JP7264615B2 - Touch panel device, control method for touch panel device, program, and storage medium for storing program - Google Patents

Description

The present invention relates to a touch panel device having a touch panel that outputs a signal corresponding to a position touched by an operator, a control method for the touch panel device, a program, and a storage medium that stores the program.

In Patent Document 1 below, the level of the detected capacitance of a tap position signal indicating the tap position where the finger touches the touch panel exceeds the first threshold, and the time during which the level of the detected capacitance exceeds the first threshold. Disclosed is that the tap position signal is valid if it persists for more than a second threshold time.

JP 2018-101342 A

In the technique disclosed in Patent Literature 1, the tap position signal cannot be validated until the second threshold time elapses, so there is a problem that the responsiveness of the touch panel device to the operation deteriorates.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a touch panel device, a control method for the touch panel device, a program, and a storage medium for storing the program, which can improve responsiveness to operations by operators. intended to

A first aspect of the present invention is a touch panel device having a touch panel that outputs a signal corresponding to a position touched by an operator, wherein the touch panel is partitioned into a grid pattern, and the intensity of the signal is obtained in each partition. a signal intensity acquisition unit that acquires a signal intensity acquisition unit that acquires the average or variance of the signal intensity for each of the divisions; an operation position acquiring unit that acquires a position of a section in which the variance of intensity is less than a second threshold as an operation position of the manipulator.

A second aspect of the present invention is a control method for a touch panel device having a touch panel that outputs a signal corresponding to a position touched by an operator, wherein the touch panel is partitioned into a grid, and each partition has the a signal intensity acquisition step of acquiring the signal intensity, an index acquisition step of acquiring the average or variance of the signal intensity in each of the compartments, and a compartment where the average of the signal intensities is greater than or equal to a first threshold, or and an operation position acquiring step of acquiring, as the operation position of the manipulator, the position of the section in which the variance of the intensity of the signal is less than a second threshold.

A third aspect of the present invention is a program that causes a computer to execute the method for controlling the touch panel device according to the second aspect.

A fourth aspect of the present invention is a storage medium that stores a program that causes a computer to execute the control method for the touch panel device according to the second aspect.

ADVANTAGE OF THE INVENTION According to this invention, the response with respect to operation by an operator can be improved.

It is a block diagram which shows the structure of a touch-panel apparatus. FIG. 3 is a schematic diagram of a state in which the touch panel is partitioned in a grid pattern; 5 is a flow chart showing the flow of index acquisition processing performed by an index acquisition unit and operation position acquisition processing performed by an operation position acquisition unit; 4 is a graph showing the signal intensity in each section and the average of the signal intensity when scanning was performed four times. It is a graph which shows the intensity|strength of the signal in each division of each time when scanning is performed 4 times. 5 is a flow chart showing the flow of index acquisition processing performed by an index acquisition unit and operation position acquisition processing performed by an operation position acquisition unit; It is a graph which shows the intensity|strength of the signal in each division|segment, and dispersion|distribution of the intensity|strength of a signal when scanning is performed 4 times. 4 is a flow chart showing a flow of operation position acquisition processing performed in an operation position acquisition unit; FIG. 4 is a graph showing the mean and variance of signal intensity in each section; FIG.

[First embodiment]
[Configuration of touch panel device]
FIG. 1 is a block diagram showing the configuration of the touch panel device 10. As shown in FIG. The touch panel device 10 is an input device that is operated by a user touching a display unit 12 on which an image or the like is displayed with an operator such as a finger or a stylus. The touch panel device 10 of this embodiment is used as an input device for a numerical controller 14 that controls a machine tool (not shown).

The touch panel device 10 has a display section 12 , a display control section 16 , a touch panel 18 , a signal strength acquisition section 20 , an index acquisition section 22 and an operation position acquisition section 24 .

The display unit 12 is a liquid crystal display or the like, and displays icons for the user to input commands to the numerical controller 14, information indicating the status of the machine tool sent from the numerical controller 14, and the like. The display control unit 16 controls the display unit 12 according to requests from the numerical control device 14 .

The touch panel 18 is a transparent film member attached to the screen of the display unit 12 . The touch panel 18 outputs a signal corresponding to the position where the operator is touched. The touch panel 18 of the present embodiment is a mutual capacitance touch panel, but may be a self-capacitance touch panel.

The signal intensity acquisition unit 20 partitions the touch panel 18 in a grid pattern and acquires the signal intensity of the touch panel 18 in each partition. FIG. 2 is a schematic diagram of a state in which the touch panel 18 is partitioned in a grid pattern. For example, the touch panel 18 is divided into m×n sections S[1, 1] to S[m, n], and the signal strength acquisition unit 20 obtains each section S[1, 1] to S[m, n]. acquires the intensity of the signal output by the touch panel 18 at . In FIG. 2, lines indicating the boundaries of the sections S are shown, but the lines indicating the boundaries of the sections S are not visible on the actual touch panel 18 . Hereinafter, when one section S[1, 1] to S[m, n] is not specified, it may be referred to as section S.

The index acquisition unit 22 acquires the average signal intensity in each section S from the intensity of the signal output by the touch panel 18 in each section S acquired by the signal intensity acquisition unit 20 .

The operation position acquisition unit 24 acquires the position where the touch panel 18 is in contact with the operator from the average intensity of the signal output from the touch panel 18 in each section S acquired by the index acquisition unit 22 as the operation position.

Note that the display control unit 16, the signal strength acquisition unit 20, and the operation position acquisition unit 24 are realized by executing a program stored in the storage medium 28 by a computer.

[Index Acquisition Processing and Operation Position Acquisition Processing]
FIG. 3 is a flow chart showing the flow of index acquisition processing performed by the index acquisition unit 22 and operation position acquisition processing performed by the operation position acquisition unit 24 .

In step S1, the index acquisition unit 22 scans the drive electrodes (not shown) of the touch panel 18 a plurality of times, and calculates the average signal intensity of each section S from the signals detected by the detection electrodes (not shown). FIG. 4 is a graph showing the signal intensity in each segment S when four scans are performed, and the average signal intensity.

In step S<b>2 , the operation position acquisition unit 24 selects one section S on the touch panel 18 . Section S is selected in the order of section S[1,1]→section S[1,2]→section S[1,3], for example (FIG. 2).

In step S<b>3 , the operation position acquisition unit 24 acquires an average signal intensity in the selected section S.

In step S4, the operation position acquisition unit 24 determines whether or not the average signal intensity of the selected section S is equal to or greater than the first threshold. When the average signal intensity of the selected section S is equal to or greater than the first threshold, the process proceeds to step S5, and when the average signal intensity of the selected section S is less than the first threshold, the process proceeds to step S6.

In step S5, the operation position acquisition unit 24 sets the selected section S to the operation position where the touch panel 18 is operated by the operator.

In step S6, the operation position acquisition unit 24 determines whether or not all the sections S have been selected by the process of step S2. If all the partitions S have been selected, the process ends, and if there are partitions S that have not been selected yet, the process proceeds to step S2.

[Effect]
FIG. 5 is a graph showing the intensity of the signal in each segment S when scanning is performed four times. As shown in FIG. 5, noise is detected at locations on the touch panel 18 other than the location where the operator is in contact. In a capacitive touch panel like the touch panel 18 of the present embodiment, noise may cause the touch panel 18 to acquire, as an operation position, a position different from the position where the operator is touched.

When a user's finger, stylus, or other operator touches the touch panel 18, a strong signal is continuously detected in the same section S over a plurality of scans. On the other hand, the noise changes in the segment S where a strong signal is detected each time a scan is performed.

Therefore, in the touch panel device 10 of the present embodiment, the operation position acquisition unit 24 acquires the position of the section S where the average signal intensity is equal to or greater than the first threshold as the operation position of the operator. The average signal intensity when the operator touches the touch panel 18 is higher than the average noise signal intensity. 10 noise tolerance can be improved, and the accuracy of the acquired operation position of the manipulator can be improved.

The length of time during which the noise is detected is shorter than the length of time during which the signal is detected when the operator touches the touch panel 18 . Therefore, it is conceivable to acquire the section S in which the signal intensity is equal to or greater than the threshold for a predetermined time or longer as the operating position of the operator. In that case, it takes time to acquire the operating position of the manipulator, and the responsiveness deteriorates. In contrast, touch panel device 10 of the present embodiment can improve responsiveness.

[Second embodiment]
The second embodiment differs from the first embodiment in the processing of the operation position acquisition unit 24 .

[Index Acquisition Processing and Operation Position Acquisition Processing]
FIG. 6 is a flow chart showing the flow of index acquisition processing performed by the index acquisition unit 22 and operation position acquisition processing performed by the operation position acquisition unit 24 .

In step S<b>11 , the index acquisition unit 22 calculates the variance of the signal intensity of each section S. FIG. 7 is a graph showing the intensity of the signal in each section S and the dispersion of the intensity of the signal when scanning is performed four times.

In step S<b>12 , the operation position acquisition unit 24 selects one section S on the touch panel 18 . Section S is selected in the order of section S[1,1]→section S[1,2]→section S[1,3], for example (FIG. 2).

In step S13, the operation position acquisition unit 24 determines whether or not the intensity of the signal in the selected section S is equal to or higher than the third threshold. The condition that the signal intensity in the selected section S is equal to or higher than the third threshold is satisfied if even one of the signal intensities obtained by scanning four times is equal to or higher than the third threshold. If the signal strength in the selected section S is equal to or higher than the third threshold, the process proceeds to step S14, and if the signal strength in the selected section S is less than the third threshold, the process proceeds to step S17.

