JPH06202805A - Position information input system - Google Patents

Abstract

PURPOSE:To enable pen operations without changing or correcting the mouse driver of an application in the case of the application which enables mouse operations. CONSTITUTION:In response to an operation input from a pen 5, a pseudo mouse interruption generating part 7 reads a pen instructed coordinate, stores it in a memory 9 and generates pseudo mouse interruption. While receiving this pseudo mouse interruption, a CPU 1 generates the reading instruction of a mouse vector coordinate for a mouse driver 2. The mouse driver 2 outputs the reading instruction of the mouse vector coordinate to an interface 3 but a pen coordinate/mouse vector coordinate transformation part 8 performs the I/O hook of this instruction, transforms the stored coordinate in the RAM 9 to a vector coordinate and dispatches it to the mouse driver 2. Therefore, the mouse driver enables normal mouse driver processing without regarding whether it is a pen operation or a mouse operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position information input system, and more particularly to a position information input system used to specify a position on a display screen such as a CRT display in an information processing apparatus.

[0002]

2. Description of the Related Art A pointing device used in this type of position information input system is, for example, a coordinate pointing pen or a mouse that generates coordinate change information (vector information) according to the amount of rotation of a rotating body. The former coordinate pointing pen is suitable for pointing a graphic or the like displayed on the display screen, but it is difficult to point an accurate coordinate position. The latter mouse can specify a reliable position, but it takes time to specify a figure or the like displayed on the screen.

Therefore, a technique for appropriately performing an input operation corresponding to such a user's request is disclosed in Japanese Patent Laid-Open No. 1-17.
It is disclosed in Japanese Patent No. 5622. According to this technique, two functions of a pen and a mouse are incorporated in the pen input unit in advance, and both functions are appropriately selected by a selection switch each time to perform an input operation according to a user's request. You can do it.

[0004]

However, in such a conventional position information input system, it is necessary that the application program can handle both pen input and mouse input. For example, if the above technique is applied to an application program that supports only mouse input, the mouse driver needs to be modified to support pen input, and as a result, the application must be modified. is there.

It is an object of the present invention to provide a position information input system which enables easy input by a pen operation without requiring modification of a mouse driver even in an application capable of input by a mouse operation.

[0006]

A position information input system according to the present invention comprises a mouse input means for generating coordinate change information according to a rotation amount of a rotating body, a coordinate pointing pen input means, and
In response to the operation of the pen input means, pseudo mouse interrupt generating means for reading the designated coordinate information at that time to generate a pseudo mouse interrupt, and in response to the pseudo mouse interrupt generation, the designated coordinate information is converted into the coordinate change information. And information processing means for converting the converted coordinate change information into an input and processing the input information as coordinate change information generated from the mouse input means.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a system block diagram showing an outline of an embodiment of the present invention. A central processing unit (CPU) 1 processes information according to an application program. In this application program, a mouse driver 2 and a mouse interface 3 are basically provided so that mouse input by a mouse 4 is possible. It is provided. As is well known, the mouse 4 rotates a rotating sphere on a disk to generate an X-direction coordinate change amount and a Y-direction coordinate change amount according to the rotation amount of the sphere, and to generate these coordinate change amounts. It outputs as vector coordinates of the mouse, and the mouse driver 2 takes in this via the interface 3.

On the other hand, a pen 5 for pointing coordinates is additionally provided, and the X and Y coordinates by the pointing operation of the pen 5 are sent to the application side via the interface 6.
That is, it is taken in by the CPU 1 side.

In response to a pen input operation, the pseudo mouse interrupt generation unit 7 issues a command to the CPU 7 so as to acquire the designated coordinates by the pen 5 at that time, and C by the command is generated.
The acquired coordinates from the PU 7 are stored and saved in the memory 9, and a pseudo mouse interrupt is generated.

FIG. 2 is a flow chart showing the functions of the pseudo mouse interrupt generation section 7 together with the related functions of the CPU 1. Referring to FIG. 2, the CPU 1 constantly monitors the presence or absence of a pen operation (step 11), and if there is a pen operation, generates a pen interrupt and supplies it to the pseudo mouse generation unit 7 (step 12).

