JPS63113721A - Mouse/tablet common control device - Google Patents

Abstract

PURPOSE:To simplify both hardware and software structures and to ensure the effective graphic input processing with high accuracy in response to the types of patterns, by controlling a mouse and a tablet with a single common controller and at the same time executing the interface control to a common application program. CONSTITUTION:When a pattern is inputted by using a tablet 13, a tablet interruption processing part 111 reads the state change of a tablet by the interruption for reception of data applied from a circuit and obtains the cursor coordinates based on the data on the read state change to supply it to a common processing part 113 together with the data on other state changes. When a graphic is inputted by using a mouse 14, a mouse interruption processing part 112 gives the timer interruption to the mouse 14 to read periodically the state change and obtains the cursor coordinates based on the read coordinate data to supply it to the part 113 together with the data on other state changes. The part 113 performs the subsequent common processes and the interface control to an application program 12.

Description

[Detailed Description of the Invention] [Summary] In a mouse and tablet control device for a graphics processing system that connects a mouse and a tablet to input graphics,
The mouse and tablet are controlled by a separate common control device, as well as the interface to a common application program. As a result, the hardware and software can be integrated into a hour wheel, and the graphic input process can be performed efficiently and accurately in accordance with the type of graphic.

[Industrial application field]

The present invention provides a graphics processing system that connects a mouse and a tablet to input graphics.
This invention relates to a mouse/tablet common control device that has been improved so that it can be commonly controlled by separate control devices.

[Conventional technology]

In graphic processing systems, a mouse or tablet is often used when inputting figures including characters into a computer.

A mouse takes the form of a small moving box with metal wheels on two orthogonal axes, each wheel having a shaft encoder attached to it. When the mouse is moved by hand, the wheels on each axis rotate, and each shaft encoder generates a pulse proportional to the amount of movement in the orthogonal direction, and the relative amount of movement is recorded in a motion counter.

Furthermore, a plurality of buttons (usually two) are provided at the top of the mouse, and can be operated with fingers while moving the mouse. The state of each button being pressed and released is set in a state register provided within the mouse.

The tablet has a two-dimensional plane shape, and each position on the plane corresponds one-to-one to the CRT display screen.

When you press the tablet surface with the pen (pen down), the X and Y coordinate position detector installed in the tablet notifies the computer's control device of the absolute X and Y coordinates of the position where the pen was down. Ru. By moving the pen, you can input arbitrary drawings and characters.

Although the mouse has a simple configuration and is inexpensive, it is difficult to input graphics with high precision. On the other hand, tablets have a complicated structure and are expensive, but they allow highly accurate graphic input.

For this reason, it is convenient to use a mouse when inputting large shapes that do not require much precision, but when it comes to drawing and inputting characters (especially small characters) that require precision,
Using a mouse is not accurate, so it is recommended to use a tablet.

On the other hand, there are various shapes that can be input into a calculator.
There are also high and low levels of required accuracy.

Therefore, when inputting figures into a computer, a figure processing system that can use both a mouse and a tablet is used, and figures are input using either the mouse or the tablet as necessary.

FIG. 4 explains the principle of a conventional mouse/tablet control system in which graphic input is performed by connecting a mouse and a tablet.

In FIG. 4, 20 is a calculator such as a personal computer, 21 is a tablet control device, 22 is a mouse control device, 23 is a tablet-specific application program such as a floppy disk, 24 is a mouse-specific application program such as a floppy disk, and 25
is tablet left, 26 is pen, 27 is mouse, 28 and 2
9 is a button.

The tablet 25 outputs coordinate data of the pen 26 on the tablet in absolute coordinates, and also outputs data indicating the state of the pen 26, that is, the pen amplifier and pen down. When the state of the pen 26 changes, such as when the value of the pen coordinates changes or when the pen is moved up or down, the data is transferred to the tablet control device 2.
jJl is known.

The mouse 27 has an internal motion counter and a status register (not shown), the motion counter is set with the relative movement amount of the mouse, and the status register is set with whether the buttons 28 and 29 are pressed or released. The state of is cent.

Changes in the state of the mouse 27, such as changes in the amount of movement of the mouse 27 and changes in the state of buttons, are always output and set in the motion counter and state register.

As described above, the tablet 25 and the mouse 27 have different characteristics in the following points when viewed from the control device side.

