JPH04191920A - Touch position correcting method in touch panel device - Google Patents

Abstract

PURPOSE:To improve the reliability of input operation by calculating the new valid reaction position of a touch panel from the differential data of the coordinate value of a read touch position and the coordinate value of the display position of a display screen set in advance, moving the valid reaction position of the touch panel and correcting. CONSTITUTION:When the viewpoint of an operator is a position B, for instance, a read coordinate value is (Xb, Yb) and difference calculating means 4 calculates the difference of the coordinate value (Xb, Yb) and a coordinate value (Xa, Ya) of the valid reaction position of a touch panel 2 from them, that is, a correcting value. Then, a valid reaction position calibrating means 5 calculates the coordinate value of the new valid reaction position by an expression to add the correcting value to the initial coordinate value of the valid reaction position. The valid reaction position calibrating means 5 moves the coordinate value of the former valid reaction position until then of the touch panel 2 to the coordinate value of the new valid reaction position and corrects based on the coordinate value of the valid reaction position obtained in this way. Thus, the reliability of input operation is improved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is installed in financial institutions such as banks and storefronts of large-scale retail stores, etc., and is equipped with a touch panel that recognizes input operations by touching with a finger or the like. The present invention relates to a touch position correction method for correcting a deviation between a display position on a display screen and a full screen position caused by the position of an operator's eyes with respect to a screen panel device.

[Prior Art] FIG. 7 is a schematic cross-sectional view of a main part showing the configuration of a touch panel device, and FIG. 8 is a plan view thereof.

In Figures 7 and 8, 1 is a display screen of a display device such as a CRT or LCD. This display screen 1 is divided into several areas according to items such as withdrawal transactions, and symbols such as switches, characters, etc. are displayed in correspondence with each area.

2 is a transparent touch panel provided on the upper surface of the display screen 1 so as to cover the display screen 1, and this touch panel 2 corresponds to several display areas displayed on the display screen 1, An effective reaction area of the touch panel (an area that becomes a so-called touch switch) is set, which is an area where an input can be recognized by touching the touch panel.

In other words, since the display screen 1 and the touch panel 2 are arranged so as to overlap, the operator can select a desired part of the plurality of areas displayed on the display screen, that is, the displayed pattern. When you touch the display area with your finger or the like from above the touch panel 2, a touch sensor (not shown) detects the position of the area touched by the finger, etc., and calculates the position based on the XY coordinates. By associating the coordinate position of the display screen with the corresponding position, it is possible to recognize which operation item has been inputted.

For example, as shown in FIG. 8, if two selectable display areas DI and D2 are displayed on the display screen 1,
These two display areas D1. Corresponding to D2, the touch panel 2 has a display area DI.

Effective reaction areas DI' and D2' that react when a finger or the like touches a portion located directly above D2 are set.

Here, when the operator touches the touch position ffT1 to operate the display area D1, this touch position T1 is the effective reaction area DI of the touch panel 2 corresponding to the display area D1.
Since the entire image is contained within ', it is determined that the display area DI has been selected.

In addition, if the touched area slightly covers the effective reaction area DI', such as touch position T2, the proportion of the area covered (for example, 30% or more),
50% or more) determines whether the input is valid or invalid, that is, whether it is selected or not.

Or, if it spans both the effective reaction areas D1' and D2' as in the case of IT3, the one that falls within the area is determined to be more effective and is selected. It is determined that

However, at this time, if both are large enough to be effective and overlap the effective reaction area, both are made invalid.

[Problem to be solved by the invention]

However, in the touch panel device described above, there is a slight gap t between the display screen 1 and the touch panel 2, as shown in FIG. Therefore, when an operator looks at the display screen 1 through the touch panel 2 when operating this touch panel device, the viewpoint changes depending on the operator's standing position, height difference, etc., and the display screen changes depending on the difference in viewpoint. Even if the display position of 1 is the same, there will be a difference in the position where the touch baffle is actually touched.

In other words, as shown in the figure, when the viewpoint is directly above display area 0, the touch position that the operator attempts to touch is A', and this is usually the effective response of the touch panel 2. Since this is the range of the area, the operator who has the viewpoint A can touch the normal effective reaction area and perform reliable operations.

