JP2015230518A - Method of correcting deviation in detection position in touch panel device, touch panel device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of correcting a deviation of a detection position for a touch panel device, a touch panel device, and a program capable of alleviating operator's burden and adjusting a partially-occurring deviation of the detection position.SOLUTION: A method of correcting a deviation of a detection position for a touch panel device executes an overall correction (S3); displays a line or a point for confirming a result of the overall correction (S4); acquires input coordinates input to trace the line or the point (S6); and sets an additional correction point in an area including the deviation (S9) and executes partial correction (S10) if there is a deviation equal to or higher than a threshold between theoretical coordinates of the line or the point for confirming the result of the overall correction and the acquired input coordinates deviate.

Description

  The present invention relates to a detection position shift correction method, a touch panel device, and a program in a touch panel device.

  Conventionally, a touch panel automatic correction apparatus that matches a touch input position on a touch panel with a display position on a screen is known (see, for example, Patent Document 1). This touch panel automatic correction device can automatically correct the touch input position to match the display position on the screen, but it requires an imaging device such as a camera, a pressure jig, and a mechanism for moving the pressure jig. Yes, the device is large.

  Conventionally, there is known a correction method for a touch panel device that can adjust the displacement of the entire detection area and adjust the displacement of the detection position that partially occurs (see, for example, Patent Document 2).

JP 2006-4089 A

JP 2013-152649 A

  In the correction method of the above-mentioned patent document 2, it is possible to adjust the deviation of the detection position that partially occurs, but it is necessary for the operator himself to determine the deviation and determine the correction range. There is a problem that a lot of burden is placed on the operator because of the need for knowledge and skills.

  It is an object of the present invention to provide a detection position deviation correction method, a touch panel apparatus, and a program in a touch panel device that can reduce a burden on an operator and adjust a partial deviation in detection position.

  In order to achieve the above object, the correction method of the displacement of the detection position in the touch panel device disclosed in the specification is applied to the coordinates of a plurality of correction points on the touch panel and the plurality of correction points input by operating the touch panel. Performing a first correction for matching corresponding input coordinates, displaying an image on a touch panel based on the result of the first correction, obtaining input coordinates by tracing the image, and coordinates of the image And an additional correction point is set on the touch panel when the input coordinates acquired by tracing the image have a deviation of a threshold value or more, and the correction point input from the touch panel and the coordinates of the correction point and the additional correction point The second correction for matching the input coordinates corresponding to the additional correction point is performed.

  The touch panel device disclosed in the specification executes a first correction for matching the coordinates of a plurality of correction points on the touch panel with input coordinates corresponding to the plurality of correction points input by operating the touch panel. Means, second means for displaying an image on the touch panel based on the result of the first correction, third means for acquiring input coordinates input by tracing the image, coordinates of the image and the image When the input coordinates obtained by tracing the difference between the input coordinates and the threshold value are more than a threshold, the fourth means for setting an additional correction point on the touch panel, and the correction input from the touch panel to the coordinates of the correction point and the additional correction point And fifth means for executing a second correction for matching the input coordinates corresponding to the points and the additional correction points.

  A program disclosed in the specification executes a first correction that causes a computer to match input coordinates corresponding to a plurality of correction points input by operating the touch panel to coordinates of a plurality of correction points on a touch panel. First means, second means for displaying an image on a touch panel based on the result of the first correction, third means for acquiring input coordinates input by tracing the image, coordinates of the image and the image Fourth means for setting an additional correction point on the touch panel when the input coordinates obtained by tracing are shifted by a threshold value or more, and the correction point input from the touch panel to the coordinates of the correction point and the additional correction point And it is made to function as a 5th means which performs the 2nd correction | amendment which makes the input coordinate corresponding to an additional correction point correspond.

  According to the present invention, it is possible to reduce the burden on the operator as compared with the prior art, and to adjust the partial displacement of the detected position.

