CN114026528B - Touch panel system and display - Google Patents
Touch panel system and display Download PDFInfo
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- CN114026528B CN114026528B CN201980097806.8A CN201980097806A CN114026528B CN 114026528 B CN114026528 B CN 114026528B CN 201980097806 A CN201980097806 A CN 201980097806A CN 114026528 B CN114026528 B CN 114026528B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Abstract
A touch panel system (1) is provided with an electrostatic capacitance type touch panel (5), a main control processing device (6), and a touch panel controller (7). A master control processing device (6) is provided with: a 1 st storage unit (64) that stores information indicating each of a plurality of sampling frequencies; and a 1 st communication unit (65) that outputs data indicating a sampling frequency selected by a user from among the plurality of sampling frequencies indicated by the information stored in the 1 st storage unit (64). A touch panel controller (7) is provided with: a 2 nd communication unit (71) that receives data output by a 1 st communication unit (65) included in the master processing device (6); a 2 nd storage unit (72) that stores the data received by the 2 nd communication unit (71); and a detection unit (73) that detects a touch on the capacitive touch panel (5) at a sampling frequency indicated by the data stored in the 2 nd storage unit (72).
Description
Technical Field
The present invention relates to a touch panel system that detects a touch to an electrostatic capacitance type touch panel, and a display that displays information for detecting the touch.
Background
Conventionally, a capacitive touch panel has been used as one of input devices. The capacitance-type touch panel is an input device that can detect a touch on the capacitance-type touch panel by detecting a change in capacitance. For example, in a factory, the capacitance-type touch panel may be operated while a person wears gloves. In a case where the capacitance-type touch panel is operated with a person wearing gloves, a change in capacitance when the capacitance-type touch panel is touched is smaller than a change in capacitance before the capacitance-type touch panel is touched, compared to a case where the capacitance-type touch panel is operated with a person not wearing gloves. If the change in capacitance is relatively small, it may be difficult to detect that a touch is made on the capacitance-type touch panel. Here, a technique has been proposed that can detect that a touch is made on a capacitive touch panel even when a person operates the capacitive touch panel while wearing gloves.
Patent document 1: japanese laid-open patent publication No. 2012-248035
Disclosure of Invention
For example, in a factory, an electrostatic capacitance type touch panel is sometimes arranged in the vicinity of a device that periodically generates noise with respect to electrostatic capacitance. In the related art, when a capacitive touch panel is placed in the vicinity of a device that periodically generates noise with respect to the capacitance, the noise may be erroneously detected as a touch to the capacitive touch panel, and it may be difficult to appropriately detect that the capacitive touch panel has been touched. If the sensitivity for detecting a touch to the electrostatic capacitance type touch panel is lowered, even in the related art, it is suppressed that noise is erroneously detected as a touch to the electrostatic capacitance type touch panel. However, if the sensitivity is lowered, a situation in which the touch to the capacitive touch panel is not detected may occur. In the case where the capacitance-type touch panel is disposed in the vicinity of a device that periodically generates noise with respect to capacitance, it is required to provide a technique of suppressing erroneous detection of noise as being a touch to the capacitance-type touch panel, not only by adjustment of sensitivity.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a touch panel system which, when an electrostatic capacitance type touch panel is arranged in the vicinity of a device which periodically generates noise with respect to electrostatic capacitance, appropriately detects a touch to the electrostatic capacitance type touch panel by suppressing erroneous detection of noise to the electrostatic capacitance type touch panel, in addition to adjustment of sensitivity for detecting a touch to the electrostatic capacitance type touch panel.
In order to solve the above problems, the present invention includes a capacitive touch panel, a main control processing device, and a touch panel controller. The master control processing device includes: a 1 st storage unit that stores information indicating each of a plurality of sampling frequencies; and a 1 st communication unit that outputs data indicating a sampling frequency selected by a user from among the plurality of sampling frequencies indicated by the information stored in the 1 st storage unit. The touch panel controller includes: a 2 nd communication unit that receives data output from the 1 st communication unit included in the master processing device; a 2 nd storage unit that stores the data received by the 2 nd communication unit; and a detection unit that detects a touch on the electrostatic capacitance type touch panel at a sampling frequency indicated by the data stored in the 2 nd storage unit.
ADVANTAGEOUS EFFECTS OF INVENTION
The touch panel system according to the present invention is advantageous in that, when the capacitive touch panel is disposed in the vicinity of a device that periodically generates noise with respect to the capacitance, it is possible to suppress erroneous detection of noise as a touch on the capacitive touch panel and appropriately detect a touch on the capacitive touch panel.
Drawings
Fig. 1 is a diagram showing a configuration of a touch panel system according to an embodiment.
Fig. 2 is a diagram for explaining a threshold value for determining sensitivity at the time of detecting a touch on the electrostatic capacity type touch panel included in the touch panel system according to the embodiment.
Fig. 3 is a diagram showing a relationship between a cycle and noise when detecting a touch to the capacitive touch panel included in the touch panel system according to the embodiment.
Fig. 4 is a diagram 1 for explaining the allowable range of the difference value in the case where sampling is performed a plurality of times for the number of times of 1 touch to the electrostatic capacity type touch panel included in the touch panel system according to the embodiment.
Fig. 5 is a view 2 for explaining the allowable range of the difference value in the case where a plurality of samples are taken with respect to the number of samples of 1 touch on the electrostatic capacity type touch panel included in the touch panel system according to the embodiment.
Fig. 6 is a diagram showing examples of a plurality of firmware in the embodiment.
Fig. 7 is a flowchart showing an example of the flow of the operation of the touch panel system according to the embodiment.
Fig. 8 is a diagram for explaining an example of information displayed on the display device included in the touch panel system according to the embodiment.
Detailed Description
Hereinafter, a touch panel system and a display according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.
