KR20100006643A - Method for recognizing touch input and apparatus for performing the same - Google Patents

Abstract

PURPOSE: A touch input recognizing method and a device for performing the same are provided to recognize touch input by distinguishment of a group corresponding to the beginning and end locations of a locus, thereby drastically reducing a processing load for recognizing the touch input. CONSTITUTION: A touch screen(310) indicates a UI(User Interface) screen and provides a coordinate value corresponding to a touch locus. A controller(320) groups a touch area of the touch screen by a fixed number of groups. The controller decides the first group corresponding to a beginning coordinate value in which touch input begins based on the coordinate values and the second group corresponding to an end coordinate value in which the touch input ends. The controller decides an execution event based on the first and second groups.

Description

Method for recognizing touch input and device for performing the same {Method For Recognizing Touch Input And Apparatus For Performing The Same}

The present invention relates to a touch input recognition method, and more particularly, to a touch input recognition method that can be applied to a device having a touch screen and a device for performing the same.

Recently, with the rapid development of processor technology, memory capacity increase, and multimedia coding technology, functions included in portable terminals such as mobile phones and PDAs (Personal Digital Assistants) are becoming more and more diversified.

As the functions provided in the portable terminal have increased in various ways, the menus for utilizing the functions provided in the portable terminal have also increased. As a result, the keypad having a conventional fixed matrix arrangement is not suitable to utilize various functions provided in the portable terminal. Was done.

In addition, recently, as the application program provided in the portable terminal is changed from a number or text-based interface to a graphic-based interface, it is not possible to efficiently use a graphic-based application program using only conventional numbers, letters, or arrow keys.

In addition, while the portable terminal has various image display functions such as multimedia playback and portable Internet function, there is an increasing demand for a display device having a wider visible screen.

In line with the trend of the above times, recently, a touch screen capable of simultaneously performing input and display in one device without using a separate keypad has been adopted in a portable terminal.

The touch screen simplifies input operations by allowing the user to use the handheld terminal interactively and intuitively by simply touching a button or graphic object displayed in the display area with a finger or pen, and the interface object displayed for input is optimized for the application. Since it is displayed, the user can more easily recognize the input interface and input the same.

In addition, since the touch screen is integrally installed with the display device and the touch pad, it is not necessary to provide a keypad installation space like a conventional portable terminal, so that a display device having a larger visible screen can be adopted in the portable terminal. have.

The touch screen has contact capacitive method, infrared light sensing method, surface ultrasonic method, piezoelectric method, integral tension measuring method and resistive film method depending on the driving method. Among them, the transmittance is high, the reaction speed is fast and the resistance is excellent. Resistor films that are less affected by the operating environment are generally used.

However, since a general portable terminal is manufactured in a small size for portability, the size of the touch screen included in the portable terminal is also limited, and the number of menu items or application programs that can be displayed on the small size touch screen is limited. There is a limit to the number of buttons for control.

In order to compensate for the above disadvantages, the touch input method of the touch screen provided in the portable terminal includes a straight line, a curve, a touch input through a touch on the touch screen, in addition to the touch input method of simply touching a menu or a button displayed on the touch screen. A method of selecting a predetermined menu or controlling execution of a predetermined application by providing a predetermined two-dimensional gesture such as a figure or a symbol is used.

However, when the user draws a two-dimensional touch trace such as a straight line, a curve, a figure or a symbol on the touch screen, the portable terminal having the touch screen receives coordinate values corresponding to the trace touched by the user from the touch screen. Since the coordinate values received are processed again to determine the type of touch input provided by the user, and then the event corresponding to the determined touch trajectory is executed, the processing load for recognizing the touch input is large and the overall processing performance is reduced. There is a problem.

Accordingly, a first object of the present invention is to provide a touch input recognition method capable of easily recognizing a touch input provided by a user and reducing a processing load for recognizing the touch input.

In addition, a second object of the present invention is to provide a touch input recognition device that can easily recognize a touch input provided by a user and can reduce the processing load for recognizing the touch input.

According to an aspect of the present invention, there is provided a method of recognizing a touch input, in which a touch area of the touch screen is grouped into a predetermined number of groups, and a touch on the grouped touch screen. Determining an input is provided, determining a first group corresponding to a start coordinate value at which the touch input is started, and a second group corresponding to an end coordinate value at which the touch input is terminated, and determining the first group; Determining an execution event based on the second group. Grouping the touch areas of the touch screen into a predetermined number of groups may be grouped by a predetermined number of virtual concentric circles whose radius increases constantly by a predetermined length based on the center coordinates of the touch screen. Grouping the touch areas of the touch screen into a predetermined number of groups may be grouped into different shapes based on the type of the user interface displayed on the touch screen. The determining of the first group corresponding to the start coordinate value at which the touch input is started and the second group corresponding to the end coordinate value at which the touch input is terminated may include storing the start coordinate value and the end coordinate value in advance. The first group and the second group may be determined by comparing the coordinate values of the group. The determining of the first group corresponding to the start coordinate value at which the touch input starts and the second group corresponding to the end coordinate value at which the touch input ends is based on the change amount of the start coordinate value and the end coordinate value. The direction of the touch input can be determined. In the determining of the execution event based on the determined first group and the second group, the execution event may be determined based on a distance between the determined first group and the second group. In the determining of the execution event based on the determined first group and the second group, the execution event may be determined based on a distance between the determined first group and the second group and a direction of the touch input. .

In addition, the touch input recognition device according to an embodiment of the present invention for achieving the second object of the present invention is a touch screen for displaying a user interface screen, and provides a coordinate value corresponding to the touched trajectory and the touch screen Grouping the touch area into a predetermined number of groups, and based on the coordinate values provided from the touch screen, a first group corresponding to a start coordinate value at which a touch input starts and a second coordinate value corresponding to an end coordinate value at which the touch input ends And a controller configured to determine the two groups and determine an execution event based on the determined first group and the second group. The controller may group the touch areas in different shapes based on the type of the user interface displayed on the touch screen. The controller may determine the first group and the second group by comparing the start coordinate value and the end coordinate value with coordinate values of respective groups. The controller may determine the direction of the touch input based on the change amount of the start coordinate value and the end coordinate value. The controller may determine an execution event based on the determined distance between the first group and the second group. The controller may determine an execution event based on the distance between the determined first group and the second group and the direction of the touch input.

According to the above-described method of recognizing a touch input and a device for performing the same, after grouping touch regions of a touch screen into a predetermined number of virtual groups, if a touch trace is drawn on the touch region, the touch is based on a coordinate value corresponding to the touch trace. The group corresponding to the start position of the trajectory and the group corresponding to the end position of the touch trajectory are determined, and the direction of the touch trajectory is determined. The execution event is determined based on the determined group information and / or the direction of the touch trajectory.

Therefore, the touch input can be easily performed by determining a group corresponding to the start and end positions of the touch trace without the need for a separate complicated process of estimating the touch trace based on the coordinate value corresponding to the touch trace provided by the user. It can be recognized, which greatly reduces the processing load for the recognition of the touch input.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description.

However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. In the following description of the present invention, the same reference numerals are used for the same elements in the drawings and redundant descriptions of the same elements will be omitted.

1 is a conceptual diagram illustrating a touch input recognition method according to an embodiment of the present invention.

Referring to FIG. 1, in the touch input recognition method according to an embodiment of the present invention, a touch input recognition device having a touch screen first groups the touch areas of the touch screen into a predetermined number of groups. Here, the touch area refers to the surface of the touch screen touchable by the user.

Specifically, as shown in FIG. 1A, the grouping of the touch regions 10 forms a plurality of virtual concentric circles whose radius is constantly increased by a predetermined length with respect to the center 11 of the touch region. A plurality of groups may be set based on the touch areas divided by the virtual concentric circles.