Upon receiving this pen interrupt, the pseudo mouse generating section 7 obtains the latest coordinate value currently pointed to by the pen 5 from the CPU 1.
Is instructed to be acquired (step 71) and the acquired coordinate values are stored in the memory 9 (step 72). After that, a mouse interrupt is artificially generated (step 73) and supplied to the CPU 1. Then, the standby operation is continued until the next interruption by the pen operation (loop operation).

Referring again to FIG. 1, the pseudo mouse interrupt generated by the pseudo mouse interrupt generation unit 7 is the CPU.
In response to this mouse interrupt, the CPU 1 instructs the mouse driver 2 to acquire the mouse coordinate information of the mouse 4 although the input is made to 1. In response to this, the pen coordinate / mouse vector coordinate conversion unit 8 operates.

The coordinate conversion unit 8 hooks a command for acquiring mouse coordinate information via the interface 3 by the mouse driver 2, reads the pen input coordinates stored in the memory 9, and converts them into mouse vector coordinates. To do. The mouse vector coordinates after this conversion are driver 2
Return to.

FIG. 5 is a flow chart showing the function of the coordinate conversion unit 8 together with the mouse driver 2. Referring to FIG. 5, the mouse coordinate acquisition I / O command from the mouse driver 2 to the mouse interface 3 is hooked (step 81), and the latest pen coordinates stored in the memory 9 and the immediately preceding one are read (step 81). 8
2). Mouse vector coordinates are calculated based on the pen coordinates thus read and converted into mouse vector coordinates (step 83).

After conversion, the latest pen coordinates are returned to the memory 9 and stored as the previous coordinates until the next pen interrupt (step 84). Then, the converted mouse vector coordinates are returned to the mouse driver 2 (step 85).

The details of the operation of the pseudo mouse interrupt generation unit 7 having the above-described structure will be described in accordance with the operation flowchart of FIG. In this case, the operator, as shown in FIG.
Move the pen 5 from coordinates (X, Y) = (0,0) to (X, Y) =
The description will be given assuming that it is moved to (6, 6).

In response to the operator's operation of instructing the coordinates (6, 6) of the pen 5, the CPU 1 generates a pen interrupt (see steps 11 and 12 in FIG. 2) and supplies it to the pseudo mouse interrupt generator 7. . Upon receiving the pen interrupt, the pseudo mouse generating unit 7 generates an X coordinate reading command (step 701) C
Output to PU1. The CPU 1 receives the command and receives the pen 5
The present designated X coordinate value "6" is read and passed to the pseudo mouse interrupt generation unit 7.

Upon receiving this X coordinate value "6", the pseudo mouse interrupt generation unit 7 (step 702) outputs this value "6" to R.
The data is stored in the address (0000) in AM9 (step 703). Next, the pseudo mouse interrupt generation unit 7 generates a Y coordinate reading command (step 704) and outputs it to the CPU 1. The CPU 1 receives this instruction and gives the current instruction Y of the pen 5.
The coordinate value "6" is read and passed to the pseudo mouse interrupt generation unit 7.

Upon receiving the Y coordinate value "6", the pseudo mouse interrupt generation unit 7 receives the value "6" in R (step 705).
The data is stored in the address (0001) in AM9 (step 706). Thereafter, a pseudo mouse interrupt is issued (step 707) and is supplied to the CPU 1 to end the operation.

As this pseudo mouse interrupt code, the same code as the original mouse interrupt code is used, but in order to show that it is pseudo, for example, a flag is added to the most significant bit of the code and "1" is set to this. It can be set as a flag. When the CPU 1 receives the pseudo mouse interrupt code, it gives a mouse vector coordinate reading instruction to the mouse driver 2, and the mouse driver 2 generates a mouse vector coordinate reading instruction to the interface 3. At this time, since the flag indicating that the mouse interrupt is a pseudo one is "1", the pen coordinate / mouse vector coordinate conversion unit 8 in FIG. (interface)
The hook is performed, and the coordinate conversion process is performed according to the detailed process procedure shown in FIGS. 6 and 7.