Description of the preferred embodiment
First, a configuration of the touch panel system 1 according to the embodiment will be described. Fig. 1 is a diagram showing a configuration of a touch panel system 1 according to an embodiment. An example of the touch panel system 1 is a programmable display having a function of communicating with the programmable logic controller 2. In fig. 1, the programmable logic controller 2 is denoted as "PLC 2". The touch panel system 1 is connected to an input device 3 used by a user when the user inputs information to the touch panel system 1.
The touch panel system 1 includes: a capacitive touch panel 5 that is touched by the operator 4; a master control processing device 6 that stores information representing each of a plurality of sampling frequencies; a touch panel controller 7 that detects a touch on the electrostatic capacitance type touch panel 5; and a display device 8 that displays an image. An example of the display device 8 is a liquid crystal display device. The user who inputs information into the touch panel system 1 may be the same person as the operator 4 or a person different from the operator 4. For example, the touch panel system 1 is a display that displays information for detecting a touch to the electrostatic capacitance type touch panel 5.
The master control processing device 6 includes: a communication control unit 61 having a function of communicating with the programmable logic controller 2; and a receiving unit 62 that receives information input to the main control processing device 6 by the user using the input device 3. The main control processing device 6 further includes a display control unit 63, and the display control unit 63 outputs image information to the display device 8 and causes the display device 8 to display an image based on the image information.
The master processing apparatus 6 further includes a 1 st storage unit 64, and the 1 st storage unit 64 stores information indicating each of the plurality of sampling frequencies. An example of the 1 st storage section 64 is a semiconductor memory. The main control processing device 6 further includes a 1 st communication unit 65, and the 1 st communication unit 65 outputs data indicating a sampling frequency selected by the user among the plurality of sampling frequencies indicated by the information stored in the 1 st storage unit 64 to the touch panel controller 7. The 1 st communication unit 65 also has a function of receiving data output from the touch panel controller 7. For example, the 1 st communication unit 65 receives data corresponding to a touch on the capacitive touch panel 5 by the operator 4 from the touch panel controller 7. The communication control unit 61 outputs the data received by the 1 st communication unit 65 or the data based on the data to the programmable logic controller 2.
Specifically, the display control unit 63 outputs image information including the information stored in the 1 st storage unit 64 to the display device 8, and the display device 8 displays information indicating a plurality of sampling frequencies based on the image information. The user selects any one of a plurality of sampling frequencies indicated by the information displayed on the display device 8, and inputs information for specifying the selected sampling frequency to the main control processing device 6 using the input device 3. The receiving unit 62 receives a selection of one of a plurality of sampling frequencies indicated by the information displayed on the display device 8 from the user via the input device 3. The 1 st communication unit 65 outputs data indicating the sampling frequency corresponding to the selection received by the reception unit 62 to the touch panel controller 7.
For example, the information stored by the 1 st storage unit 64 also includes information each showing a plurality of set values for a threshold value that determines sensitivity at the time of detecting a touch to the electrostatic capacitance type touch panel 5, the number of sampling times for 1 touch to the electrostatic capacitance type touch panel 5, and an allowable range for deciding an allowable range of having been touched, that is, an allowable range of a difference value between a maximum value and a minimum value of touched coordinates on the electrostatic capacitance type touch panel 5 in a case where sampling is performed a plurality of times for 1 touch to the electrostatic capacitance type touch panel 5.
Specifically, the display control unit 63 outputs image information including information indicating each of the plurality of setting values to the display device 8 for each of the sampling frequency, the threshold value, the sampling frequency, and the allowable range of the difference value stored in the 1 st storage unit 64. The display device 8 displays information indicating each of the plurality of setting values for each of the sampling frequency, the threshold value, the number of samplings, and the allowable range of the difference value, based on the image information.
The receiving unit 62 receives, from the user via the input device 3, selection of one of a plurality of setting values indicated by the information displayed on the display device 8, for each of the sampling frequency, the threshold value, the number of samplings, and the allowable range of the difference value. The 1 st communication unit 65 outputs data indicating a set of setting values corresponding to the selection received by the receiving unit 62 to the touch panel controller 7. That is, the 1 st communication unit 65 outputs data indicating the sampling frequency, the threshold value, the number of samplings, and the allowable range of the difference value selected by the user to the touch panel controller 7.
Further, for example, the information stored by the 1 st storage section 64 is information that specifies each of a plurality of firmware. Each of the plurality of firmware pieces determines each of a sampling frequency, the threshold value, the number of sampling times, and an allowable range of the difference value, which determine a detection cycle of a touch to the capacitive touch panel 5.
Specifically, the display control unit 63 outputs image information including information specifying each of the plurality of firmware stored in the 1 st storage unit 64 to the display device 8, and the display device 8 displays information indicating the plurality of firmware based on the image information. The receiving unit 62 receives a selection of one of the plurality of firmware indicated by the information displayed on the display device 8 from the user via the input device 3. The 1 st communication unit 65 outputs data indicating the firmware corresponding to the selection received by the reception unit 62 to the touch panel controller 7. That is, the 1 st communication unit 65 outputs data indicating the firmware selected by the user among the plurality of firmware to the touch panel controller 7.
The touch panel controller 7 includes: a 2 nd communication unit 71 that receives data output from the 1 st communication unit 65 included in the master processing device 6; and a 2 nd storage unit 72 that stores the data received by the 2 nd communication unit 71. An example of the 2 nd storage section 72 is a semiconductor memory. The touch panel controller 7 further includes a detection unit 73, and the detection unit 73 detects a touch on the capacitance-type touch panel 5 at a sampling frequency indicated by the data stored in the 2 nd storage unit 72. The detection section 73 detects a touch to the electrostatic capacitance type touch panel 5 at a sampling frequency shown by the data stored in the 2 nd storage section 72, regardless of the sensitivity at the time of detecting a touch to the electrostatic capacitance type touch panel 5. The detection unit 73 detects a touch to the capacitance-type touch panel 5 by detecting a change in capacitance when the operator 4 presses the capacitance-type touch panel 5. The 2 nd communication unit 71 outputs data for specifying the coordinates of the touched position on the capacitive touch panel 5 to the main control processing device 6.
