register storage section 16 outputs the data register value (binary values for the X' coordinate and the Y coordinate) indicated by the numerical value of the counter 15 among the -m data registers 17 to the numerical value conversion section 13 . The data register 17 stores coefficients.

In the numerical conversion unit 13, for example, when converting the X coordinate value,
The multiplier 20 applies the data register 17 to the X coordinate value px of the point designated on the coordinate designation device 1 from the position detection unit 6.
The X-coordinate value ax of the area coordinates latched in the launch circuit 22 is multiplied by the X-direction coefficient dx from input. The X coordinate buffer 23 transfers the stored X coordinate value to the X coordinate register and launch circuit 2.
Output to 2. The launch circuit 22 latches the value of the X coordinate buffer at that time every time the select button 18 or the fixed button is pressed. Further, the latch circuit 22 is reset to 0 when the multiplier 20 or the adder 21 overflows. The same applies when converting the Y coordinate.

With the above configuration, the select button 18 and the fixed button 1
The effect of 9 is as follows.

(B) Select button When the select button is pressed, the next data register is selected, the number of dots on the entire area corresponding to one step on the coordinate specifying device, that is, the resolution changes, and the x and y at that time are new. Area coordinates.

(b) The selection of the fixed button data register remains the same (no counter input is made by gate 14), and only the origin of the selection area is updated.

You can also use the select button or fixed button (X).

If y) protrudes from the entire area, it is detected by an overflow of the arithmetic unit (multiplier and adder), and the origin of the selection area is reset to (0, O). Of course, other processing is possible, but it is not essential.

(7) Effects of the Invention As described above, according to the present invention, the position and resolution of the area that can be specified by the coordinate specifying device can be changed as appropriate.

[Brief explanation of the drawing]

FIG. 1 is a general configuration diagram of a coordinate designation system to which the present invention is applied, FIG. 2 is a conventional configuration diagram of the coordinate designation device control section shown in FIG. 1, and FIG. 3 is a coordinate designation diagram in an embodiment of the present invention. FIG. 4 is a block diagram of a coordinate specifying device control section according to an embodiment of the present invention, and FIG. 5 is a block diagram of a numerical value conversion section shown in FIG. 4.

Claims (1)

[Claims] A coordinate designation method using a coordinate designation device having a limited designable area and resolution, the method comprising means for storing a set of coefficients by which each coordinate value on the coordinate designation device is multiplied, and the coefficients are determined by an external signal. means for changing the reference values, means for storing a set of reference values corresponding to each of the coordinate values, means for changing the reference values based on an external signal, multiplying each of the coordinate values by the coefficient for each, 1. A coordinate designation method, comprising means for adding a reference value for each of the coordinate values, and a calculated value for each of the coordinate values is used as each coordinate value to be designated.