(2) The tablet 25 outputs the pen coordinate data on the tablet in absolute coordinate values, whereas the mouse 27 outputs the relative movement amount of the mouse 27.

■ The tablet 25 notifies you of the up or down status of the pen 26, while the mouse 27 notifies you of the up or down status of the pen 26.
The pressed or released states of buttons 28 and 29 are output.

(2) When the pen coordinates, pen up or pen down status changes, the tablet 25 notifies the user of data indicating the status change.

Therefore, the tablet control device reads state changes by interrupting data reception from the line.

On the other hand, the mouse 27 always outputs the relative movement amount of the mouse 27 and the state of button presses and releases.

Accordingly, the mouse control device performs timer interrupts to periodically read state changes.

Because of the above-mentioned differences, conventionally, a tablet-specific control device 21, a tablet-specific application program 23, a mouse-specific control device 23, and a mouse-specific application program 24 are provided independently, and the tablet 25 and The mouse 27 was controlled to be connected to the computer 20.

[Problem that the invention seeks to solve]

When inputting graphics into a computer by connecting a mouse and a tablet, the characteristics of the two are different, so conventionally, control devices and application programs for the mouse and tablet left were provided independently, as described above.

Therefore, there is a problem in that the amount of hardware and software of the control device increases, and the cost of the control device and the entire system increases.

Furthermore, when a mouse and a tablet are used at the same time, the software must be changed depending on whether the mouse is used or the tablet is used, so there is a problem that the efficiency of graphic input processing decreases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mouse/tablet common control device which is improved so that a mouse and a tablet can be commonly controlled by one control device, and the interface for application programs can also be made common.

[Means for solving problems]

First, the principle of the present invention will be explained. When looking at the tablet and mouse from the control device side, as mentioned above, ■～■
There is a difference in the following points. Therefore, by absorbing these differences in the control device, it is possible to make the mouse and tablet appear the same to the application program, and it is possible to standardize the interface.

When there are the above-mentioned differences (1) to (2), the following two points are the specific differences between the mouse and the tablet that the control device is aware of.

(i) Interrupt processing In the case of a mouse, a timer interrupt is generated from the control device side and periodically sampled to read changes in the state, but in the case of a tablet, data is notified when the state changes, so the line Status changes are read by data reception interrupt from .

(ii) Calculating cursor coordinates In the case of a mouse, new I) cursor coordinates can be obtained by adding the mouse movement amount to the current cursor coordinates and clipping it to the CRT display screen size, whereas in the case of a tablet Since there is a discrepancy between the coordinate system of the tablet and the coordinate system of the display screen, it is necessary to map the coordinate system of the tablet to the coordinate system of the display screen to obtain the cursor coordinates.

Processing other than (i) and (ii), that is, processing after converting the coordinates read from the mouse and tablet into cursor coordinates, such as cursor display, application software interface, etc., are common to the mouse and tablet.

Therefore, if only the above-mentioned processes (i) and (ii) are performed separately for the mouse and tablet, and the other processes are shared, it is possible to commonly control the mouse and tablet with one control device. At the same time, it is possible to standardize the interface for application programs.

The present invention has been made based on the above principle, and the solution adopted by the present invention will be explained below with reference to FIG. FIG. 1 is a block diagram showing the basic configuration of the present invention.

In FIG. 1, IO is a computer, 11 is a common control device for the mouse and tablet left, 12 is an application program, 13 is a tablet, and 14 is a mouse.

In the common control device 11, reference numeral 111 denotes a tablet left interrupt processing unit that reads the state change of the tablet left by a data reception interrupt from the tablet line, and calculates the cursor coordinates based on the read state change data.

Reference numeral 112 denotes a mouse interrupt processing unit which issues a timer interrupt to the mouse 14, periodically reads state changes, and calculates cursor coordinates based on the read state change data.

113 is a common processing unit, which is a tab left interrupt processing unit 11;
1 or the mouse interrupt processing unit 112 receives data on cursor coordinates and other state changes, and performs subsequent common control processing and an interface with the common application program 12 jM? Do II.

[For production]

When inputting figures using the tablet 13,
The tablet interrupt processing unit 111 reads the status change of the tablet by a data reception interrupt from the line, calculates the cursor coordinates based on the read status change data, and sends it to the common processing unit 1 along with other status change data.
13.