Assume that the 1 st communication unit 65 of the main control processing device 6 outputs data indicating a set of setting values selected by the user to the touch panel controller 7. The set of settings includes one setting for each of the sampling frequency, the threshold, the number of samplings, and the allowable range of the difference. In the above case, the detection unit 73 detects a touch on the capacitive touch panel 5 at a sampling frequency, a threshold value, the number of sampling times, and an allowable range of difference values indicated by the data.
Assume that the 1 st communication unit 65 of the main control processing device 6 outputs data indicating the firmware selected by the user to the touch panel controller 7. In this case, the detection unit 73 detects a touch on the capacitive touch panel 5 according to firmware selected by the user. The display device 8 displays information indicating the firmware selected by the user and the usage environment of the capacitive touch panel 5.
When the detection unit 73 performs multiple sampling for 1 touch on the capacitive touch panel 5, the 2 nd communication unit 71 outputs information indicating values of a plurality of coordinates obtained by the multiple sampling to the main control processing device 6. The 1 st communication unit 65 of the master processing apparatus 6 receives information indicating values of a plurality of coordinates output by the 2 nd communication unit 71. The main control processing device 6 further includes a processing unit 66, and the processing unit 66 processes the information received by the 1 st communication unit 65. The function of the processing unit 66 will be described in the description of the operation of the touch panel system 1.
The receiving unit 62 of the main control processing device 6 also has a function of receiving additional information indicating a sampling frequency that is different from the plurality of sampling frequencies indicated by the information already stored in the 1 st storage unit 64 and that specifies a detection cycle of a touch to the capacitive touch panel 5. The plurality of sampling frequencies indicated by the already stored information is defined as "a plurality of sampling frequencies before addition". Specifically, when the user inputs additional information to the main control processing device 6 using the input device 3, the receiving unit 62 receives the additional information. The 1 st storage unit 64 further stores the additional information received by the reception unit 62.
When the 1 st storage unit 64 further stores additional information, the display control unit 63 outputs image information including information indicating a plurality of sampling frequencies before the addition and a sampling frequency indicated by the additional information to the display device 8. The display device 8 displays information indicating a plurality of sampling frequencies before the addition and the sampling frequency indicated by the additional information based on the image information. The receiving unit 62 receives, from the user via the input device 3, a selection of one of a plurality of sampling frequencies before addition shown in the information displayed on the display device 8 and a sampling frequency shown in the additional information. The 1 st communication unit 65 outputs data indicating the sampling frequency corresponding to the selection received by the reception unit 62 to the touch panel controller 7.
The receiving unit 62 included in the main control processing device 6 also has a function of receiving additional information indicating firmware different from the plurality of pieces of firmware indicated by the information already stored in the 1 st storage unit 64 and indicating each of the sampling frequency, the threshold value, the number of sampling times, and the allowable range of the difference value, which determine the detection cycle of the touch to the capacitance-type touch panel 5. The plurality of pieces of firmware indicated by the already stored information are defined as "a plurality of pieces of firmware before addition". Specifically, when the user inputs additional information to the main control processing device 6 using the input device 3, the receiving unit 62 receives the additional information. The 1 st storage unit 64 further stores the additional information received by the reception unit 62.
When the 1 st storage unit 64 further stores additional information, the display control unit 63 outputs image information including information indicating a plurality of pieces of firmware before addition and pieces of firmware indicated by the additional information to the display device 8. The display device 8 displays information indicating a plurality of pieces of firmware before addition and the firmware indicated by the addition information based on the image information. The receiving unit 62 receives, from the user via the input device 3, a selection of one sampling frequency from among a plurality of pieces of firmware before addition shown in the information displayed on the display device 8 and the firmware shown in the additional information. The 1 st communication unit 65 outputs data indicating the firmware corresponding to the selection received by the reception unit 62 to the touch panel controller 7.
Next, the operation of the touch panel system 1 will be described. Fig. 2 is a diagram for explaining a threshold value for determining sensitivity at the time of detecting a touch on the capacitance type touch panel 5 included in the touch panel system 1 according to the embodiment. In fig. 2, a signal a shows the electrostatic capacitance in a state where the operator 4 does not wear gloves, that is, in a case where the electrostatic capacitance type touch panel 5 is touched with bare hands. The signal B shows the electrostatic capacitance when the operator 4 touches the electrostatic capacitance type touch panel 5 with gloves on. Fig. 2 shows a 1 st threshold, a 2 nd threshold smaller than the 1 st threshold, and a 3 rd threshold smaller than the 2 nd threshold. The 1 st threshold value, the 2 nd threshold value, and the 3 rd threshold value are threshold values that determine the sensitivity when detecting a touch to the capacitive touch panel 5.
When the signal a and the signal B are compared, it is understood that, when the electrostatic capacitance type touch panel 5 is touched in a state where the operator 4 wears gloves, a change in electrostatic capacitance when the electrostatic capacitance type touch panel 5 is not touched and has been touched is small as compared with a case where the electrostatic capacitance type touch panel 5 is touched in a state where the operator 4 does not wear gloves. In the case where the threshold value for determining the sensitivity is the 1 st threshold value, if the operator 4 does not wear gloves, the value of the signal a is larger than the 1 st threshold value, and therefore the detection section 73 can detect the touch to the capacitance type touch panel 5. However, if the threshold value for determining the sensitivity is the 1 st threshold value, the value of the signal B is smaller than the 1 st threshold value if the operator 4 wears gloves, and therefore the detection unit 73 cannot detect a touch to the capacitance-type touch panel 5.
The user selects a set value group or firmware including a 2 nd threshold value smaller than the 1 st threshold value, and inputs information indicating the selected set value group or firmware to the main control processing device 6 via the input device 3. In this case, since the value of the signal B is larger than the 2 nd threshold value, the detection section 73 can detect a touch to the electrostatic capacity type touch panel 5. The user may select a set value including a 3 rd threshold value smaller than the 1 st threshold value, or firmware. When the set value including the 3 rd threshold value or the firmware is selected, the value of the signal B is larger than the 3 rd threshold value, and therefore the detection unit 73 can detect a touch to the electrostatic capacity type touch panel 5. However, for example, if the threshold value for determining the sensitivity is the 3 rd threshold value, the detection unit 73 may erroneously detect noise as a touch on the capacitive touch panel 5 if the noise becomes large, and therefore the user needs to appropriately select the threshold value for determining the sensitivity.
Fig. 3 is a diagram showing a relationship between a cycle and noise when detecting a touch on the capacitance type touch panel 5 included in the touch panel system 1 according to the embodiment. A case is assumed where the touch panel system 1 having the capacitance type touch panel 5 is arranged in the vicinity of a device that periodically generates noise with respect to the capacitance. Fig. 3 (a) shows a signal containing noise generated periodically. That is, the signal of fig. 3 (a) is a signal containing noise generated at a specific cycle. Fig. 3 (B) shows a rectangular wave of the 1 st sampling frequency that determines the detection cycle of a touch to the electrostatic capacitance type touch panel 5. The pulse of the rectangular wave in fig. 3B shows the timing (timing) at which the detection unit 73 detects a touch to the capacitance-type touch panel 5.
When fig. 3 (a) and 3 (B) are compared, it can be seen that the pulse of the rectangular wave of fig. 3 (B) is generated at the above-described specific period of fig. 3 (a). Therefore, if the detection of the touch to the electrostatic capacity type touch panel 5 is performed at the 1 st sampling frequency, the noise may be erroneously detected as the touch to the electrostatic capacity type touch panel 5.
Fig. 3 (C) shows a rectangular wave of the 2 nd sampling frequency that determines the detection cycle of a touch to the electrostatic capacitance type touch panel 5. The pulse of the rectangular wave in fig. 3 (C) shows the timing at which the detection unit 73 detects a touch to the electrostatic capacitance type touch panel 5. When fig. 3 (a) and 3 (C) are compared, it is understood that the pulse of the rectangular wave of fig. 3 (C) is not generated at the above-described specific period. That is, the period of the pulse generating the rectangular wave of fig. 3 (C) is different from the above-described specific period of generating the noise. Therefore, if the detection of the touch to the electrostatic capacitance type touch panel 5 is performed at the 2 nd sampling frequency, the detection section 73 can suppress the noise being erroneously detected as the touch to the electrostatic capacitance type touch panel 5.
That is, in the case where the capacitance-type touch panel 5 is arranged in the vicinity of a device that periodically generates noise with respect to the capacitance, if the 2 nd sampling frequency is selected by the user, the detection unit 73 can suppress the noise being erroneously detected as being a touch to the capacitance-type touch panel and appropriately detect the touch to the capacitance-type touch panel 5, not only by adjusting the sensitivity for detecting the touch to the capacitance-type touch panel 5.
Fig. 4 is a diagram 1 for explaining an allowable range of a difference value in a case where a plurality of samplings are performed with respect to the number of samplings of 1 touch to the capacitive touch panel 5 included in the touch panel system 1 according to the embodiment. When the number of sampling for 1 touch to the capacitance-type touch panel 5 is 1, the detection unit 73 may not accurately detect the touched position of the capacitance-type touch panel 5 due to, for example, the influence of noise. In order to accurately detect the touched position, the number of sampling times for 1 touch is preferably a plurality of times. Fig. 4 shows the 1 st setting with the number of sampling times being 3.
When sampling is performed a plurality of times for 1 touch to the capacitive touch panel 5, if the difference between the maximum value and the minimum value of the coordinates detected by the detection unit 73 is large, there is a possibility that the touched position of the capacitive touch panel 5 may move. If the touched position moves, the touched position may not be determined properly. In order to appropriately determine the touched position, it is preferable to set an allowable range of the difference value. In the 1 st setting shown in fig. 4, the allowable range of the difference is 5. Further, in the 1 st setting, the allowable range of the difference is 5 for both the X coordinate and the Y coordinate.
Fig. 4 further illustrates the 1 st and 2 nd cases in the 1 st setting of sampling 3 times for 1 touch to the electrostatic capacitance type touch panel 5. In case 1, the 1 st acquisition coordinate of the X axis is 32 and the 1 st acquisition coordinate of the Y axis is 128, the 2 nd acquisition coordinate of the X axis is 33 and the 2 nd acquisition coordinate of the Y axis is 128, the 3 rd acquisition coordinate of the X axis is 38 and the 3 rd acquisition coordinate of the Y axis is 128. The acquired coordinates are coordinates indicating a touched position when the capacitive touch panel 5 is touched, and are detected by the detection unit 73 of the touch panel controller 7.
The 2 nd communication unit 71 of the touch panel controller 7 outputs data indicating the acquired coordinates to the main control processing device 6. The 1 st communication unit 65 of the master processing apparatus 6 receives the data output by the 2 nd communication unit 71. In case 1, since the difference between the 1 st acquired coordinate on the X axis and the 3 rd acquired coordinate on the X axis, that is, the X acquired coordinate difference exceeds the tolerance 5 of the difference and becomes 6, the processing unit 66 of the main control processing device 6 discards the data received by the 1 st communication unit 65. That is, the processing unit 66 discards the value of the coordinates detected by the detecting unit 73.