FIG. 1 is a configuration diagram of a touch panel device according to the present embodiment. (A)-(F) is a figure explaining the shift | offset | difference of the touch detection position in a touch panel. (A) And (B) is a figure explaining the method of correct | amending the shift | offset | difference of a touch detection position. (A) is a figure which shows an example of the input screen of a correction point. (B) is a figure which shows an example of the correction result when the shift | offset | difference of a touch detection position is correct | amended. (C) is a figure which shows the other example of the correction result when the shift | offset | difference of a touch detection position is correct | amended. (A) is a figure which shows the area | region set in order to determine whether an additional correction point is required. (B) is a figure which shows the line input into the touchscreen driver by tracing the line for a correction result confirmation. (C) is a figure which shows the point input into the touch panel driver by tracing the point for a correction result confirmation. (D) is a figure which shows the example of the additional correction point displayed on a display. (E) is a figure showing other examples of an additional correction point displayed on a display. It is a flowchart which shows the process performed with a touchscreen apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of a touch panel device according to the present embodiment. The touch panel device 30 of FIG. 1 includes a touch panel 1, a touch panel controller 2, and a computer 3 that are arranged on a display 50. The touch panel controller 2 controls the operation of the touch panel 1 and transmits coordinate data of the touch position to the computer 3. The computer 3 includes a CPU (Central Processing Unit) 11, a RAM (Random Access Memory) 12, a hard disk drive (HDD) 13, an interface (IF) 14A, and a video interface (IF) 14B. The IF 14 is connected to the touch panel controller 2.

  The HDD 13 includes an application program 15, an operating system (OS) 16, and a touch panel driver 17. The application program 15, the operating system (OS) 16, and the touch panel driver 17 are appropriately read by the CPU 11 into the RAM 12 and executed. For example, the CPU 11 that executes the touch panel driver 17 corresponds to first to fifth means.

  The application program 15 is a correction program for correcting a shift in a position where a touch is detected (hereinafter referred to as a touch detection position). The OS 16 has a data storage area 16A for storing various data, coordinate data of correction points to be described later, and conversion formula data for correcting the shift of the touch detection position set by the correction program. A part of the storage area of the HDD 13 or RAM 12 is allocated as the data storage area 16A. The touch panel driver 17 performs correction calculation processing and coordinate conversion processing executed by the correction program.

  Information input with a finger or a pen on the touch panel 1 is input to the computer 3 via the touch panel controller 2. Further, information for requesting the operator's touch input in the correction program is displayed on the display 50 via the video IF 14B. Since the contact area (area where the operator touches) of the touch panel 1 is made of a transparent member, information for requesting the operator's touch input displayed on the display 50 is displayed on the touch panel 1. looks like.

  2A to 2F are diagrams for explaining the shift of the touch detection position on the touch panel 1. FIG. 2A shows a normal state of the touch panel 1 (a state in which no deviation occurs in the touch position). In the center of the touch panel 1, a contact area 100 and a detection area 101 of the touch panel 1 are arranged. The contact area 100 is an area where a finger or a pen comes into contact, and is indicated by a one-dot chain line. The detection area 101 is an area detected as a coordinate position when the finger or pen is actually brought into contact with the contact area 100, and is indicated by a dotted line. If the touch panel 1 is normal, the contact area 100 and the detection area 101 coincide. However, when the touch detection position (detection region 101) is shifted, the contact region 100 does not coincide with the detection region 101.

  For example, FIGS. 2B to 2F show a case where a touch detection position shift occurs. In FIG. 2B, the detection area 101 is shifted upward with respect to the contact area 100. In FIG. 2C, the detection area 101 is shifted downward with respect to the contact area 100. In FIG. 2D, the detection area 101 is shifted leftward with respect to the contact area 100. In FIG. 2E, the detection area 101 is shifted to the right with respect to the contact area 100. In FIG. 2F, a part 101 </ b> A of the detection area 101 is partially distorted, and the detection area 101 is displaced from the contact area 100. Here, in the case of FIG. 2B to FIG. 2E, by performing overall correction on the detection area 101 (that is, the detection area 101 is moved so as to coincide with the contact area 100), The shift in the touch detection position can be eliminated.

  However, in the case shown in FIG. 2F, a part of the detection area 101A that is distorted cannot be sufficiently adjusted only by performing overall correction on the detection area 101. That is, only by performing the overall correction, the shift in the part 101A of the detection area is not eliminated, and the shift in the touch detection position remains. The touch detection position shift correction method according to the present embodiment can correct a partially distorted touch detection position shift like the part 101A of the detection region.

  FIGS. 3A and 3B are diagrams for explaining a method of correcting the shift of the touch detection position. This correction method is a method called enlargement / reduction correction, but is an example of a correction method, and the present embodiment is not limited to this correction method.

  In the enlargement / reduction correction, the correction of coordinates for correcting the shift of the touch detection position from the theoretical coordinates of the correction points set on the screen (two points in the example of FIG. 3A) and the input coordinates corresponding to the correction points. Find the formula. The theoretical coordinates are coordinates held in advance by the application program 15 (that is, absolute value coordinates on the touch panel 1 on which correction points are set, which are managed by the computer 3), and the input coordinates are touched by the operator. The coordinates detected as the operation position when 1 is pressed.

  First, the application program 15 acquires the theoretical coordinates of the two correction points A1 and A2 shown in FIG. 3A and the input coordinates detected by the operator's touch, and the theoretical coordinates of the acquired two correction points A1 and A2. The input coordinates are held in the data storage area 16A. The theoretical coordinates of the correction points A1 and A2 are held in advance by the application program 15, and the input coordinates of the correction points A1 and A2 are acquired from the touch panel 1 via the touch panel controller 2 by an operator's touch input. Here, it is assumed that the theoretical coordinates of the correction point A1 are (X1, Y1) and the input coordinates of the correction point A1 are (x1, y1). Further, it is assumed that the theoretical coordinates of the correction point A2 are (X2, Y2) and the input coordinates of the correction point A2 are (x2, y2).

The touch panel driver 17 calculates the magnification (a, b) of the X coordinate and the Y coordinate for making the input coordinate system coincide with the theoretical coordinate system based on the theoretical coordinates and the input coordinates of the correction points A1 and A2. The X-coordinate magnification a and the Y-coordinate magnification b are calculated by the following equations (1) and (2), respectively.
a = (X2-X1) / (x2-x1) (1)
b = (Y2-Y1) / (y2-y1) (2)

Next, in order to deal with the case where the detection area 101 (that is, the touch detection position) is shifted vertically and horizontally with respect to the contact area 100, the touch panel driver 17 sets the shift amount (c, d) of the input coordinates as follows: Calculated according to (3) and (4).
c = x1- (X1 * a) (3)
d = y1- (Y1 * b) (4)

With the above calculation, the correction calculation coefficients “a” to “d” are calculated. The touch panel driver 17 creates the following correction calculation formulas (5) and (6) using the coefficients “a” to “d”, and the correction calculation formulas (5) and (6) together with the coefficients “a” to “d”. ) Is stored in the data storage area 16A. When the touch panel driver 17 performs correction calculation of input coordinates, the touch panel driver 17 reads the correction calculation formulas (5) and (6) from the data storage area 16A and corrects the input coordinates. Here, the input coordinates before correction are (X ′, Y ′), and the input coordinates after correction are (X, Y).
X = aX′−c (5)
Y = bY′−d (6)

  Here, in order to explain the principle of enlargement / reduction correction, two-point correction is taken as an example. In the case of the nine-point correction shown in FIG. 3B, the principle of enlargement / reduction correction can be applied, and the touch panel driver 17 divides the detection area 101 of the touch panel 1 into four, and the correction calculation coefficient “ By calculating “a” to “d” and creating a correction calculation formula, correction correction of input coordinates can be performed in each region. Further, by increasing the correction points for calculating the correction calculation coefficient, it is possible to create a highly accurate correction coefficient.

  Next, a method of displaying the correction result when the shift of the touch detection position is corrected will be described. FIG. 4A is a diagram illustrating an example of a correction point input screen. FIG. 4B is a diagram illustrating an example of a correction result when the shift of the touch detection position is corrected. FIG. 4C is a diagram illustrating another example of the correction result when the shift of the touch detection position is corrected. 4A to 4C, the horizontal direction is the X axis, and the vertical direction is the Y axis.

