JP2020074073A - Touch operation position determination device - Google Patents

Abstract

To allow a user to perform comfortable touch operation on a touch panel input device.SOLUTION: A touch operation position determination device (100) determines a touch operation position of a touch panel input device (300) detecting the touch operation position on a screen, and includes calculation means (120) which calculates an averaged touch operation position by applying averaging processing to the plurality of touch operation positions detected during a touch operation period from start to complete of the touch operation, and first determination means (120) which determines the touch operation position in the touch operation period on the basis of the calculated averaged touch operation position.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a technical field of a touch operation position determination device capable of determining a touch operation position on a screen, for example.

  In recent years, in a variety of fields such as smartphones, car navigation devices or tablet computers, a mechanism for inputting information by touch operation on the screen (briefly, operation of touching the screen with a finger) has been adopted. ..

  By the way, in a device adopting such a mechanism, erroneous determination of the touch operation position frequently occurs, for example, when the operation target is small or crowded. Techniques for preventing such erroneous determination are disclosed in Patent Documents 1 and 2, for example.

  According to the mobile terminal device disclosed in Patent Document 1, when a plurality of selection targets (expressed as links in the document) are present in the area touched by the user, they are enlarged and displayed. The user is again required to perform the touch operation. Therefore, it is said that it is possible to appropriately and surely specify the target selection target with a finger.

  According to the information processing device disclosed in Patent Document 2, when the user moves the touch position while maintaining the touch state at the touch position, a selectable operation based on the movement destination touch position that is the movement destination. The target (operation target item in the document) is determined, and display information indicating the operation target item is displayed on the touch panel display based on the destination touch position. Further, when the touched state is changed to the non-touched state, the processing based on the operation target item is performed. Therefore, it is said that the user can surely operate the desired operation target by moving the finger until the desired operation target item is selected.

JP 2012-73908 A JP, 2011-192173, A

  In a device using such a mechanism, generally, a plurality of touch operations are often continuously performed.

  Here, each of the devices disclosed in Patent Documents 1 and 2 requires a multi-step operation by the user to prevent erroneous determination of the touch operation position. Therefore, when a plurality of touch operations are continuously performed, the degree of physical and mental burdens on the user tends to increase. That is, the above-mentioned conventional technique has at least a technical problem that comfort is likely to be impaired.

  The present invention is made, for example, in view of such technical problems, and it is at least one of problems to be solved to provide a touch operation position determination device that enables a comfortable touch operation of a user. One

  In order to solve the problems described above, the touch operation position determination device is a touch operation position determination device that determines the touch operation position of a touch panel input device that detects the touch operation position on the screen, and from the start to the end of the touch operation. Of a plurality of the touch operation positions detected in the touch operation period of, the calculation means for calculating an average touch operation position, and the touch of the touch operation period based on the calculated average touch operation position A first determination unit that determines the operation position is provided.

  In order to solve the above-mentioned problem, the touch operation position determination method is a touch operation position determination method of determining the touch operation position of a touch panel input device that detects the touch operation position on the screen, and from the start to the end of the touch operation. Calculation step of performing an averaging process on the plurality of touch operation positions detected during the touch operation period to calculate an average touch operation position, and touching during the touch operation period based on the calculated average touch operation position. And a determination step of determining the operation position.

  In order to solve the above-mentioned problem, a computer program causes a computer system to function as the touch operation position determination device described above.

  In order to solve the above-mentioned problems, a recording medium is characterized by recording the above-mentioned computer program.

It is a block diagram of an information processing apparatus according to a first embodiment of the present invention. It is a figure which illustrates one scene of an input via a touch panel input device. 6 is a flowchart of a touch operation position determination process in the information processing device of FIG. 1. 6 is an example of a timing chart when the touch operation position coordinates are stored. It is a figure which illustrates the scene of the input via a touch-panel input device regarding the effect of a touch operation position determination process. It is a flow chart of touch operation position judging processing concerning a 2nd example. It is a figure explaining the filter process in the touch operation position determination process of FIG. It is a flow chart of touch operation position judging processing concerning a 3rd example. It is a figure which illustrates the one display state of a touch-panel input device regarding the effect of 3rd Example.

<Embodiment of Touch Operation Position Determination Device>
The embodiment according to the touch operation position determination device of the present invention is a touch operation position determination device that determines the touch operation position of a touch panel input device that detects the touch operation position on the screen, Calculation means for performing an averaging process on the plurality of touch operation positions detected during the touch operation period to calculate an average touch operation position, and a touch operation during the touch operation period based on the calculated average touch operation position. A first determining means for determining the position.

  According to the embodiment of the touch operation position determination device, the averaging process is performed on the plurality of touch operation positions detected during the touch operation period of one touch operation performed on the touch panel device, and the average touch is performed. The operation position is calculated. The touch operation position is determined based on the calculated average touch operation position.

  The averaging process is a concept including a process of reflecting a plurality of touch operation positions detected during the touch operation period on a processing result (here, the average touch operation position) according to a predetermined reference. At this time, weighting between individual touch operation positions may be equal or different. In the former case, the averaging process may be, for example, an averaging process of the plurality of touch operation positions.

  By performing such an averaging process, the influence of each of the plurality of touch operation positions detected during the touch operation period on the final determination of the touch operation position is mitigated. For example, a situation in which the touch operation position at the start of the touch operation deviates from the position desired by the user is a phenomenon that can frequently occur as a kind of disturbance. Therefore, in a device configuration that does not have the concept of averaging processing, that is, in a device configuration that makes a determination based on a touch operation position detected at one point on the time axis, such an erroneous input not intended by the user The impact cannot be mitigated. According to this embodiment in which the touch operation positions detected at a plurality of points on the time axis are considered, the present embodiment has high robustness against such a disturbance. In addition, since the user usually performs a touch operation with a clear intention, the intention and intention of the user are clear in the average touch operation position obtained by performing averaging processing on multiple touch operation positions. Reflected in. That is, according to the embodiment of the touch operation position determination device of the present invention, the possibility that the touch operation position is erroneously determined by the averaging process is greatly reduced.

  Although the number of samples (that is, touch operation positions) to be subjected to the averaging process is arbitrary, if the detection cycle of the touch operation position is set in consideration of the human operation speed, a user with a high operation speed can operate. However, the number of samples to be subjected to the averaging process is sufficiently secured. That is, according to the embodiment of the touch operation position determination device of the present invention, the determination accuracy of the touch operation position does not greatly fluctuate depending on the operation speed of the user.

  On the other hand, according to the embodiment of the touch operation position determination device, the touch operation performed by the user to realize the desired input is not a multi-step operation but one continuous operation. Therefore, the user can perform a natural operation, and a time lag until the touch operation position related to one touch operation is finally determined can be small. That is, a comfortable operation for the user is realized.

  In one aspect of the embodiment of the touch operation position determination device of the present invention, the calculating unit calculates the average touch operation position by arithmetically averaging the plurality of touch operation positions.

  According to this aspect, the calculation load of the calculation means is light, which is preferable.

  In this aspect, the calculating unit may average the touch operation position at the start of the touch operation period and the touch operation position at the end of the touch operation period.

  By doing so, the calculation load of the calculation means can be further reduced.

  The "touch operation position corresponding to the end of the touch operation period" includes the touch operation position at the end of the touch operation in a strict sense, and is finally detected by the detection unit in one touch operation period. The purpose is to include the touch operation position.

  In another aspect of the touch operation position determination device of the present invention, a plurality of touch operation positions to be subjected to the averaging process are selected from the detected plurality of touch operation positions according to a predetermined reference. The calculating means includes a selecting means, and the calculating means calculates the average touch operation position by performing the averaging process on the selected plurality of touch operation positions.

  According to this aspect, the touch operation position suitable as the sample to be subjected to the averaging process can be selected by the selection unit. Therefore, the touch operation position can be determined with higher accuracy.

  For example, a touch operation position suitable for the averaging process is a point cloud in the middle operation period excluding the initial operation period and the final operation period in a sample point group in which a plurality of detected touch operation positions are arranged in a time series. May be. In the initial touch operation, the user may touch an unintended position, and at the end of the touch operation, the user may move the finger to touch the next touch operation position. Either of them can be a factor that reduces the accuracy of determination of the touch operation position.

  In another aspect of the touch operation position determination device of the present invention, a touch operation position corresponding to a start time point of the touch operation period, a touch operation position corresponding to an end time point of the touch operation period, and the calculation A second determination unit that determines whether or not the touch operation is valid based on the average touch operation position that has been made.

  In the device configuration for inputting information by a touch operation, the distribution of the plurality of touch operation positions with respect to the average touch operation position is small in deviation, although the scale is large and small over a certain period. Therefore, the positional relationship between the average touch operation position and the touch operation position used for the calculation can be used for determining whether the touch operation is valid or invalid.

  According to this aspect, the touch operation is valid based on the touch operation position corresponding to the start time of the touch operation period, the touch operation position corresponding to the end time of the touch operation period, and the calculated average touch operation position. Is determined. Therefore, the user can intentionally invalidate the touch operation, which improves comfort.

  The “touch operation position corresponding to the start time” includes, as a typical example, the touch operation position at the start time, and further, for example, one or more (for example, several samples) near the start time. It may include a touch operation position. In this case, the plurality of touch operation positions near the start time may not necessarily include the touch operation position at the start time. The same applies to the touch operation position corresponding to the end point.

  In this aspect, the second determination means corresponds to the distance between the touch operation position corresponding to the start time of the touch operation period and the calculated average touch operation position, and the end time of the touch operation period. It may be determined whether or not the touch operation is valid based on the comparison between the touch operation position and the calculated average touch operation position.

  When it is desired to invalidate the touch operation, the distance between the touch operation position at the start of the touch operation period and the average touch operation position regardless of at which point in the touch operation period the user has the intention to invalidate. In many cases, the distance between the touch operation position and the average touch operation position at the end of the touch operation period is different.

  Therefore, it is possible to accurately determine whether the touch operation is valid or invalid based on the comparison result.

<Embodiment of Touch Operation Position Determination Method>
The embodiment according to the touch operation position determination method of the present invention is a touch operation position determination method for determining a touch operation position of a touch panel input device that detects a touch operation position on a screen, and includes a touch operation from start to end. A calculation step of performing an averaging process on the plurality of touch operation positions detected during the touch operation period to calculate an average touch operation position, and a touch operation during the touch operation period based on the calculated average touch operation position. A determination step of determining the position.

  According to the embodiment of the touch operation position determination method, by each step that achieves an action equivalent to that of each unit of the embodiment of the touch operation position determination device, similar to the embodiment of the touch operation position determination device. , Comfortable operation is realized.

<Embodiment of Computer Program>
An embodiment of a computer program of the present invention causes a computer system to function as an embodiment of a touch operation position determination device.

  According to the embodiment of the computer program of the present invention, a solid-state storage medium such as a ROM, a CD-ROM, a DVD-ROM, a hard disk, or a USB (Universal Serial Bus) memory that stores the computer program is detachable from the computer system. The present invention described above, if the computer program is read into the computer system from the type storage device and executed, or if the computer program is downloaded to the computer system via, for example, communication means and then executed. The embodiment of the touch operation position determination device can be realized relatively easily.

<Embodiment of recording medium>
In the embodiment of the recording medium of the present invention, the embodiment of the computer program is recorded.

  According to the embodiment of the recording medium of the present invention, the computer program of the present invention is recorded by being attached to or connected to a computer system, or by being inserted into an appropriate reading device provided or connected to the computer system. The embodiment according to can be read and executed by a computer system, and the above-described embodiment according to the touch operation position determination device of the present invention can be realized relatively easily.

  Such effects and other advantages of the present invention will be made clear by the embodiments described below.

  Hereinafter, various embodiments suitable for realizing the present invention will be described with reference to the drawings as appropriate.

  In the embodiments described below, the touch operation position determination device according to the present invention is provided in the information processing device 10. The information processing device 10 can take various forms such as a mobile phone such as a smartphone, a tablet type personal computer device, and a car navigation device. What comprehensively expresses these as an information processing device is a device in which the touch operation position determination device according to the present invention is used to determine the touch operation position of the user via the touch panel input device as the input means. This is because the specific functional use of the information processing device is irrelevant to its effect. Therefore, in the embodiment, the information processing device 10 is limited to the expression that it is an information processing device having a certain specific function. For example, when the information processing device 10 is a mobile phone, the certain function means a function as a morphological phone including a call function, a WEB browser function, a mail function, an imaging function, and the like. The same applies to the other embodiments.

<First embodiment>
<Structure of Example>
First, the configuration of the information processing device 10 will be described with reference to FIG. Here, FIG. 1 is a block diagram of the information processing apparatus 10.

  In FIG. 1, the information processing device 10 includes a control device 100, a display device 200, and a touch panel input device 300.

  The control device 100 is a control device of the information processing device 10 including a control unit 110, a touch operation position determination unit 120, a display control unit 130, and a function control unit 140, and corresponds to the “touch operation position determination device” according to the present invention. This is an example.

  The control unit 110 is a computer device including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and is configured to integrally control the operation of each unit of the control device 100. ing.

  The ROM of the control unit 110 stores control programs relating to various controls executed by the control unit 110. This control program also includes a control program for touch operation position determination processing, which will be described later. The control program related to the touch operation position determination processing is an example of the “computer program” according to the present invention.

  The ROM is an example of the “recording medium” according to the present invention. Since the ROM is a non-volatile storage device, in this embodiment, the control program for the touch operation position determination process is provided in the control unit 110 in advance. This control program is stored in the RAM or the hard disk or the control device 100. It may be written in another volatile storage device that can be provided. In this case, updating and maintenance of the control program for the touch operation position determination process can be performed relatively easily. Further, it is possible to take measures such as distributing the control program related to the touch operation position determination processing via a network, or distributing a recording medium in which the control program related to the touch operation position determination processing is recorded.

  The touch operation position determination unit 120 is configured to be able to determine the touch operation position of the user via the touch panel input device 300 when the touch operation position determination process is executed, and the “calculation unit” according to the present invention, It is a control unit that is an example of a “first determination unit”.

  The display control unit 130 is a processing device configured to control the display content of the display device 200.

  The function control unit 140 is a processing device that controls a function (for example, a function as a mobile phone as described above, etc.) according to a functional use of the information processing apparatus 10.

  The display device 300 is a display device having a display screen.

  The touch panel input device 300 is a contact type input device that is an example of the “touch panel input device” according to the present invention, which is built on the display screen of the display device 300, detects a touch operation of the user as an electric signal, and The touch operation position signal corresponding to the two-dimensional coordinate of the touch operation position, that is, the touch operation position coordinate L including the x coordinate and the y coordinate can be output in a predetermined cycle. Since the configuration of the touch panel input device 300 is well known, its details are omitted here.

<Operation of Example>
Next, the operation of this embodiment will be described.

<Outline of touch operation position determination processing>
FIG. 2 is a diagram illustrating one scene of input through the touch panel input device 300. That is, one point of the touch panel input device 300 is touch-operated by the user's finger.

  Here, unlike the touch panel input device 300, each of the options (in FIG. 2, individual keys of the pseudo keyboard device as an example) selectable via the touch panel input device 300 is not physically partitioned. In the configuration, the touch operation position of the user may be erroneously determined. In particular, when this option is small for the fingers and is dense, the tendency becomes particularly strong. In the present embodiment, the problem related to the erroneous determination of the touch operation position is solved by the touch operation position determination process executed by the control unit 110.