In case 2, the 1 st acquisition coordinate of the X axis is 32 and the 1 st acquisition coordinate of the Y axis is 129, the 2 nd acquisition coordinate of the X axis is 33 and the 2 nd acquisition coordinate of the Y axis is 127, the 3 rd acquisition coordinate of the X axis is 31 and the 3 rd acquisition coordinate of the Y axis is 128. The 2 nd communication unit 71 of the touch panel controller 7 outputs data indicating the acquired coordinates to the main control processing device 6. The 1 st communication unit 65 of the master processing device 6 receives the data output by the 2 nd communication unit 71. In case 2, the difference between the maximum value and the minimum value does not exceed the allowable range 5 of the difference value for the acquired coordinates of the X axis and the acquired coordinates of the Y axis. Therefore, the processing unit 66 of the main control processing device 6 calculates an average value for both the X axis and the Y axis. Specifically, the processing unit 66 calculates the average value of the acquired coordinates on the X axis to be 32 and the average value of the acquired coordinates on the Y axis to be 128.
Fig. 5 is a view 2 for explaining an allowable range of a difference value in a case where a plurality of samples are taken with respect to the number of samples of 1 touch on the capacitance type touch panel 5 included in the touch panel system 1 according to the embodiment. Fig. 5 shows the 2 nd setting with the sampling number of 5. In the 2 nd setting, the allowable range of the difference is 10. Further, in the 2 nd setting shown in fig. 5, the allowable range of the difference is 10 for both the X coordinate and the Y coordinate.
In the case of fig. 5, the acquired 1 st X-axis coordinate is 32 and the acquired 1 st Y-axis coordinate is 126, the acquired 2 nd X-axis coordinate is 33 and the acquired 2 nd Y-axis coordinate is 128, the acquired 3 rd X-axis coordinate is 38 and the acquired 3 rd Y-axis coordinate is 128, the acquired 4 th X-axis coordinate is 30 and the acquired 4 th Y-axis coordinate is 135, the acquired 5 th X-axis coordinate is 35 and the acquired 5 th Y-axis coordinate is 130.
The 2 nd communication unit 71 of the touch panel controller 7 outputs data indicating the acquired coordinates to the main control processing device 6. The 1 st communication unit 65 of the master processing device 6 receives the data output by the 2 nd communication unit 71. In the case of fig. 5, the difference between the maximum value and the minimum value does not exceed the allowable range 10 of the difference value for the acquired coordinates of the X axis and the acquired coordinates of the Y axis. Therefore, the processing unit 66 of the main control processing device 6 calculates an average value for both the X axis and the Y axis. Specifically, the processing unit 66 calculates the average value of the acquired coordinates on the X axis to be 34 and the average value of the acquired coordinates on the Y axis to be 129.
Next, examples of a plurality of firmware will be described. Fig. 6 is a diagram showing examples of a plurality of firmware in the embodiment. Fig. 6 shows the 1 st firmware, the 2 nd firmware, the 3 rd firmware, and the 4 th firmware. The 1 st firmware, the 2 nd firmware, the 3 rd firmware, and the 4 th firmware are examples of a plurality of firmware.
The 1 st firmware is the following firmware, namely, the sensitivity threshold is the 1 st threshold, the sampling frequency is 100Hz, the number of sampling times is 3, and the allowable range of the difference is 5. The 2 nd firmware is the following firmware, namely, the sensitivity threshold is the 1 st threshold, the sampling frequency is 70Hz, the number of sampling times is 4, and the allowable range of the difference is 7. The 3 rd firmware is the firmware that the sensitivity threshold is the 2 nd threshold, the sampling frequency is 50Hz, the number of sampling times is 5, and the allowable range of the difference is 10. The 4 th firmware is a firmware in which the sensitivity threshold is a 3 rd threshold, the sampling frequency is 70Hz, the number of sampling times is 3, and the allowable range of the difference is 5.
The 1 st firmware is firmware corresponding to an environment in which the operator 4 uses the glove and uses the touch panel system 1. The 2 nd firmware is firmware corresponding to an environment in which the operator 4 uses the touch panel system 1 outdoors. The 3 rd firmware is a firmware corresponding to a case where the operator 4 uses the touch panel system 1 in a noise environment where noise is a preset moderate level. The 4 th firmware is firmware corresponding to a noise environment in which the operator 4 uses the touch panel system 1 in a noise environment in which noise is a large degree set in advance.
For example, before manufacturing the touch panel system 1, an experiment for determining the sensitivity threshold, the sampling frequency, the number of sampling times, and the allowable range of the difference is performed under each of a plurality of conditions. Examples of the plurality of conditions are conditions under which the operator 4 uses the glove and uses the touch panel system 1. Another example of the plurality of conditions is a condition in which the operator 4 uses the touch panel system 1 outdoors. Another example of the plurality of conditions is a condition in which the operator 4 uses the touch panel system 1 in an environment in which noise is a predetermined moderate level. A further example of the plurality of conditions is a condition in which the operator 4 uses the touch panel system 1 in a noisy environment in which noise is a large degree set in advance. A plurality of setting values for each of the sensitivity threshold, the sampling frequency, the number of sampling times, and the allowable range of the difference value are determined based on the result of the experiment. Further, each of the plurality of firmware is determined based on a result of the experiment.
Fig. 7 is a flowchart showing an example of the flow of the operation of the touch panel system 1 according to the embodiment. The receiving unit 62 receives a selection of one of the plurality of firmware from the user via the input device 3 (S1). Specifically, the display device 8 displays information corresponding to a plurality of pieces of firmware. Fig. 8 is a diagram for explaining an example of information displayed on the display device 8 included in the touch panel system 1 according to the embodiment. For example, the display device 8 displays a drawing on the left side of the arrow in fig. 8.