For example, the grouping of the touch areas is based on the first group 21 to the eighth group 28 based on a plurality of concentric circles drawn at equal intervals from the center 11 of the touch area 10 toward the edge of the touch area. Can be grouped as:

When the touch areas are grouped as described above, the touch input recognizing apparatus stores group coordinate value information including information on coordinate values belonging to each grouped group, and when the user inputs a predetermined touch trajectory in the touch area, the input touch trajectory is input. The coordinate value corresponding to the start position of and the coordinate value corresponding to the end position of the touch trajectory are compared with the stored group coordinate value information to determine a group in which the touch trajectory provided by the user starts and a group in which the touch trajectory is terminated.

The touch input recognizing apparatus determines an execution event based on the distance between the group in which the touch trajectory is started and the group in which the touch trajectory is terminated.

For example, as illustrated in FIG. 1A, when the user draws a straight line 30 with a touch trajectory from the third group 23 to the sixth group 26 of the grouped touch regions of the touch screen, The touch input recognizing apparatus receives coordinate values corresponding to the start position 31 of the touch trace and coordinate values corresponding to the end position 33 of the touch trace from the touch screen, and stores the received coordinate values in advance in the group coordinate value information. It is determined that the touch trajectory is drawn over three groups from the third group 23 to the sixth group 26 as compared with the above.

Thereafter, the touch input recognizing apparatus determines a distance between the groups in which the touch trace is drawn as 3, determines a corresponding execution event, and executes the determined execution event.

For example, when a predetermined image is displayed on the touch screen, if a touch input is provided over three groups as described above, the touch input recognition apparatus may determine an execution event corresponding to the touch input as an image enlargement, and touch trajectory. Based on the distance between the drawn third group and the sixth group, the magnification of the image may be determined to be three times (that is, assuming that the distance of each group is one time).

Also, the touch input recognizing apparatus may determine a direction in which the touch trace is drawn by calculating a change amount of the coordinate value corresponding to the start position of the touch trace and the coordinate value corresponding to the end position of the touch trace.

For example, as a result of comparing the coordinate value corresponding to the start position of the touch trace and the coordinate value corresponding to the end position of the touch trace, when the change amount of the Y value is greater than the change amount of the X value, the touch trace is drawn in the vertical direction. If the amount of change in the X value is greater than the amount of change in the Y value, it may be determined that the touch trajectory is drawn in the horizontal direction.

Also, the touch input recognizing apparatus determines the up, down, left, and right directions in which the touch trajectory is drawn based on the increase / decrease characteristic of the X value or the Y value among the coordinate values of the start position of the touch trajectory and the end position of the touch trajectory provided from the touch screen. can do.

For example, when the change amount of the X value is greater than the change amount of the Y value in the coordinate values of the start position and the end position value, it may be determined that the touch trace is drawn in the horizontal direction. It may be determined that the drawing is drawn from left to right, and if the value of X decreases, the touch trajectory may be determined from right to left.

In FIG. 1A, the grouping of the touch areas is performed by concentric circles formed at equal intervals with respect to the center of the touch area. However, the grouping of the touch areas may include menus, execution screens, and graphic information displayed on the touch screen. Each may be formed in a different form according to the type of the user interface.

For example, when a predetermined image is displayed on the touch screen, grouping of the touch areas as shown in FIG. 1A is set, and the image displayed on the touch screen is predetermined based on the touch trajectory input by the user. It may be configured to be enlarged or reduced in magnification.

Alternatively, when a list of files related to a predetermined application is displayed on the touch screen, grouping is set by virtual rectangles drawn at equal intervals based on the center of the touch area as shown in FIG. The file list (eg, a photo album or a music file list) may be skipped a predetermined number based on the touch input.

Alternatively, when predetermined text is displayed on the touch screen, as shown in FIG. 1C, the touch areas are grouped in a mesh shape, and the text is displayed based on the touch trajectories provided to the grouped areas. It may be configured to scroll in a predetermined direction and at a predetermined speed.

FIG. 2 is a flowchart illustrating a touch input recognition process according to an exemplary embodiment of the present invention. As illustrated in FIG. 1, it is assumed that touch areas of a touch screen are grouped into a predetermined number of groups.

Referring to FIG. 2, if a predetermined user interface screen is displayed on the touch screen by a user's operation or a predetermined operation method (for example, booting) (step 201), the touch input recognition device may display the user displayed on the touch screen. The touch areas are grouped into a predetermined number of groups according to the interface screen (step 203).

In this case, the touch areas may be grouped into different shapes according to the type of the user interface displayed on the touch screen.

For example, when a predetermined image is displayed on the touch screen by a user's manipulation, the touch input recognizing apparatus groups the touch screen into a predetermined number of groups through a plurality of virtual concentric circles as shown in FIG. When predetermined text is displayed on the touch screen, the touch areas may be grouped in a mesh shape as shown in FIG. 1C.

Alternatively, in another embodiment of the present invention, the touch areas may be grouped into a single form regardless of the user interface screen displayed on the touch screen.

Thereafter, when the user provides a touch input having a touch trajectory of a predetermined type to the grouped touch regions of the touch screen, the touch screen provides a coordinate value corresponding to the start position of the touch trajectory and a coordinate value for the end position of the touch trajectory. (Step 205).

 The touch input recognizing apparatus determines a group corresponding to each coordinate value by comparing the coordinate value for the start position of the touch trajectory and the end position of the touch trajectory provided from the touch screen with previously stored group coordinate value information ( Step 207).

Here, the group coordinate value information may be previously stored in the storage unit of the touch input recognizing apparatus as information on the coordinate values included in each group of the touch regions grouped in step 203.

Also, the touch input recognizing apparatus determines the direction of the touch trajectory based on the coordinate value corresponding to the start position of the touch trajectory provided in step 205 and the coordinate value for the end position of the touch trajectory (step 209).

In detail, the touch input recognizing apparatus may change the X value of the coordinate values (X ₁ , Y ₁ ) corresponding to the start position of the touch trace and the coordinate values (X ₂ , Y ₂ ) corresponding to the end position of the touch trace (that is, When X ₂ -X ₁ ) and Y value change amount (that is, Y ₂ -Y ₁ ) are larger than the change amount of the X value, it is determined that the touch trace is drawn in the vertical direction, and the change amount of the Y value is determined. When the change amount of X value is larger than that, it is determined that the touch trace is drawn in the horizontal direction.

In addition, the touch input recognizing apparatus increases or decreases an X value or a Y value among the coordinate values (X ₁ , Y ₁ ) of the start position of the touch trajectory and the coordinate values (X ₂ , Y ₂ ) of the end position of the touch trajectory provided from the touch screen. Based on the feature, the directions of the top, bottom, left and right where the touch trace is drawn may be determined.

For example, if the X value is increased, it may be determined that the touch trajectory is drawn from left to right, and if the X value is decreased, it may be determined that the touch trajectory is drawn from right to left. In addition, when the Y value increases, it may be determined that the touch trajectory is drawn upward from the bottom, and when the Y value decreases, it may be determined that the touch trajectory is drawn downward from the top.

Thereafter, the touch input recognizing apparatus determines an execution event corresponding to the touch input in consideration of the group corresponding to the start position and the end position of the touch trace determined in step 207 and / or the direction of the touch trace determined in step 209. (Step 211), the determined execution event is executed (step 213).

For example, if a predetermined image is displayed on the touch screen, and the touch trajectory is drawn from the first group to the third group of the touch areas grouped by concentric circles, the touch input recognition device triples the image displayed on the touch screen. It can be configured to enlarge.

Alternatively, when a predetermined image is displayed on the touch screen and the touch trace is drawn from the first group to the third group of the touch regions grouped by concentric circles, the image is tripled if the touch trace is determined to be drawn from right to left. If the image is enlarged and the touch trajectory is determined to be drawn from left to right, the image may be reduced by three times.

That is, in the touch input recognition method according to an embodiment of the present invention, the user may determine an event to be executed based on the distance between the group corresponding to the start position of the green touch trace and the group corresponding to the end position, and between the groups. The event to be executed may be determined in consideration of the distance and the direction of the touch trace at the same time.

3 is a block diagram illustrating a configuration of a touch input recognition device according to an embodiment of the present invention, and illustrates a portable terminal having a touch screen as an example of the touch input recognition device.

Referring to FIG. 3, a portable terminal performing a touch input recognition method according to an embodiment of the present invention may include a touch screen 310, a controller 320, a storage 330, a microphone 340, and a speaker 350. And it may be configured to include a wireless transceiver 360.

The touch screen 310 may be configured as a pressure resistive touch screen or a capacitive touch screen, and provides the controller 320 with coordinate values X and Y corresponding to the touched trajectory.

In addition, the touch screen 310 displays a graphical user interface screen such as a menu of a portable terminal or an execution screen of an executed application program based on the control of the controller 320.

If the user manipulates a button displayed on the touch screen 310 or power is supplied to the portable terminal and the booting of the portable terminal is completed, a predetermined user interface screen is displayed on the touch screen 310. The touch areas are grouped into a predetermined number of groups corresponding to the user interface screen displayed at 310.

Here, the controller 320 may group the touch areas into different types based on the type of the user interface displayed on the touch screen, a menu, or an application executed by a user's operation.

The grouping of the touch areas may be fixedly set at the time of manufacture of the portable terminal, and the control unit 320 may advance in advance based on an event (eg, a user interface, a menu display or an execution of an application) generated in the portable terminal. The grouping form of the predetermined touch region may be activated.

When the user draws a touch trajectory of a predetermined type on the grouped touch regions of the touch screen 310, the controller 320 moves to a coordinate value corresponding to the start position of the trajectory touched by the touch screen 310 and the end position of the touch trajectory. A group corresponding to each coordinate value by receiving a coordinate value for the comparison and comparing the coordinate value for the start position of the touch trace and the coordinate value for the end position of the touch trajectory with the group coordinate value information previously stored in the storage unit 330. Judge.

In addition, the controller 320 determines the direction of the touch trajectory based on the coordinate value corresponding to the start position of the touch trajectory provided from the touch screen 310 and the coordinate value for the end position of the touch trajectory.

Thereafter, the controller 320 determines an execution event corresponding to the touch input in consideration of the group corresponding to the determined start position and the end position of the touch trace and / or the determined direction of the touch trace, and executes the determined execution event. do.

The function of the controller 320 as described above may be performed by the touch input recognition module 321, which may be implemented as a software program, or may be implemented as a separate semiconductor chip.

The controller 320 may include a voice codec 323 for processing voice data transmitted and received during a voice call. The voice codec 323 receives a user's voice provided from the microphone 340, converts it into a digital signal, encodes the converted digital signal to comply with a voice call standard, and then provides the voice call to the wireless transceiver 360. It is transmitted to the other party's portable terminal.

In addition, the voice codec 323 decodes the voice of the counterpart provided from the portable terminal of the voice call counterpart through the wireless transceiver 360 and converts the voice of the counterpart into an analog signal and provides it to the speaker 350.

The storage unit 330 may be configured of a nonvolatile memory such as a flash memory, an electrically erasable and programmable read only memory (EEPROM), and the like, and the group coordinate value information corresponding to the user interface displayed on the touch screen 310 Is stored.

In addition, the storage unit 330 may store a list of execution events corresponding to each of the at least one touch input type (for example, executing an application program, moving a menu, expanding / reducing graphic information, scrolling an image, etc.).

Here, the group coordinate value information includes coordinate values included in each group of each of the grouped touch areas when the touch areas of the touch screen 310 are grouped according to a predetermined menu, function, or user interface. do.

The microphone 340 receives a voice of a user, that is, a caller, during a voice call, converts the voice into an electrical signal, and provides the same to the controller 320. In addition, the speaker 350 receives the voice signal of the voice call counterpart decoded by the voice codec 423 and outputs it as a signal of an audible frequency band.

Since the wireless transceiver 360 is a well-known technology and is not shown in detail, the wireless transceiver 360 may include a duplexer, a high frequency processor, and an intermediate frequency processor. The radio frequency signal received through the duplexer and converted to the intermediate frequency (Intermediate Frequency) and then converted to a baseband (baseband) signal to provide to the control unit 320, the baseband signal provided from the control unit 320 After converting to an intermediate frequency, the signal of the intermediate frequency may be converted into a wireless high frequency signal and provided to the antenna ANT through a duplexer.

Alternatively, the wireless transmission / reception unit 360 may use a direct conversion method that directly demodulates a signal from a high frequency signal received without frequency conversion instead of a heterodyne reception method that demodulates the high frequency signal into a baseband signal through an intermediate frequency conversion. have.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

1 is a conceptual diagram illustrating a touch input recognition method according to an embodiment of the present invention.

2 is a flowchart illustrating a touch input recognition process according to an embodiment of the present invention.

3 is a block diagram illustrating a configuration of a touch input recognition device according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

310: touch screen 320: control unit

321: Touch input recognition module 430: Storage unit

Claims (14)

In the touch input recognition method of a device having a touch screen, Grouping touch areas of the touch screen into a predetermined number of groups; Providing touch input to the grouped touch screens; Determining a first group corresponding to a start coordinate value at which the touch input starts and a second group corresponding to an end coordinate value at which the touch input ends; And And determining an execution event based on the determined first group and the second group. The method of claim 1, wherein the touch areas of the touch screen are grouped into a predetermined number of groups. And a group of virtual concentric circles whose radius is constantly increased by a predetermined length based on the center coordinates of the touch screen. The method of claim 1, wherein the touch areas of the touch screen are grouped into a predetermined number of groups. Touch input recognition method, characterized in that the grouping in different shapes based on the type of the user interface displayed on the touch screen. The method of claim 1, wherein the determining of the first group corresponding to the start coordinate value at which the touch input starts and the second group corresponding to the end coordinate value at which the touch input ends are as follows: And determining the first group and the second group by comparing the start coordinate value and the end coordinate value with previously stored coordinate values of each group. The method of claim 1, wherein the determining of the first group corresponding to the start coordinate value at which the touch input starts and the second group corresponding to the end coordinate value at which the touch input ends are as follows: And determining the direction of the touch input based on the change amount of the start coordinate value and the end coordinate value. The method of claim 5, wherein the determining of the execution event based on the determined first group and the second group comprises: And determining an execution event based on the determined distance between the first group and the second group. The method of claim 6, wherein the determining of the execution event based on the determined first group and the second group comprises: And determining an execution event based on a distance between the determined first group and the second group and a direction of the touch input. A touch screen displaying a user interface screen and providing coordinate values corresponding to the touched trajectory; And Grouping the touch areas of the touch screen into a predetermined number of groups, and based on the coordinate values provided from the touch screen, a first group corresponding to a start coordinate value at which a touch input starts and an end coordinate value at which the touch input ends And a controller configured to determine a second group corresponding to and to determine an execution event based on the determined first group and the second group. The method of claim 8, wherein the control unit And the touch areas are grouped based on a predetermined number of virtual concentric circles whose radius is constantly increased by a predetermined length based on the center coordinates of the touch screen. The method of claim 8, wherein the control unit And classifying the touch areas into different shapes based on the type of the user interface displayed on the touch screen. The method of claim 8, wherein the control unit And determining the first group and the second group by comparing the start coordinate value and the end coordinate value with previously stored coordinate values of each group. The method of claim 8, wherein the control unit And determining the direction of the touch input based on the change amount of the start coordinate value and the end coordinate value. The method of claim 12, wherein the control unit And determining an execution event based on the determined distance between the first group and the second group. The method of claim 13, wherein the control unit And determining an execution event based on a distance between the determined first group and the second group and a direction of the touch input.

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