JPH064217A - Coordinate input device - Google Patents

Abstract

PURPOSE:To input position coordinate information with the precision of the display resolution of a display screen even when the resolution of the display screen is higher than the resolution of a pointing device. CONSTITUTION:When a pen 2 is positioned in an area 8 on a bit map display device 1, a detection part 4 judges predetermined specific operation of the pen 2 and notifies the detection of the specific operation of the pen 2 to a control part 6. The control part 6, in the case of inputting the generation information on the specific operation of the pen 2, from the detection part 4, varies the position information of the pen 2 from a coordinate detection part 3 into a previously set movement quantity, and determines coordinates where a cursor 7 needs to be displayed based on the movement quantity, thereby issuing an instruction to a cursor display control part 5. The cursor display control part 5 displays the cursor 7 on the bit map display device 1 by the control of the control part 6.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a coordinate input device, and more particularly to a coordinate input device using a pointing device.

[0002]

2. Description of the Related Art Conventionally, in this type of coordinate input device,
The accuracy of the input position coordinate information on the display screen is regulated by the resolution of the pointing device.

In such a conventional coordinate input device, when the display resolution of the display screen is higher than the resolution of the pointing device, the position coordinate information cannot be input with the accuracy of the display resolution of the display screen. However, there is a drawback in that it cannot be used in applications that require precision in pixel units of the display screen.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional ones. Even when the display resolution of the display screen is higher than that of the pointing device, the display resolution of the display screen is accurate. An object of the present invention is to provide a coordinate input device capable of inputting position coordinate information.

[0005]

A coordinate input device according to the present invention is a coordinate input device including a bitmap display device and a pointing device for inputting coordinates on the screen of the bitmap display device, wherein the pointing device is preset. Detecting means for detecting the specified operation, and coordinates on the screen of the bitmap display device according to a predetermined ratio of input data from the pointing device when the detecting operation detects the specified operation. And a conversion means for converting to.

[0006]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, when an arbitrary point is pointed by the pen 2 on the bitmap display device 1, the coordinates of the point pointed by the pen 2 are detected by the coordinate detection unit 3. The coordinate detection unit 3 outputs the detected coordinates to the control unit 6.

When the pen 2 points to a preset area 8 on the bitmap display device 1, the detecting unit 4 determines that this is a predetermined operation for identifying the pen 2, and identifies the pen 2. The detection of the operation is notified to the control unit 6.

The cursor display control section 5 displays the cursor 7 on the bitmap display device 1 under the control of the control section 6. The control unit 6 determines the coordinates at which the cursor 7 should be displayed based on the position information of the pen 2 from the coordinate detection unit 3 and the occurrence information of the specific operation of the pen 2 from the detection unit 4, and the cursor display control unit 5 To specify the cursor coordinates.

FIG. 2 is a diagram showing the relationship between the specific operation of the pen 2 and the movement of the cursor 7 in FIG. In the figure, when the pen 2 during the specific operation moves from the point A to the point B on the bitmap display device 1, the cursor 7 moves from the point a to the point b. That is, if the pen 2 is performing a specific operation, the cursor 7
The position of is changed by an amount obtained by proportionally reducing the moving amount of the pen 2.

The operation of one embodiment of the present invention will be described with reference to FIGS. 1 and 2. When the pen 2 is positioned in the area 8 on the bitmap display device 1, the detection unit 4
This is detected as the start of the specific operation of the pen 2. When the pen 2 moves away from the bitmap display device 1 after the moving operation, the detecting unit 4 determines that the specific operation of the pen 2 has ended, and stops outputting the specific operation occurrence information to the control unit 6.

After the detection unit 4 detects the start of the specific operation of the pen 2, if the pen 2 is positioned outside the area 8 and the movement operation is performed while the pen 2 is pressed against the display screen of the bitmap display device 1, the control unit Reference numeral 6 determines the coordinates at which the cursor 7 should be displayed by proportionally reducing the movement amount of the pen 2 calculated based on the position information of the pen 2 from the coordinate detection unit 3 to a preset movement amount.

For example, when the coordinates on the bitmap display device 1 are input by positioning the pen 2, the desired coordinates (FIG. 2) depending on the relationship between the accuracy of the coordinate detection unit 3 and the resolution of the bitmap display device 1 (FIG. 2). If the cursor 7 could not be positioned at the point b), the pen 2 is positioned in the area 8 to start the specific operation of the pen 2.

After positioning the pen 2 in the area 8, the pen 2 is brought out of the area 8 and the bitmap display device 1
Move from point A to point B while still pressing. Control unit 6
Reduces the change of the pen 2 (change from point A to point B) without using the coordinates of the coordinate information from the coordinate detection unit 3 while the generation information of the specific operation is output from the detection unit 4. Control to change the cursor display position by the amount.

As a result, even when the cursor 7 is positioned at the point a rather than at the point b, the points a and b
The cursor 7 can be positioned at the point b by moving the pen 2 so that the cursor 7 changes by the distance between and. Therefore, a point on the bitmap display device 1 can be designated with a precision smaller than that of the coordinate detection unit 3.

Here, the pen 2 proportionally reduced by the controller 6
The relationship between the movement amount of P and the preset movement amount is set from the relation between the resolution of the coordinate detection unit 3 and the resolution of the bitmap display device 1. That is, when the pen 2 is moved by a predetermined value, the cursor 7 is displayed on the bitmap display device 1.
Is set to be moved by one pixel.

In this way, when the detection unit 4 detects that the pen 2 is positioned in the area 8, the control unit 6 proportionally reduces the movement amount of the pen 2 to a preset movement amount and moves the cursor. By determining the coordinates to display 7, even if the resolution of the bitmap display device 1 is higher than the resolution of the coordinate detection unit 3, the position coordinate information can be input at the resolution of the bitmap display device 1. it can.

In one embodiment of the present invention, the pen 2 is placed in the area 8
Although the detection unit 4 detects the specific operation of the pen 2 when positioned at, the specific operation of the pen 2 may be detected by inputting a command from the keyboard or pressing a predetermined button. Not limited to.

[0019]

As described above, according to the present invention, when the preset specific operation of the pointing device for inputting the coordinates on the screen of the bitmap display device is detected, the input data from the pointing device is detected. By converting the coordinates into coordinates on the screen of the bitmap display device according to a predetermined ratio, even if the display resolution of the display screen is higher than that of the pointing device, the position can be displayed with the accuracy of the display resolution of the display screen. The effect is that coordinate information can be input.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a specific operation of the pen of FIG. 1 and movement of a cursor.

[Explanation of symbols]

 1 Bitmap display device 2 Pen 3 Coordinate detection unit 4 Detection unit 6 Control unit 8 area

Claims (3)

[Claims] 1. A coordinate input device including a bitmap display device and a pointing device for inputting coordinates on the screen of the bitmap display device, the detection being for detecting a preset specific operation of the pointing device. And means for converting the input data from the pointing device into coordinates on the screen of the bitmap display device according to a predetermined ratio when the specific operation is detected by the detecting means. A coordinate input device characterized in that 2. The detecting device detects the specific operation when the pointing device indicates a preset area on the screen of the bitmap display device. Coordinate input device. 3. The coordinate input device according to claim 1, wherein the predetermined ratio is preset based on a display resolution of the bitmap display device and a resolution of the pointing device.