JPH1097383A - Coordinate input device of screen position indicating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To input absolute coordinates without using any dedicated device driver and eliminates the need for calibration operation accompanying a change in resolution by sending out relative coordinate data corresponding to the difference between absolute coordinate data on cursor coordinates and a target position to an operating system until the difference is removed, and moving a cursor. SOLUTION: An interface device 5 regards absolute coordinate data sent out of the screen position indicating device 1 as absolute coordinate data on the target position and absolute coordinate data sent out of the screen position indicating device 1 right before the absolute coordinate data on the target position as absolute coordinate data on an original position, and calculates the difference between the absolute coordinate data on the target position and the absolute coordinate data on the original position and sends relative coordinate data corresponding to the difference to the operating system 3 through a device driver 4 for pointing, thereby moving the cursor on the display.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coordinate input device for transmitting absolute coordinate data of a pointing device (screen position indicating device) such as a touch panel or a digitizer to a computer, and particularly to a dedicated device for the screen position indicating device. The present invention relates to a coordinate input device of a screen position pointing device that does not require a driver for each operating system (OS) of a computer and can use a mouse port.

[0002]

2. Description of the Related Art As a screen position pointing device handled by a graphical user interface (GUI) in a computer operating environment, there are a mouse, a trackball, etc. for inputting relative coordinates, a touch panel, a digitizer, etc. for inputting absolute coordinates. I do.

A screen position indicating device for inputting relative coordinates such as a mouse and a trackball is mainly connected to a mouse port of a computer, and the input relative coordinate data is stored in a device driver for a pointing device (mainly a device driver) prepared in advance in an OS. The cursor is displayed on the screen by being taken into the OS via the mouse driver. On the other hand, a screen position indicating device 11 such as a touch panel and a digitizer
Since the absolute coordinates cannot be handled by the mouse driver corresponding to the relative coordinates as shown in (1), it is connected to a serial port of RS-232C or a parallel port conforming to Centronics via the interface device 12, and The cursor is displayed on the screen by being taken into the OS 15 via the dedicated device driver 13 corresponding to the OS 15 of the computer 14 for each position pointing device 11.

[0004]

However, in the conventional dedicated device driver 13 used for the screen position pointing device 11 described above, the pointing device device driver 16 prepared in the OS 15 is basically not disclosed. Therefore, it is very difficult to create the dedicated device driver 13 corresponding to the OS 15 to be used, and it requires an extremely large amount of trouble and a long time.

[0005] The resolution of display on a computer is VGA depending on the type of graphics control mechanism.
(640 x 480 dots), SVGA (800 x 600
Dot), XGA (1024 × 768 dots), etc., but the size of the display screen changes each time the display resolution is changed.
A laborious calibration operation was required to match the coordinate data from the computer with the cursor coordinates of the computer.

In view of the above, the present invention has been devised in view of the above points, and can handle coordinate data of a screen position pointing device for inputting absolute coordinates without using a dedicated device driver for each OS. It is an object of the present invention to realize a coordinate input device of a screen position pointing device that can eliminate a calibration operation accompanying a change in resolution.

[0007]

In order to achieve the above-mentioned object, a coordinate input device of a screen position pointing device of the present invention is provided between a computer and a screen position pointing device for inputting absolute coordinates. Is calculated from the absolute coordinate data of the target position transmitted from the above and the absolute coordinate data of the original position transmitted from the screen position indicating device immediately before the absolute coordinate data of the target position, and the relative coordinate data corresponding to the difference is calculated. An interface device for moving the cursor displayed on the display of the terminal by loading the operating system via a device driver for a pointing device prepared in advance in the operating system, and for the pointing device incorporated in the computer. Cursor position where the cursor is located from the device driver And a cursor coordinate capturing means for capturing and sending the coordinate data to the interface device. The interface device stores relative coordinate data according to the difference between the cursor coordinates and the absolute coordinate data of the target position until the difference disappears. And sending the cursor to the operating system via a device driver for moving the cursor.