Referring to FIG. 6, the mouse driver 2 I
When the / O hook is made (step 801), the pen coordinate / mouse vector coordinate conversion unit 8 causes the address (00
00), the latest X coordinate value X1 = "6" of the pen is extracted (step 802), and the X coordinate value X2 of the immediately previous pen is X2 =
"0" is fetched from the address (0002) of the RAM 9 (step 803).

Then, X1-X2 = 6-0 = 6 is calculated (step 804), and the result is set as the X vector coordinate value of the mouse = 6. The current X coordinate value "6" of the pen is written in the address (0002) of the RAM 9 as the immediately previous X coordinate value to be used (step 805). Finally, the X vector coordinate of the mouse is returned to the mouse driver 2 (step 806).

Next, referring to FIG. 7, the mouse driver 2
When the I / O hook is performed (step 807), the pen coordinate / mouse vector coordinate conversion unit 8 retrieves the latest Y coordinate value Y1 = "6" of the pen from the address (0001) of the RAM 9 (step 808). Then, the Y coordinate value Y2 = "0" of the immediately preceding pen is fetched from the address (0003) of the RAM 9 (step 809).

Then, Y1-Y2 = 6-0 = 6 is calculated (step 810), and the result is set as the Y vector coordinate value of the mouse = 6. The current Y coordinate value "6" of the pen is written in the address (0003) of the RAM 9 as the previous Y coordinate value to be used next (step 811). Finally, the Y vector coordinate of the mouse is returned to the mouse driver 2 (step 812).

[0026]

As described above, according to the present invention, the pen pointing coordinate is read in response to the pen coordinate pointing operation to generate a pseudo mouse interrupt, and the mouse driver responds to the pseudo mouse interrupt by the mouse driver. When issuing a reading instruction for the vector coordinates to the mouse I / O, the mouse I / O is hooked to convert the previously read pen pointing coordinates into mouse vector coordinates and return them to the mouse driver. Therefore, there is an effect that even in an application program that does not support pen input, pen input operation can be performed without changing the mouse driver.

[Brief description of drawings]

FIG. 1 is a system block diagram showing the concept of an embodiment of the present invention.

FIG. 2 is a functional flowchart showing the relationship between the pseudo mouse interrupt generation unit 7 of FIG. 1 and the CPU 1.

FIG. 3 is a diagram showing an example of a pen operation for explaining the operation of the embodiment of the present invention.

FIG. 4 is a flowchart showing the details of the operation of the pseudo mouse interrupt generation unit 7.

FIG. 5 is a pen coordinate / mouse vector coordinate conversion unit 8 in FIG.
It is a functional flowchart of.

FIG. 6 is a flowchart showing details of an X coordinate conversion process of a pen coordinate / mouse vector coordinate conversion unit 8.

FIG. 7 is a flowchart showing details of Y coordinate conversion processing of a pen coordinate / mouse vector coordinate conversion unit 8.

[Explanation of symbols]

 1 CPU 2 Mouse Driver 3, 6 Interface (I / O) 4 Mouse 5 Pen 7 Pseudo Mouse Interrupt Generation Unit 8 Pen Coordinate / Mouse Vector Coordinate Conversion Unit 9 Memory (RAM)

Claims (2)

[Claims] 1. A mouse input means for generating coordinate change information according to a rotation amount of a rotating body, and a coordinate pointing pen input means,
In response to the operation of the pen input means, pseudo mouse interrupt generating means for reading the designated coordinate information at that time to generate a pseudo mouse interrupt, and in response to the pseudo mouse interrupt generation, the designated coordinate information is converted into the coordinate change information. A position information input system comprising: an information converting means for converting into the coordinate conversion information; and a processing means for receiving the converted coordinate change information as an input and processing the input information as coordinate change information generated from the mouse input means. . 2. The position information input system according to claim 1, wherein the information converting means calculates a difference between the latest designated coordinate information and the immediately preceding designated coordinate information and uses it as the coordinate change information.