JPH0792728B2 - Display controller - Google Patents

Description

The present invention relates to a display control device for controlling a display device in which coordinate input means such as a transparent digitizer is combined with display means such as a CRT.

[Prior Art] In the field of data input by graphics by combining data processing by a computer and image processing technology, a machine and a human can work interactively by causing a display change according to a position designated by an operator. The need for a man-machine interface is being screamed.

This type of man-machine interface has a combination of a transparent digitizer or a display device such as a liquid crystal display under a tablet, a combination of a CRT and a light pen, or a transparent touch panel such as a CRT display device. It has been devised as a stack on the front. That is, it should be called a coordinate input / display device in which the coordinate input device and the display device are integrated. In such a device, when each item of the menu list is displayed on the screen in several areas and the item in the area including the position pressed by the pen tip or the fingertip is selected, Is sufficiently wide so that even if the input coordinate value of the pen tip or finger tip deviates slightly from the target position, no serious problem occurs.

However, for example, CAD (CONPUTER AIDE
There are various problems in the field such as D DESIGN) where precision of figure creation is required. Fig. 2 shows an example of CRT display when designing printed wiring by CAD. On the CRT screen, as shown in the figure, printed wiring lines are densely packed in the lateral direction. Now, assume that the cursor is at the point A on the upper left of the screen. There are two methods for moving the cursor from the point A to the point B in the wiring dense area. The first method is to reach the point B while moving the cursor by sewing between the printed wirings as shown by the locus C. This can be easily understood by assuming that a new printed wiring is drawn on the locus C. Then, the second method is a method of reaching the point B in a substantially shortest distance like the trajectory D.

[Problems to be Solved by the Invention] If the above two methods are analyzed and examined, the coordinate input /
It can be seen that the display device requires the following viewpoints. That is, it is structured so that the direction in which the cursor should be moved and the distance in which the cursor should be moved can be grasped .: From the viewpoint of inputting coordinates, the problem is to indicate the target position quickly and accurately. . This requires that the cursor be quickly moved from the current cursor position to the target position, and that the position can be accurately indicated when the cursor is near the target position. In other words, you can specify the target point more accurately,
For that purpose, the operator of the apparatus is configured to easily recognize the position of the target point. It is also important not to lose track of the direction to the target and the distance to the target. However, from this point of view, with a conventional coordinate input pointing tool, a stylus pen, fingertip, or the like hides the figure displayed at the tip of the stylus, and it is difficult to accurately point the target position. In particular, when the resolution of the coordinate input device is smaller than the resolution of the display means such as a CRT such as a touch panel, it is not possible to accurately indicate an arbitrary minute section displayed on the CRT or the like, for example, one dot. In addition, even if you intend to indicate the dot displayed between a grid point and the grid point next to it on the touch panel, etc., in some cases, the point displayed directly below the wrong grid point. Will end up instructing you.

: Is a problem of the conventional technology from the viewpoint of how to reach a certain target point. However, as can be seen from the example of the trajectory C in FIG. 2, when reaching a certain target point, the route to reach that target point becomes a problem at the same time. That is, in the example of the locus C, what should be done to reach the target point B while avoiding the printed wiring already displayed. From the viewpoint of keeping the cursor position at a predetermined distance from the existing image, in other words, there is a problem that the point designated by the operator is displayed as a locus in one dimension. Regarding this point as well, the conventional technique is not sufficient because only the point directly below the grid point of the coordinates that can be input by the touch panel or the like can be accurately indicated, that is, displayed.

: In order to reach the target point more accurately, or to reach the target point while drawing a desired trajectory, the input instruction speed of the operator and the moving speed of the cursor (or the display drawing speed at which the trajectory is drawn) are For example, when the target point is far, it is desirable that the drawing speed of the locus can be made faster than the input instruction speed, and when the target point is near, the former speed can be made slower than the latter speed.

: Not just as a display device or coordinate input device,
The man-machine interface that considers the above points is desired.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to move and display a figure to be moved (for example, a cursor figure) by using coordinate input means such as a touch panel. The present invention proposes a display control device capable of accurately moving and displaying a desired moving speed.

[Means for Solving the Problems] In order to achieve the above object, the display control device of the present invention separates a moving target graphic and a predetermined distance in the vicinity of the graphic on the display screen of the display means. Display control means for displaying an area of a predetermined size, coordinate input means having a coordinate input surface arranged so as to overlap the display screen, and detecting a position designated by the coordinate input means. When it is detected that the position of the coordinate input surface of the coordinate input unit corresponding to the detection unit and the area is designated and the designated position is moved, the figure is moved according to the movement. And a movement control means for changing the movement distance of the graphic according to a difference in movement speed of the designated position.

[Operation] In the display control device having the above configuration, the display control means displays a predetermined area in the vicinity of the figure to be moved. When the coordinate input means having the coordinate input surface arranged so as to overlap the display screen detects the position designated by the operator, the movement control means moves the designated position, and in response to the movement. The figure is moved. That is, the figure to be moved can be moved without giving a direct instruction to the figure to be moved. further,
The movement control means changes the moving distance of the graphic according to the difference in the moving speed of the designated position. Therefore, the moving speed of the graphic to be moved can be set according to the moving speed of the designated area. it can.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

As a preferred embodiment of the present invention, for example, in the coordinate input device of the embodiment shown in FIG. 1, a display surface of a CRT display 2 which is a display means and a transparent tablet 1 which is a coordinate input means are overlapped with each other, and The display coordinates and the input coordinates are overlapped so as to have a predetermined correspondence. On these overlapping surfaces, a cursor movement instruction area 500 for inputting an instruction to move the cursor 400 and cursor coordinates for instructing that the coordinates at the display position of the cursor 400 should be input as desired coordinates. Each of the input instruction areas 501 is set to have an area in which the display surface of the CRT display 2 and the input surface of the touch panel 1 overlap.