In the interface device, relative coordinate data transmitted to the pointing device device driver to move the cursor, and the relative coordinate data transmitted to the pointing device device driver and moved by the cursor. A coordinate data input / output comparison table in the pointing device device driver is calculated and set in advance from the value of the cursor coordinate data obtained by the coordinate capturing means, and the interface device sets the absolute coordinate data of the target position and the cursor. The relative coordinate data obtained from the difference from the cursor coordinate data fetched by the coordinate fetching means is corrected using the coordinate data input / output comparison table, and is corrected as the corrected relative coordinate data via the pointing device device driver. May move the cursor by sending to said operating system Te.

[0009] Alternatively, the absolute coordinate data of the target position which is interposed between the screen position pointing device for inputting the absolute coordinates and the computer and is sent from the screen position pointing device, and the screen position pointing device immediately before the absolute coordinate data of the target position. The difference between the absolute coordinate data of the original position sent from the device and the absolute coordinate data is calculated, and the relative coordinate data corresponding to the difference is taken into the operating system via a pointing device device driver prepared in advance in the operating system. An interface device for moving a cursor displayed on a display of a terminal, and cursor coordinate capturing means incorporated in the computer, capturing cursor coordinates at which the cursor is located from the pointing device device driver, and sending the cursor coordinates to the interface device. What The interface device captures the cursor coordinate data of the cursor positioned at the center of the screen by the pointing device device driver at the time of initialization from the cursor coordinate capture means, and doubles the cursor coordinate data to double the cursor coordinate data. The feature is obtained as a resolution.

The interface device may hold coordinate input area data set in advance for each type of display resolution, and construct a coordinate input area according to the acquired display resolution.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in the block diagram of FIG. 1, a coordinate input device of a screen position indicating device according to the present invention is a screen position indicating device 1 for inputting absolute coordinates such as a touch panel and a digitizer. I will explain as an example)
The absolute coordinate data transmitted from the screen position pointing device 1 is converted into relative coordinate data by pressing the input area of the screen position pointing device 1 between the An interface device 5 that is loaded into the operating system 3 via a pointing device device driver 4 that is a prepared mouse driver to move a cursor displayed on a display of the terminal, and a pointing device device incorporated in the computer 2 And a cursor coordinate capturing means 6 for capturing the cursor coordinates at which the cursor is positioned from the driver 4 and sending it to the interface device 5.

The screen position pointing device 1 used in the present invention is a touch panel of an absolute coordinate input type incorporated on the surface of a flat panel display such as a liquid crystal panel. A bidirectional bus is used between the interface device 5 and the computer 2, and the coordinate input device of the present invention uses a mouse driver as a device driver for a pointing device, so that relative coordinates of a mouse, a trackball, and the like are input. A mouse port for a screen position pointing device can be used. Of course, a port other than the mouse port may be used.

The interface device 5 uses the absolute coordinate data transmitted by pressing the input area of the screen position indicating device 1 as the absolute coordinates of the target position to which the cursor should move, and the position of the display corresponding to the absolute coordinates. Computer 2 to move the cursor to the (pressed position)
However, since the pointing device device driver 4 processes relative coordinate data, it is necessary to convert the absolute coordinate data into relative coordinate data.

Therefore, the absolute coordinate data sent from the screen position pointing device 1 immediately before the absolute coordinate data of the target position is used as the absolute coordinate data of the original position, and the interface device 5
Calculates the difference between the absolute coordinate data of the target position and the absolute coordinate data of the original position, and loads the relative coordinate data corresponding to the difference into the operating system 3 via the pointing device device driver 4 to display the cursor on the display. Is to move. When the pointing device driver 4 is initialized, the cursor is initially set at the center position of the display. Therefore, the absolute coordinate data of the original position at the time of initialization is the coordinates of the center of the display (X and Y are the display resolutions). (Position at 1/2).

A mouse as a pointing device outputs a pulse train of 1 to 127 as a packet, and a mouse driver used as the device driver 4 for the pointing device receives a certain pulse train in a short time and a long time. The amount of movement of the cursor is different from that received in time, and an algorithm for acceleration is provided such that the greater the number of pulses per unit time, the greater the amount of movement of the cursor (the degree of acceleration differs from computer to computer). . This acceleration algorithm is necessary to move the cursor faster,
The cursor overshoots the target position by receiving many pulse trains in a short time. In a screen position indicating device such as a touch panel or a digitizer, the pressed target position and the cursor position should always coincide with each other. Therefore, without deleting the acceleration algorithm, the cursor moves too far over the target position. It is necessary to prevent unnatural movement.

