JPH02213924A - Coordinate input device - Google Patents

Abstract

PURPOSE:To reset a cursor mark to its original position by accumulating the 2-dimensional coordinate displacement data obtained by a 2-dimensional coordinate displacement data generating means and inputting the accumulated value of displacement with the positive and negative values of a code inverted with each other when the accumulated value of displacement exceeds a fixed level. CONSTITUTION:A coordinate input means 1 is prepared together with a coordi nate displacement data comparison means 3, a coordinate displacement data memory circuit 2, and a code inverted coordinate displacement data input means 4. Thus it is possible to set a cursor mark at its home position without using any special input operation for a graphic processor which performs the graphic processes by reference to the screens and various types of terminal equipments which carry out each job while selecting and pointing the menus displayed on the screens. Therefore, the cursor mark can be reset at a position set before the shift of the mark or at its home position in case the accumulated value of displacement of the 2-dimensional coordinates obtained by the means 1 exceeds a fixed level.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a coordinate input device in a graphic processing device.

(Prior Art) A graphic processing device that combines a coordinate input device such as a tablet, digitizer, or mouse with a display device such as a CRT display uses, for example, a stylus pen or a cursor to display data in response to hand movements on the coordinate input device. The cursor mark on the display screen is moved on the screen by a distance corresponding to the data value output from these coordinate input devices, based on the displacement data of the input coordinate point obtained and the movement amount data obtained from the movement of the mouse on the desk. I was letting it happen. Then, input various shapes according to the screen position of the cursor mark after moving, select the command menu assigned to that position, and execute the contents (this invention will solve the problem). However, with conventional devices of this type, when an attempt is made to return the cursor mark to the position before movement on the display screen or the basic position called the home position, the cursor mark is moved to the coordinate input area of the tablet or when the mouse is operated. On a desk, it is necessary to move the hand in the direction opposite to the direction of movement or in the direction of the home position by an amount corresponding to the amount of movement or the distance from the home position, resulting in a problem of poor operating efficiency. Furthermore, when the amount of displacement corresponding to the distance required for movement is large, operability is also compromised in terms of the amount of movement of the operator's hand. Particularly, in order to return the cursor mark from a position far away from the home position, the operator's hand movement has to be particularly large.

The present invention has been made in consideration of these circumstances, and an object of the present invention is to cumulatively calculate the amount of movement each time a movement amount input operation is performed using a coordinate input device (two-dimensional coordinate displacement data generation means). Then, when the cumulative amount of movement exceeds a preset value, that is, when the displacement from the home position is assumed to have become large, output data with the sign of that amount reversed. The present invention aims to provide a device that can return a cursor mark on a display screen to its previous position or home position.

(Means for Solving the Problems) In order to solve the above-mentioned problems, a coordinate input device provided by the present invention includes means for generating two-dimensional coordinate displacement data, and a coordinate input device generated by the two-dimensional coordinate displacement data generating means. a coordinate displacement data storage circuit that stores and stores the accumulated two-dimensional coordinate displacement data; and a coordinate displacement data storage circuit that stores and holds preset coordinate displacement reference data, and the coordinate displacement reference data and the coordinate displacement data storage circuit that cumulatively stores the coordinate displacement reference data. coordinate displacement data comparing means for comparing the magnitude with coordinate data and outputting an input instruction signal when the stored coordinate data becomes larger than the coordinate displacement reference data; Upon receiving the input instruction signal, the two-dimensional coordinate displacement data stored in the coordinate displacement data storage circuit is read out, the sign is inverted and input, and the two-dimensional coordinate displacement data stored in the coordinate displacement data storage circuit is read out. a sign-reversed coordinate displacement data input means to be erased; the coordinate displacement data outputted from the two-dimensional coordinate displacement data generation means; and the sign-reversed two-dimensional coordinate displacement data outputted from the sign-reversed coordinate displacement data input means. A coordinate conversion circuit that converts the display coordinates on the display device into displacements can be seen.

(Function) In the coordinate input device of the present invention, when the coordinate displacement data input by the operator becomes larger than a preset value, the previously input NWA displacement data is The coordinate displacement data stored in the storage circuit is input with its positive/negative sign inverted. Through this process, it is possible to obtain the coordinate displacement data necessary to return the cursor mark to the position before movement or the home position. Based on the obtained coordinate displacement data, the coordinate conversion circuit converts it into the amount of movement of the cursor mark on the display screen, and uses the converted value to return the cursor mark to the previous position or home position on the display screen. Even if the movement of the operator's hand in the two-dimensional coordinate displacement data generation means is a large amount of movement or a complicated movement path, the process of moving the hand to the previous position or home position on the screen You can give the cursor mark the amount of movement necessary to return it to . Therefore, by incorporating the coordinate input device of the present invention, a graphic processing device with high operability can be realized.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the coordinate input device of the present invention. Reference number 1 in the figure indicates coordinate input means (corresponding to the two-dimensional coordinate displacement data generation means described above);
3 represents a coordinate displacement data storage circuit, 3 represents a coordinate displacement data comparison means, 4 represents a sign-inverted coordinate displacement data input means, 5 represents a coordinate conversion circuit, and 6 represents a display section.

FIG. 2 is a diagram showing an operation for moving a cursor mark on a display screen using a conventional coordinate input device. The rectangular frame shown in Figure 2(a) represents the display screen, and the rectangular frame shown in Figure 2(b)
The rectangular frames shown in the figure each represent the coordinate input area of the coordinate input means or the operation space when using a mouse. Now, we will explain the case where the cursor mark is moved from Ml to M2 position on the display screen shown in FIG. 2(a). In order to move the cursor mark from M+ to Ml position, the coordinates The amount of coordinate displacement required on the input means is
Assume that there is a displacement expressed between point P1 and point 22 as shown in FIG. 2(b). At this time, if the position near M1 is where the main input operation is performed and the position M2 is a temporary operation position, it is desirable to return the cursor mark from M2 to the position Ml. In order to do this, it is necessary to provide a displacement amount whose absolute value is equal to the displacement between points P1 and 22, as represented by points Ps and P4, and whose direction of displacement is opposite, on the coordinate input area of the coordinate input means.

FIG. 3 is a diagram showing an operation for moving a cursor mark on a display screen using the coordinate input device of the present invention. Third
The rectangular frames shown in Figures (a) and (c)
The rectangular frame shown in Figures (b) and (d) is the coordinate input means 1.
Each represents a coordinate input area. Similar to the example explained using FIG. 2, after moving the cursor mark from M to M2 on the display screen shown in FIG. 3(a),
Similar to the example explained using Fig. 2, when the position near M is the place where the main input operation is performed and the position M2 is the temporary operation position, that is, the cursor mark has moved away from the home position. In order to move the cursor mark from Ml to M2 on the 0 display screen, use the steps shown in Figure 3(b) on the coordinate input area. It is necessary to give a displacement of 22 from Pl so that
Assuming that the position of point P+ is (x+, y+) and the position of point P2 is (x2.y2>), the displacements ΔX and Δy are as follows: ΔX=X2 X+ Δy=Vt Vl The displacements of ΔX and Δy are respectively To return the cursor mark from M2 to M when the value is larger than the preset value, reverse the positive and negative signs of the cursor mark currently located at M2 in the X direction and in the X direction, respectively. It is sufficient to give an operation expressed by a displacement of -ΔX and -Δy on the coordinate input area.

Furthermore, on the display screen shown in FIG. 3(c), from Ml to M
, after moving the cursor mark to the Ms position,
The case of returning the cursor mark from Ms to the position of Ms will be explained. This means that M is, for example, a command menu selection area, and M4 and Ms are operation areas related to the processing content of the command selected in the command menu selection area, and are far from the command menu selection area (home position). 4. To move the cursor mark from Ms to M via M on the 0 display screen, which corresponds to the situation where you want to return the cursor mark to the position of M3, which is considered the home position, after the processing with M @ is completed. As shown in FIG. 3(d), on the coordinate input area, it is necessary to give a displacement amount that is the sum of the displacement amount from P to P4 and the displacement amount from 24 to P5. The position of point Ps on the coordinate input area is <7Cs, ys), the position of point P4 is (X4.y4), and the 1st digit of point Ps is (Xs
r 7%), then the displacements △X and Δy that should be given are respectively Δ = (XI X4 ) + (X4 Xs ) = X
I Xs Δy= (ys 3'4) 10(y<'is
>"yl-3'j, and the displacement amounts ΔX and Δy are larger than the preset reference value of displacement data. To return the cursor mark from M to the position of M, move the cursor mark currently located at It suffices to apply operations on the coordinate input area to the mark, which are expressed by displacements of -ΔX and -Δy with opposite signs in the X direction and in the X direction, respectively.

The above functions will be explained in conjunction with the block diagram of FIG. 1.

The coordinate input means 1 outputs two-dimensional coordinate displacement data through a signal line 101. Specific implementation examples of the coordinate input means include a tablet and a mouse. When using a tablet, when the operator performs a coordinate input operation for two points within the coordinate input area, the displacement between the two points is output through the signal line 101. When a mouse is used, the distance the mouse is moved on the desk is output from the mouse as two-dimensional coordinate displacement data through the signal line 101. Signal 11101 has
Two types of information, ΔX and Δy, are output as signals as two-dimensional coordinate displacement data.

The coordinate displacement data storage circuit 2
Every time dimensional coordinate displacement data ΔX, Δy is input, the value is added to the value already stored and stored. The stored two-dimensional coordinate displacement data is converted into coordinate displacement through the signal line 102 It is output to the data comparison means 3 and also to the sign-inverted coordinate displacement data input means 4 through the signal line 104.

After obtaining the coordinate displacement data using the coordinate input means, the coordinate displacement data comparison means 3 reads out the two-dimensional coordinate displacement data stored and held in the coordinate displacement data storage circuit 2 through the signal line 102, and sets the data in advance. It is compared with the stored coordinate displacement reference data, and if the value of the two-dimensional coordinate displacement data is larger than the value of the coordinate displacement reference data, a sign-inverted coordinate data input instruction signal is sent through the signal line 103 to change the sign-inverted coordinate. The displacement data is outputted to the displacement data input means 4.

The sign-inverted coordinate displacement data input means 4 receives the sign-inverted coordinate data input instruction signal obtained through the signal line 103, reads out the two-dimensional coordinate displacement data from the coordinate displacement data storage circuit 2 through the signal line 104, and inputs the positive and negative signs. After being inverted, it is output to the coordinate conversion circuit 5 through the signal line 106. Furthermore, the sign-inverted coordinate displacement data input means 4 clears the contents of the coordinate displacement data stored in the coordinate displacement data storage circuit 3 to zero through the signal line 105.

The coordinate conversion circuit 5 converts the two-dimensional coordinate displacement data obtained through the signal lines 101 and 106 into a displacement amount on the display screen of the display unit 6, and converts the data into a displacement amount on the display screen of the display unit 6, and outputs a signal as a video signal for displaying a cursor mark on the display screen. Display unit 6 through line 107
Output to.

The display unit 6 outputs and displays the video signal output from the coordinate conversion circuit 5 as visual information in the form of a cursor mark on the display screen.

As explained above, according to the coordinate input device of this embodiment, in addition to the coordinate input means 1, the coordinate displacement data comparison means 3
By providing the coordinate displacement data storage circuit 2 and the sign-reversed coordinate displacement data input means 4, when the cumulative value of the two-dimensional coordinate displacement amount obtained by the coordinate input means 1 exceeds a certain value, the display screen Move the cursor mark on the previous position,
Or you can return it to the home position.

(Effects of the Invention) As explained above, according to the coordinate input device of the present invention,
The two-dimensional coordinate displacement data obtained by the two-dimensional coordinate displacement data generation means is accumulated and stored, and when the accumulated displacement amount exceeds a certain value, the sign of the value is reversed and input processing is performed. This makes it possible to return the cursor mark on screen -E to its original position. Therefore, it is especially important to position the cursor mark at the home position in graphic processing devices that perform graphic processing while looking at the screen, and in various terminal devices that proceed with work while selecting and instructing menus displayed on the screen. This can be achieved without performing any input operations, and is effective in improving operability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the invention of the present application, and FIG.
The figure shows the relationship between the movement of the cursor mark on the display screen and the input operation in a conventional coordinate input device, and FIG. 3 shows the movement of the cursor mark on the display screen in the embodiment shown in FIG. FIG. 3 is a diagram showing the relationship with input operations. DESCRIPTION OF SYMBOLS 1... Coordinate input means, 2... Coordinate displacement data storage circuit, 3... Coordinate displacement data comparison means, 4... Sign inversion coordinate displacement data input means, 5... Coordinate conversion circuit, .・Display section.

Claims (1)

[Claims] means for generating two-dimensional coordinate displacement data; a coordinate displacement data storage circuit for accumulating and storing the two-dimensional coordinate displacement data generated by the two-dimensional coordinate displacement data generating means;
Preset coordinate displacement reference data is stored and held, and the magnitude of the coordinate displacement reference data is compared with the coordinate data cumulatively stored in the coordinate displacement data storage circuit, and the cumulatively stored coordinate data is determined as the coordinate displacement standard. a coordinate displacement data comparing means for outputting an input instruction signal when the coordinate displacement data is larger than the coordinate displacement data comparing means; and two-dimensional coordinates stored in the coordinate displacement data storage circuit upon receiving the input instruction signal output from the coordinate displacement data comparing means. code-reversed coordinate displacement data input means for reading displacement data, inverting the sign thereof, and erasing the two-dimensional coordinate displacement data stored in the coordinate displacement data storage circuit; and the two-dimensional coordinate displacement data generating means. and a coordinate conversion circuit that converts the outputted coordinate displacement data and the sign-reversed two-dimensional coordinate displacement data outputted from the sign-reversed coordinate displacement data input means into display coordinate displacement on a display device. A coordinate input device characterized by: