Display apparatus, display system, identification method, and program

Abstract

To provide a display apparatus capable of identifying the cause of calibration failure.SOLUTION: A display apparatus according to one aspect of the present invention includes a touch panel on an operation screen and comprises: a calculation unit for performing signal processing of detected signals detected after calibrating the detection sensitivity of input means that touches the touch panel, and calculating signal values of the detected signals; a determination unit for determining whether the calibration has been successful based on the calculated signal values of the detection signals; and an identification unit for, if the calibration fails, identifying the cause of the calibration failure based on a distribution of signal values of the detected signals.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a display device, a display system, a specifying method, and a program. [Background technology]

[0002] There is a known technique for performing calibration to correct the coordinates of a capacitive touch panel. Patent Document 1 discloses a technique for eliminating miscalibration of a touch panel by determining the output value output by the touch panel and performing calibration. Summary of the Invention [Problem to be solved by the invention]

[0003] To avoid the effects of noise-induced fluctuations in output, calibration of the capacitive touch panel output must be performed in a state where no input means is in contact with the touch panel and where there is no power supply noise. In a device that repeats calibration after a calibration failure, calibration failures may continue, and if a calibration failure occurs, the cause may not be identified. This may make it impossible to identify ways to improve the calibration.

[0004] In order to solve the above-mentioned problems, an object of the present invention is to provide a display device that can identify the cause of calibration failure. [Means for solving the problem]

[0005] A display device according to one aspect of the present invention is a display device that includes a touch panel on an operation screen, and is equipped with: a calculation unit that calibrates the detection sensitivity of an input means that contacts the touch panel, performs signal processing of the detected detection signal, and calculates the signal value of the detection signal; a determination unit that determines whether the calibration was successful or not based on the calculated signal value of the detection signal; and an identification unit that, if the calibration fails, identifies the cause of the calibration failure based on the distribution of the signal values ​​of the detection signal. [Effects of the Invention]

[0006] According to the display device of the present invention, it is possible to identify the cause of the calibration failure. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a diagram showing a configuration of a display device according to an embodiment of the present invention; [Figure 2] FIG. 10 is a diagram showing an example of signal distribution when calibration fails in a display device according to an embodiment of the present invention. [Figure 3] FIG. 1 is a hardware configuration diagram of a display device according to an embodiment of the present invention. [Figure 4] 1 is a flowchart illustrating a method for identifying an object according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. In the drawings, the same components are designated by the same reference numerals, and redundant explanations may be omitted.

[0009] [Embodiment] <Overall configuration of display device 1> 1 is a diagram showing the configuration of a display device 1 according to an embodiment of the present invention. As shown in the figure, the display device 1 includes a touch panel 11, a calculation unit 12, a determination unit 13, an identification unit 14, a display unit 15, and a storage unit 16. The display device may be included in, for example, an image forming device. The image forming device is, for example, an MFP (Multifunction Peripheral / Printer / Product) that incorporates functions such as scanning, copying, printing, and facsimile in a single housing.

[0010] The display device 1 includes a touch panel 11 on an operation screen. For example, a capacitive touch panel is used as the touch panel 11, and a sensor detection signal resulting from an input means that touches the touch panel 11 is output. The touch panel 11 may have, for example, 31 sensors arranged vertically and 54 sensors arranged horizontally, and may detect an input means that is in contact with or close to the touch panel 11 by the detection signal generated by the sensors.

[0011] The calculation unit 12 calibrates the detection sensitivity of the input means that touches the touch panel 11, processes the detected detection signal, and calculates the signal value of the detection signal. The calculation of the signal value may be performed using coordinates.

[0012] The determination unit 13 determines whether the calibration has been successful or not based on the calculated signal values ​​of the detection signals. The determination unit 13 determines that the calibration has been successful when the signal values ​​of the detection signals in the region R corresponding to the input means contacted on the touch panel 11 are not distributed higher than in other regions and the signal values ​​of the detection signals in the coordinates of the entire touch panel 11 are equal to or less than a threshold. The determination unit 13 determines that the calibration has failed when the signal values ​​of the detection signals in the region R corresponding to the input means contacted on the touch panel 11 are distributed higher than in other regions, or when the signal values ​​of the detection signals in the coordinates of the entire touch panel 11 are equal to or less than a threshold.

[0013] If the calibration fails, the identifying unit 14 identifies the cause of the calibration failure based on the distribution of the signal values ​​of the detection signals. Specifically, if the signal values ​​of the detection signals in an area corresponding to the input means that has been touched on the touch panel 11 are distributed higher than in other areas, the identifying unit 14 identifies that the cause of the calibration failure is the detection of the input means that has been touched on the touch panel 11.

[0014] Furthermore, the identification unit 14 identifies that the cause of the calibration failure is power supply noise when the signal values ​​of the detection signals are not distributed such that the signal values ​​of the detection signals in the area corresponding to the input means contacted on the touch panel 11 are higher than in other areas, and the signal values ​​of the detection signals at the coordinates of the entire touch panel 11 exceed a threshold value.

[0015] The display unit 15 displays the result of the judgment by the judgment unit 13 as to whether the calibration was successful or not, and the cause of the failure if the calibration was unsuccessful.

[0016] The storage unit 16 stores the result of whether the calibration was successful or not determined by the determination unit 13, and the cause of the failure if the calibration was unsuccessful. The storage unit 16 may include a non-volatile memory such as a RAM (Random Access Memory) as a storage means.

[0017] If there is an input to the touch panel 11 by a user or an influence of power supply noise during calibration, the state of the detection signal output by the touch panel 11 is used as the reference, which may cause false detection or a decrease in sensitivity. If the cause of the calibration failure is unknown, there is a problem in that it is not possible to identify a means to improve the calibration.

[0018] In the display device 1 according to this embodiment, the determination unit 13 determines whether the calibration was successful or not based on the signal values ​​of the detection signals detected during the calibration. The identification unit 14 identifies the cause of the calibration failure based on the distribution of the signal values ​​of the detection signals. The display unit 15 then displays the result of whether the calibration was successful or not, and the cause of the failure if the calibration failed.

[0019] According to the display device 1 of this embodiment, the user can easily determine whether the calibration was successful or not. Furthermore, if the calibration fails, the user can easily identify the cause of the failure.

[0020] Figure 2 is a diagram showing an example of signal distribution when calibration fails in a display device according to one embodiment of the present invention. In Figure 2, (a) is a diagram showing an area where an input means is detected, and (b) is a diagram showing the distribution of detection signals when an input means is detected. R in Figure 2 indicates the area where the input means is detected.

[0021] When an input tool is detected in region R shown in Fig. 2(a), the signal values ​​of the detection signal are distributed higher than in other regions, as shown in Fig. 2(b). In such a case, the identifying unit 14 identifies that the cause of the calibration failure is the detection of the input tool touching the touch panel 11.

[0022] <Hardware configuration of display device 1> 3 is a hardware configuration diagram of a display device 1 according to one embodiment of the present invention. The display device 1 functions as an information processing device (computer). The display device 1 includes a CPU (Central Processing Unit) 201, a RAM 202, a ROM (Read Only Memory) 203, and an I / O (Input / Output) 204, which are interconnected by a bus.

[0023] The CPU 201 executes a program 210 using the RAM 202 as a work memory to control the entire display device 1. The ROM 203 is a non-volatile memory such as a flash memory, and stores the program 210. The CPU 201 executes the program 210 to provide the functions described below. The I / O 204 is an input / output interface.

[0024] <Display system> The display system may be embodied as a display system in which the functions of the display device 1 are distributed among multiple devices. In this case, the display system includes the display device 1 including a touch panel 11 on an operation screen. The display system includes a calculation unit that calibrates the detection sensitivity of an input means that touches the touch panel 11, performs signal processing on the detected detection signal, and calculates a signal value. The display system also includes a determination unit that determines whether the calibration was successful based on the calculated signal value of the detection signal. The display system also includes an identification unit that, if the calibration fails, identifies the cause of the calibration failure based on the distribution of the signal values ​​of the detection signal.

[0025] <Identification method> 4 is a flowchart illustrating a method for specifying an object according to one embodiment of the present invention, which uses a display device 1 including a touch panel 11 on an operation screen.

[0026] First, the calculation unit 12 calibrates the detection sensitivity of the input means that touches the touch panel 11 (step S101). The calculation unit 12 processes the detected detection signal and calculates the signal value of the detection signal (step S102).

[0027] Next, the determination unit 13 determines whether the calibration was successful or not based on the calculated signal value of the detection signal. Specifically, if the signal values ​​of the detection signal in the area of ​​the touch panel 11 corresponding to the touched input means are distributed higher than in other areas, the determination unit 13 determines that the calibration has failed (Yes in step S103). At this time, the identification unit 14 identifies that the cause of the calibration failure is the detection of the touched input means on the touch panel 11 (step S104). The display unit 15 displays that the calibration has failed and that the cause of the failure is the detection of the input means (step S105).

[0028] If the signal values ​​of the detection signals are not distributed such that the signal values ​​in the area of ​​the touch panel 11 corresponding to the input means that has been touched are higher than those in other areas (No in step S103), and the signal values ​​of the detection signals at the coordinates of the entire touch panel 11 exceed the threshold value, the determination unit 13 determines that the calibration has failed (Yes in step S106). At this time, the identification unit 14 identifies that the cause of the calibration failure is power supply noise (step S107). The display unit 15 displays that the calibration has failed and that the cause of the failure is power supply noise (step S108).

[0029] If the signal values ​​of the detection signals are not distributed such that the signal values ​​in the area of ​​the touch panel 11 corresponding to the touched input means are higher than those in other areas (No in step S103) and the signal values ​​of the detection signals in the coordinates of the entire touch panel 11 are equal to or less than the threshold value (No in step S106), the determination unit 13 determines that the calibration has been successful (step S109). The display unit 15 displays that the calibration has been successful (step S110).

[0030] The storage unit 16 stores the result of the determination by the determination unit 13 as to whether the calibration was successful or not, and the cause of the failure if the calibration was unsuccessful (step S111).

[0031] The identification method according to one embodiment of the present invention is carried out through these steps. However, the identification method according to one embodiment of the present invention may include other steps as appropriate depending on the measurement conditions, measurement environment, etc.

[0032] <Action and effect> In the display device 1 according to this embodiment, the determination unit 13 determines whether the calibration was successful or not based on the signal values ​​of the detection signals detected during the calibration. The identification unit 14 identifies the cause of the calibration failure based on the distribution of the signal values ​​of the detection signals. The display unit 15 then displays the result of whether the calibration was successful or not, and the cause of the failure if the calibration failed.

[0033] According to the display device 1 of this embodiment, the user can easily determine whether the calibration was successful or not. Furthermore, if the calibration fails, the user can easily identify the cause of the failure.

[0034] Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and various modifications and improvements are possible within the scope of the present invention.

[0035] Each function of the above-described embodiments can be realized by one or more processing circuits. Here, the term "processing circuit" in this specification includes a processor programmed to perform each function by software, such as a processor implemented by an electronic circuit, as well as devices such as an ASIC (Application Specific Integrated Circuit), a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), and conventional circuit modules designed to perform each of the above-described functions.

[0036] For example, aspects of the present invention are as follows.

[0037] <1> A display device including a touch panel on an operation screen, a calculation unit that performs signal processing of a detected signal by calibrating the detection sensitivity of an input means that touches the touch panel, and calculates a signal value of the detected signal; a determination unit that determines whether the calibration has been successful based on the calculated signal value of the detection signal; an identification unit that, when the calibration fails, identifies a cause of the failure of the calibration based on a distribution of signal values ​​of the detection signal; A display device comprising:

[0038] <2> The determination unit determining that the calibration has failed when the signal values ​​of the detection signals in an area of ​​the touch panel corresponding to the touched input means are distributed higher than those in other areas; The identification unit Identifying that the cause of the calibration failure is the detection of the input means touching the touch panel. The aforementioned <1> The display device according to claim 1.

[0039] <3> The determination unit determining that the calibration has failed if the signal values ​​of the detection signals are not distributed such that the signal values ​​of the detection signals in the area corresponding to the input means that has been touched on the touch panel are higher than those in other areas, and the signal values ​​of the detection signals at the coordinates of the entire touch panel exceed a threshold value; The identification unit Identifying that the cause of the calibration failure is power supply noise; The aforementioned <2> The display device according to claim 1.

[0040] <4> The determination unit determining that the calibration has been successful when the signal values ​​of the detection signals are not distributed such that the signal values ​​of the detection signals in the area of ​​the touch panel corresponding to the input means that has been touched are higher than those in other areas, and the signal values ​​of the detection signals at the coordinates of the entire touch panel are equal to or less than a threshold value; The aforementioned <3> The display device according to claim 1.

[0041] <5> The apparatus further includes a display unit that displays the result of the determination by the determination unit as to whether the calibration was successful or not, and the cause of the failure if the calibration was unsuccessful. The aforementioned <1> From the above <4> 10. The display device according to claim 9, wherein:

[0042] <6> The apparatus further includes a storage unit that stores the result of the determination by the determination unit as to whether the calibration was successful or not, and a cause of failure if the calibration was unsuccessful. The aforementioned <1> From the above <5> 10. The display device according to claim 9, wherein:

[0043] <7> A display system including a display device including a touch panel on an operation screen, a calculation means for performing signal processing of a detected signal by calibrating the detection sensitivity of an input means that touches the touch panel, and calculating a signal value; a determination means for determining whether the calibration has been successful or not based on the calculated signal value of the detection signal; an identification unit that, if the calibration fails, identifies a cause of the failure of the calibration based on a distribution of the signal values ​​of the detection signal; A display system comprising:

[0044] <8> A method for specifying a display device including a touch panel on an operation screen, a calculation means for performing signal processing of a detected signal by performing calibration of the detection sensitivity of an input means that touches the touch panel, and calculating a signal value of the detected signal; a step of determining whether the calibration has been successful or not based on the calculated signal value of the detection signal by a determination means; an identifying step of identifying a cause of the failure of the calibration based on a distribution of signal values ​​of the detection signal when the calibration has failed; Including specific methods.

[0045] <9> A display device including a touch panel on the operation screen, a calculation means for performing signal processing of a detected signal by calibrating the detection sensitivity of an input means that touches the touch panel, and calculating a signal value of the detected signal; a determination means for determining whether the calibration has been successful or not based on the calculated signal value of the detection signal; an identification means for identifying a cause of the failure of the calibration based on a distribution of the signal values ​​of the detection signal when the calibration has failed; A program to function as a [Explanation of symbols]

[0046] 1 Display device 11 Touch Panel 12 Calculation section 13 Judgment section 14 Specific section 15 Display 16 Memory section [Prior art documents] [Patent documents]

[0047] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-197860

Claims

1. A display device including a touch panel on an operation screen, a calculation unit that performs signal processing of a detected signal by calibrating the detection sensitivity of an input means that touches the touch panel, and calculates a signal value of the detected signal; a determination unit that determines whether the calibration has been successful based on the calculated signal value of the detection signal; an identification unit that, when the calibration fails, identifies a cause of the failure of the calibration based on a distribution of signal values ​​of the detection signal; A display device comprising:

2. The determination unit determining that the calibration has failed when the signal values ​​of the detection signals in an area of ​​the touch panel corresponding to the touched input means are distributed higher than those in other areas; The identification unit Identifying that the cause of the calibration failure is the detection of the input means touching the touch panel. The display device according to claim 1 .

3. The determination unit determining that the calibration has failed if the signal values ​​of the detection signals are not distributed such that the signal values ​​of the detection signals in the area corresponding to the input means that has been touched on the touch panel are higher than those in other areas, and the signal values ​​of the detection signals at the coordinates of the entire touch panel exceed a threshold value; The identification unit Identifying that the cause of the calibration failure is power supply noise; The display device according to claim 2 .

4. The determination unit determining that the calibration has been successful when the signal values ​​of the detection signals are not distributed such that the signal values ​​of the detection signals in the area of ​​the touch panel corresponding to the input means that has been touched are higher than those in other areas, and the signal values ​​of the detection signals at the coordinates of the entire touch panel are equal to or less than a threshold value; The display device according to claim 3 .

5. The apparatus further includes a display unit that displays the result of the determination by the determination unit as to whether the calibration was successful or not, and the cause of the failure if the calibration was unsuccessful. The display device according to claim 1 .

6. The apparatus further includes a storage unit that stores the result of the determination by the determination unit as to whether the calibration was successful or not, and a cause of failure if the calibration was unsuccessful. The display device according to claim 1 .

7. A display system including a display device including a touch panel on an operation screen, a calculation means for performing signal processing of a detected signal by calibrating the detection sensitivity of an input means that touches the touch panel, and calculating a signal value; a determination means for determining whether the calibration has been successful or not based on the calculated signal value of the detection signal; an identification unit that, if the calibration fails, identifies a cause of the failure of the calibration based on a distribution of the signal values ​​of the detection signal; A display system comprising:

8. A method for specifying a display device including a touch panel on an operation screen, a calculation means for performing signal processing of a detected signal by performing calibration of the detection sensitivity of an input means that touches the touch panel, and calculating a signal value of the detected signal; a step of determining whether the calibration has been successful or not based on the calculated signal value of the detection signal by a determination means; an identifying step of identifying a cause of the failure of the calibration based on a distribution of signal values ​​of the detection signal when the calibration has failed; Including specific methods.

9. A display device including a touch panel on the operation screen, a calculation means for performing signal processing of a detected signal by calibrating the detection sensitivity of an input means that touches the touch panel, and calculating a signal value of the detected signal; a determination means for determining whether the calibration has been successful or not based on the calculated signal value of the detection signal; an identification means for identifying a cause of the failure of the calibration based on a distribution of the signal values ​​of the detection signal when the calibration has failed; A program to function as a

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