Therefore, in the coordinate input device of the screen position pointing device of the present invention, the computer 2 incorporates the cursor coordinate acquiring means 6 as a new device driver. The cursor coordinate acquiring means 6 acquires the cursor coordinates (absolute coordinates) at which the cursor is actually located from the pointing device device driver 4, and transmits the cursor coordinate data to the interface device 5 through the bidirectional bus. Then, the interface device to which the cursor coordinate data is fed back calculates the difference between the absolute coordinate data of the target position and the cursor coordinate data, and returns relative coordinate data corresponding to the difference via the pointing device device driver 4 again. The operating system 3 to move the cursor on the display. It should be noted that the cursor coordinate acquisition means 6 is easily created for each operating system 3 because the cursor coordinate acquisition portion is basically disclosed even in the undisclosed pointing device driver 4. It is.

The operation of the coordinate input device of the screen position indicating device of the present invention having such a configuration will be described below. First, when the input area of the screen position indicating device 1 is pressed, the screen position indicating device 1 sends the absolute coordinate data corresponding to the position to the interface device 5. The interface device 5 uses the absolute coordinate data as the absolute coordinate data of the target position, and the absolute coordinate data sent from the screen position indicating device 1 immediately before the absolute coordinate data of the target position as the absolute coordinate data of the original position. At the same time, the difference between the absolute coordinate data of the target position and the absolute coordinate data of the original position is calculated, and according to this difference, the cursor is not over the absolute coordinate of the target position even by the acceleration algorithm. / 2/2/3 (not limited to this value) relative coordinate data via the pointing device device driver 4 to the operating system 3.
And move the cursor on the display.

The cursor coordinate acquiring means 6 acquires the cursor coordinate data of the moved cursor from the pointing device device driver 4 and sends it to the interface device 5. The interface device 5 calculates a difference between the absolute coordinate data of the target position and the cursor coordinate data, and causes the operating system 3 to again capture relative coordinate data corresponding to the difference via the pointing device device driver 4. The operation of moving the cursor on the display is performed. As described above, when the cursor coordinates and the absolute coordinates of the target position are different, the above operation is performed until the cursor coordinates and the absolute coordinates of the target position match. The reason that the relative coordinate data sent to the pointing device device driver 4 is set to 1/2 to 2/3 of the difference is when the value of the relative coordinate data is large to a certain extent, and the value of the relative coordinate data is If it becomes smaller, the acceleration algorithm does not work, so the relative coordinate data is used as the difference.

As an application example of the coordinate input device of the screen position indicating device of the present invention, relative coordinate data sent to an interface device to move a cursor to a device driver for a pointing device, and the relative coordinate data are sent to the interface device. A cursor data input / output comparison table in the pointing device device driver is calculated and set in advance from the value of the cursor coordinate data obtained by the cursor coordinate capturing means for the cursor transmitted and moved to the pointing device device driver. Is also good.

Actually, when the screen position indicating device is connected,
The interface device 5 has 1 to 1 as relative coordinate data.
The 27 pulse trains are sequentially transmitted to the pointing device device driver 4, and the cursor coordinates of the moved cursor are thereby acquired from the pointing device device driver 4 and transmitted to the interface device 5. Then, the interface device 5 creates a coordinate data input / output comparison table that compares the transmitted relative coordinate data of 1 to 127 with the acquired 127 cursor coordinate data. As a result, relative coordinate data from which the acceleration applied by the pointing device device driver 4 has been subtracted (corrected) can be easily obtained. Therefore, the interface device 5 sets the relative coordinate data up to the target position of the cursor to be moved. Is applied to the numerical value on the output side of the coordinate data input / output comparison table, and conversely, the numerical value on the input side is sent to the pointing device device driver 4 as corrected relative coordinate data.

The device driver 4 for the pointing device of the computer 2 positions the cursor at the center of the screen at the time of initialization, and the interface device 5 of the present invention obtains the cursor coordinate data at the time of initialization. In addition to fetching the data from the input means 6 and doubling the cursor coordinate data, it is possible to obtain the display resolution of the terminal.