Further, the coordinate input device is provided with cursor moving means 402 and coordinate displacement detecting means 401.

Under the above configuration, when inputting the coordinates of a point on the coordinate input surface, place a finger or the like on the cursor movement instruction area 500 and move the finger in the direction of the target point to detect coordinate displacement. The means 401 detects a coordinate displacement such as a moving direction, a distance and a speed of the finger, and the cursor moving means 402 moves the cursor 400 based on the moving direction, the distance and the speed. When the cursor moving means 402 moves the cursor 400, for example, when the displacement speed is higher than a predetermined speed, the moving distance of the finger is 1
If the displacement speed is smaller than a predetermined speed, a distance less than twice the moving distance of the finger is moved to the cursor 400. In this way, the movement of the cursor 400 can be controlled by the operator's input to the movement instruction area 500 with a finger, and the movement speed of the cursor 400 can be changed depending on whether the cursor 400 is far from the target point to be moved. Since it can be changed, the operability is good, and a desired target can be moved quickly and accurately. Since the cursor 400 and the cursor movement instruction area 500 are apart from each other, the cursor 400 is not hidden by the finger, and thus the cursor 400 can accurately reach the target point. When the cursor 400 accurately reaches the target point, the cursor coordinate input instruction area 501 is pressed with a finger to input the position coordinate of the cursor 400 as the coordinate of the target point.

Hereinafter, further preferred embodiments of the present invention will be described in detail.

<Block Configuration of Embodiment> FIG. 3A is a block configuration diagram of the coordinate input device with a display function of the embodiment. A touch panel 1 is attached to the screen of the CRT display 2 so as to cover the screen. CRT
The controller 3 takes out the image data created by executing the program of the CPU 4 from the image memory 5 and displays it on the CRT display 2. The program and data of the CPU 4 are stored in the memory 6. The position touched by a finger or the like on the surface of the touch panel 1 is detected by the touch panel control circuit 7. This is read by the CPU 4 as coordinate values. The CPU 4 accesses these data via the bus 8. The keyboard 9 is for inputting operations required for image display and coordinate input. For example, "mode" key 80,
The "input" key 81 and the like. How to use these keys will be described later.

FIG. 3 (b) shows an example of the CRT screen. The number of pixels on this screen is, for example, 640 dots horizontally and 400 dots vertically. The coordinates of the pixel at the upper left corner are (0,0), the upper right corner is (0,633), the lower left corner is (399,0), and the lower right corner is (399,633). Generally, when the data corresponding to the pixels thus coordinated is stored in the image memory 5, 8 pixels in the horizontal direction are made to correspond to one unit of memory position, that is, 1 byte, and are sequentially stored in the horizontal direction. A method is generally used in which the next one dot line for one dot line is sequentially stored and the data for one screen is stored as a raster image. In this way, the contents of the image memory 5 can be handled by the CPU 4 in the same manner as the normal memory 6. Under the above environment, a point is formed at an arbitrary position on the screen of CRT display 2. Draw a line from any position to any position. Besides drawing programs such as drawing a circle around an arbitrary position, the bit pattern data of an arbitrary rectangular area on the screen is transferred to the memory 6 in a specific format, and vice versa. There is a drawing program that outputs to an arbitrary position. This is realized by the CPU 4 rewriting the contents of the image memory 5 or transferring data with the memory 6. When the content of the image memory 5 is rewritten, when the rewriting source data is S and the pixel data of the image memory is D in bit units corresponding to respective pixel data, D =
For example, a method of using the result of the logical operation α of α · S as new data in the image memory can be used. For example, screen reversal can be realized by setting α to exclusive OR and S to “1”.

The above is an example of performing graphic processing as a program of the CPU 4, but there are some CRT controllers 3 having these functions. In this case, the CPU 4 only has to issue a drawing command to the CRT controller 3.

On the other hand, if you touch any point on the screen with your finger etc., touch panel 1 is placed on the screen.
Can be read from the touch panel control circuit 7.
The touch panel control circuit 7 may pass the X-direction coordinate and the Y-direction coordinate of the pressed position to the CPU 4 as a numeric code or as a binary value. In any case, the coordinates of the touch panel 1, the coordinates on the CRT display 2, and the coordinates in the image memory 5 uniquely correspond to each other, so that the touch panel 1 on the touch panel 1 is pressed while observing the CRT screen. It suffices that the coordinate (x, y) of the image memory 5 can be calculated from the input coordinate value.

<Graphic Cursor> FIG. 4 shows an example of the principle of the graphic cursor used in the embodiment. The display surface of the CRT display 2 is provided with three display areas, that is, a cursor 10 in which four L-shaped figures are combined, a cursor movement instruction display area 11 and a coordinate input instruction display area 12. Further, on the coordinate input surface of the touch panel 1, a cursor movement instruction input area 14 corresponding to the cursor movement instruction display area 11 and a coordinate input instruction display area 12 are provided.
The coordinate input instruction input area 13 corresponding to the two areas is provided. In order to move the central portion P of the cursor 10 to a desired display position, the operator moves the cursor movement instruction display area 11
While visually recognizing, the moving direction and the moving distance are given in the cursor movement instruction input area 14 with, for example, a finger or a stylus pen. Also, by pressing the coordinate input instruction input area 13 while observing the display of the coordinate input instruction display area 12, the cursor
It indicates that the pixel indicated by the central portion P of 10 should be input as a new image (dot).

