JPS63129468A - Graphic display controller - Google Patents

Abstract

PURPOSE:To perform an operation to move a cursor by a long distance and rapidly, and the operation to position the cursor finely with a natural operating sense with resulting superior efficiency and high accuracy, by varying the moving ratio of the cursor on displaying by the travel speed of a pointing device. CONSTITUTION:By moving the pointing device 1 in an arbitrary direction by a distance L at speed V in a state where the cursor is displayed, an arithmetic part 6 updates coordinate data C and C based on travel quantity data LX and LY and travel speed data VX and VY, and as a result, the cursor being displayed moves in a direction corresponding to the travel direction by a distance (l). The ratio (b)=l/L of the travel distance (l) of the cursor on displaying corresponding to the travel distance L of the pointing device varies corresponding to the travel speed V of the pointing device 1. The arithmetic part 6 level- discriminates the travel speed V(VX, VY) to three steps of high, medium, and low, and in a low speed area where it is V<V1, a coefficient (b) is set at the minimum value (b1), and in a medium speed area where it is V1<=V<V2, the coefficient (b) is set at a medium value (b2), and in the high speed area where it is V2<=V, the coefficient (b) is set at a maximum value (b3).

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a drawing control device for changing the display position of a specific image element such as a cursor in a graph ink display device, a character display device, or the like.

As is well known in the art, a pointing device called a mouse is used in various display devices to move a cursor on a display screen. A conventional configuration of this type of cursor drawing control device is shown in FIG.

In FIG. 3, when the pointing device 1 is moved on a desk, a pulse is generated in the outputs Ox and Oy each time the amount of movement in the X-axis direction and the Y-axis direction becomes a minute unit amount. The output pulses of the pointing device 1 are integrated by the movement amount counting section 2, and the movement amount LXI
LY is calculated.

Display coordinate calculation unit 3 according to this movement amount data Lx, LY
updates the display coordinates Cz, Cy of the cursor and provides the coordinate data CX, CY to the cursor drawing section 4. The cursor drawing section 4 draws cursor data at the position indicated by the coordinate data Cx, CY in the display bitmap memory. The cursor is now displayed at the coordinates CXI CY on the display screen.

When the pointing device 1 is moved by a distance in an arbitrary direction while the cursor is displayed, the cursor moves by a distance on the display screen in a direction corresponding to the direction of movement. The ratio a-43/L of the moving distance of the cursor on the display to the moving distance of the pointing device 1 is a constant value set appropriately (see FIG. 4).

Problems to be Solved by the Invention If the above constant a=A/L is set to a large value, the kernel on the display will move significantly by simply moving the pointing device 1 a little. But in this case,
It becomes very difficult to operate the pointing device 1 for finely moving the cursor on the display.

If the constant a is set to a small value, the operation of minutely moving the cursor on the display becomes easier.

However, it becomes cumbersome to move the cursor quickly and widely. Even if you make the most of the limited space on your desk and move the pointing device 1 for a long time, you will not be able to move the cursor to the target position with just one movement operation, and you will have to repeat this movement operation when visiting. After repeating this, you can finally get the cursor to reach the target position. Such troublesome situations occur.

This invention was made in view of the above-mentioned conventional problems, and its purpose is to provide a drawing control device that allows for easy operations to move the cursor minutely, as well as operations to move the cursor large and quickly. Our goal is to provide the following.

Means for Solving the Problems Therefore, the present invention provides an operating means that outputs a signal corresponding to the amount of movement or the speed of movement when the movement is performed (responsive to the pointing device), and an output of this operating means. input processing means for calculating both the amount of movement and the speed of movement based on the amount of movement, means for calculating the display coordinates on the display screen based on both the amount of movement and the movement speed, and the display according to the display coordinates calculated by the calculation means. A display control means is provided for changing the display position of a specific image element (positioned on the cursor) on the screen.

Effect: The calculation means calculates the display coordinates based not only on the amount of movement of the operation means but also on the speed of movement. This point is different from the conventional technology.

Embodiment FIG. 1 shows a schematic configuration of a drawing control device according to an embodiment of the present invention. The pointing device 1 and the movement amount counting section 2 are the same as the conventional ones, and the counting section 2
The moving amounts LX and LY of the pointing device 1 are output from the .