The left side of the arrow of fig. 8 illustrates information of a plurality of environments using the touch panel system 1. The plurality of environments shown in the information of fig. 8 are an environment in which the operator 4 uses gloves, an environment in which the operator 4 uses the touch panel system 1 outdoors, a noise environment in which noise is a preset moderate level, and a noise environment in which noise is a preset large level. The diagram on the right side of the arrow in fig. 8 shows an example of a plurality of pieces of firmware indicated by information stored in the 1 st storage unit 64 included in the master processing apparatus 6.
The 1 st communication unit 65 reads out data indicating the firmware corresponding to the selection received by the reception unit 62 from the 1 st storage unit 64 (S2). That is, in step S2, the 1 st communication unit 65 reads data indicating the firmware selected by the user from the 1 st storage unit 64. For example, when the reception unit 62 receives information specifying an environment such as "outdoor use" among a plurality of use environments shown in the left side diagram of the arrow in fig. 8, the 1 st communication unit 65 reads data indicating the 2 nd firmware corresponding to the environment in which the operator 4 uses the touch panel system 1 outdoors from the 1 st storage unit 64. The 1 st communication unit 65 outputs data indicating the firmware selected by the user to the touch panel controller 7.
The 2 nd communication unit 71 included in the touch panel controller 7 receives data indicating the firmware selected by the user, and stores the received data in the 2 nd storage unit 72 (S3). That is, in step S3, the 2 nd communication unit 71 writes the firmware selected by the user into the 2 nd storage unit 72. The detection unit 73 detects a touch on the capacitive touch panel 5 based on the firmware selected by the user and stored in the 2 nd storage unit 72 (S4).
As described above, in the touch panel system 1, in the main control processing device 6, the 1 st storage unit 64 stores information indicating each of the plurality of sampling frequencies, and the 1 st communication unit 65 outputs data indicating the sampling frequency selected by the user among the plurality of sampling frequencies indicated by the information stored in the 1 st storage unit 64 to the touch panel controller 7. In the touch panel controller 7, the 2 nd communication unit 71 receives data output from the 1 st communication unit 65, the 2 nd storage unit 72 stores the data received by the 2 nd communication unit 71, and the detection unit 73 detects a touch on the capacitive touch panel 5 at a sampling frequency indicated by the data stored in the 2 nd storage unit 72.
If the user has properly selected the sampling frequency, in the touch panel system 1 according to the embodiment, even if the capacitance-type touch panel 5 is arranged in the vicinity of a device that periodically generates noise with respect to the capacitance, it is possible to suppress erroneous detection of noise as a touch to the capacitance-type touch panel 5 and to properly detect a touch to the capacitance-type touch panel 5, not only by adjusting the sensitivity for detecting a touch to the capacitance-type touch panel 5.
That is, even if the electrostatic capacitance type touch panel 5 is arranged in the vicinity of a device that generates noise with respect to the electrostatic capacitance at a specific cycle, if the user selects a sampling frequency different from the specific cycle, with the touch panel system 1, it is possible to suppress the noise being erroneously detected as being a touch to the electrostatic capacitance type touch panel 5 and appropriately detect the touch to the electrostatic capacitance type touch panel 5, not only by adjusting the sensitivity for detecting the touch to the electrostatic capacitance type touch panel 5.
In other words, the touch panel system 1 enables the user to select a sampling frequency for suppressing the noise being erroneously detected as being a touch to the electrostatic capacity type touch panel 5 from among a plurality of sampling frequencies indicated by the information stored in the 1 st storage section 64, and to appropriately detect the touch to the electrostatic capacity type touch panel 5.
The main control processing device 6 of the touch panel system 1 includes a receiving unit 62, and the receiving unit 62 receives additional information indicating a sampling frequency which is different from a plurality of sampling frequencies indicated by information already stored in the 1 st storage unit 64, and determines a detection cycle of a touch to the capacitance-type touch panel 5. In addition, the 1 st storage unit 64 of the master processing apparatus 6 further stores the additional information received by the reception unit 62. That is, the touch panel system 1 stores, in addition to information indicating a plurality of sampling frequencies, additional information indicating sampling frequencies different from the plurality of sampling frequencies.
Therefore, the touch panel system 1 allows the user to select a sampling frequency from the plurality of sampling frequencies and a sampling frequency different from the plurality of sampling frequencies, the selected sampling frequency being used to suppress the noise being erroneously detected as being a touch to the electrostatic capacitance type touch panel 5, and to appropriately detect the touch to the electrostatic capacitance type touch panel 5.
Similarly, the touch panel system 1 can detect a touch to the electrostatic capacitance type touch panel 5 by firmware desired by a user among the plurality of firmware.
As described above, the additional information may be information indicating firmware, and may be received by the receiving unit 62 of the main control processing device 6. That is, the touch panel system 1 can add a sampling frequency or firmware desired by the user. The touch panel system 1 can detect a touch on the electrostatic capacitance type touch panel 5 at a sampling frequency or firmware indicated by additional information according to a user's selection. That is, the touch panel system 1 can detect a touch to the electrostatic capacitance type touch panel 5 at a sampling frequency or firmware desired by a user.
That is, even if the usage environment of the electrostatic capacitance type touch panel 5 changes, the touch panel system 1 can detect a touch to the electrostatic capacitance type touch panel 5 at a sampling frequency or firmware desired by a user. For example, even if the electrostatic capacitance type touch panel 5 is arranged in the vicinity of a device that periodically generates noise with respect to the electrostatic capacitance, the period of the noise generated by the device is different from the previous period, the touch panel system 1 can detect the touch to the electrostatic capacitance type touch panel 5 at a sampling frequency or firmware desired by the user according to the selection of the user.
A part or all of the functions of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66 included in the main control processing device 6 included in the touch panel system 1 according to the embodiment may be realized by a processor that executes a program stored in a memory. The Processor is a CPU (Central Processing Unit), a Processing device, an arithmetic device, a microprocessor, or a DSP (Digital Signal Processor).
When a part or all of the functions of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66 are realized by a processor, the part or all of the functions are realized by the processor and software, firmware, or a combination of the software and firmware. The software or firmware is described as a program and stored in the memory. The processor reads and executes the program stored in the memory, thereby realizing a part or all of the functions of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66.
When part or all of the functions of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66 are realized by a processor, the main control processing device 6 has a memory for storing a program to be executed finally in a program step executed by part or all of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66. The program stored in the memory may be a program for causing a computer to execute a flow or a method executed by a part or all of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66.
Examples of the Memory include nonvolatile or volatile semiconductor memories such as RAM (Random Access Memory), ROM (Read Only Memory), flash Memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (registered trademark), magnetic disks, flexible disks, optical disks, compact disks, mini disks, and DVDs (Digital Versatile Disk).
A part or all of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66 included in the main control processing device 6 included in the touch panel system 1 according to the embodiment may be implemented by a processing circuit.
The processing circuitry is dedicated hardware. The processing Circuit may be a single Circuit, a complex Circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof.
The plurality of functions of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66 may be implemented by software or firmware as a part of the plurality of functions, and dedicated hardware as the rest of the plurality of functions. As described above, the plurality of functions of the communication control unit 61, the receiving unit 62, the display control unit 63, the 1 st communication unit 65, and the processing unit 66 can be realized by hardware, software, firmware, or a combination thereof.
Some or all of the functions of the 2 nd communication unit 71 and the detection unit 73 included in the touch panel controller 7 included in the touch panel system 1 according to the embodiment may be realized by a processor executing a program stored in a memory. The memory is a memory for storing a program for causing a part or all of the program steps executed by the 2 nd communication unit 71 and the detection unit 73 to be finally executed. An example of such a memory is a semiconductor memory. Part or all of the functions of the 2 nd communication unit 71 and the detection unit 73 may be realized by a processing circuit.
The configuration shown in the above embodiment is an example of the contents of the present invention, and may be combined with other known techniques, and a part of the configuration may be omitted or modified within a range not departing from the gist of the present invention.
Description of the reference symbols
1 touch panel system, 2 programmable logic controller, 3 input device, 4 operator, 5 electrostatic capacitance type touch panel, 6 main control processing device, 7 touch panel controller, 8 display device, 61 communication control section, 62 receiving section, 63 display control section, 64 1 st storage section, 65 st communication section, 66 processing section, 71 nd 2 nd communication section, 72 nd 2 nd storage section, 73 detecting section.
Claims (18)
1. A touch panel system characterized by having:
an electrostatic capacitance type touch panel;
a master processing device including a 1 st storage unit that stores information indicating each of a plurality of sampling frequencies, and a 1 st communication unit that outputs data indicating a sampling frequency selected by a user from among the plurality of sampling frequencies indicated by the information stored in the 1 st storage unit; and
a touch panel controller including a 2 nd communication unit that receives the data output by the 1 st communication unit included in the main control processing device, a 2 nd storage unit that stores the data received by the 2 nd communication unit, and a detection unit that detects a touch on the electrostatic capacitance-type touch panel at the sampling frequency indicated by the data stored in the 2 nd storage unit,
the information stored by the 1 st storage section further includes information each showing each of a plurality of set values for a threshold value that determines sensitivity at the time of detecting a touch to the electrostatic capacitance type touch panel, the number of sampling times for 1 touch to the electrostatic capacitance type touch panel, an allowable range for deciding an allowable range that has been touched, that is, an allowable range of a difference between a maximum value and a minimum value of coordinates touched on the electrostatic capacitance type touch panel in a case where sampling is performed a plurality of times for 1 touch to the electrostatic capacitance type touch panel,
the data output by the 1 st communication unit also shows a threshold value, a sampling number, and an allowable range of a difference value selected by the user,
the detection unit detects a touch on the capacitive touch panel at the sampling frequency, the threshold value, the number of sampling times, and an allowable range of the difference value indicated by the data.
2. A touch panel system characterized by having:
an electrostatic capacitance type touch panel;
a master processing device including a 1 st storage unit that stores information indicating each of a plurality of sampling frequencies, and a 1 st communication unit that outputs data indicating a sampling frequency selected by a user among the plurality of sampling frequencies indicated by the information stored in the 1 st storage unit; and
a touch panel controller including a 2 nd communication unit that receives the data output by the 1 st communication unit included in the main control processing device, a 2 nd storage unit that stores the data received by the 2 nd communication unit, and a detection unit that detects a touch on the capacitive touch panel at the sampling frequency indicated by the data stored in the 2 nd storage unit,
the information stored by the 1 st storage section is information that determines each of a plurality of firmware,
each of the plurality of firmware individually determines a sampling frequency that determines a detection cycle of a touch to the electrostatic capacitance type touch panel, a threshold value that determines a sensitivity at the time of detecting a touch to the electrostatic capacitance type touch panel, a number of samples for 1 touch to the electrostatic capacitance type touch panel, an allowable range for deciding an allowable range that has been touched, that is, an allowable range of a difference value between a maximum value and a minimum value of touched coordinates on the electrostatic capacitance type touch panel in a case where a plurality of samples are sampled for 1 touch to the electrostatic capacitance type touch panel,
the data output by the 1 st communication part shows a firmware selected by the user among the plurality of firmware,
the detection unit detects a touch on the capacitive touch panel in accordance with firmware selected by the user.
3. The touch panel system according to claim 2,
the display device displays information indicating the firmware selected by the user and the usage environment of the capacitive touch panel.
4. The touch panel system according to claim 2,
the master processing apparatus further includes a receiving unit that receives additional information indicating firmware different from the plurality of firmware and indicating each of the sampling frequency, the threshold, the number of times of sampling, and an allowable range of the difference,
the 1 st storage unit further stores the additional information received by the reception unit,
the 1 st communication unit outputs data indicating the firmware selected by the user among the plurality of firmware and the firmware indicated by the additional information.
5. The touch panel system according to claim 4,
further comprising a display device for displaying information indicating the plurality of pieces of firmware and the firmware indicated by the additional information,
the receiving unit receives a selection of one of the plurality of firmware and the firmware indicated by the additional information.
6. The touch panel system according to claim 2,
further comprising a display device for displaying information indicating the plurality of firmware,
the master processing apparatus further includes a receiving unit that receives a selection of one of the plurality of firmware.
7. Touch panel system according to claim 1 or 2,
further comprising a display device for displaying information representing the plurality of sampling frequencies,
the master processing apparatus further includes a receiving unit that receives a selection of one of the plurality of sampling frequencies.
8. Touch panel system according to claim 1 or 2,
the main control processing device further includes a receiving unit that receives additional information indicating a sampling frequency that is different from the plurality of sampling frequencies and that determines a detection cycle of a touch to the electrostatic capacitance type touch panel,
the 1 st storage unit further stores the additional information received by the reception unit,
the 1 st communication unit outputs data indicating a sampling frequency selected by the user from among the plurality of sampling frequencies and the sampling frequency indicated by the additional information.
9. The touch panel system according to claim 8,
further comprising a display device for displaying information indicating the plurality of sampling frequencies and the sampling frequency indicated by the additional information,
the receiving unit receives a selection of one of the plurality of sampling frequencies and the sampling frequency indicated by the additional information.
10. A display, comprising:
a 1 st storage unit that stores information indicating each of a plurality of sampling frequencies; and
a 1 st communication unit that outputs data indicating a sampling frequency selected by a user from the plurality of sampling frequencies indicated by the information stored in the 1 st storage unit,
the information stored by the 1 st storage section further includes information each showing each of a plurality of set values for a threshold value determining sensitivity at the time of detecting a touch to an electrostatic capacitance type touch panel, the number of sampling times for 1 touch to the electrostatic capacitance type touch panel, an allowable range for deciding an allowable range of having been touched, that is, an allowable range of a difference between a maximum value and a minimum value of coordinates touched on the electrostatic capacitance type touch panel in a case where sampling is performed a plurality of times for 1 touch to the electrostatic capacitance type touch panel,
the data output by the 1 st communication unit also shows a threshold value, a sampling number, and an allowable range of a difference value selected by the user.
11. A display device, comprising:
a 1 st storage unit that stores information indicating each of a plurality of sampling frequencies; and
a 1 st communication unit that outputs data indicating a sampling frequency selected by a user from the plurality of sampling frequencies indicated by the information stored in the 1 st storage unit,
the information stored by the 1 st storage section is information that determines each of a plurality of firmware,
each of the plurality of firmware individually determines a sampling frequency that determines a detection cycle of a touch to the electrostatic capacitance type touch panel, a threshold value that determines a sensitivity at the time of detecting a touch to the electrostatic capacitance type touch panel, a number of samples for 1 touch to the electrostatic capacitance type touch panel, an allowable range for deciding that the touch has been made, that is, an allowable range of a difference value between a maximum value and a minimum value of touched coordinates on the electrostatic capacitance type touch panel in a case where the samples are made a plurality of times for 1 touch to the electrostatic capacitance type touch panel,
the data output by the 1 st communication unit represents the firmware selected by the user among the plurality of firmware.
12. The display of claim 11,
the display device displays information indicating the firmware selected by the user and the usage environment of the capacitive touch panel.
13. The display of claim 11,
further comprising a receiving unit that receives additional information indicating firmware different from the plurality of firmware and indicating each of the sampling frequency, the threshold, the number of samplings, and an allowable range of the difference,
the 1 st storage unit further stores the additional information received by the reception unit,
the 1 st communication unit outputs data indicating the firmware selected by the user among the plurality of firmware and the firmware indicated by the additional information.
14. The display of claim 13,
further comprising a display device for displaying information indicating the plurality of pieces of firmware and the firmware indicated by the additional information,
the receiving unit receives a selection of one of the plurality of firmware and the firmware indicated by the additional information.
15. The display device according to claim 11, further comprising:
a display device that displays information indicating the plurality of pieces of firmware; and
a receiving unit that receives a selection of one of the plurality of firmware.
16. The display device according to claim 10 or 11, further comprising:
a display device that displays information indicating the plurality of sampling frequencies; and
a receiving unit that receives a selection of one of the plurality of sampling frequencies.
17. The display according to claim 10 or 11,
further comprising a receiving unit for receiving additional information indicating a sampling frequency different from the plurality of sampling frequencies and determining a detection cycle of a touch to the electrostatic capacity type touch panel,
the 1 st storage unit further stores the additional information received by the receiving unit,
the 1 st communication unit outputs data indicating a sampling frequency selected by the user from among the plurality of sampling frequencies and the sampling frequency indicated by the additional information.
18. The display of claim 17,
further comprising a display device for displaying information indicating the plurality of sampling frequencies and the sampling frequency indicated by the additional information,
the receiving unit receives a selection of one of the plurality of sampling frequencies and the sampling frequency indicated by the additional information.
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| CN105528117A (en) * | 2016-01-28 | 2016-04-27 | 青岛海信移动通信技术股份有限公司 | Method and device for acquiring scanning frequency of touch panel |
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| JP6682056B1 (en) | 2020-04-15 |
| CN114026528A (en) | 2022-02-08 |
| WO2020261577A1 (en) | 2020-12-30 |
| JPWO2020261577A1 (en) | 2021-09-13 |
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