In step S<b>14 , the operation position acquisition unit 24 acquires the variance of the signal intensity in the selected section S.

In step S<b>15 , the operation position acquisition unit 24 determines whether or not the variance of the signal intensity of the selected section S is less than the second threshold. When the variance of the signal intensity of the selected section S is less than the second threshold, the process proceeds to step S16, and when the average of the signal intensities of the selected section S is equal to or greater than the second threshold, the process proceeds to step S17.

In step S16, the operation position acquisition unit 24 sets the selected section S to the operation position where the touch panel 18 is operated by the operator.

In step S17, the operation position acquisition unit 24 determines whether or not all the sections S have been selected by the process of step S12. If all the partitions S have been selected, the process ends, and if there are partitions S that have not been selected yet, the process proceeds to step S12.

[Effect]
When a user's finger, stylus, or other operator touches the touch panel 18, a strong signal is continuously detected in the same section S over a plurality of scans. On the other hand, the noise changes in the segment S where a strong signal is detected each time a scan is performed.

Therefore, in the touch panel device 10 of the present embodiment, the operation position acquiring unit 24 acquires the position of the section S where the dispersion of the signal intensity is less than the second threshold value as the operation position of the operator. The variance of the intensity of the signal when the operator touches the touch panel 18 is smaller than the variance of the intensity of the noise signal. It is possible to improve the noise resistance of 10 and improve the accuracy of the operating position of the manipulator.

The length of time during which the noise is detected is shorter than the length of time during which the signal is detected when the operator touches the touch panel 18 . Therefore, it is conceivable to acquire the section S in which the signal intensity is equal to or greater than the threshold for a predetermined time or longer as the operating position of the operator. In that case, it takes time to acquire the operating position of the manipulator, and the responsiveness deteriorates. In contrast, touch panel device 10 of the present embodiment can improve responsiveness.

Further, in the touch panel device 10 of the present embodiment, the operation position acquiring unit 24 determines that the signal intensity variance is less than the second threshold value in the section S in which the signal intensity is equal to or greater than the third threshold value at least once. is determined. As a result, it is not determined that the variance of the signal intensity is less than the second threshold for the section S with the low signal intensity, so the load of the operation position acquisition process can be reduced.

[Third Embodiment]
The third embodiment differs from the first embodiment in the processing of the operation position acquisition unit 24. FIG.

[Index Acquisition Processing and Operation Position Acquisition Processing]
FIG. 8 is a flow chart showing the flow of index acquisition processing performed by the index acquisition unit 22 and operation position acquisition processing performed by the operation position acquisition unit 24 .

In step S<b>21 , the index acquisition unit 22 calculates the average and variance of the signal intensity of each section S. FIG. 9 is a graph showing the mean and variance of signal intensity in each segment S. FIG.

In step S<b>22 , the operation position acquisition unit 24 selects one section S on the touch panel 18 . Section S is selected in the order of section S[1,1]→section S[1,2]→section S[1,3], for example (FIG. 2).

In step S<b>23 , the operation position acquisition unit 24 acquires an average signal intensity in the selected section S.

In step S24, the operation position acquisition unit 24 determines whether or not the average signal intensity of the selected section S is equal to or greater than the first threshold. When the average signal intensity of the selected section S is equal to or greater than the first threshold, the process proceeds to step S25, and when the average signal intensity of the selected section S is less than the first threshold, the process proceeds to step S28.

In step S<b>25 , the operation position acquisition unit 24 acquires the variance of the signal intensity in the selected section S.

In step S<b>26 , the operation position acquisition unit 24 determines whether or not the variance of the signal intensity of the selected section S is less than the second threshold. When the signal intensity variance of the selected section S is less than the second threshold, the process proceeds to step S27, and when the signal intensity variance of the selected section S is equal to or greater than the second threshold, the process proceeds to step S28.

In step S27, the operation position acquisition unit 24 sets the selected section S to the operation position where the touch panel 18 is operated by the operator.

In step S28, the operation position acquisition unit 24 determines whether or not all the sections S have been selected by the process of step S22. If all the partitions S have been selected, the process ends, and if there are partitions S that have not been selected yet, the process proceeds to step S22.

[Effect]
When a user's finger, stylus, or other operator touches the touch panel 18, a strong signal is continuously detected in the same section S over a plurality of scans. On the other hand, the noise changes in the segment S where a strong signal is detected each time a scan is performed.

