JP3469912B2 - Touch panel input device and input method capable of multiple simultaneous inputs - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a data display device for a control panel.
The image display device (4) such as (4) relates to a touch panel input device in which a matrix type transparent touch panel is arranged on the display screen.

[0002]

2. Description of the Related Art Meters, numerical indicators, and various switch groups for instructing and controlling at all times or in an emergency are used for centralized control of factory or plant processes and physical distribution. In recent years, in order to perform finer management and control, a data display for a control panel with a touch panel that can give instructions by touch operation on a display screen is widely used.

Conventionally, such data display devices have been
Touch panel input device allows simultaneous input of 2 switches
Has become. For simultaneous input of two or more switches
For example, there are the following cases. Incorrect on emergency stop switch
Contact the line, the line will stop, causing enormous damage.
However, such incorrect input may cause serious results.
In the case of data entry that may cause
Protective function is required and simultaneous switch input is used.

Data display for operation panel with touch panel
Is used for various purposes, but for two events A and B
Are correlated, and each event occurs independently and at the same time.
It is necessary to change the processing contents for events A and B depending on the case.
Used when there is a need. To give a specific example, the same product
Continuously flow on the two lines A and B that make the product
Both A and B are normal during the sampling inspection of the products
If there is no abnormality, check the A line if only A is abnormal.
Give instructions, if only B is abnormal, give instructions for B line inspection
If abnormalities occur at the same time as A and B, check the raw materials
In some cases, such as giving instructions to start with
However, if you can press A and B at the same time, you can do it easily. Well
Also, even if you move the cursor diagonally, the top and bottom, left and right
It is extremely difficult to use when moved together, so switch A,
Simultaneous pressing of B is desired.

[0005]

The present invention is to provide a multiple of the conventional Sui
Switch for simultaneous input, the switch simply collects coordinate data.
And the data of the pressed switch is registered in advance.
Existing coordinate data and simply compare
If so, the switch was determined to be ON.

However, in order to use for the above purposes,
It must be possible to input simultaneously and stably. As described above, the conventional method of directly recognizing the pressed switch cannot provide the above-mentioned serious function, and has a problem that it is difficult to operate even in other simple applications. . To be more specific, the switch next to
If touched at the same time, one switch input
Mistakenly interpreted as a touch input or multiple switch input
Either processed or treated as an error
Is difficult to use or cannot be used for serious applications
There was a face to say. Especially on the touch panel, physically
The border of the switch with the next is not clear, and the normal key
Since there is no play in the stroke like the board, the adjacent switch
Accidental contact with the chi is very likely to occur. The present invention has the above problems
If two or more switches are pressed, the switch
Touch panel input device that can correctly recognize input from
Is provided.

[0007]

Means for Solving the Problems Touch panel input of the present invention
The device consists of multiple X-axis lines arranged in a matrix.
And a touch panel having a Y-axis line,
For each intersection, the X-axis and Y-axis coordinates of the intersection
And a coordinate data including binary data indicating the separation of the intersection point.
Touch panel input device that creates
Is input with coordinate data related to some intersections,
X-axis projection coordinate data obtained by projecting this coordinate data on the X-axis
And the Y-axis projection coordinate data projected on the Y-axis.
Obtained from the shadow data creating means and the projection data creating means
Change point where binary data changes from detected projection data
The continuous data showing the pushing condition of the intersection
Data group is included in each of the coordinate data after division.
It is possible to divide the coordinate data input to the shadow data creation means.
A division possibility determining means for determining whether or not there is a division possibility
When it is judged by the judgment means that the image can be divided, the projection
Split to split the coordinate data input to the data creation means
And a coordinate data creating means.
Furthermore, the touch panel input device of the present invention has the above-mentioned configuration.
In addition, in the calculation of the continuous coordinate data group showing the pressed state
A pushing point coordinate calculating means for obtaining the center coordinates of the is provided.

[0008]

Operation: When the touch panel (1) is pressed, the switch detection unit (3) of the touch panel interface detects the switch input, and the microprocessor (referred to as MPU (5)) takes in the data of all the switches. Touch panel (1)
The coordinate data is stored as coordinate data, and the coordinate data is projected on the X axis and the Y axis to obtain projection data.
Whether or not the coordinate data can be divided is determined by detecting the presence / absence of a division point in the data group of the projection data and the coordinates of the division point. If it is possible, the coordinate data is divided and divided coordinate data is created. If it is impossible, it is determined that one switch is pressed.

When it is possible to divide, the projection data is obtained again from the divided coordinate data, and it is judged whether further division is possible based on the projection data. When it is impossible to divide again, it is judged that two switches are pressed simultaneously. If the data can be subdivided and the simultaneous pressing of up to two switches is allowed, it is determined that this data is invalid.

When 3 or more switches are allowed, the divided coordinate data is further divided to obtain new divided coordinate data. With respect to the divided coordinate data, projection data is obtained, and it is determined whether further division is possible. If not possible, it is determined that the three switches are simultaneously pressed. 3 if it is divisible
When the simultaneous pressing of the switches is allowed, it is determined that this data is invalid. After that, the same procedure is repeated to identify multiple simultaneous inputs. The pressed point coordinates of the identified switch are calculated. The pressed point coordinates of the identified switch are calculated.

[0011]

The touch panel input device of the present invention has the above-mentioned structure.
Create the projection data from the coordinate data and
The data can be used to determine whether the coordinate data can be divided as described above.
Input to multiple switches simultaneously by disconnecting
Even if the number of switches entered based on the number of divisions
You can judge the number. Also, in the coordinate data
For each data group, a continuous data group showing the pressed state
Since it can be reliably recognized, it can be input to multiple switches at the same time.
Input using the recognized data group,
Itches can be identified. In the present invention, rather than as it recognizes the switch coordinates as the conventional method, since the center coordinates of the calculated successive group of coordinate data indicating the pressing state is made to correspond to the switch, the switch size By appropriately selecting the height, it is possible to significantly suppress the occurrence of malfunction due to contact with a switch in the vicinity, as will be described later, and to add the above-mentioned serious function. Figure 1
As shown in 2, in the case where the square switches SW and SW1 each having a size of 8 squares are arranged close to each other,
Explain easily. Each switch is a group of small switches with one side being one size. For simplification of description, the distance between the switches SW and SW1 is ignored. In FIG.
BD is a touch switch area of the switch SW, and AR
Will be described later, the maximum area that can be pressed as the switch SW when the present invention is used, CT0 is the center point coordinates of the switch SW, and CT is the maximum area of the pressed point coordinates that can be recognized as the switch SW. It represents. Considering the case of pressing the central switch SW, the conventional method is SW
It was necessary to accurately press only the inside of the boundary BD. According to the present invention, the area of pressing the switch is
Assuming that the area of one square is one, by setting the limit of the push point coordinates from CT0 to CT, [Switch S
The area recognizable as "Press W" can be set from the minimum BD to the maximum AR. When the limit of push point coordinates is allowed up to the maximum AR, erroneous contact of about half the size of the switch is allowed, and the same effect as stroke play on the keyboard is exhibited, greatly reducing the occurrence of touch mistakes. Because it can be used, it has become possible to use it with confidence in serious applications.

[0012]

First Embodiment One embodiment of the present invention will be described in detail below with reference to the drawings. In FIG. 1, the touch panel (1) is in the form of a transparent sheet and is arranged on the display screen of the display unit (4) so that the X axis and the Y axis are 8 × 6.
It has a switch group composed of. When any one of the switches is pressed, the switch detection unit (3) transmits an interrupt signal to the microprocessor (5). The microprocessor (5) receives this and jumps to the interrupt processing routine. In the interrupt processing routine, it is called a parallel input / output interface [PIO (2)] for the X axis. ] Open collector output port of X using timer interrupt
The axis is scanned line by line, and each time the Y-axis output connected to the input port of PIO (2) is taken in, the data at each intersection is obtained. Since each line on the X-axis is an open collector output, the line is pulled to almost zero potential when it is active by scanning, and it is inactive and becomes high impedance when not being scanned.

On the other hand, each line on the Y-axis has a pull-up resistor.
Since it is pulled up in (7), the output of the Y-axis line is "1" when it is not pressed or when the intersection with the inactive X-axis line that is not scanned is pressed.
Then, when the switch at the intersection with the active X-axis line is pressed during scanning, it becomes "0". In this way, X
By scanning all the lines of the axis and reading the Y-axis line each time, the data of all the intersections of the negative logic are obtained with respect to the switch ON. (The hardware itself has been used in the past.) In this embodiment, the data of all the intersections are stored, and the scan number is the X- axis address, that is, the X coordinate , and the matrix The bit order of the Y-axis output data is the Y-axis address, that is, the Y coordinate ,
The depressed or released for each intersection "0", recognizes the coordinate data shown as a binary data of "1". After scanning all X-axes and taking in data, the process proceeds to the flow described below.

FIGS. 2 to 4 show the flow when the simultaneous input of up to two switches is permitted. In FIG. 2, the coordinate data acquisition unit (10) is a unit for acquiring and storing data of all switches through the above hardware. Empty data judgment unit
In (11), when there is no coordinate data indicating the pressed state, it is determined that the switch has not been pressed, and the switch-unpressed recording section (19) is skipped. 5 to 7 have two switches
(21) (22) An example when the button is pressed, an example of its X-axis and Y-axis projection, and division coordinates of the switches (21) and (22) are shown. Empty data judgment unit
When it is determined that there is data in (11), the process jumps to the X-axis projection data creation unit (12) and the coordinate data is projected onto the X-axis as shown in FIG. 5 to obtain X-axis projection data (23). .

In the X-axis division availability determination unit (13), the pressed state
There are a plurality of continuous data groups that indicate that it is possible to determine whether or not division is possible. In the judgment of division, in the case of positive logic, in the projection data (23), first find the change point from "1" to "0" which is the end of the first data group showing the pressed state , and then press
"0" to "1" which is the start of the second data group showing the status
It is done by finding the change point of. And
The division point is defined as the change point from "0" to "1". When it is possible to divide, as described above, the dividing point (in FIG. 5, A-
Shown by line A. ), And the division coordinate data creation part
Move to (14). The divided coordinate data creation unit (14) divides the coordinate data along the line AA, leaves the left data shown in FIG. 6, and clears the right data, and the right coordinate shown in FIG. The data is left, and the data on the left is divided into the divided coordinate data.

In the operation example shown in FIG. 5, the X axis can be divided. If the X axis cannot be divided, Y
The axis projection data creation unit (15) obtains Y axis projection data (24) shown in FIG. 5 from the coordinate data. Then, in the Y-axis split availability determination unit (16) and the Y-axis split coordinate data creation unit (17), determination of split availability is made in the same manner as in the case of the X-axis, and the split point if possible. Detect and create divided data. If there is data on both the X-axis and the Y-axis and it cannot be divided, it is judged that only one switch is input, and the push point coordinate calculation unit (18) determines the center of the data group consisting of multiple coordinates. Set the push point coordinates. Information of one switch and the coordinates of the push point is recorded by the one switch push recording unit (20), and the process proceeds to the next step, the push / pull determination unit (40) in FIG. If it is determined that the division is possible on either the X-axis or the Y-axis, FIG.
Then, the process proceeds to the 2-division determining unit (30).

In FIG. 3, it is confirmed whether the two divided coordinate data shown in FIGS. 6 and 7 can be redivided as follows. The projection data creation and the split availability determination are the same routines as the X-axis projection data creation unit (12) and the X-axis split availability determination unit (13), respectively, and only the input data is different. First, in the X-axis projection data creation unit (31) for the first divisional coordinate data, projection data is obtained for the X-axis, and the X-axis division possibility determination unit (32) determines whether the projection data can be subdivided. Is judged at.

If the X-axis division availability determination unit (32) determines that division is possible, it means that three or more switches have been pressed, so it is determined that the current coordinate data is incorrect, Without executing the processing, the program of the present invention is exited through the flow (38) and the process returns to the main routine. The same applies when it is determined that division is possible on the Y axis described later. If the X-axis split availability determination unit (32) cannot split the image, the same process is performed for the Y-axis. If the Y-axis cannot be divided, it is determined that the first divided coordinate data cannot be divided for both the X-axis and Y-axis projection data, that is, it is a single switch, and the push point coordinate calculation unit (35) At this point, the switch coordinates of the first divided coordinate data are determined.

The end determination unit (36) determines whether or not the above re-division check has been completed for all the divided coordinate data.
Since the second divided coordinate data has not been completed yet, the flow (39) is followed and the same determination as in the case of the first divided coordinate data is made for the second divided coordinate data. When it is judged that the two divided coordinate data cannot be re-divided, it is judged that the two switches have been pressed, the result is left in the two-switch press recording unit (37), and the next press-release determination unit. Move on to (40).

In FIG. 4, the switch number change comparing unit (41) compares the number of switches pressed last time with the number of switches pressed this time. For simplification of explanation, those with a switch pressed are turned on and those without a switch are turned off.
Express. When the number of ON switches increases this time, the ON confirmation section
Come to (42). The ON confirmation unit (42) determines whether or not there is a switch that was previously turned ON. This time the ON switch is O
When it is FF, the switch turned on this time is judged to be newly turned on by the ON switch determination unit (44) and recorded as the current ON coordinate. If there is a switch that was turned on last time, and the number has increased this time (when the maximum of 2 switches is turned on at the same time, it is limited to 1 switch to 2 switches ON), go to the ON switch determination unit (43). In this case, in the present embodiment, of the two newly turned on switches, the one farther from the previously turned on switch is determined to be correct and recorded as the current on coordinate.

In the switch number change comparing unit (41), when the ON switch is decreased, the program is turned OFF (4).
Move on to 5). The OFF confirmation part (45) is OFF this time
To see if. If it is OFF, in the OFF switch determination unit (47), all the switches that were turned ON last time are OF.
Recorded as F. If the number of ON switches this time is less than this time and it is not zero, that is, if 2 switches ON to 1 switch ON, the program is OFF.
Move to the switch determination section (46). In this case, in this embodiment,
Of the switches that were turned on last time, the one that is farther from the switch that was turned on this time is turned off. After passing through each of the determination units and the determination unit, the program moves to the previous data update unit (48).

If there is no change in the number of ON switches in the switch number change comparison unit (41), the previous data update unit is unprocessed.
Go to (48). The previous data update unit (48) rewrites the previous data with the current data to prepare for the next step. The above completes the entire sequence in the case where the simultaneous input of two switches according to the present invention is allowed. After that, the program returns to the main routine with a return instruction, and the switch processing section of the main routine refers to the record of the switch,
Perform processing that corresponds to the change in the switch.

[0023]

Second Embodiment Next, an embodiment in the case where the simultaneous input of three switches is allowed will be described. The basic operation of each part is
There is no difference from the first embodiment when the simultaneous input of two switches is allowed. In FIG. 8, the whole is outlined, and the same division confirmation unit (9) as in the first embodiment and the two division determination unit (3) in the first embodiment are used.
X) divided coordinate data creation unit (68), Y
The multi-division confirming unit (60) shown in FIG. 9 only with the addition of the axis-division coordinate data creating unit (69) and the 2-switch recording unit (37) of the 2-division determining unit (30) of the first embodiment are 3-switch recording. The multi-division judging section (80) shown in FIG. 10 and the push-separation judging section (70) shown in FIG. 11 are replaced by the section (87).

The operation when three switches are turned on at the same time is the same as in the first embodiment from the start to the division confirmation section (9), the projection data can be divided and divided into two division coordinate data. Come to the split confirmation unit (60). Multi-division confirmation section
(60) has an X-axis divided coordinate data creation unit (68) and a Y-axis divided coordinate data creation unit (69) added to the portion that was determined to be invalid by the two-division determination unit (30) of the first embodiment. Therefore, when three switches are simultaneously input, either the X-axis split availability determination unit (62) or the Y-axis split availability determination unit (64) determines that splitting is possible, and splits the X-axis or Y-axis. The coordinate data creating unit (68) or (69) creates three pieces of divided coordinate data, and the multi-division judging unit (80) of FIG. 10 is almost the same as the two-division judging unit (30) of the first embodiment.

Three pieces of divided coordinate data are input, but 3
With simultaneous switch input, the X-axis and Y-axis split availability determination unit (8
Since it is not judged to be subdivision in 2) and (84), go to the push point coordinate calculation section (85), go to the 3 switch push recording section (87),
Then, the process proceeds to the push / pull determination unit (70) in FIG. The push / pull determination unit (70) compares each switch that has been determined to be ON this time with the previous state, and compares the switch that was previously ON with this state, using the corresponding switch change comparator (71). Recognize the changes in. When the corresponding switch change comparator (71) determines that it is ON, it is recorded in the ON switch recording unit (72), and when it is determined to be OFF, it is recorded in the OFF switch recording unit (73). After being recorded and if there was no change,
By the corresponding switch previous data update unit (75), the current data is stored as the previous data, and in preparation for the next time, all the processes of the present invention are completed, the main routine is returned, and the recording result is referred to in the main routine. Processing appropriate to the state of each switch is performed.

If four or more switches are turned on at the same time,
0 division division determination unit (80) X-axis or Y-axis division availability determination unit (8
In (2) or (84), it is determined that the division is possible and the invalid flow (88) is flowed, and no processing is performed. When only two switches are turned on at the same time, re-division is possible in either the X-axis division availability determination unit (62) or the Y-axis division availability determination unit (64) of the multi-division confirmation unit (60) in FIG. Without being judged, the switch coordinate is calculated by the push point coordinate calculation unit (65), the switch is recognized as two switches, the result is recorded by the two switch recording unit (67), and the flow goes to the push / pull determination unit (70). When only one switch is turned on, it is exactly the same as in the first embodiment and is processed in the division confirmation section (9). It goes without saying that simultaneous input of multiple switches such as 4 switches and 5 switches can be easily processed by only increasing the multi-division confirming section (60) in FIG.

The above description of the embodiments is for explaining the present invention and should not be construed as limiting the invention described in the claims or reducing the scope. The configuration of each part of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of the present input device.

FIG. 2 is a flowchart of a division confirmation unit.

FIG. 3 is a flowchart of a two-division determining unit.

FIG. 4 is a flowchart of a push / pull determination unit.

FIG. 5 is an example of coordinate data of 2-switch input.

6 is a first X-axis division coordinate diagram of the coordinate data of FIG.

FIG. 7 is a second X-axis division coordinate diagram of the coordinate data of FIG.

FIG. 8 is a software block diagram in the case of 3-switch input.

FIG. 9 is a flowchart of a multi-division confirming unit.

FIG. 10 is a flowchart of a multi-division determining unit.

FIG. 11 is a flowchart of a push / pull determination unit when there are multiple inputs.

FIG. 12 is an explanatory diagram of an effect of the invention.