  First, in order to correct the displacement of the touch detection position, the application program 15 outputs data requesting input of correction points B1 to B9 to the display 50 via the video IF 14B as shown in FIG. . The operator presses a position corresponding to the correction points B1 to B9 displayed on the touch panel 1. Data of each correction point input by touching (that is, input coordinates corresponding to the correction points B1 to B9) is notified to the application program 15 via the touch panel controller 2. The theoretical coordinates of the correction points B1 to B9 and the input coordinates corresponding to the correction points B1 to B9 are stored in the data storage area 16A. Note that the correction points B1 to B9 in FIG. 4A are correction points before execution of the overall correction described later.

  As shown in FIG. 3B, the touch panel driver 17 divides the detection area of the touch panel 1 into four areas, calculates correction calculation coefficients in each area, creates a correction calculation formula, and calculates the correction calculation formula. Correction is performed using input coordinates corresponding to the correction points B1 to B9. Here, the correction is performed so that the input coordinates corresponding to the correction points B1 to B9 coincide with the theoretical coordinates of the correction points B1 to B9. This correction may be referred to as a first correction or an overall correction.

  The touch panel driver 17 provides a correction result confirmation line or point as shown in FIG. 4B or FIG. 4C via the video IF 14B so that the operator can confirm the correction result after completion of the overall correction. Output to the display 50. The line or point for confirming the correction result is a point or line displayed at a portion where the effect of the correction using the correction point is the weakest, that is, an intermediate position between adjacent correction points. This makes it easier to detect the deviation of the theoretical coordinates and input coordinates of the correction result confirmation line or point, and makes it easy to determine whether partial correction described later is necessary.

FIG. 4B shows correction result confirmation lines L1 to L4. The touch panel driver 17 calculates the X coordinate of the intermediate position between the correction point B4 and the correction point B5 by the following calculation formula (7), and a vertical straight line passing through the X coordinate is set as a correction result confirmation line L1. .
X coordinate of line L1 = (X coordinate of correction point B5−X coordinate of correction point B4) / 2 + (X coordinate of correction point B4) (7)

Further, the touch panel driver 17 calculates the X coordinate of the intermediate position between the correction point B6 and the correction point B5 by the following calculation formula (8), and a vertical straight line passing through the X coordinate is a correction result confirmation line L2. And
X coordinate of line L2 = (X coordinate of correction point B6−X coordinate of correction point B5) / 2 + (X coordinate of correction point B5) (8)

Further, the touch panel driver 17 calculates the Y coordinate of the intermediate position between the correction point B5 and the correction point B2 by the following calculation formula (9), and a horizontal straight line passing through the Y coordinate is a correction result confirmation line L3. And
Y coordinate of line L3 = (Y coordinate of correction point B5−Y coordinate of correction point B2) / 2 + (Y coordinate of correction point B2) (9)

Further, the touch panel driver 17 calculates the Y coordinate of the intermediate position between the correction point B8 and the correction point B5 by the following calculation formula (10), and a horizontal straight line passing through the Y coordinate is a correction result confirmation line L4. And
Y coordinate of line L4 = (Y coordinate of correction point B8−Y coordinate of correction point B5) / 2 + (Y coordinate of correction point B5) (10)
The X and Y coordinates of the correction points in the calculation formulas (7) to (10) are the coordinates after correction.

FIG. 4C shows points C1 to C12 for checking the correction result.
The touch panel driver 17 calculates the coordinates of the point C1 by the following calculation formulas (11) and (12).
X coordinate of point C1 = (X coordinate of correction point B2−X coordinate of correction point B1) / 2 + (X coordinate of correction point B1) (11)
Y coordinate of point C1 = Y coordinate of correction point B2 (12)

The touch panel driver 17 calculates the coordinates of the point C2 by the following calculation formulas (13) and (14).
X coordinate of point C2 = (X coordinate of correction point B3−X coordinate of correction point B2) / 2 + (X coordinate of correction point B2) (13)
Y coordinate of point C2 = Y coordinate of correction point B2 (14)

The touch panel driver 17 calculates the coordinates of the point C3 by the following calculation formulas (15) and (16).
X coordinate of point C3 = X coordinate of correction point B4 (15)
Y coordinate of point C3 = (Y coordinate of correction point B4−Y coordinate of correction point B1) / 2 + (Y coordinate of correction point B1) (16)