Therefore, in the touch panel device 10 of the present embodiment, the operation position acquisition unit 24 detects the position of the section S in which the average signal intensity is equal to or greater than the first threshold and the variance of the signal intensity is less than the second threshold. , is now acquired as the operation position of the operator. The average intensity of the signal when the operator touches the touch panel 18 is higher than the average intensity of the noise signal. Further, the variance of the intensity of the signal when the operator touches the touch panel 18 is smaller than the variance of the intensity of the noise signal. By setting the position of the section S having a high average signal strength and a low variance of the signal strength as the operation position, the noise resistance of the touch panel device 10 is improved, and the operation position of the operator is improved. Accuracy can be improved.

The length of time during which the noise is detected is shorter than the length of time during which the signal is detected when the operator touches the touch panel 18 . Therefore, it is conceivable to acquire the section S in which the signal intensity is equal to or greater than the threshold for a predetermined time or longer as the operating position of the operator. In that case, it takes time to acquire the operating position of the manipulator, and the responsiveness deteriorates. In contrast, touch panel device 10 of the present embodiment can improve responsiveness.

[Technical ideas obtained from the embodiment]
Technical ideas that can be grasped from the above embodiments will be described below.

A touch panel device (10) having a touch panel (18) for outputting a signal corresponding to a position touched by an operator, wherein the touch panel is divided into grids and the strength of the signal is measured in each division (S). an index acquisition unit (22) for acquiring an average or variance of the signal intensity for each of the sections; and a section where the average of the signal strength is equal to or greater than a first threshold Alternatively, an operation position acquiring unit (24) acquires a position of a section in which the variance of the intensity of the signal is less than a second threshold as an operation position of the operator. Thereby, it is possible to improve the responsiveness to the operation by the operator of the touch panel device.

In the touch panel device described above, the operation position acquiring unit acquires the position of the section where the average of the signal intensities is equal to or greater than a first threshold and the variance of the signal intensities is less than a second threshold. , may be obtained as the operation position of the operator. Thereby, it is possible to improve the responsiveness to the operation by the operator of the touch panel device.

In the above touch panel device, the operation position acquisition unit determines that the variance of the signal intensity is less than the second threshold in a section in which the signal intensity is equal to or greater than a third threshold at least once. may be performed. Thereby, the load of the operation position acquisition process can be reduced.

A control method for a touch panel device having a touch panel that outputs a signal corresponding to a position touched by an operator, wherein the touch panel is partitioned into a grid pattern, and signal intensity acquisition is performed to acquire the intensity of the signal in each partition. an index obtaining step of obtaining an average or variance of the intensity of the signal in each of the compartments; and an operation position acquisition step of acquiring a position of a section that is less than a second threshold as an operation position of the manipulator. Thereby, it is possible to improve the responsiveness to the operation by the operator of the touch panel device.

In the control method for the touch panel device described above, the operation position acquisition step includes dividing the area where the average of the signal intensities is greater than or equal to a first threshold and the variance of the signal intensities is less than a second threshold. may be obtained as the operation position of the manipulator. Thereby, it is possible to improve the responsiveness to the operation by the operator of the touch panel device.

In the above control method for a touch panel device, in the operation position acquisition step, the variance of the signal intensity is less than a second threshold in a section in which the signal intensity is equal to or greater than a third threshold at least once. You may make a decision. Thereby, the load of the operation position acquisition process can be reduced.

A program that causes a computer to execute the above-described touch panel device control method. Thereby, it is possible to improve the responsiveness to the operation by the operator of the touch panel device.

A storage medium (28) for storing a program for causing a computer to execute the control method of the touch panel device. Thereby, it is possible to improve the responsiveness to the operation by the operator of the touch panel device.

DESCRIPTION OF SYMBOLS 10... Touch panel apparatus 18... Touch panel 20... Signal strength acquisition part 22... Index acquisition part 24... Operation position acquisition part S... Section

Claims (4)

A touch panel device having a touch panel that outputs a signal corresponding to a position touched by an operator,
a signal intensity acquisition unit that partitions the touch panel in a grid pattern and acquires the intensity of the signal in each partition;
an index acquisition unit that acquires the average and variance of the intensity of the signal for each of the sections;
an operation position acquisition unit configured to acquire, as an operation position of the manipulator, a position of a section in which the average of the signal intensities is equal to or greater than a first threshold and the variance of the signal intensities is less than a second threshold; ,
A touch panel device. A control method for a touch panel device having a touch panel that outputs a signal corresponding to a position touched by an operator, comprising:
A signal strength acquisition step of dividing the touch panel in a grid pattern and obtaining the strength of the signal in each section;
an index obtaining step of obtaining the mean and variance of the intensity of the signal in each of the compartments;
an operation position obtaining step of obtaining, as an operation position of the manipulator, the position of the section where the average of the signal intensities is equal to or greater than a first threshold and the variance of the signal intensities is less than a second threshold; ,
A control method for a touch panel device. A program that causes a computer to execute the control method of the touch panel device according to claim 2 . A storage medium for storing a program for causing a computer to execute the control method of the touch panel device according to claim 2.

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