The speed detection unit 5 samples the movement amount data L X I L y output from the counting unit 2 at a constant cycle,
The rate of change in the amount of movement, that is, the movement speeds VX and vY are calculated.

The coordinate calculation section 6 updates the display coordinates CX, CY of the cursor as shown below based on both the movement amount data LX, LY and the movement speed data (1), Vy, and displays the coordinate data in the cursor drawing section 4. Give Cx and CY. The cursor drawing section 4 is the same as the conventional one, and draws cursor data at the position indicated by the coordinate data CX, . . . Cy in the display bitmap memory. Now the coordinates Cx on the display screen
A cursor is displayed at the position of , CY.

When the pointing device 1 is moved in any direction by a distance at a speed V (not necessarily at a constant speed) with the cursor displayed, the calculation unit 6 calculates the movement amount data L
X, LY and movement speed data vX.

As a result of updating the coordinate data Cx and CY based on Vy,
The cursor on the display moves by a distance in a direction corresponding to the above movement direction.

Here, the ratio b=n/L of the moving distance of the cursor on the display to the moving distance of the pointing device 1 is:
It is not a constant value as in the conventional case, but changes depending on the moving speed V of the pointing device 1.

The arithmetic unit 6 discriminates the moving speed v (Vx, Vy) into three levels: dog, medium, and low, and sets the above-mentioned coefficient S to the smallest value in the low speed region of v and Vl, so that ■1≦V≦■ In the medium speed region of V2, the coefficient S is set to b2, which is an intermediate value, and in the high speed region, V2<V, the coefficient S is set to the largest value, b3. The above relationship is shown in the graph of FIG.

As is clear from the above, if the pointing device 1 is moved slowly, the amount of movement of the cursor on the display relative to the amount of movement is relatively small. Therefore, it is very easy to perform fine control of the cursor position. For fine control, use pointing and
Although the movement of the device 1 is naturally slow, the device is well suited to that natural operating feel.

Furthermore, if the pointing device 1 is moved quickly, the cursor movement NJ3 relative to the amount of movement becomes relatively large. Therefore, if you move pointing device 1 quickly, even if the amount of movement is not that large,
The cursor moves a lot. This fits the natural operating feeling of humans when they want to move the cursor quickly and quickly, and eliminates the hassle of repeatedly operating pointing device 1 over and over again to move the cursor to the target point. disappears.

In addition, in the above embodiment, the coefficient S is changed by 3 depending on the moving speed V.
Although the steps are changed, the present invention is not limited to this.
The coefficient S may be configured to change smoothly according to the speed V.

By the way, if the moving speed (2) of the pointing device 1 changes during the movement, the above-mentioned coefficient (S) also changes accordingly. Therefore, by moving the cursor quickly at the beginning and slowing it at the end, large movements of the cursor and final fine positioning can be rationally performed in a series of operations.

Effects of the Invention As explained in detail above, in the drawing control device according to the present invention, the movement ratio of the cursor on the display changes depending on the movement speed of the pointing device, so operations that move the cursor greatly and quickly are also possible. The fine positioning of the cursor can be performed with a very natural feeling, very efficiently, and with high precision.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a drawing control device according to an embodiment of the present invention, FIG. 2 is a graph showing the operating characteristics of the same device, and FIG.
The figure is a schematic configuration diagram of a conventional drawing control device, and FIG. 4 is a graph showing the operating characteristics of the conventional device. 1... Pointing device (operation means), 2.
...Movement amount counting section, 4...Kanle drawing section, 5.
...Speed detection section, 6...Coordinate calculation section Name of agent: Patent attorney Toshio Nakao and one other person Fig. 1 Fig. 2

Claims (1)

[Claims] An operating means that outputs a signal corresponding to the amount of movement or the speed of movement when a movement is performed, an input processing means that receives the output of this operation means and calculates both the amount of movement and the speed of movement, and both the amount of movement and the speed of movement. A drawing control device comprising means for calculating display coordinates on a display screen based on the calculation means, and display control means for changing the display position of a specific image element on the display screen according to the display coordinates determined by the calculation means.