JPS61240287A - Cursor display controller - 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 The present invention relates to a display control device for a moving cursor displayed on a display screen of a display device such as a CRT.

(Prior Art) Controlling a cursor means controlling its position on a display screen and the button to be displayed.

One method for controlling the position is to move the cursor by a predetermined displacement in the direction of the arrow from the current display position when an arrow key on the keyboard is pressed.

In this method, the amount of cursor movement is a discrete value.

Fine cursor movement is not possible because the movement direction depends on the number of types of arrow keys, and it is usually impossible to press two or more keys at the same time.

This is also discrete.

Cursor control on traditional character-based display devices also includes movement by pressing arrow keys.

There was no problem of significantly poor operability. However, when what is displayed includes not only characters but also figures and photographic ink, the conventional method of pressing arrow keys to control the cursor position can only discretely control the direction and distance of movement. Therefore, there is a problem in that the operability becomes extremely low.

Pointing devices such as tablets and mice have been used to solve this problem. A user can generate two-dimensional coordinate values (X and y) by moving these pointing devices on a plane.

The display device uses two-dimensional coordinate values generated by the movement of the pointing device as input data, displays them on a display screen, and uses the data to determine the destination to which the cursor is to be moved.

Next, the original display image is written back to the current cursor display position, the display image at the newly determined cursor display position is saved, and a cursor button is written at that position.

Figure 2 shows an example of a cursor control method using a conventional pointing device. 1 is a mouse, 2 is a tablet, 3 is a cursor bang generator, and 4 is a new cursor bang generator using input data from the pointing device. A cursor position control unit that determines the position to be displayed; 5 is a cursor display control unit that inputs output data from the cursor bang generation unit 3 and the cursor position control unit 4, and writes back the display image for the current cursor position and creates a new one; Saves the display image at the cursor position and writes a cursor button at that position.

When a user moves Mouse 1 or Tablet 2, these pointing devices transmit data (in the case of a mouse) consisting of the displacement distance from the current position and the state of the button associated with Mouse 1 (pressed or not pressed). ΔX,
In the case of a tablet, Δy * P) is data (x+ +yl * P) consisting of two-dimensional coordinate values of the board surface of tablet 2 and button status (pressed or not pressed).
is input to the cursor position control section 4. In this cursor position control unit 4, if the pointing device is a mouse, new coordinates (x, y) are determined using equations (1) and (2).

x=xc+a#ΔX... (1)! ='/c+b・Δy... (2) Here, s Xc
e)'c is the current cursor position on the display screen,
Iy is a new coordinate, ΔX and Δy are displacement data input from the mouse, and a and b are coefficients.

Next, prepare for the primary mouse movement by setting -Xc''Xy)'c=Y.

If the pointing device is a tablet, new coordinates (x, y) are determined by equations (3) and (4).

x=c醗X,... (3) x=d-)'t... (4) Here, -Xlyyl is the data input from the tablet *Qe d is the coefficient.

Next, s　Xc=Xt　Yc=3'.

The cursor display control unit 5 writes and writes back the cursor button according to the new coordinates obtained from equations (1) and (2) or equations (3) and (4).

The method described above allows the cursor to be moved arbitrarily within a two-dimensional coordinate system, and is convenient for window operations on modern multimedia screens.

On the other hand, in a multi-window display system, rectangular areas called windows are usually provided on multiple display screens.

Windows must be able to perform window operations such as moving, enlarging/reducing, overlapping, etc. independently from other windows, as well as scrolling to change the display area within the window.To do this, windows have an operation frame. An area called .

FIG. 3 is a diagram for explaining the operation frames attached to the windows, where 9 is the operation frame, 10 is the window, 211 is the name of the service program using the window, and 1, for example, “
12-1.12-2.12-1 is a startup instruction area for specifying various startup operations for the service program that uses this window, 13゜14.15.1
6 is an area for scrolling the window contents vertically and horizontally,
Reference numeral 17 indicates an enlargement/reduction instruction area for the window including the operation frame, 18 a scroll area, and 19 a scroll bar indicating whether the scroll area 18 is displayed in a vertical (or horizontal) position.

X me )' at yat )' s are the maximum and minimum values in the region 18.

In the second operation frame, startup operation instruction area 12-1゜12-
2.12-3, Scroll instruction areas 13, 14, 15
, 16° or the enlargement/reduction instruction area 17, the only operation required is to move the pointing device, move the cursor to that area, and click the button there.

The scroller 19 is used when the user moves the pointing device to move the cursor to the position of the scroller 19, and then moves the cursor up and down or left and right while holding down the key at that position.

The upper position program is notified of the vertical or horizontal length of the scroll area 18 and the position of the scroller 19 within the scroll area 18 in the vertical or horizontal direction.

That is, the movement of the pointing device in the X direction or only in one direction of the X direction may be notified to the upper position as information.

(Problem to be Solved by the Invention) However, in the configuration of the IK2 diagram, the data value input from the pointing device is x ey ? Since the displacement in the Ij direction is included, the cursor moves along with the scroller 19, but the movement of the mouse (or tablet) is not completely limited to the X direction or the X direction.

Therefore, the cursor touching the scroller 19 may move out of the scroll area 18 depending on how the mouse is moved. If this happens, the data notified to the higher level will no longer indicate the positional relationship between the scroll area 18 and the scrollper 19. Therefore, an incorrect value is notified to the higher-level service program.

In order to solve this problem, it is conceivable to increase the width of the scroll area 18. However, if the operation frame area is made unnecessarily wide, the inside of the window becomes smaller and the number of windows that can be displayed becomes significantly smaller.