[Explanation of symbols]

(1) Touch panel (9) Division confirmation part (12) X-axis projection data creation unit (13) X-axis division availability determination unit (18) Push point coordinate calculation unit (30) Two-division determination unit (40) Push-down determination unit (60) Multi-division confirmation section (80) Multi-division determination unit

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-2-39313 (JP, A) JP-A-60-156132 (JP, A) JP-A-4-322322 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G06F 3/03-3/033

Claims (4)

(57) [Claims] 1. A plurality of X axes arranged in a matrix.
Equipped with a touch panel with lines and Y-axis line,
For each intersection of the lines, the X-axis coordinate and Y of the intersection
A seat including axial coordinates and binary data indicating separation of the intersection
In the touch panel input device that creates standard data, when coordinate data related to all intersections or some intersections is input.
Both, the X-axis projection coordinates that projected this coordinate data on the X-axis
Creates data and Y-axis projected coordinate data projected on the Y-axis
A projection data generation means for, 2 from the projection data obtained from the projection data generating means
By detecting the change point where the value data changes,
A continuous data group showing the pressed state of points is
Data into the projection data creation means so that it is included in each
Determine if the applied coordinate data can be divided
If the division possibility determination means and the division possibility determination means determines that the division is possible.
Coordinate data input to the projection data creating means,
It has a divided coordinate data creation means to divide
Characteristic touch panel input device. 2. A plurality of X axes arranged in a matrix.
Equipped with a touch panel with lines and Y-axis line,
For each intersection of the lines, the X-axis coordinate and Y of the intersection
A seat including axial coordinates and binary data indicating separation of the intersection
In the touch panel input device that creates standard data, the coordinate data relating to all intersections or some intersections is projected on the X axis.
X-axis projection data creation hand that creates the X-axis projection coordinate data
And a change in binary data from the X-axis projection coordinate data
By detecting the points, it is possible to continuously indicate the pushing condition of the intersection.
Data group is included in each of the coordinate data after division.
As described above, it is determined whether the coordinate data can be divided.
The first division availability determination means and the first division availability determination means determine that the division is impossible.
The coordinate data is projected on the Y-axis, the Y-axis projection seat
Y-axis projection data creating means for creating standard data, and a change in which binary data changes from the Y-axis projection coordinate data
We're in it to detect the point, continuous showing a depressed state of the intersection
Data group is included in each of the coordinate data after division.
As described above, it is determined whether the coordinate data can be divided.
Second split availability determination means, the first split availability determination means, or the second split availability determination hand
If it is judged that it is possible to divide by the step,
Creating divided coordinate data by dividing and creating divided coordinate data
A touch panel input device characterized by comprising:
Place 3. A group of continuous coordinate data indicating a pressed state
The method according to claim 1 or 2, further comprising push point coordinate calculation means for obtaining a heart coordinate.
The touch panel input device according to claim 2. 4. A plurality of X axes arranged in a matrix.
Equipped with a touch panel with lines and Y-axis line,
For each intersection of the lines, the X-axis coordinate and Y of the intersection
A seat including axial coordinates and binary data indicating separation of the intersection
Switch identification of the touch panel input device that creates standard data
In another method, create X-axis projected coordinate data by projecting coordinate data on the X-axis.
First step and, change the binary data changes from the X-axis projection coordinate data
By detecting the points, it is possible to continuously indicate the pushing condition of the intersection.
Data group is included in each of the coordinate data after division.
As described above, it is determined whether the coordinate data can be divided.
If it is determined that the second step and the second step cannot be divided,
Create Y-axis projected coordinate data by projecting coordinate data onto the Y-axis
And the change of binary data from the Y-axis projected coordinate data
By detecting the points, it is possible to continuously indicate the pushing condition of the intersection.
Data group is included in each of the coordinate data after division.
As described above, it is determined whether the coordinate data can be divided.
It was judged that it was possible to divide by the fourth step and the second step or the fourth step.
In this case, the coordinate data is divided to create divided coordinate data.
Including the fifth step to perform the first to fifth steps for the coordinate data related to all intersections.
And the divided coordinate data obtained in the fifth step
By performing the first to fifth steps by
Based on the total number of divisions for the standard data, the input switch
A switch identification method characterized by determining the number of switches .