However, if the operator stands far away from the device or is short and his/her viewpoint is at position B, the touch position that the operator attempts to touch will be B', and the display area will be 0.
This means that the touch panel 2 is out of the effective range A' corresponding to the touch panel 2. Furthermore, when the viewpoint is at position C, the touch position is further shifted to position C'.

In this way, the touch position touched by the operator may be misaligned due to the difference in viewpoint, and even though the operator is supposed to be touching the top of the display area, the touch position and the display area are actually misaligned, making it difficult to select The problem is that you cannot touch the effective response area of the touch panel that corresponds to the display area you are trying to display, and it is determined that you have not touched it, or that a different item has been selected, resulting in no normal response. was there.

The present invention has been made to solve the above-mentioned problems, and the responsiveness is reduced due to the misalignment between the display area and the touch position caused by different viewpoints depending on the operator. It is an object of the present invention to provide an excellent touch panel device that prevents malfunctions and malfunctions, has good operability, and allows reliable input operations.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention allows an operator to actually check the coordinate values of the center of the display position displayed on the display screen of a display device and touch panels arranged so as to overlap on the display screen. The center position of the effective reaction area of the touch panel is calculated from the difference data obtained by the difference calculation means. The touch panel device is equipped with an effective reaction position calibration means for correcting the coordinate values of the touch panel, and when the operator operates the touch pulse to perform an operation, the touch position is read by the touch position reading unit, and the coordinates of the read touch position are read. The value is compared with the coordinate value on the display screen, and the difference is calculated by a difference calculation means.

Furthermore, a new effective reaction position of the touch panel is calculated from this calculated difference data, and the old effective reaction position of the touch panel is corrected by moving to the new effective reaction position, so that the touch position of the operator corresponds to the display position of the display screen. It was designed to make you do it.

In addition, in order to match the operator's touch position with the display position on the display screen, in addition to the above, the effective reaction position of the touch panel is fixed as is, and the display position is changed so that the display position on the display screen corresponds to the touch position. A calibration means is provided, and the difference is only a correction amount calculated from the coordinate value of the display position on the display screen obtained by the difference calculation means and the coordinate value of the touch position read from the touch position actually touched by the operator. We decided to correct this by moving the display position on the display screen.

[For production]

According to the method described above, when the device becomes operational and the operator touches the touch panel to start operation, the touch position touched by the operator is detected and the coordinates of the display position already displayed on the display screen are detected. By comparing with the value
It is determined how much the operator's operating position deviates from the actually set position.

Therefore, the effective reaction position of the touch panel or the display position of the display screen is moved by the amount of this deviation to a position corresponding to each operator, and the display position and the effective reaction position are made to match.

This prevents the touch position from shifting during the touch operation, improves responsiveness, and improves the reliability of the input operation.

〔Example) Examples of the present invention will be described below using the oral side.

FIG. 1 is a flowchart of a touch position correction method showing a first embodiment of the present invention, FIG. 2 is a schematic side sectional view of a touch panel device, and FIG. 3 is a plan view of the touch panel device.

First, the configuration of the touch panel device will be explained with reference to FIGS. 2 and 3. 1 is a display screen of a CRT display as a display device, and it provides instructions to the operator about the operation of the device and some operation switches, etc. It is divided into predetermined areas and displayed using letters, numbers, designs, etc.

2, when the operator touches a finger or the like, a touch sensor (not shown) detects the touched area, and selects a predetermined area displayed on the display screen 1, that is, which switch among the operating switches is selected. It is a touch panel that recognizes the number of operations, and has the same number of effective reaction ranges that correspond to multiple display areas (operation switches, etc.) displayed on the display screen. It has a so-called tantis inch area that can be recognized.

A, B, and C are the operator's viewpoints when operating the touch panel device, and A', B', and C' are the respective viewpoints A.
, B, and C show the visible position of the display position O when viewing the display screen 1 through the touch panel 2.

FIG. 3 shows this as viewed from above the display screen 1 through the touch panel 2 using χY coordinates.
The coordinate value of A' above is (Xa.

Ya), B' on touch panel 2 when viewed from viewpoint B
The coordinate values of are (Xb, Yb).