The touch panel driver 17 calculates the coordinates of the point C4 by the following calculation formulas (17) and (18).
X coordinate of point C4 = (X coordinate of correction point B5−X coordinate of correction point B4) / 2 + (X coordinate of correction point B4) (17)
Y coordinate of point C4 = (Y coordinate of correction point B5−Y coordinate of correction point B2) / 2 + (Y coordinate of correction point B2) (18)

The touch panel driver 17 calculates the coordinates of the point C5 by the following calculation formulas (19) and (20).
X coordinate of point C5 = (X coordinate of correction point B6−X coordinate of correction point B5) / 2 + (X coordinate of correction point B5) (19)
Y coordinate of point C5 = (Y coordinate of correction point B5−Y coordinate of correction point B2) / 2 + (Y coordinate of correction point B2) (20)

The touch panel driver 17 calculates the coordinates of the point C6 by the following calculation formulas (21) and (22).
X coordinate of point C6 = X coordinate of correction point B6 (21)
Y coordinate of point C6 = (Y coordinate of correction point B6−Y coordinate of correction point B3) / 2 + (Y coordinate of correction point B3) (22)

The touch panel driver 17 calculates the coordinates of the point C7 by the following calculation formulas (23) and (24).
X coordinate of point C7 = X coordinate of correction point B4 (23)
Y coordinate of point C7 = (Y coordinate of correction point B7−Y coordinate of correction point B4) / 2 + (Y coordinate of correction point B4) (24)

The touch panel driver 17 calculates the coordinates of the point C8 by the following calculation formulas (25) and (26).
X coordinate of point C8 = (X coordinate of correction point B5−X coordinate of correction point B4) / 2 + (X coordinate of correction point B4) (25)
Y coordinate of point C8 = (Y coordinate of correction point B8−Y coordinate of correction point B5) / 2 + (Y coordinate of correction point B5) (26)

The touch panel driver 17 calculates the coordinates of the point C9 by the following calculation formulas (27) and (28).
X coordinate of point C9 = (X coordinate of correction point B6−X coordinate of correction point B5) / 2 + (X coordinate of correction point B5) (27)
Y coordinate of point C9 = (Y coordinate of correction point B8−Y coordinate of correction point B5) / 2 + (Y coordinate of correction point B5) (28)

The touch panel driver 17 calculates the coordinates of the point C10 by the following calculation formulas (29) and (30).
X coordinate of point C10 = X coordinate of correction point B6 (29)
Y coordinate of point C10 = (Y coordinate of correction point B9−Y coordinate of correction point B6) / 2 + (Y coordinate of correction point B6) (30)

The touch panel driver 17 calculates the coordinates of the point C11 by the following calculation formulas (31) and (32).
X coordinate of point C11 = (X coordinate of correction point B8−X coordinate of correction point B7) / 2 + (X coordinate of correction point B7) (31)
Y coordinate of point C11 = Y coordinate of correction point B8 (32)

The touch panel driver 17 calculates the coordinates of the point C12 by the following calculation formulas (33) and (34).
X coordinate of point C12 = (X coordinate of correction point B9−X coordinate of correction point B8) / 2 + (X coordinate of correction point B8) (33)
Y coordinate of point C12 = Y coordinate of correction point B8 (34)
In addition, the X coordinate and Y coordinate of each correction point in the calculation formulas (11) to (34) are coordinates after correction by the overall correction.

  Next, a method in which the touch panel driver 17 displays additional correction points necessary for partial correction (corresponding to the second correction) on the display 50 will be described. FIG. 5A is a diagram illustrating a region set for determining whether or not an additional correction point is necessary. FIG. 5B is a diagram showing lines input to the touch panel driver 17 by tracing a correction result confirmation line. FIG. 5C is a diagram showing points input to the touch panel driver 17 by tracing the correction result confirmation points. FIG. 5D is a diagram illustrating an example of additional correction points displayed on the display 50. FIG. 5E is a diagram illustrating another example of additional correction points displayed on the display 50. The correction points B1 to B9 in FIGS. 5A, 5D, and 5E are correction points after the overall correction is performed, and the correction points in FIG. A point where each of B1 to B9 is moved by a certain amount in the same direction is shown.