<Details of touch operation position determination processing>
Next, details of the touch operation position determination process will be described with reference to FIG. Here, FIG. 3 is a flowchart of the touch operation position determination processing. The touch operation position determination process is a process that is constantly executed during the operation period of the information processing device 10.

  In FIG. 3, first, it is determined whether or not the touch operation is started (step S110). When the touch operation has not been started (step S110: NO), the process goes to a standby state in step S110.

  When the touch operation is started (step S110: YES), the touch operation position coordinate L is stored (step S120).

  Here, the touch panel device 300 detects the touch operation position coordinate L for each predetermined cycle Tspl and sends the touch operation position signal corresponding to the touch operation position coordinate L to the control device 100. The control device 100 acquires the transmitted touch operation position signal and acquires the touch operation position coordinate L. This operation is executed by the control unit 110, for example.

  The touch operation position determination unit 120 temporarily stores the acquired touch operation position coordinates L in time series. A buffer or the like included in the touch operation position determination unit 120 is used to store the touch operation position coordinates.

  When the latest touch operation position coordinate L at that time is stored, it is determined whether or not the touch operation is completed (step S130). When the touch operation is not completed (step S130: NO), the process is returned to step S120, and the touch operation position coordinate L is sequentially stored according to the touch operation position signal sequentially output from the touch panel input device 300.

  This is shown in FIG. FIG. 4 is an example of a timing chart when the touch operation position coordinates are stored.

  In FIG. 4, the touch operation position coordinate L is sent to the control device 100 for each detection cycle Tspl. Here, in the present embodiment, an identifier is used in order to identify each of the sent touch operation position coordinates L. That is, in FIG. 4, the touch operation position coordinates L are L1 (x1, y1), L2 (x2, y2), ..., Starting from the touch operation position coordinates Ls (xs, ys) at the start of the touch operation. The touch operation position determination unit 120 stores a total of n + 1 Ln (xn, yn).

  When the touch operation is completed (step S130: YES), the averaging process is performed. The averaging process according to the present embodiment is a process of averaging a plurality of touch operation position coordinates L temporarily stored in the touch operation position determining unit 120. More specifically, in the averaging process, the arithmetic mean values x_ave and y_ave of the x coordinate are obtained, and the average touch operation position coordinate L_ave (x_ave, y_ave) is determined. The average touch operation position coordinate L_ave is sent to the control unit 110 as the determination result of the touch operation position in one touch operation period, and the process returns to step S110. The touch operation position determination process is performed in this manner.

  When the average touch operation position coordinate L_ave is output, all the touch operation position coordinates temporarily stored in the touch operation position determination unit 120 are discarded for the next touch operation position determination.

  When the control unit 110 acquires the average touch operation position coordinates L_ave, the display control unit determines that the option corresponding to the average touch operation position coordinates L_ave has been selected from the plurality of options displayed on the display screen. The processing unit 130 and the function control unit 140 are instructed to perform processing corresponding to the selected option. For example, if the average touch operation position coordinate L_ave on the display screen corresponds to the key “G”, the display control unit 130 displays the character “G” at an appropriate position on the display screen. Alternatively, if the average touch operation position coordinate L_ave on the display screen corresponds to any function selection button, the function control unit 130 executes the corresponding function.

The number of touch operation position coordinates used for the averaging process is mainly determined by the operation speed of the user and the touch operation detection cycle Tspl. For example, the time when one touch operation is performed, that is, the length of the touch operation period from the touch operation start time to the touch operation end time (that is, corresponding to the operation speed of the user) is set to 1 sec, and the detection cycle Tspl is If it is set to 50 msec, about 20 touch operation position coordinates can be obtained.
<Effect of touch operation position determination processing>
Next, the effect of the touch operation position determination process will be described with reference to FIG. Here, FIG. 5 is a diagram illustrating one scene of input (touch operation) via the touch panel input device 300 according to the effect of the touch operation position determination processing.

  In FIG. 5, (a) shows a state where the user randomly traces the vicinity of a desired target position p (see white circle in the figure) on the touch panel input device 300 with a finger. The locus of this touch operation is displayed by a thick solid line.