At this time, the coordinate values (χa, Ya) of A', that is, the position of the touch panel 2 directly above the display position, are the basic initial values when operating the device.

Further, an area of a predetermined size surrounded by a broken line around these coordinate positions A' and B' becomes an effective reaction area of the touch panel 2.

Next, a control block diagram related to the touch position correction method will be explained with reference to FIG.

In the figure, 3 is a coordinate value reading means for detecting the reaction position on the touch panel 2 touched by an operator's finger for manual operation using XY coordinates, and 4 is the coordinate value read by this coordinate value reading means 3. This is a difference calculation means that calculates the difference between the value and a preset initial value, for example, the coordinate value of B' (Xb, Yb) in FIG. 3 and the display position 0 point on the display screen 1 as the initial value. The difference from (Xa, Ya), which is the coordinate value of A' of the touch panel 2 located directly above the , is calculated using the formula (χb-Xa, Yb-Ya).

5 is an effective reaction position calibration means for correcting the coordinate values of the effective reaction position (a predetermined position in the effective reaction area, for example, the center position) of the touch panel 2, and the calculated value calculated by the difference calculation means 4, that is, the correction amount; The amount of deviation as (
χb-a, Yb-a) is set to the initial value (Xa, Ya
), and the value obtained from this (X a+χb-a, Ya
+Yb-a) is calculated as the coordinate value of the new effective reaction position, and the coordinates of the effective reaction position of Yu-Chipafuru 2 are moved to the coordinates of this new effective reaction position and corrected.

Reference numeral 6 denotes a screen control section for displaying display items on the display screen 1.

Further, 7 controls each of these means and determines which display item has been operated based on the read information on the evening and 7-chi positions and the calculated difference data.

Next, a touch position correction method for the touch panel device having the above-described configuration will be explained using the flowchart of FIG. Note that the symbol S shown below represents a step in the processing operation.

First, when the device is powered on and starts operating,
The control unit 7 sends information on the display position of the display screen 1 to the display control unit 6, and information on the coordinate values of the effective reaction position corresponding to the display position on the display screen 1 is sent to the difference calculation means 4. Do (Sl).

Based on this transmitted information, the display screen I displays operation items and the like. (S2) In order to perform an operation, the operator stands in front of the device and performs an input operation by touching the top of the touch panel 2 with a finger or the like at a position corresponding to the display screen 1 that displays the desired item to be operated. (S3).

At this time, the operator's viewpoint may be at position A, B, or C, as shown in FIG. 2, depending on the operator's standing position relative to the touch panel device, height difference, etc. In the case of a position other than A, the display position displayed on the display screen l appears shifted from the actual position, and the user touches each shifted position.

When the operator touches the touch panel 2, the coordinate value of the touched position is read by the coordinate value reading means 3 (S4).

Here, if the operator's viewpoint is, for example, position B, the read coordinate values are (Xb, Yb), and this read information is transmitted from the difference calculation means 4 to the effect reaction position calibration means 5. (S5).

The difference calculation means 4 calculates the information sent in S5, that is, the coordinate value (x
b, yb) and the coordinate values (Xa, Ya) of the effective reaction position of the touch panel 2 that were received in Sl, the difference between them, that is, the correction value, is calculated by the formula (■) shown below.
S6).

(Xb-Xa, Yb-Ya) -Equation (2) The correction values (Xba, Yba) thus obtained are transmitted to the effective reaction position calibration means 5 (S7).

Then, the effective reaction position calibration means 5 calculates a new coordinate value of the effective reaction position by adding this correction value to the initial coordinate value of the effective reaction position using the following formula (2) (S8).

(Xa + χb-a, Ya + Yb-a) - Formula ■Based on the coordinate values of the effective reaction position obtained in this way, the effective reaction position calibration means 5 calculates the coordinate values of the old effective reaction position of the touch panel 2. is moved to the coordinate values of this new effective reaction position and corrected (S9).

Furthermore, when the coordinate values of this new effective reaction position are sent to the control unit 7, the control unit 7 determines which of the multiple operation items displayed on the display screen 1 has been operated (S
IO).

Note that the above-mentioned correction operation for the effective response position of the touch panel is performed only for the first operation, and from the second operation onward, the difference between the effective response position and the actual evening/nace position is not calculated, and the difference data from the first time is used. is used to compare and correct the coordinate values of the effective reaction position, and this series of controls can be realized by software.

Further, on the touch panel 2, an area that responds corresponding to the display area of the display screen 1, that is, an effective reaction area is set within a predetermined range centered on the coordinate value of the effective reaction position. By correcting the coordinates of the touch position through the action, the effective reaction area will also be translated by the same amount.

Furthermore, if the operator changes or the viewpoint changes during the process, there will be a difference in the correction value, but this is because the difference is calculated at each operation, and the correction value is calculated based on the statistics of several operations. If it is determined that the value has changed, a new correction value is calculated,
This can be done by using that value from now on.

Further, FIG. 5 is a flowchart showing the second embodiment, and FIG. 6 is a control routine of the second embodiment.

This second embodiment calculates the difference between the effective reaction position of the touch panel initially set in the first embodiment and the touch position during actual operation by adjusting the coordinates of the effective reaction position of the touch panel. While the correction is made by moving the value, the correction is made by moving the display position of the display screen 1.

As a result, in FIG. 6, the parts that are structurally different from the first embodiment are a difference calculation means 8 that calculates a correction value for the display position, and a display position calibration section 9 as a correction means. The calculation means 8 calculates the difference between the coordinate value of the display position on the display screen 1 that was displayed at the start of operation and the coordinate value of the touch position by the operator (i.e., correction N) as (χb-
Xa.

Yb-Xa), and from this calculated correction amount, the new display position of the display screen 1 (χa-Xb-a).

Ya-Yb-a) is calculated, and the old display position is moved to this new display position for correction.

The operation flowchart is shown below.

First, when the device is powered on and starts operating, the difference calculation means 8 is cleared to set the difference data to 10 (S
l).

Next, the control unit 7 transmits the coordinate values of the initial value of the display position set in advance to the display position calibration means 9 (S2).
.

At this time, since the difference data of the difference calculation means 4 is 0, the display position calibration means 9 inputs the coordinate values (χa1Ya) of the display position obtained in S2 by the screen control section 6 to the display screen 1.
(S3).

In order to perform an operation, an operator stands in front of the device and performs an input operation by touching the top of the touch panel 2 with a finger or the like at a position corresponding to the display screen 1 displaying the desired item to be operated ( S4).

At this time, the viewpoint of the operator differs depending on the position where the operator stands with respect to the touch panel device, height difference, etc., as in the first embodiment, and therefore the display position of the display screen 1 when viewed through the touch baffle 2. and the actual display position. Therefore, the user touches the position of the touch puffer 2 that is different from the coordinate values displayed on the display screen 1.

When the operator touches the touch panel 2, the coordinate value of the touched position is read by the coordinate value reading means 3 (S5).

The read coordinate values (Xb, Yb) are sent to the difference calculation means 8 (S6).

Thereby, the difference calculating means 8 calculates the difference between the coordinate values (Xb, Yb) taken by the receiver in S6 and the coordinate values (χa, Ya) of the initial position taken by the receiver in S1, that is, A correction value is calculated using equation (2) (S7).

(χb-Xa, Yb-Ya) - 2■ The correction value thus obtained (X b-a, Y b-a
) is transmitted to the display position calibration means 9 (S7).

The display position calibration means 9 calculates the coordinates of the new display position by subtracting this correction value from the initial value using the following method (2) (S9).

(Xa-Xb-a, Ya -Yb-a) -Formula ■ Based on the coordinate values of the new display position obtained in this way, the display position calibration means 9 changes the display position of the display screen 1 to the old coordinate position that has been displayed until now. Move to a new coordinate position (SIO)
.

When this moved new coordinate value is sent to the control unit 7, the control unit 7 compares it with the coordinate value of the initial display position of the fixed effective reaction position of Tasotiva 2 and Le 2, and displays it on the display screen 1. It is determined which of the plurality of operation items has been operated (Sll).

Note that the display position correction operation described above is performed only for the first operation, as in the first embodiment, and is not performed from the second and subsequent operations, but comparative correction is performed based on the initial data. Control of a series of operations can also be realized using software.

Furthermore, the handling when the operator changes or the viewpoint changes during the process is the same as in the first embodiment.

(Effects of the Invention) As explained above, according to the present invention, a display device having a display screen, a display device provided to cover the display screen,
In a touch position correction method for a touch panel device that is equipped with a touch panel that recognizes input operations when touched by a finger, etc., the first correction method is to read the touch position at which an operator touches the touch panel to perform an operation. The read coordinate values of the touch position are compared with the preset coordinate values of the display position on the display screen, the difference is calculated by the difference calculation means, and the newly activated touch panel is calculated from the calculated difference data. The reaction position is calculated and the effective reaction position of the touch panel is moved to a new effective reaction position for correction.

In addition, as a second method, apart from the first method, the effective reaction position of the touch panel is fixed as it is, and a display position calibration means is provided so that the display position of the display screen corresponds to the touch position, and a difference calculation means is provided. The display position on the display screen is moved by the difference data as the correction amount calculated from the coordinate value of the display position on the display screen obtained in , and the coordinate value of the touch position read from the touch position actually touched by the operator. I tried to correct it.

According to this, the display position of the display screen and the effective reaction position of the touch panel, which occur because the viewpoint of the display screen and touch baffle differs due to differences in the operator's standing position with respect to the touch panel device, height, etc. This deviation can be eliminated by correcting the display position or effective reaction position for each operator, and the touch position will not be deviated due to differences in the viewpoints of the operators.

Therefore, even though the operator is touching the desired display position,
It is possible to get a normal reaction without being judged that you have not touched the item or that the wrong item has been selected. As a result, input operations become more reliable and
Moreover, the effect of improving operability can be obtained.

Further, it is possible to increase the tolerance in the positional relationship when assembling the display device and the touch panel, and it is also possible to improve the ease of assembly.

[Brief explanation of the drawing]

Fig. 1 is a flowchart of a touch position correction method showing a first embodiment of the present invention, Fig. 2 is a schematic side sectional view of a touch panel device, Fig. 3 is a plan view of the touch panel, and Fig. 4 is an effective response of the touch panel. FIG. 5 is a flowchart of a touch position correction method showing the second embodiment; FIG. 6 is a control block diagram for correcting the display position of the display screen; FIG. 7 is a control block diagram for correcting the position of the display screen; FIG. 8 is a schematic cross-sectional view of the main parts showing the configuration of the touch panel device, and FIG. 8 is a plan view thereof. 1... Display screen 2... Touch panel 3... Coordinate value reading means 4... Difference calculation means 5... Display position calibration means 6... Display control section 7... Control section 8. ...Difference calculation means 9...Effective reaction position calibration means Patent applicant: Oki Electric Industry Co., Ltd. Representative: Patent attorney Takashi Kanakura 2nd Φ! @4 Pregnant J (7) system immediately / picture 6
Country (jushi=showi'pi) 21!-L○ Export 8 country

Claims (1)

[Claims] 1. A display device having a display screen for displaying characters, designs, etc., and inputting display items displayed on the display screen by being placed so as to overlap with the display screen and being touched by a finger or the like. A touch position correction method for a touch panel device equipped with a touch panel having an effective reaction area for recognizing operations, the method comprising: when an operator operates the touch panel to perform an operation, the touch position is read by a touch position reading unit;
The coordinate value of the read touch position is compared with the coordinate value of the display position displayed on the display screen, the difference is calculated by the difference calculation means, and the new effective reaction position of the touch panel is calculated from this calculated difference data. A touch position correction method in a touch panel device, comprising: moving the effective reaction position of the touch panel to a new effective reaction position and correcting it. 2. A display device having a display screen that displays characters, designs, etc., and an effective reaction that is arranged to overlap the display screen and that recognizes input operations for display items displayed on the display screen by touching with a finger, etc. A touch position correction method in a touch panel device equipped with a touch panel having a region, the touch position being read by a touch position reading unit when an operator operates the touch panel to perform an operation;
The read coordinate values of the touch position are compared with the coordinate values of the display position displayed on the display screen, the difference is calculated by the difference calculation means, and the coordinates of the new display position on the display screen are calculated from this calculated difference data. A touch position correction method in a touch panel device, comprising: calculating a value, and correcting the display position of the display screen by moving it to a new display position.