When graphic input is performed using the mouse 14, the mouse interrupt processing unit 112 issues a timer interrupt to the mouse 14, periodically reads changes in state, calculates cursor coordinates based on the read coordinate data, and performs other operations. It is supplied to the common processing unit 113 together with the data on the state change.

The common processing unit 113 is a tablet interrupt processing unit 111
Alternatively, when cursor coordinate data and other status data are input from the mouse interrupt processing unit 112, subsequent common processing and interface control with the application software 12 are performed.

By doing the above, the tablet 13 and the mouse 14 can be commonly controlled by one common control device 11, and the interface to the application program 12 can also be made common. Therefore,
As for application programs, it is no longer necessary to provide separate application programs for the mouse and tablet as in the past, and one application program can be shared by both, simplifying the hardware and software. .

Furthermore, there is no need to change the application program when using a mouse or a tablet, making operation easier, increasing the efficiency of figure input processing, and enabling accurate figure input processing depending on the type of figure. It can be done.

〔Example〕

An embodiment of the present invention will be explained with reference to FIGS. 2 and 3. FIG. 2 is an explanatory diagram of the configuration of an embodiment of the present invention, and FIG.
The figure is an explanatory diagram of the cursor coordinate calculation method of the tablet interrupt processing section.

(A) Configuration of the embodiment In FIG. 2, a computer 10, a common control device 11, a tablet interrupt processing section 111, a mouse interrupt processing section 1
12, the common processing unit 113, the application program 12, the tablet 13, and the mouse 14 are
This is as explained in the figure. 131 is a pen of the tablet 13, and 141 and 142 are operation buttons provided on the mouse 14.

In the tablet left interrupt processing unit 111, reference numeral 11a denotes an interrupt processing unit that reads changes in the status of the tablet 13 by interrupting data reception from the line. A cursor coordinate calculation unit 1llb calculates cursor coordinates based on data read by the interrupt processing unit 111a.

In the mouse interrupt processing unit 112, an interrupt processing unit 112a performs a timer interrupt to the mouse 14 and reads changes in the state of the mouse 14. 112b
is a cursor coordinate calculation unit that calculates cursor coordinates based on the data read by the interrupt processing unit 112a.

In the common processing unit 113, 113a is a parameter table in which cursor addresses, button states, etc. are stored.

The pen down and pen amplifier states on the tablet 13 are treated as button press and release states on a mouse.

113b is a cursor display section, and a parameter table 113
a, and performs cursor display control based on the cursor address and button state data.

113C is an application program interface unit that controls the interface between the application program 12 and the common control device 10 and transfers data regarding cursor coordinates and button states.

(B) Operation of the Embodiment First, when inputting a figure using the mouse 14, as in the conventional case, move the mouse 14 by hand while operating the buttons 141 and 142 to draw the desired figure. The relative movement amount in two orthogonal axes directions is set in a motion counter (not shown), and each button 141 and 1
The status of 42 is set in a status register (not shown).

The interrupt processing unit 112a issues a timer interrupt to the mouse 14, periodically samples and reads motion counter data, that is, data on the relative movement amount of the mouse 14 and status register data, and uses the read data to calculate cursor coordinates. 112b.

The cursor coordinate calculation unit 112b calculates new cursor coordinates by adding the relative movement amount of the mouse 14 manually input to the stored current cursor coordinates. The current cursor coordinates are updated and stored with the calculated new cursor coordinates.

The obtained new cursor coordinate data and button state data are sent to the parameter table 113a, and their contents are updated. The cursor coordinate data is stored as a cursor address and its contents are updated.

The cursor display section 113b is displayed in the parameter table 113a.
, a cursor is displayed on a CRT (not shown) based on data such as cursor coordinates and button status.

The updated contents of the parameter table 113a are controlled by the application interface unit 113c and transferred to the application program 12.

Next, when inputting a figure using the tablet 13, when a desired figure is drawn on the tablet surface with the pen 131, the absolute coordinate data in the X and Y axis directions on the tablet surface and the pen When the state of the tablet changes, the interrupt processing unit 111a of the tablet is notified.

The interrupt processing unit 112a reads coordinate data of the tablet 13 and data regarding the state of the pen in response to a line interruption from the tablet 13, and sends the data to the cursor coordinate calculation unit 111b.

The cursor coordinate calculation unit 111b calculates cursor coordinates based on manually entered tablet coordinate data. Since there is generally a shift or drift between the coordinate systems of the display screen of the tablet 1-13 and the CRT, it is necessary to calculate the cursor coordinates by mapping the coordinate system of the tablet to the coordinate system of the display screen.

An example of a cursor coordinate calculation method will be described below with reference to FIG. In Figure 3, PQR5 is the tablet surface (P is the origin), ABCD is the CRT display screen (
A is the origin). The coordinate systems of the tablet left surface and the display screen have the following differences.

■ The origin A of the display screen is at the upper left, whereas the origin P of the riblet surface is at the lower left.

■ The resolution of the display screen is 640 x 400 dots, while the resolution of the tablet left is approximately 1600 x 1500.
It is dot.

(2) The tablet causes a deviation (drift) between the pen position and the coordinates as shown in FIG.

That is, when the pen is moved straight in the horizontal direction, the notified coordinates shift or drift in the Y direction as shown in the figure, even though the pen is not moved in the vertical direction.

When the pen is moved straight in the vertical direction, a shift occurs in the coordinates in the horizontal direction (X direction), that is, a drift occurs as shown in the figure.

In the case of Figure 3, using the following conversion formula, the tuple) 13
The coordinate data (x, y) notified from is converted into cursor coordinates (Cu rX, Cu rY) on the display screen.

X=x-Ox y=oy-y where, X: X coordinate notified from the tablet, y: Y coordinate notified from the tablet, OX: X direction offset of the display screen coordinate system with respect to the tablet coordinate system, Oy: Y of display screen coordinate system relative to tablet coordinate system
Direction offset, CurX: Cursor X coordinate, CurY: Cursor Y coordinate, PTx: Tablet pitch in the X direction, PTx: Pitch in the Y direction of the tablet, Pll: Pitch in the X direction of the display screen, Pay: Pinch in the Y direction of the display screen, DX: Tablet X-direction drift; D: Tablet Y-direction drift.

The new cursor coordinate data and pen state data obtained as described above are sent to the parameter table 113a, and their contents are updated.

Thereafter, cursor display control processing is performed in the cursor display section 113b in the same manner as when the mouse 13 is used, and processing is performed to transfer the contents of the parameter table 113a to the application program 12 via the application interface section 113c.

〔Effect of the invention〕

As explained above, according to the present invention, the following effects can be obtained.

(a) A single common control device can commonly control the mouse and tablet left, and the interface for application programs can be shared.

(b) Since only one control device and application program are required for the mouse and tablet, hardware and software can be simplified.

(c) There is no need to change the application program depending on whether you are using a mouse or a tablet, making operation easier and improving the efficiency of figure input processing. Accurate graphic input processing can be performed.

[Brief explanation of the drawing]

Fig. 1...Explanatory diagram of the basic configuration of the present invention, Fig. 2...
An explanatory diagram of the configuration of an embodiment of the present invention, FIG. 3: An explanatory diagram of the cursor coordinate calculation method of the tablet interrupt processing section of the same embodiment, FIG. 4: Explanation of the conventional mouse/tablet control method figure. In FIGS. 1 and 2, 10...computer, 11...common control device, 12...
-Application program, 13...tablet, 14...mouse, 111...tablet interrupt processing section, 112...mouse interrupt processing section, 113.
...Common processing section. Patent applicant Fujitsu Ltd./1-Issuing-”
I'tn$, l-Special Figure 1

Claims (1)

[Claims] In a graphics processing system that connects a tablet (13) and a mouse (14) to input graphics, the mouse (13) and tablet (14) are controlled by one unit, and the application program (12) is A mouse/tablet common control device (11) that performs interface control, comprising: (a) reading the state change of the tablet (13) by data reception interrupt from the tablet line, and adjusting the cursor coordinates based on the data of the state change; (b) a mouse interrupt that issues a timer interrupt to the mouse (14), periodically reads state changes, and calculates cursor coordinates based on the state change data; Processing unit (11
2) and (c) the tablet interrupt processing unit (111) or the mouse interrupt processing unit (112) receives data on cursor coordinates and other state changes, and performs subsequent common control processing and the common application program (12). ) A common processing unit (113) that performs interface control with a mouse/tablet common control device.