  When the trajectory of the touch operation is random as shown in FIG. 5A, the average touch operation position coordinate L_ave obtained by the averaging process is generally the target position p because the intention of the user is originally at the target position p. Match the position coordinates of.

  In FIG. 5, (b) shows a state in which the user traces a desired target position p (see white circles in the figure) on the touch panel input device 300 with a finger in a circle centered on the target position p. There is. The locus of this touch operation is displayed by a thick solid line.

  When the trajectory of the touch operation draws a circle as shown in FIG. 5B, the average touch operation position coordinate L_ave obtained by the averaging process substantially coincides with the center of the circle, that is, the position coordinate of the target position p.

  In FIG. 5, (c) shows a state in which the user traces a desired target position p (see white circle in the figure) on the touch panel input device 300 with a finger in a straight line passing through the target position p. .. The locus of this touch operation is displayed by a thick solid line.

  When the trajectory of the touch operation draws a straight line as shown in FIG. 5C, the average touch operation position coordinate L_ave obtained by the averaging process substantially coincides with the center of the straight line, that is, the position coordinate of the target position p.

  As described above, according to the touch operation position determination process according to the present embodiment, the touch operation position related to the touch operation of the user is determined based on the plurality of touch operation position coordinates detected during the touch operation period. That is, the touch operation position is not determined by only one point on the time axis. Therefore, it is possible to significantly reduce the possibility of erroneous determination of the touch operation position. Under the assumption that the user originally wants to perform a touch operation on the target position, it is difficult to perform an accurate touch operation on the target position, but it is natural that the user's touch operation concentrates on a nearby area around the target position. Is. Therefore, if there are a certain number of samples, the position desired by the user can be estimated.

  Further, according to the touch operation position determination processing according to the present embodiment, the operation requested by the user is merely a seamless series of touch operations. That is, multi-step operations such as retouching operation after enlargement processing and selection operation from options displayed in a pop-up are not required at all. Therefore, it is unlikely that the user feels uncomfortable and time loss is small. That is, according to the touch operation position determination processing according to the present embodiment, it is possible to improve the comfort of the user when inputting information by touch operation.

  In the case of the touch operation shown in FIG. 5C, in order to match the average touch operation position L_ave with the position coordinate of the target position p, strictly speaking, the start position of the straight line passing through the target position p and the target position p The distance from the position p and the distance between the end position of the straight line passing through the target position p and the target position p need to be equal. That is, it is necessary to perform the touch operation so that the target position p is located at the center of the straight line. In that respect, the burden on the user side is slightly increased as compared with the case of FIGS. 5 (a) and 5 (b).

  On the other hand, if it is known in advance that the target position p is located at the center of the straight line, the touch operation position coordinates required for the averaging process need only be the coordinates at the start time and the end time of the touch operation. Referring to FIG. 4, the averaging process is performed with reference to only the touch operation position coordinates Ls and the touch operation position coordinates Ln. That is, in the average touch operation position coordinate L_ave (x_ave, y_ave), x_ave = (xs + xn) / 2 and y_ave = (ys + yn) / 2.

Therefore, in this case, the processing load of the touch operation position determination unit 120 is reduced in exchange for a slight increase in the burden on the user side.
<Second embodiment>
Next, with reference to FIG. 6, a touch operation position determination process according to the second embodiment of the present invention will be described. FIG. 6 is a flowchart of the touch operation position determination processing according to the second embodiment of the present invention. In the figure, the same parts as those in FIG. 3 are designated by the same reference numerals, and the description thereof will be appropriately omitted.

  In FIG. 6, when the touch operation ends (step S130: YES), the filtering process is executed (step S131).

  The filtering process is a process of selecting a touch operation position coordinate suitable for the averaging process from the plurality of stored touch operation position coordinates, or a process of excluding touch operation position coordinates not suitable for the averaging process. .. That is, in the second embodiment, the touch operation position determination unit 120 further functions as an example of the “selection unit” according to the present invention.

  Here, the filtering process will be described with reference to FIG. 7. FIG. 7 is a diagram for explaining the filtering process.

  On the left side of FIG. 7, the touch operation position coordinates obtained during one touch operation period are shown in chronological order. Here, the plurality of touch operation position coordinates are divided into three groups of a first group G1, a second group G2, and a third group G3. The first group G1 is a p point group from the touch operation position coordinates Ls at the start of the touch operation to the touch operation position coordinates Lp-1 (p is a natural number). The second group G2 is a (q-p) point group from the touch operation position coordinates Lp to the touch operation position coordinates Lq (q> p). The third group G3 is a group of (n−q) points from the touch operation position coordinate Lq + 1 to the touch operation position coordinate Ln at the end of the touch operation. Qualitatively, the first group G1 is a point group in the initial stage of touch operation, the second group G2 is a point group in the middle stage of touch operation, and the third group G3 is a point group in the final stage of touch operation. Note that p and q can be set arbitrarily.

  On the right side of FIG. 7, the touch operation position coordinates after the filter processing are shown. The hatched touch operation position coordinates mean the coordinates deleted by the filtering process. That is, FIG. 7 shows a case where 50% of the touch operation position coordinates belonging to the first group G1 and the third group G3 are deleted as the filtering process. Note that, as shown in the figure, the deletion of the coordinates is performed alternately so that both of the coordinates consecutive to each other are not deleted.

  When such filter processing is performed, as a result, the influence of the second group G2 on the average touch operation position coordinates L_ave obtained in the averaging processing becomes stronger than that of the first group G1 and the third group G3. .. In other words, it becomes difficult to reflect the touch operation positions belonging to the first group G1 and the third group G3 on the average touch operation position coordinates L_ave. That is, such a filter process is an example of a process of weighting each touch operation position coordinate.

  According to the touch operation position determination processing according to the second embodiment, the filter operation makes it difficult to reflect the touch operation position coordinates at the initial and final stages of the touch operation in which the touch operation position easily deviates from the target position p. Therefore, the touch operation position can be determined with higher accuracy.

  Supplementally, according to the touch operation position determination processing according to the second embodiment, the user can perform the touch operation without being aware of the start position and the end position of the touch operation, as compared with the first embodiment. .. Therefore, the psychological burden on the user side can be reduced.

In this embodiment, the touch operation position coordinates related to one touch operation detected by the touch panel input device 300 are divided into three. However, this is an example, and the practical modes that the filtering process can take are ambiguous. For example, the filtering process may be a process of deleting a predetermined number of touch operation position coordinates from the touch operation start time point and deleting a predetermined number of touch operation position coordinates from the touch operation end time point. Alternatively, in the filtering process, the touch operation position coordinates may be finely divided, and the ratio of thinning the coordinates may be changed stepwise.
<Third embodiment>
In the first and second embodiments, when the touch operation is performed, the average touch operation position coordinate is always finally determined as the touch operation position for the touch operation. However, in practice, there are cases where it is desired to invalidate the touch operation, such as when the user accidentally performs the touch operation. In such a case, if the average touch operation position is determined to be the touch operation position, it is originally an erroneous input. Therefore, no matter how the touch operation position is accurately determined, it does not meet the user's intention. Will result. That is, such a situation is also an erroneous determination of the touch operation in a broad sense.

  In the third embodiment, a touch operation position determination process for dealing with such a problem will be described with reference to FIG. FIG. 8 is a flowchart of the touch operation position determination processing according to the third embodiment. In the figure, the same parts as those in FIG. 3 are designated by the same reference numerals, and the description thereof will be appropriately omitted.

  In FIG. 8, when the averaging process is performed (step S140), the position deviation of the touch operation position is calculated (step S141). The position deviation of the touch operation position includes a start point position deviation Lds and an end point position deviation Lde.