In this embodiment, the cursor thus configured will be referred to as a "graphic cursor". As shown in FIG. 4, various operations can be performed by appropriately combining graphic cursors composed of five constituent elements. For example: The cursor 10, the cursor movement instruction display area 11, and the cursor movement instruction input area 14 are set to areas close to each other so that the cursor 10 is not hidden even if the cursor movement instruction input area 14 is pressed with a finger. If you move your cursor by moving your finger on the cursor movement instruction display area 11,
The cursor movement instruction display area 11 and the cursor movement instruction input area 14 are also moved together with the cursor 10. This operation is to move the cursor 10 while keeping a short distance from the finger as the finger moves, and since the cursor 10 is away from the finger and is not hidden by the finger, the operability is extremely high. Since the target point can be reached accurately and conveniently, it is highly valuable as a display device.

In addition to the configuration of :, the coordinate input instruction display area 12 and the coordinate input instruction input area 13 are set close to the cursor 10, and when the cursor 10 moves, these areas also move. In addition to the features described in this method, the operability is extremely good in terms of inputting coordinates (as an example of this, shown in FIGS. 5A and 5B).

: In the above two configurations, the cursor movement instruction display area 11 and the coordinate input instruction display area 12 are displayed graphically. For example, the coordinate input instruction display area 12 and the coordinate input instruction input area 13 may be replaced by the above-mentioned “input” key 81 on the keyboard 9, for example. In addition ,: Do not move the cursor movement instruction display area 11 and the cursor movement instruction input area 14 together with the cursor 10.
It may be set in the fixed area as shown in FIG.

: Also, it is possible to set a general figure as a moving object instead of the cursor.

<Specific Example of Graphic Cursor> Two examples of the configuration of the graphic cursor are shown in FIGS. 5 (a) and 5 (b).

In the graphic cursor 100 shown in FIG. 5A, the cursor 10, the coordinate input instruction display area 12, the coordinate input instruction input area 1
3 and 3 are matched and overlapped (the area thus overlapped is referred to as coordinate input instruction area 30), and coordinate input instruction area 30
A movement instruction area 40 in which a cursor movement instruction display area 11 and a cursor movement instruction input area 14 are overlapped is set near the. The entire graphic cursor 100 of FIG. 5A is formed in a rectangular area having a horizontal length of L _1x and a vertical length of L _1y . The L-shaped regions 20a, 20b, 20c, 20d form the cursor 10, and the reason why the cursor 10 has such a structure is that the central portion P can be easily identified. In order to highlight the difference between the conventional graphic cursor and the graphic cursor of this embodiment, the center of the L-shaped four sides is hereinafter referred to as an "alternative position". This is because the cursor 10 and the movement instruction area 40 are separated, and the coordinates of the central portion P of the cursor become the input coordinates "instead of" with respect to the input by a finger or the like.

Set the reference coordinate position of the graphic cursor 100 to the upper left corner (X _b ,
y _b ), the relative length of the alternative position p is
X ₁ , the vertical distance is ΔY ₁ . That is, the alternative position P is (X _b , Y
It is represented by (ΔX ₁ , ΔY ₁ ) with _b ) as the origin. The movement instruction area 40 is represented by a rectangle, and the size of the area is horizontal length l _2x , vertical length l _2y , and the upper left corner position which is the reference point of the area is (X _b , y _b + l ₃ ). The reference position of the coordinate input instruction area 30 is (x _b , y _b ), and its horizontal length is l _1x and vertical length l _1y . In this way, it is easy to draw a desired graphic cursor graphic by giving the reference coordinates of each graphic and the distance from it. That is,
If you move the reference position, the graph cursor 100
Will move as it is.

FIG. 5 (b) shows the graphic cursor 10 of FIG. 5 (a).
Graphic cursor 2 which has a slightly different function from 0
This is an example of 00. The graphic cursor 200 is formed in a rectangular area having a horizontal length of L _2y and a vertical length of L _2y . The offset at the alternate position Q is ΔX ₂ horizontally and ΔY ₂ vertically. The difference from the graphic cursor 100 is the movement instruction area 6
0 is set for the entire graphic cursor 200, and accordingly, the coordinate input instruction area 50 (this area is also a movement instruction area at the same time) is a rectangle 70 that represents an area for instructing only movement from the movement instruction area 60. It is the remaining area of the graphic cursor 200 excluding. The horizontal length of the coordinate input instruction area 50 is l _4x , the horizontal length is l _4y , and the offset from the reference position is “0” both horizontally and vertically. In addition to the function of the graphics cursor 100, the graphics cursor 200 moves the coordinate input instruction area 50 while pushing the alternate position Q so that the alternate position Q is not hidden so that the coordinates can be continuously input. The movement instruction and the coordinate input instruction can be made simultaneously.

<Operation of Graphic Cursor> FIG. 6 (a) shows an example of a method of operating the graphic cursor 100 (FIG. 5 (a)). CRT Display 2
At the cursor starting position above, while pressing the movement instruction area 40, move the finger without releasing the finger. With this movement, the entire graphic cursor 100 or 200 moves. This movement is performed by changing the value of the reference coordinates (x _b , y _b ).
As can be seen from the figure, it should be noted that the alternative position P is not hidden by the finger during the movement. When the alternative position P reaches the target position, the coordinates of the target position are input by pushing the coordinate input instruction area 30 with a finger.

FIG. 6B is a diagram when the present apparatus is used in the continuous input mode (control procedure of FIG. 11) by operating the “mode” key 80. In this continuous input mode, when the finger is moved to the movement instruction area 40 of the graphic cursor 100, the graphic cursor 100 naturally moves as the finger moves, but at the same time, the coordinates of the alternative position P are input. It is possible to obtain continuous coordinate input (display it as it is to form a locus).

The example of FIG. 6 (c) has a configuration in which the respective constituent elements of FIG. 4 are disjointed, and the cursor 10 moves on the CRT display 2 as in the conventional case. The coordinate input instruction display area 12, the coordinate input instruction input area 13, and the cursor movement instruction input area 14 do not move and remain at the fixed positions shown in the figure.

In the example of FIG. 6 (d), the coordinate input instruction is performed by the coordinate input key 81 on the keyboard 9.

<Examples of Other Graphic Cursors> Other graphical cursors 300, 300 are shown in FIGS.
An example of 600 is shown. As shown in FIG. 5 (c), the outer frame 301 and the inner frame 30
The area between 2 and 2 is designated as a movement-only instruction area, the inside of the inner frame 302 is the input instruction area 304, and the inside of the outer frame 301 is the movement instruction area 303.
Is. The alternative coordinate R is represented by the center of the four L-shapes as described above. As described above, by setting the area around the alternative coordinate as the input instruction area and the area around the alternative coordinate as the movement instruction area, the alternative coordinate R can be moved to any position at the top, bottom, left, and right ends of the screen. As shown in FIG. 5D, the input instruction area 601 may be defined in a place other than around the alternative coordinate S. In particular, when the size of the graphic cursor is limited, it is effective when the locus can be input even at a place away from the alternative coordinate S. Of course area 602
The area 601 and the vicinity of the L-shape may be used as the input instruction area only by moving.

<Drawing Program and Coordinate Input Program> FIG. 7C shows an example of drawing a circuit diagram on the CRT display 2. A straight line (printed wiring) is drawn from the point E to the input pin F of the gate 101. As described above, the point F is close to the input pin of the gate 102 and it is difficult to move the cursor by distinguishing the point F and the point G with the conventional graphic cursor. An example of this drawing program is as shown in FIG. Input coordinates and the like are necessary for the drawing program to draw, and the coordinate input program gives such information. The coordinate input program moves the cursor,
It has a role of giving input coordinates to the drawing program. Figure 10, Figure 11, Figure 12, Figure 13 of the example of the coordinate input program
Figures 14 and 15 show this. The coordinate input program is called by the CPU 4 for each timer value 105 (FIG. 8) at a predetermined time interval and executed independently of the drawing program.

The arrangement of the drawing program and the coordinate input program in the memory 6 is as shown in FIG. 7 (b). FIG. 7C is a diagram showing an interface between the drawing program and the coordinate input program. From the coordinate input program, an ONOFF change flag, an OFFON change flag, a start coordinate, an end coordinate, an ON coordinate, an ON flag, etc. are passed to the drawing program. These pieces of information are stored in the memory 6 by the coordinate input program (see FIG. 8). The drawing program and the coordinate input program are multi-processed. The drawing program reads these pieces of information stored in the memory 6 and draws its own program according to the control procedure.

<Control Information> FIG. 8 shows a state in which flags and the like necessary for the control of the embodiment are stored in the memory 6. Temporary coordinates 90, moving flag 91, reference position coordinates 92, old coordinates 93, ON flag 94, alternative position coordinates 95, moving area flag 96, input flag 97, continuous mode flag 98, OFFON change flag 99, ON OFF change flag 10
1, a start coordinate 102, an end coordinate 103, an ON coordinate 104, a timer value 105, etc., and a detailed description thereof will be given when the control procedure is described. Further, the amount of L _1x or the like for specifying the size of the graphic cursor or the like is also stored in the memory 6.

<Drawing Program Control Procedure> FIG. 9 shows a drawing program control procedure. This is a simple program for drawing a straight line as shown in FIG. In step S2, the menu required for this drawing program is displayed. OFF ON change flag 9 in step S4
Wait for 9 to be set. The OFF / ON change flag 99 is set by the coordinate input program, and the fact that this flag is "1" indicates that the cursor movement instruction input area 14 has been pressed for the first time by a finger or the like. At this time, the start coordinates 102 are stored in the memory 6 by the coordinate input program described later. Step S6 waits for the ON / OFF change flag 101 to be set. The ON / OFF change flag 101 is a flag indicating that the finger has been released from the cursor movement instruction input area 14. When this flag is "1", the end coordinates 103 are stored in the memory 6. Start coordinate 1 for step S8
The addresses in the image memory 5 corresponding to 02 and the end coordinates 103 are calculated, and all the pixels between them are set to "1". Thus, the points E and F shown in FIG. 7A are simply connected by a straight line.

<Coordinate Input Program> Next, an example of the coordinate input program most characteristic of this embodiment will be described below. As described above, this coordinate input program is periodically called and executed at predetermined time intervals (timer value 105).

<Control Procedure for Graphic Cursor 100> FIG. 10 shows the graphic cursor 10 shown in FIG.
This is a control procedure associated with operation 0. In step S60, it is determined whether any part of the touch panel 1 has been pressed.
If it is determined in step S60 that there is no input, the process proceeds to step S94. Since the finger is not touching, the moving flag 91 is set to "0" in step S94. The moving flag 91 indicates that the cursor movement instruction input area 14 has been pressed once. At step S96, the ON flag 94 is checked. This O
The N flag 94 indicates that the finger previously pressed any point on the touch panel 1. When the ON flag 94 is "0", the coordinate input program is terminated, and when it is "1", step S98.
Then, the ON / OFF change flag 101 is set to "1". Step S100
Then, the ON coordinate 104 is registered as the end coordinate 103, that is, the coordinate value immediately before the finger is released is registered as the previously input coordinate value. Then, in step S102, the ON flag 94 is set to "0" to end the coordinate input program. This coordinate input program is executed again after a predetermined time has elapsed.

If any point on the touch panel 1 is pressed at step S60, it is determined that there is input, and the process proceeds to step S62 to input the touch coordinates 106 (X ', y'). At this time,
Depending on the control method of the touch panel 1, the coordinate value (X ', y') may be input first, and the presence or absence of the input may be determined by the range check of this value. In step S64, coordinate conversion is performed according to the correspondence between the touch panel 1 and the image memory 5, and the coordinates are converted into on-screen coordinates and registered as temporary coordinates 90. In step S66, a moving flag 91 indicating whether or not a finger is touched in the movement instruction area during the previous sampling
When this flag is "0", that is, when the cursor movement is not instructed at the time of the previous sampling, the process proceeds to step S72. At step S72, it is determined whether the temporary coordinate 90 (which is (X, y)) and (x, y) are within the movement instruction area 40. In this judgment, if the reference position is (x _b , y _b ), At this time, it is determined that the movement instruction area 40 is present.

If it is outside this area, the process proceeds to step S76, where the moving flag 91
Is set to "0" and it is determined in step S80 whether the temporary coordinate 90 is within the coordinate input instruction area 30. This check is When it is, it is determined to be within the coordinate input instruction area 30. When in the coordinate input instruction area 30, the ON coordinate 104 is replaced with the alternate coordinate in step S84.
95, that is, the coordinates of the point P in the cursor are registered. The ON coordinate 104, which is the information to be passed to the drawing program, is set to (x ″,
y ″) Will be expressed as Temporary coordinates 90 at step S80
When (touched point) is outside the coordinate input instruction area 30,
In step S82, the ON coordinate 104 is registered with the value of the temporary coordinate 90.
This is because it is considered that the operator has touched the touch panel 1 for the purpose other than using the cursor.

Then go to step S86. Here, the ON flag 94 is checked. The ON flag 94 is a flag indicating that the coordinates have been input in the previous sampling. If the flag is "1", the program is terminated. If the flag is "0", it is turned off at the last sampling and turned on this time. Proceed to step S88 to do so. At this time, the OFF ON change flag 99 indicating that the change to the ON state has occurred is set to "1", and step S90
Register the start coordinate 102 with the value of the ON coordinate 104, and press the step.
In S92, the ON flag 94 is set to "1" and the program ends.

If it is determined in step S72 that the movement is within the movement instruction area 40, the movement flag 91 is set to "1" in step S74, and step S98 is executed.
Proceed to. Here, the value of the temporary coordinate 90 is registered as the old coordinate 93. This is for storing the original position of the finger in order to move the graphic cursor 100 by moving the finger while touching the movement instruction area 40 in a step described later.

If the moving flag 91 is "1" in step S66, the previous movement instruction area 40 has been touched, and the screen is still touched now. Therefore, the process proceeds to steps S68 and S70, and the graphic cursor 100 is moved according to the movement of the finger. That is, in step S68, a new value of the reference coordinate of the graphic cursor 100 is calculated. Assuming that the displacement of the finger is x-coordinate and δy in y-coordinate, respectively, δx ← (x-coordinate value of temporary coordinate 90)-(x-coordinate value of old coordinate 93) δy ← (y-coordinate of temporary coordinate 90) value) - (because the y-coordinate value) of the old coordinates 93, new reference coordinates (x _b of the graphic cursor 100, a y _b) And update. Then, in step S70, the graphic cursor 100 is moved. That is, the display mechanism of the graphics cursor 100 (graphics cursor display circuit (not shown)) may be updated with new reference coordinates.
Next, in step S98, the value of the temporary coordinate 90 is moved to the old coordinate 93 in preparation for the next movement of the reference position.

With the above-described configuration, the coordinates of an arbitrary position touch the movement instruction region 40, move the finger as it is, set the centers of the four L-shaped regions, that is, the alternative positions P to the desired positions, and then input the coordinate input instruction. This is possible by touching the area 30 with a finger.

<Control Procedure of Graphic Cursor 200> With the configuration of graphic cursor 100 described above, an accurate trajectory cannot be input. To deal with this, as shown in FIG. 5B, the entire graphic cursor 200 is regarded as a movement instructing area, and a part of it is determined as the confirming instruction area.
Set to 50. FIG. 11 shows a control procedure relating to the operation of such a graphic cursor 200.

In step S110, it is determined whether or not the touch panel 1 has been pressed. Since the control procedure when it is not pressed is substantially the same as steps S94 to S102 in FIG. 10, description thereof will be omitted.

If it is determined that the touch panel 1 is pressed, it is determined that there is an input, and the process proceeds to step S112, where the touch coordinates 106 (x ',
Enter y ′). In step S114, touch coordinate 106
(X ', y') is subjected to the same coordinate transformation as that performed in step S64 of the above-mentioned embodiment to transform into coordinates on the screen, and registered as temporary coordinates 90. In step S116, the movement area flag 96 indicating whether or not the finger is touched anywhere in the graphics cursor 200 at the time of the previous sampling is checked.