  First, as shown in FIG. 5A, the touch panel driver 17 determines a straight line connecting the correction point B2 and the correction point B8, a correction point B4, and a correction point B6 in order to determine whether or not an additional correction point is necessary. The detection area of the touch panel 1 is divided into four by the straight line connecting the two, and the divided area is set as an area for determining the necessity of additional correction points.

  Next, as shown in FIG. 5B, the touch input coordinates are input to the touch panel driver 17 by the operator tracing the correction result confirmation line in FIG. 4B. In FIG. 5B, the thin dotted line indicates the correction result confirmation line in FIG. 4B, and the thick dotted line is input to the touch panel driver 17 by tracing the correction result confirmation line in FIG. 4B. A line indicating the locus of the input coordinates is shown. In FIG. 5B, a line indicating the locus of the input coordinates input to the touch panel driver 17 by tracing the correction result confirmation line is shown together with the correction result confirmation line. The indicated line may or may not be displayed on the display 50. When the line indicating the locus of the input coordinates is displayed on the display 50 by tracing the correction result confirmation line, the operator can confirm the deviation. Whether the line input to the touch panel driver 17 is displayed on the display 50 by tracing the correction result confirmation line can be set by the operator using the touch panel driver 17.

  Further, as shown in FIG. 5C, even if the operator inputs the touch input coordinates to the touch panel driver 17 by tracing (touching) the correction result confirmation point in FIG. Good. In FIG. 5C, a small circle indicates a correction result confirmation point in FIG. 4C, and a large circle is input to the touch panel driver 17 by tracing the correction result confirmation point in FIG. 4C. Indicates the point corresponding to the input coordinate. In FIG. 5C, the points corresponding to the input coordinates input to the touch panel driver 17 by tracing the correction result confirmation points in FIG. 4C are shown together with the correction result confirmation points. The point corresponding to the input coordinates may be displayed on the display 50 or may not be displayed. When the points input to the touch panel driver 17 are displayed on the display 50 by tracing the correction result confirmation points, the operator can confirm the deviation. The operator can set whether or not to display on the display 50 the points input to the touch panel driver 17 by tracing the correction result confirmation points.

  The touch panel driver 17 compares the coordinates input by tracing the correction result confirmation line or point with the coordinates of the correction result confirmation line or point, thereby determining whether or not a deviation greater than the threshold has occurred. Determine. The threshold value for detecting the deviation can be set to an arbitrary value by editing the touch panel driver 17. If there is no deviation greater than the threshold value, partial correction is not necessary, and the touch panel driver 17 ends the process without causing the display 50 to display additional correction points.

  If a deviation equal to or greater than the threshold value has occurred, partial correction is necessary, and the touch panel driver 17 specifies an area for determining whether or not an additional correction point having a deviation has occurred. For example, in FIGS. 5B and 5C, it can be seen that the touch panel driver 17 has a shift in the area 4, so that the touch panel driver 17 is in the area 4 as shown in FIG. The additional correction points D1 to D5 are set, and the additional correction points D1 to D5 are displayed on the display 50.

  The touch panel driver 17 sets the additional correction point D1 in the middle of the correction points B5 and B6, sets the additional correction point D2 in the middle of the correction points B5 and B8, and sets the additional correction point D3 in the middle of the correction points B5 and B9. The additional correction point D4 is set in the middle of the correction points B6 and B9, and the additional correction point D5 is set in the middle of the correction points B8 and B9. Thus, since the additional correction point is set in the middle of the adjacent correction points, the touch panel driver 17 can automatically calculate the coordinates of the additional correction points by calculating the average value of the coordinates of the correction points. .