  The start point position deviation Lds is the distance between the touch operation position at the start of the touch operation (that is, the touch operation position corresponding to the touch operation position coordinates Ls) and the average touch operation position L_ave. The starting point position deviation Lds can be obtained by a known geometric calculation.

  The end point position deviation Lde is the distance between the touch operation position at the end of the touch operation (that is, the touch operation position corresponding to the touch operation position coordinates Ln) and the average touch operation position L_ave. The end point position deviation Lde can be obtained by a known geometric calculation.

  When the position deviation is calculated, a judgment index value a for judging whether or not the touch operation is valid is calculated (step S142). The determination index value a according to the present embodiment is defined as Lde / Lds.

  When the determination index value a is calculated, it is determined whether the calculated determination index value a is larger than the reference value a1 (step S143).

  When the determination index value a is equal to or less than the reference value a1 (step S143: NO), it is determined that the touch operation in this touch operation period is valid, and the average touch operation position L_ave obtained in step S140 is the final touch operation position L_ave. It is output as the touch operation position (step S150). That is, in the third example, the touch operation position determination unit 120 functions as an example of the “second determination unit” according to the present invention.

  On the other hand, when the determination index value a is larger than the reference value a1 (step S143: YES), the touch operation in this touch operation period is determined to be invalid, and the average touch operation position L_ave obtained in step S140 is discarded. (Step S144). When the touch operation is determined to be invalid, the process returns to step S110. The touch operation position determination process according to the third example is performed in this manner.

  Here, the effect of the third embodiment will be described with reference to FIG. FIG. 9 is a diagram illustrating one display state of the touch panel input device 300.

  In FIG. 9, the touch operation position at the start of the touch operation is a start point s, the touch operation position at the end of the touch operation is an end point e, and the average touch operation position corresponding to the average touch operation position coordinates obtained by the averaging process is shown. , And the average point ave. The average point ave is close to the start point s side, and the touch operation position has largely changed to the end point e immediately before the end of the touch operation (in other words, the touch operation position has been largely changed and the touch operation has ended). I mean. For example, step S143 of FIG. 8 branches to the “YES” side when such an operation is performed. That is, the touch operation is invalid.

  Here, for example, the touch operation of the user who can take the locus illustrated in FIG. 5 is concentrated near the desired position when the user performs the touch operation for the purpose of touching the desired position. To do. Therefore, if the reference value a1 of the determination index value a is defined so that the touch operation as illustrated in FIG. 9 is determined to be an invalid operation, the accuracy of determination of the normal touch operation position is not affected, and the user Can intentionally disable touch operations. For example, the reference value a1 may be a value of about “2”.

  In addition, it is uncertain when the user wants to invalidate the touch operation after the start of the touch operation, and the intention is not to move the end point largely in a relatively short time with the intention of invalidating the touch operation. As long as the average point ave is closer to the end point e side than the illustrated position, the invalidation condition may not be satisfied. In view of that point, the determination relating to the invalidation of the touch operation may be performed by simply or instead of the condition illustrated in step S143 of FIG. 8 and / or by determining that the end point position deviation Lde is equal to or larger than a predetermined value. It may be adopted that the distance between the start point s and the end point e is a predetermined value or more.

  In any case, the invalidation determination function according to the third embodiment allows the user to intentionally invalidate the touch operation. Therefore, more comfortable operation of the touch panel input device 300 is ensured.

  The present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope not departing from the spirit or idea of the invention that can be read from the claims and the entire specification, and touch operation position determination involving such modifications. The device is also included in the technical scope of the present invention.

  10 ... Information processing device, 100 ... Control device, 110 ... Control part, 120 ... Touch operation position determination part, 200 ... Display device, 300 ... Touch panel input device.

Claims (1)

A touch operation position determination device that determines a touch operation position of a touch panel input device that detects a touch operation position on a screen,
A calculating unit that performs an averaging process on the plurality of touch operation positions detected in the touch operation period from the start to the end of the touch operation, and calculates an average touch operation position.
A touch operation position determination device that determines a touch operation position during the touch operation period based on the calculated average touch operation position.

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