When the movement area flag 96 is "1", that is, when the previous graphic cursor 200 is not instructed, step S
Continue to 122. In step S122, it is determined whether the provisional coordinates 90 (x, y) are within the graphics cursor 200. This judgment, referring to FIG. 5 (b), At this time, it may be determined that the cursor is within the graphic cursor 200.

If the temporary coordinate 90 is not in the graphics cursor 200, the process proceeds to step S130, the intra-movement area flag 96 is set to "0", and the coordinate inputting flag 107 is set to "0" at step S132. The coordinate inputting flag 107 indicates that the finger is touching the coordinate input instruction area 50 of the graphic cursor 200, and is cleared to "0" because the graphic cursor 200 is not touched. So, now that your finger is touching a place other than the graphic cursor 200,
In order to use this position as the input coordinate value, the value of the ON coordinate 104 is registered as the value of the temporary coordinate 90 in step S146. And step S
At 154, the ON flag 94 is checked. ON flag 94 is "1"
If so, the program ends, and if "0", it is off at the last sampling, and this time is on, so the process proceeds to step S156. Here, the OFF ON change flag 99 indicating that the touch panel 1 has changed to the ON state has been set to "1", and in step S158 the start coordinate 102 is registered with the value of the ON coordinate 104,
In step S160, the ON flag 94 is set to "1" and the program ends.

If it is determined in step S122 that the finger is pointing inside the graphic cursor 200, the process proceeds to step S124, and the movement area flag 96 is first set to "1". Further step S126
Check whether or not the temporary coordinate 90 is within the coordinate input instruction area 50. Only when the temporary coordinate 90 is within the coordinate input instruction area 50, the coordinate input flag 107 is set to "1" in step S128. Otherwise, this 107 remains "0" because it was cleared in steps S132 and S136. Check whether or not it is in the coordinate input instruction area 50 of step S126. It may be determined based on the formula of.

Then, in step S148, the value of the temporary coordinate 90 is registered as the old coordinate 93. The meaning of this step S148 is the same as that of the above-mentioned step S78. In step S150, it is checked whether the coordinate input flag 107 is "1". When this flag is "0", that is, when the coordinate input instruction area 50 is not touched, this program is terminated, and when touched, the coordinate value of the alternative position of the graphic cursor 200 is set at step S152. Register as the value of the ON coordinate 104. The coordinates (x ″, y ″) of this coordinate designated position can be calculated as follows.

This makes it possible to use the coordinates of the position of the point Q indicated by the graphic cursor 200 as the ON coordinates 104 instead of the position pressed by the finger. If the steps S154 and thereafter are executed as described above, the change to the ON state can be detected in the same manner, and the change to the OFF state when the finger is released can be similarly input.

If the movement area flag 96 is "1" at step S116,
You touched the graphic cursor 200 last time, and you are still touching the screen. Therefore, steps S118, S120
Then, the graph cursor 200 is moved according to the movement of the finger. In step S118, a new value of the reference coordinate of the graphic cursor is calculated. Assuming that the displacement of the finger is X coordinate and δy in y coordinate, respectively, δx = (x coordinate value of temporary coordinate 90) − (x coordinate value of old coordinate 93) δy = (y of temporary coordinate 90) (Coordinate value)-(y coordinate value of old coordinate 93), the reference coordinate (x _b ,
y _b ) And it is sufficient. Then, in step S120, the moving process of the graphic cursor 200 is performed.

Then, by executing Step S148 and the subsequent steps as described above, the finger is moved while touching the coordinate coordinate input instruction area 50 to continuously input the coordinates of the coordinate indicated position of the point Q in the graphic cursor 200. It is also possible. That is,
As the drawing program (different from FIG. 9), the ON coordinates 104 obtained from the coordinate input program are continuously stored in the image memory 5
If it is constructed so that it expands inside, the coordinate input will be obtained as a locus. The coordinate input program (FIG. 10) for executing the above-described FIG. 7 (a) is particularly effective when viewed as a display device, but the coordinate input program shown in FIG. 11 has significance as a program for the coordinate input device. is there.

<Continuous Coordinate Input> FIG. 12 shows a modification in which coordinates are continuously input using the graphic cursor 100 of FIG. 5 (a). Therefore, the "mode" key 80 on the keyboard 9 is operated to switch to the continuous input mode (that is, the continuous mode flag 98 becomes "1"). The difference from the flow chart in Fig. 10 is step S79.
Then, the continuous mode flag 98 is checked in this step S79, and if this flag is "1", the process proceeds to step S84,
When it is "0", the program is terminated.

Further, instead of the "mode" key 80, an area for instructing mode switching can be set on the screen. In that case, for example, a mode switching instruction area is set in a part of the movement instruction areas 40, 60, and a step for checking the OFF → ON change to this area is inserted between steps S66 and S72, and in that area. The continuous mode flag 98 is inverted every time OFF → ON or ON → OFF change of the. On the other hand, when setting the mode switching instruction area outside the movement instruction areas 40 and 60, OFF → ON or ON
→ Insert the OFF change check step between step S80 and step S82. However, in this case, if a mode switching instruction is issued, the program may be terminated without proceeding to step S82.

In this way, the coordinate input method can be appropriately changed to either one-shot or continuous, and the coordinate can be input using the alternative position coordinate as the input coordinate, so that the operability is significantly improved.

<Coordinate Input Instruction from Keyboard> In the embodiment described above, the coordinate input instruction is performed by inputting on the display graphic (that is, inputting on the touch panel 1). The embodiment shown in FIG. 13 partially corresponds to FIG. 6 (d), and the coordinate input instruction is given from the keyboard 9. This instruction is “input” as shown in FIG. 6 (d).
It was done by key 81. The flow chart shown in FIG. 13 is basically the same as the flow chart shown in FIG. 12 in terms of its structure. Instead of steps S80, 82, S84 shown in FIG. 12, the coordinates from the “input” key 81 at step S95 are used. This is to confirm whether or not there is an input instruction.

<Variation of Cursor Movement Speed> In the embodiment described above, when the movement instruction area 40 or 60 is input, the movement speed of the graphic cursor is basically the same as the movement speed of the finger. In the embodiment described below, the moving speed of the cursor is made variable. This is to move the cursor at high speed when the target is far, and to move the cursor closer to the target point at a speed lower than the moving speed of the finger in order to improve accuracy.

Therefore, step S68 in FIGS. 10, 12, and 13 and step S118 in FIG. 11 are changed as shown in FIG. That is, the flow chart step S68 or step S12
When step 8 is reached, jump to step S1001 in FIG. 14 and execute. First, the movement displacement of the finger is calculated as x coordinate, y
If the coordinates are δx and δy, in step S1001, δx ← (x coordinate value of temporary coordinate 90)-(x coordinate value of old coordinate 93) δy ← (y coordinate value of temporary coordinate 90)-(old coordinate 93 y coordinate value) is calculated. Then, in step S1002, the moving amount of the graphic cursor is set to γ (107), Is calculated and the threshold value R stored in the memory 6 at a constant distance is calculated.
Compare with (111). If the movement amount γ (107) is less than R (111), step S1003 is executed, and if not, step S1003 is omitted and the process proceeds to step S1004.

In step S1003, a constant α is set for each of the movement amounts δx and δy.
The result of multiplying by (108) is set again as each movement amount. Here, by setting the constant α (108) to be less than 1, the movement amount is changed to be smaller than the actual movement of the finger. On the contrary, if the amount is 1 or more, the speed can be increased. At step S1004, set the reference coordinates (x _b , y _b ) of the graphic cursor. And

According to the above-described configuration, the precise position is instructed by touching the movement instruction area, moving the finger as it is, and quickly moving the center of the four L-shaped areas, that is, the alternative positions to the vicinity of the target position, At the time of alignment, by moving the finger flexibly, even if the resolution of the coordinate input device is small, it is possible to move to any position.
Generally, when pointing a precise position, at first, a rough and rough alignment is performed, and when pointing the final position, it is in agreement with the human action to be performed gently, so that there is no discomfort.

Now, the program in Fig. 14 is called regularly. Therefore, the movement amount calculated by the above-mentioned formula has a meaning as a speed because the program is called regularly although the unit is a dot. Here, the fixed threshold R (111) will be derived.

If the movement speed of the cursor is less than 30 mm per second for the fine adjustment mode, and if the higher speed is for the coarse adjustment mode to give the operator an appropriate operating feeling, the dot density of the screen is within 30 mm. If 4 dots / mm, 4 × 30 dots are included. That is, if the moving speed of the cursor is v _a , then v _a = 120 dots / sec. Therefore, if the coordinate input program is called every t _s seconds, R = t _s · V _a = t _s × (30 × 4) = 120 t _s [dot] is a standard for the threshold value R (111). For example, when the coordinate input program is called every 100 _ms , R (111) = 12 [dots]. When the movement of the finger at this time is γ _a dot, the moving speed V _{a of the} finger is V _a = γ _a / t _s [dot / sec]. Here, the unit of γ _a is [(actual distance of screen) /
(The length between the coordinates of that length)].

<Modified Example of Variable Moving Speed> As described above, when the coordinate input program is called every 100 _ms , the threshold value R = 12 is obtained as described above, but the finger input is changed at each sampling (when the coordinate input program is called). When the movement amount is less than 12, it can be determined that the speed is less than 30 mm / _s . Therefore, the measures to be taken when the resolution of coordinate input is low will be described below. Even in such a case, the alternative position of the cursor must be able to accurately indicate a specific point for each dot. Therefore, even in the case of the touch panel 1 in which only coordinate input for every n dots (n is a natural number) is possible (for example, coordinate input for every 4 dots when the minimum width is 1 mm), the above constant α (108) is set to " If set to 1 / n, the input displacement will be γ
In this case, the movement of the alternate position coordinate when moving slowly becomes γ / n, and in the case of the minimum movement n dots, the displacement of the alternate position coordinate is 1 dot, so specify an arbitrary position in 1 dot units. Is possible.

However, in the case of the above example, an example of sampling 10 times per second (100 ms sampling rate) was shown, but it is necessary to increase the sampling rate when performing a smoother movement or when inputting a trajectory at a higher speed. There is. In this case, the displacement for each sampling becomes small, and it becomes impossible to distinguish the displacement speed from the high speed and the low speed in the above method. For example, when sampling every 10 m _s , R = 1.2, which should be γ ≥ 4 in the case of coordinate input with a minimum of 4 dots, but γ <R (111)
The condition of is only satisfied when γ = 0,
The above effect disappears. In such a case, as one method, the average value of the displacements in the past k samplings is calculated and stored as γ ′, and the condition of γ ′ <R may be used in step S1002.

Next, as one mode of the operation of the graphic cursor, the movement of the finger may move abruptly and largely. As a countermeasure, the control of the flow chart shown in FIG. 15 may be used instead of the flow chart shown in FIG. That is, step S1
After 001, the movement amount γ is set in step S1010. Then, in step S1011, check whether γ is "0". If it is not "0", in step S1012 the average displacement γ'is calculated by γ '← γ / B. The initial value of this parameter β (109) is set to the value “1”. When γ = 0, the average displacement γ ′ is also set to “0” in step S1014, and β (109) in step S1015.
The value of is incremented by one. By doing so, even if γ (107) suddenly increases from “0”, β (10
Since 9) is an amount commensurate with the time when γ (107) was “0”, abrupt movement can be alleviated by setting γ (107) / β (109) in step S1012. . or,
By resetting β (109) to "1" in step S1013, when γ (107) is continuously large, the displacement is compensated only at the beginning, so that the displacement γ ' Will be available from next time. The concept of the above method is shown in FIG.

By doing so, when the resolution of coordinate input is low, the displacement "0" continues, and it becomes possible to deal with the case where the displacement rapidly increases at a certain boundary.

Furthermore, in the above embodiment, when the displacement γ is smaller than the threshold value R (111), the coefficient α is added to the horizontal displacement δx and the vertical displacement δy.
(108) is applied, but the coefficient α (108) is displaced by γ
Function f (γ) of step S1002 (S1002 ')
Instead of step S1003, instead of May be This function f (γ) As, when calling the program for each 100m _s R = 12
Becomes Therefore, the selected α may be multiplied by r by returning any one of the plurality of α ₁ , α ₂ , ... α _k . It should be noted that if α is set to not only less than 1 but also to 1 or more, it is possible to rapidly move the finger and move the graphic cursor so as to repel it.

<Application to General Graphic> By the way, all of the various embodiments described above are examples of cursors or graphic cursors. However, the invention is not limited to application to cursors or graphics cursors. That is, it is naturally conceivable to use a general figure as a moving target. In this case, the figure to be moved is designated by using the cursor or the graphic cursor of the above-mentioned embodiment, and the designated figure is easily moved by a method similar to the above-mentioned cursor movement, that is, parallel movement. .

[Effects of the Invention] As described above, according to the display control device of the present invention, a predetermined area is displayed in the vicinity of the graphic to be moved, the designated position in this area is moved, and the moving speed of the designated position is changed. Accordingly, the moving speed of the figure to be moved is controlled. Therefore, the figure to be moved is moved at a desired speed, and the movement is accurate.

[Brief description of drawings]

FIG. 1 is a diagram for explaining the principle of the embodiment according to the present invention, FIG. 2 is a diagram for explaining the problems of the conventional example in CAD, and FIG. 3 (a) is a block of the coordinate input / display device of the embodiment. Configuration diagram, FIG. 3 (b) is a diagram for explaining the display surface of the CRT display, FIG. 4 is a principle configuration diagram of the graphic cursor used in the embodiment, and FIG. 5 (a) to (d) are implementations. Configuration diagrams of various examples of the graphic cursor used in the examples, FIGS. 6 (a) to 6 (d) are diagrams for explaining how to perform an operation using the graphic cursor, and FIG. 7 (a) is a drawing. FIG. 7 is a diagram for explaining how the program is applied to CAD, FIGS. 7 (b) and 7 (c) are diagrams for explaining the relationship between the coordinate input program and the drawing program, and FIG. 8 is various types used for controlling the embodiment. FIG. 9 is a diagram for explaining how control information is stored in the memory, and FIG. 9 is a drawing. A flow chart of an example of the program, FIGS. 10 to 15 are flow charts of the control procedure of the embodiment, and FIG. 16 is a view for explaining the operation of the modification of the movement of the cursor. In the figure, 1 ... Touch panel, 2 ... CRT display, 4 ... C
PU, 5 ... Image memory, 6 ... Memory, 7 ... Touch panel control circuit, 9 ... Keyboard, 10 ... Cursor, 11
...... Cursor movement instruction display area, 12 …… Coordinate input instruction display area, 13 …… Coordinate input instruction input area, 14 …… Cursor movement instruction input area, 30 …… Coordinate input instruction area, 40 …… Movement instruction area, 50 …… Coordinate input instruction area, 60 …… Movement instruction area, 100,200,300,600 …… Graphic cursor, C, D
...... Cursor movement locus, P, Q, R, S …… Alternative position, 400 ……
Cursor, 401 ... Coordinate displacement detection means, 402 ... Cursor movement means, 403 ... Graphic movement means, 500 ... Cursor movement instruction area, 700 ... Movement target figure.

Claims (3)

[Claims] 1. Display control means for displaying a graphic to be moved and a region of a predetermined size, which is separated by a predetermined distance in the vicinity of the graphic, on the display screen of the display means. A coordinate input means having coordinate input surfaces arranged so as to overlap, a detection means for detecting a position indicated by the coordinate input means, and a position of the coordinate input surface of the coordinate input means corresponding to the area are And a movement control unit that moves the graphic according to the movement when the designated position is detected and the designated position is moved. A display control device characterized in that the moving distance of the figure is changed according to the difference in moving speed of the figure. 2. The display control device according to claim 1, wherein the graphic is a cursor graphic. 3. The display control device according to claim 2, wherein a line is displayed at a position where the graphic has moved.