The interface device 5 stores coordinate input area data set in advance for each resolution of the display, and constructs the coordinate input area in accordance with the acquired resolution of the display. Each time is changed, the calibration operation performed to match the coordinate data from the screen position indicating device with the cursor coordinates of the computer becomes completely unnecessary.

[0023]

As described above in detail, according to the coordinate input device of the screen position pointing device of the present invention, the screen position pointing device for inputting the absolute coordinates can be replaced by a dedicated device driver for each operating system, which has been conventionally required. Without using
It can be used by connecting it to a computer, and can respond very quickly to a new operating system. Also,
Each time the absolute coordinates of the target position are input from the screen position indicating device, the cursor coordinates are acquired and the error is corrected,
No displacement of the cursor occurs.

Alternatively, the interface device doubles the cursor coordinate data by fetching the cursor coordinate data of the cursor positioned at the center of the screen at the time of initialization by the pointing device device driver from the cursor coordinate capturing means. It can be obtained as the resolution of the display of the terminal. This allows the interface device to hold coordinate input area data set in advance for each resolution of the display and construct the coordinate input area according to the acquired resolution of the display, thereby changing the conventional resolution. Each time, the time-consuming calibration operation performed to match the coordinate data from the screen position pointing device with the cursor coordinates of the computer becomes unnecessary.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a coordinate input device of a screen position indicating device according to the present invention.

FIG. 2 is a block diagram showing a connection between a conventional screen position pointing device and a computer.

[Explanation of symbols]

 Reference Signs List 1 screen position indicating device 2 computer 3 operating system 4 device driver for pointing device 5 interface device 6 cursor coordinate capturing means

Claims (4)

[Claims] 1. An absolute coordinate input screen position indicating device which intervenes between a screen position indicating device for inputting absolute coordinates and a computer and which is sent from the screen position indicating device and immediately before the target position absolute coordinate data. The difference between the absolute coordinate data of the original position sent from the device and the absolute coordinate data is calculated, and the relative coordinate data corresponding to the difference is taken into the operating system via a pointing device device driver prepared in advance in the operating system. An interface device for moving a cursor displayed on a display of a terminal; and cursor coordinate capturing means incorporated in the computer, capturing cursor coordinates at which the cursor is located from the pointing device device driver, and sending the cursor coordinates to the interface device. Become The interface device sends relative coordinate data corresponding to the difference between the cursor coordinates and the absolute coordinate data of the target position to the operating system via the pointing device device driver until the difference disappears, thereby moving the cursor. A coordinate input device of a screen position pointing device which is a feature. 2. The interface device according to claim 1, wherein the relative coordinate data transmitted to the pointing device device driver to move the cursor, and the relative coordinate data transmitted to the pointing device device driver and moved by the cursor. From the value of the cursor coordinate data acquired by the coordinate capturing means, a coordinate data input / output comparison table in the pointing device device driver is calculated and set in advance, and
The interface device corrects relative coordinate data obtained from the difference between the absolute coordinate data of the target position and the cursor coordinate data captured by the cursor coordinate capturing means using the coordinate data input / output comparison table. 2. The coordinate input device according to claim 1, wherein the coordinate data is sent to the operating system via the pointing device device driver as coordinate data to move a cursor. 3. The absolute coordinate data of a target position which is interposed between a screen position pointing device for inputting absolute coordinates and a computer and is sent from the screen position pointing device, and the screen position pointing immediately before the absolute coordinate data of the target position. The difference between the original position and the absolute coordinate data sent from the device is calculated, and the relative coordinate data corresponding to the difference is taken into the operating system via a pointing device device driver prepared in advance in the operating system. An interface device for moving a cursor displayed on a display of a terminal, and cursor coordinate capturing means incorporated in the computer, capturing cursor coordinates at which the cursor is located from the pointing device device driver, and sending the cursor coordinates to the interface device. Become The interface device captures the cursor coordinate data of the cursor positioned at the center of the screen by the pointing device device driver at the time of initialization from the cursor coordinate capturing means, and doubles the cursor coordinate data to obtain the resolution of the terminal display. A coordinate input device for a screen position pointing device, which is acquired. 4. The interface device according to claim 3, wherein the interface device stores coordinate input area data set in advance for each resolution of the display, and constructs the coordinate input area according to the acquired resolution of the display. The coordinate input device of the screen position indicating device described in the above.