  In addition, the touch panel driver 17 further divides the region 4 into four parts using the additional correction points D1 to D5 and the correction points B5, B6, B8, and B9, so that the touch described with reference to FIGS. A method of correcting the deviation of the detection position can be executed. That is, the touch panel driver 17 is arranged so that the correction points included in the region 4 and the additional correction points are in the same arrangement and the same number as the nine correction points used in the correction for the entire detection region of the touch panel 1. Since five additional correction points are set in the region 4, the partial correction for the region 4 can be executed by the same method (that is, the same method) as the overall correction. The same arrangement relationship means that when the area 4 is enlarged, four correction points and five additional correction points included in the area 4 overlap with nine correction points used for the overall correction of the touch panel 1. means.

  In FIG. 5D, the touch panel driver 17 sets the additional correction points D1 to D5 in the region 4 and displays the additional correction points D1 to D5 on the display 50. As shown in FIG. The touch panel driver 17 may set only the additional correction point D3 in the region 4 and display the additional correction point D3 on the display 50. As described above, if there are two points, the enlargement / reduction correction can be executed, so that the partial correction can be executed even with one additional correction point. In this case, the touch panel driver 17 divides the region 4 into four, the combination of the correction point B5 and the additional correction point D3, the combination of the correction point B6 and the additional correction point D3, the combination of the correction point B8 and the additional correction point D3, and the correction. Partial correction (enlargement / reduction correction) is executed for each combination of the point B9 and the additional correction point D3.

  FIG. 6 is a flowchart illustrating processing executed by the touch panel device 30.

  First, the application program 15 displays data requesting input of correction points B1 to B9 as shown in FIG. 4A on the display 50 via the video IF 14B (step S1). Thereby, the operator presses the position corresponding to the correction points B1 to B9 displayed on the touch panel 1. The theoretical coordinates of the correction points B1 to B9 are stored in the data storage area 16A.

  The touch panel driver 17 acquires touch input data (that is, input coordinates corresponding to the correction points B1 to B9) (step S2), and inputs corresponding to the correction points B1 to B9 to the theoretical coordinates of the correction points B1 to B9. An overall correction for matching the coordinates is performed (step S3). Here, correction for aligning the entire detection area of the touch panel 1 with the screen of the display 50 is performed.

  Next, the touch panel driver 17 displays a correction result confirmation line or point on the display 50 via the video IF 14B after the entire correction is completed (step S4). The touch panel driver 17 divides the detection area of the touch panel 1 into four by a straight line connecting the correction point B2 and the correction point B8 and a straight line connecting the correction point B4 and the correction point B6, and the divided area is an additional correction point. Is set as an area for determining whether or not it is necessary (step S5). The touch panel driver 17 acquires the coordinates of the input line or point when the operator traces the correction result confirmation line or point (step S6).

  The touch panel driver 17 compares the coordinates input by tracing the correction result confirmation line or point with the theoretical coordinates of the correction result confirmation line or point, thereby causing a deviation greater than a threshold value between the two coordinates. It is determined whether or not there is (step S7). If there is no deviation greater than the threshold between the input coordinates and the theoretical coordinates (NO in step S7), this process ends. If a deviation equal to or greater than the threshold has occurred (YES in step S7), the touch panel driver 17 specifies an area for determining the necessity of an additional correction point where a deviation in coordinates equal to or greater than the threshold has occurred (step S7). S8).

  The touch panel driver 17 sets an additional correction point in the area for determining whether or not the specified additional correction point is necessary, and displays it on the display 50 (step S9). Thereafter, the operator presses the additional correction point. As a result, the input coordinates of the additional correction point are acquired. The touch panel driver 17 adds the input coordinates of the correction points included in the correction points and the theoretical coordinates of the additional correction points included in the area for determining whether or not the specified additional correction points are necessary (already input at the time of the overall correction). ) And partial correction to match the input coordinates of the additional correction points (step S10), and the process is terminated.

  As described above, according to the present embodiment, the touch panel driver 17 inputs the theoretical coordinates of the plurality of correction points on the touch panel 1 held in advance corresponding to the plurality of correction points input from the touch panel 1. The whole correction for matching the coordinates is executed (step S3), the line or point for confirming the result of the whole correction is displayed (step S4), and the input coordinates inputted by tracing the line or point for checking the result of the whole correction Is acquired (step S6). Further, the touch panel driver 17 determines that the region including the deviation is present when the theoretical correction of the line or point for confirming the result of the overall correction and the input coordinate acquired in step S6 are more than a threshold (YES in step S7). An additional correction point is set (step S9), and the input coordinates corresponding to the correction point and the additional correction point input from the touch panel 1 are matched with the theoretical coordinates of the correction point and the additional correction point included in the region including the deviation. The partial correction to be performed is executed (step S10).

  As described above, the touch panel driver 17 determines the shift, sets an additional correction point in the area including the shift, and executes the partial correction. Therefore, as in the conventional case, the operator himself can determine the shift and the correction range. No need to make a decision. Accordingly, it is possible to reduce the burden on the operator and to adjust the deviation of the detection position that occurs partially.

  The same effect as that of the above-described embodiment can also be obtained by supplying a software program for realizing the functions of the touch panel device 30 to the computer 3 and the CPU 11 reading and executing the program.

  The present invention is not limited to the above-described embodiment, and can be implemented with various modifications within a range not departing from the gist thereof.

1 Touch Panel 2 Touch Panel Controller 3 Computer 11 CPU
12 RAM
13 Hard disk drive (HDD)
14A interface (IF)
14B video interface (IF)
15 Application program 16 Operating system (OS)
17 Touch Panel Driver 30 Touch Panel Device 50 Display

Claims (8)

Performing a first correction to match the coordinates of a plurality of correction points on the touch panel with the input coordinates corresponding to the plurality of correction points input by operating the touch panel;
Based on the result of the first correction, an image is displayed on the touch panel,
Obtain the input coordinates entered by tracing the image,
If there is a deviation of a threshold value or more between the coordinates of the image and the input coordinates obtained by tracing the image, an additional correction point is set on the touch panel,
A second correction is executed to match the coordinates of the correction point and the additional correction point with the input coordinates corresponding to the correction point input from the touch panel and the additional correction point. Correction method.   When the coordinates of the image and the input coordinates obtained by tracing the image have a deviation greater than or equal to a threshold value, the same arrangement relation and the same number as the plurality of correction points used in the first correction are used. The correction method of the detection position shift in the touch panel device according to claim 1, wherein the additional correction point is set.   3. The detection position shift correction method in the touch panel device according to claim 1, wherein the image is a line or a point located in the middle of adjacent correction points.   4. The touch panel device according to claim 1, wherein the displayed image and an image corresponding to input coordinates when the image is traced are displayed on the same screen. 5. Correction method for displacement of the detection position.   5. The detection position shift correction method in the touch panel device according to claim 1, wherein the additional correction point is a point located in the middle of adjacent correction points. Dividing the detection area for detecting pressing of the touch panel into a plurality of areas,
When there is a shift greater than or equal to a threshold in the coordinates of the image and the input coordinates obtained by tracing the image, an area including the shift is specified from a detection area that detects pressing of the touch panel divided into a plurality of parts,
6. The correction method of the detection position shift in the touch panel device according to claim 1, wherein the additional correction point is set in the specified region. First means for executing a first correction to match the coordinates of a plurality of correction points on the touch panel with input coordinates corresponding to the plurality of correction points input by operating the touch panel;
A second means for displaying an image on the touch panel based on the result of the first correction;
Third means for acquiring input coordinates input by tracing the image;
A fourth means for setting an additional correction point on the touch panel when the coordinates of the image and the input coordinates obtained by tracing the image have a shift greater than or equal to a threshold value;
And a fifth means for performing a second correction for matching the coordinates of the correction point and the additional correction point with the input coordinates corresponding to the correction point and the additional correction point input from the touch panel. . Computer
First means for executing a first correction for matching the coordinates of a plurality of correction points on the touch panel with the input coordinates corresponding to the plurality of correction points input by operating the touch panel;
A second means for displaying an image on the touch panel based on the result of the first correction;
A third means for acquiring input coordinates input by tracing the image;
The fourth means for setting an additional correction point on the touch panel when the coordinates of the image and the input coordinates obtained by tracing the image have a shift equal to or greater than a threshold, and the coordinates of the correction point and the additional correction point, A program which functions as a fifth means for executing a second correction for matching input coordinates corresponding to a correction point and an additional correction point input from the touch panel.

Images