Means for Solving the Problems The present invention solves these drawbacks by changing the cursor position to This is determined using a function associated with a specific area.

(Operation) By doing this, the point position of the pointing device is combined with another condition (in this case, the key press condition 7IIil), and while that condition is satisfied, the cursor will move in advance in response to mouse movements. Since it moves within a restricted trajectory according to a predetermined algorithm, curl operations can be performed easily even if the operation frame displayed along with the window is narrowed.

(Embodiment) FIG. 1 is a diagram showing the configuration of an embodiment of the present invention, in which 1 is a mouse, 2 is a tablet, 3 is a cursor bang generator,
4 is a cursor position # control part, 5 is a cursor display control part, 6
．． 61, 62, 63, and 64 are cursor position generation units.

For an explanation of the operation, use mouse 1 as a pointing device.
We will explain the case when using .

When the mouse 1 is moved without pressing any keys, data (ΔX, Δy+P=o) is input to the cursor position generation unit.

P=O means that no key has been pressed, and therefore the user 1 has not performed an operation to specify an area within the window. Therefore, the cursor position generation units 61, 62, 6
3 does not work.

The input data (ΔX, ΔyyP=o) is processed by the cursor position generation unit 64 according to equations (1) and (2) to determine the cursor position.

If data P=1 is input, the cursor position generation units 61, 62, and 63 are activated. In that cursor position generation unit, input data (ΔX.

From ΔyyP:1), use equations (1) and (2) to find a new cursor position on the 5 display screen, and determine if the display position is in a specific area of the display screen and if that area is one of the cursor position generation units. Detect that it belongs to.

When one of the cursor position generation units is selected, that unit generates a new cursor position according to a preset algorithm.

For example, the cursor position generation unit 61 generates a cursor position for moving the cursor only in the horizontal direction. Therefore, the algorithm set in the cursor position generation unit 61 is the formula (5), (6)% formula% where % is a constant.

That is, the cursor position is generated ignoring displacement in the y direction. Therefore, even if the mouse operation is rough, the cursor position only moves left and right within the area 18.

There is no deviation in the vertical direction.

If the user wishes to move the cursor outside the area 18, the operation of the cursor position generation unit is stopped by releasing the mouse key.

The algorithms set in the cursor position generation unit 62 are as shown in equations (7) and (8).

x=f... (7)
'j='! c+b・Δy (ys≦y≦ye)・
... (8) However, -Vae:/* is the maximum of area 18.
is the minimum value.

f is the X coordinate value and is a constant.

That is, the cursor position is generated ignoring displacement in the X direction.

The algorithm set in the cursor position generation unit 63 is Equation (9), (10) or Equation (11),
(12).

If 1Δx1≦1Δy1, y”yc+ b 'Δy (-r/b≦y≦
r/b) -(9) 12-year-old Noah 7; 7 Muff Ding 7 Wa Efu)''/a (-r/a≦X≦r/a)='(10) However, if We≦0, X is negative , If XC>O, then X is a positive value.

If IΔx1〉1Δy1, then X varnish. + a ・Δ x (−
to r≦X≦r/a)...(11) to yF±ζ”
(X, + A x)”/b (-r/b≦y≦r/b)
-(12) However, if yc:50, y is negative.

If yc>O, y is a positive value.

This means that the area around the ellipse is a specific area, and when you click on a part of the ellipse with the cursor (by pressing a key), no matter how roughly you move the mouse cursor, the cursor will never follow the elliptical trajectory until you release the key press. There will be no deviation.

Although four cursor position generation units are used here to simplify the explanation, there may be more.

Furthermore, the algorithm set within the unit is expressed by the formula (5
) to (12) may of course be used.

In addition, as the activation condition for the cursor position generation unit, the key press (P = 1) was used as the trigger for simplicity in the explanation, but
Other conditions 1 For example, it may be two consecutive key presses (double clicks), and other conditions may of course be set for that unit.

As explained above, the present invention combines the point position of the pointing device with another condition (in this case, a key press state), and while the condition is satisfied, the cursor does not move with the mouse. On the other hand, since the robot moves within a limited trajectory according to a predetermined algorithm, there is an advantage that the curl operation can be performed easily even if the operation frame displayed along with the window is narrowed.

For this reason, one aspect of the present invention includes a pointing device, and uses the pointing device to issue various instructions.

It can be applied to a display system having a user interface, and can also be applied as a valuator using a pointing device.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a diagram showing an example of a cursor control method using a conventional pointing device, and FIG. 3 is a diagram for explaining an operation frame attached to a window. This is a diagram. 1...mouse, 2...tablet. 3... Cursor bang generation section, 4... Cursor position control section, 5... Cursor display control section. 6.61, 62, 63.64...Cursor position generation unit. 9...Operation frame, 10...Window, 11...Name of service program. 12-1.12-2.12-3...A startup instruction area for the service program. 13.14, 15.16...Scroll instruction area within the window, 17...Window enlargement/reduction instruction area. 18...Scroll area, 19...Scroll bar, X,, y,...Maximum and minimum values in the horizontally long scroll area 18. yety*... Maximum and minimum values in the vertically long scroll area 18. Patent Applicant: Nippon Telegraph and Telephone Corporation Figure 1, Figure 4

Claims (1)

[Claims] In cursor control of a display device having a pointing device such as a tablet or a mouse that inputs a displacement from a previous position when operated by a user, the cursor position on the display screen of the display and other means for detecting a condition in combination with a predetermined condition; means for generating a cursor position according to a predetermined algorithm upon detection of the condition; and means for writing and displaying a cursor pattern at the cursor position; A cursor display control device comprising: