KR20090131759A - 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 method are provided to perform searching and execution of an event corresponding to a touch input based on increase/decrease features of coordinates values, thereby reducing a processing load. CONSTITUTION: At least one coordinate value corresponding to a touched trace and size of a touch input are provided(303). Based on the at least one coordinate value, an inflection point is determined(305,307). If predetermined coordinates values are coordinates values of the inflection point, a first symbol value is determined based on increase/decrease features of at least one coordinate value provided prior to the predetermined coordinates values(309). A second symbol value corresponding to the size of the touch input is determined.

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, in recent years, as the application programs included in the portable terminal have been changed from the numeric or text-based interface to the graphical-based interface, it has become impossible to efficiently use the graphic-based application program only with conventional numbers, letters or direction keys. There is an increasing demand for a display device having a wider view while having various video display functions such as multimedia playback and portable Internet function.

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 limited, and the number or application of menu items that can be displayed on the small size touch screen is limited. There is also a limit on the number of buttons for controlling the program.

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.

Korean Patent Laid-Open Publication No. 2007-05583 (name of the invention: a method and apparatus for generating one-dimensional signals with a two-dimensional pointing device) recognizes a trajectory of a two-dimensional gesture input by a user on a touch screen, such as scrolling and the like. It discloses a technique for generating a.

However, Korean Patent Laid-Open Publication No. 2007-05583 uses a chirality-sensing function, an accumulation function, an extraction function, and a ballistic function to generate a one-dimensional output variable corresponding to a two-dimensional gesture input by a user. The complexity of the process increases the processing load of the portable terminal. In addition, there is a disadvantage that the recognition accuracy may be lowered due to the above complicated processing.

Accordingly, a first object of the present invention is to provide a touch input recognition method capable of easily recognizing a touch input input by a user and corresponding to various execution events with a predetermined touch input.

Further, a second object of the present invention is to provide a touch input recognition device that can easily recognize a touch input input by a user and can correspond to various execution events with a predetermined touch input.

According to an aspect of the present invention, there is provided a method of recognizing a touch input, the method comprising: receiving at least one coordinate value and a size of a touch input corresponding to a touched trajectory; Determining an inflection point based on the received at least one coordinate value; and when the predetermined coordinate value among the at least one coordinate value is a coordinate value of the inflection point, an increase / decrease characteristic of at least one coordinate value provided before the predetermined coordinate value Determining a first symbol value based on the second symbol value; determining a second symbol value corresponding to the size of the provided touch input; and determining an execution event corresponding to the determined first symbol value and the second symbol value. Steps. The determining of the inflection point based on the provided at least one coordinate value may include increasing or decreasing the first coordinate value and the second coordinate value among the first coordinate value and the second coordinate value which are sequentially provided at the predetermined time interval. When the features are different from each other, the first coordinate value may be determined as the coordinate value of the inflection point. The size of the touch input may be any one of a magnitude of touch pressure and an amount of change in capacitance corresponding to the touch input. In the determining of the second symbol value corresponding to the size of the provided touch input, the second symbol value may be determined based on a result of comparing the size of the touch input with a preset reference value. Determining an event corresponding to a determination symbol value from the execution event corresponding to the determined first symbol value and the second symbol value comprises: generating a symbol array including the first symbol value and the second symbol value and at least The same symbol array as the generated symbol array may be searched for in a database in which one symbol array and an execution event corresponding to each of the at least one symbol array are stored.

In addition, the touch input recognition device according to an embodiment of the present invention for achieving the second object of the present invention and the touch screen for providing a coordinate value corresponding to the touched trajectory and the size of the touch input every predetermined time interval, and the execution At least one coordinate value and a touch input provided from the storage unit and the touch screen storing the event list and at least one provided before the predetermined coordinate value when the predetermined coordinate value among the provided at least one coordinate value is an inflection point. Determine a first symbol value based on an increase / decrease characteristic of a coordinate value of, determine a second symbol value corresponding to the size of the provided touch input, and then execute an execution event corresponding to the determined first symbol value and the second symbol value. And a control unit for searching in the storage unit. The controller may be configured to convert the first coordinate value to the inflection point when the increase / decrease characteristic of the first coordinate value and the second coordinate value among the first coordinate values and the second coordinate values sequentially provided from the touch screen is different from each other. It can be determined by the coordinate value of. The controller may determine the second symbol value based on a result of comparing the size of the touch input with a preset reference value. The controller may search for the execution event by generating a symbol array composed of the first symbol value and the second symbol value, and searching the same symbol array as the generated symbol array in the storage unit.

According to the above-described touch input recognition method and apparatus for performing the same, when the coordinate value corresponding to the trajectory touched by the user and the size of the touch input are provided at predetermined time intervals, the inflection point is determined and provided based on the provided coordinate value. After determining the increase / decrease feature of the coordinate value, the symbol is converted into a symbol value corresponding to the increase or decrease feature of the coordinate value. In addition, the touch input size is compared with a preset reference value and symbolized as a symbol value corresponding to the size of the touch input. Then, after generating a symbol array consisting of the coordinate value and the symbol value corresponding to the touch input size, and searching for a symbol array identical to the generated symbol array in the database to execute an event corresponding to the retrieved symbol array.

Therefore, since the event corresponding to the touch input provided by the user is searched and executed based on the increase / decrease characteristic of the provided coordinate value, the processing load is small and the false recognition rate of the touch input can be reduced.

In addition, since the execution event is determined in consideration of the type of the touch input provided by the user and the size of the touch input at the same time, it is possible to execute more various and detailed events with one 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.

Hereinafter, in the embodiment of the present invention, the touch screen is a pressure resistive film type or a touched position that can provide the coordinate values (X, Y) of the touched position and the magnitude of the pressure applied to the surface when the touch is touched. It will be described by way of example as a capacitive method that can provide the amount of change in capacitance corresponding to the coordinate values (X, Y) and the touch input.

FIG. 1 is a conceptual diagram illustrating a touch input recognition process according to an exemplary embodiment of the present invention. FIG. 1 illustrates a case in which a user draws a circle clockwise at a predetermined position of a touch screen.

Referring to FIG. 1A, when a user draws a circle clockwise starting from the first inflection point 10, the touch screen corresponds to a trajectory touched by the user at a predetermined time interval (that is, the trajectory of the circle). It provides coordinate values (X, Y). Here, the predetermined time interval may have a different value according to the touch screen, for example, may be 20ms.

The touch screen sequentially provides coordinate values corresponding to the touched trajectory every 20 ms, starting with the coordinate values 1 and 8 of the first inflection point 10. For example, the touch screen displays coordinate values (1,8), (2,12), (5,14), and (8,15) at 20 ms intervals from the first inflection point 10 to the second inflection point 20. And the increase / decrease characteristic of the coordinate value is determined from the provided coordinate value. That is, the increase / decrease feature of the coordinate values (X, Y) from the first inflection point 10 to the second inflection point 20 may be a predetermined coordinate value (for example, (5, 14)). For example, it can be (+, +) since both the X value and the Y value of the coordinate value are increased compared to (2, 12)).

Judging by the same method as described above, the increase or decrease feature of the coordinate values input between the second inflection point 20 and the third inflection point 30 is compared with a previously provided coordinate value, and the X value of the coordinate value is It can be (+,-) because it increases and the Y value decreases.

In addition, the increase and decrease characteristic of the coordinate values input between the third inflection point 30 and the fourth inflection point 40 may be (-,-) since both the X value and the Y value of the coordinate value are reduced, and the fourth The increase / decrease characteristic of the coordinate values input between the inflection point 40 and the first inflection point 10 may be (−, +) because the X value of the coordinate value is decreased and the Y value is increased.

As a result, as illustrated in FIG. 1, when the user draws a circle clockwise starting from the first inflection point 10, the increase / decrease characteristic of the coordinate value provided every predetermined time interval (eg, 20 ms) is (+, +). , (+,-), (-,-), (-, +), And the above increase and decrease features may be stored in an array by substituting a predetermined symbol value.

According to an embodiment of the present invention, the increase or decrease characteristic of a coordinate value is '+' if the X value or Y value of the predetermined coordinate value increases with respect to the X value or Y value of the previous coordinate value, '-' if decreasing, and '0' if the same. Assume that you decide to.

Therefore, the increase and decrease characteristics of the coordinate value are all (+, +), (+,-), (+, 0), (-, +), (-,-), (-, 0), (0, +) , (0,-) and (0,0), wherein each of the incremental features is symbolized by, for example, symbol values of A, B, C, D, E, F, G, H and I, respectively. Can be.

For example, since the increase / decrease characteristic of the coordinate value corresponding to the trajectory of the circle shown in (a) of FIG. 1 is (+, +), (+,-), (-,-), (-, +) A, B, E, D can be symbolized, and the symbol values can be stored in an array form.

The touch input recognizing apparatus recognizes a touch input input by a user by searching for a symbol array identical to the symbol array [A, B, E, D] in a database stored in a storage unit and executing an event corresponding to the found symbol array. Runs an event corresponding to the recognized touch input.

As described above, in the touch input recognition method according to the exemplary embodiment of the present invention, since the type of the touch input is determined based on the increase / decrease characteristic of the coordinate value between the inflection points, not only the type of the touch input but also the order and / or direction of the touch input. You can judge.

In other words, even when the same type of touch input is provided, the order and / or direction of the touch input may be divided according to the order and / or direction of the touch input. You can assign a run event so that a wider variety of events can be executed.

In addition, in the embodiment of the present invention, the inflection point refers to a point where the increase or decrease characteristic of either the X value or the Y value of the coordinate value changes. For example, in FIG. 1A, a previous coordinate value of the second inflection point 20 is (5, 14), a coordinate value of the second inflection point is (8, 15), and a coordinate value after the second inflection point. Since is (12, 14), the increase / decrease characteristic is changed from (+, +) to (+,-) based on the second inflection point 20, and thus the coordinate values (8, 15) become inflection points.

The symbol arrangement illustrated in (a) of FIG. 1 may be represented by an increase and decrease graph as illustrated in (b) of FIG. 1. In FIG. 1 (b), the increase / decrease characteristic of the coordinate value touch input between each inflection point and the inflection point is displayed in the form of a graph.

In addition, in the touch input recognition method according to an embodiment of the present invention, the coordinate values (X, Y) of the tracks touched by the touch screen and the size (Z) of the touch input are simultaneously provided, and the shape of the touch input and the touch input Considering the size at the same time, more diverse and granular events can be executed.

Here, the size Z of the touch input may be the size of the touch pressure when the touch screen is a pressure resistive film type, and the amount of change in capacitance corresponding to the touch input when the touch screen is a capacitance type. Can be.

Specifically, the touch input device may set a reference value for the size of the touch input, and compare the size Z of the touch input provided from the touch screen with the reference value to distinguish the size of the touch input into two types. In addition, the size of the divided touch input may be symbolized according to a predetermined symbolization method.

For example, when the size Z of the touch input provided from the touch screen is less than or equal to the reference value, the size of the touch input is displayed as '1' (that is, Z = 1), and the size Z of the touch input is greater than or equal to the reference value. In this case, the size of the touch input may be displayed as '2' (that is, Z = 2).

FIG. 2 is a graph illustrating coordinate values and sizes of touch inputs provided from a touch screen in a touch input recognition process according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the coordinate values (X, Y) and the magnitude (Z) of the touch input provided from the touch screen may be simultaneously displayed in a graph. In addition, the increase / decrease feature for the coordinate value between the inflection points based on each inflection point is symbolized by a preset symbol value, and at the same time, the size of the touch input is also a symbol value corresponding to the size of the touch input according to a predetermined symbolization method. Can be mad.

The touch input recognizing apparatus generates a symbol array based on the symbol value for the increase / decrease feature and the touch input size between each inflection point, and recognizes the type of the touch input and the size of the touch input through the generated symbol array. The event

For example, if the coordinate values (X, Y) and the touch input size (Z) provided from the touch screen are as shown in Fig. 2, a symbol composed of symbol values of the magnitude of the touch input and the increase / decrease feature between each inflection point The array becomes [(A, 1), (B, 1), (E, 2), (D, 2)].

The touch input recognizing apparatus searches for a symbol array identical to the generated symbol array [(A, 1), (B, 1), (E, 2), (D, 2)] in a database to correspond to the found symbol array. You can determine the row event.

For example, the touch input recognizing apparatus is a circle in which the touch input corresponding to the symbol arrangement is touched in the clockwise direction based on the contents stored in the database, and the portion of the circle (that is, the fourth inflection point 30 from the third inflection point 30). It may be recognized that the touch input size between the inflection points 10 is greater than a preset reference value, and an event corresponding thereto may be executed.

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

Referring to FIG. 3, first, when power is applied to a touch input recognition device equipped with a touch screen, the touch input recognition device initializes (ie, j = 0) the symbol array value j (step 301).

Subsequently, when the user provides a predetermined touch input to the touch screen, the touch screen may have a coordinate value (X, Y) corresponding to the touched trajectory at each preset time interval (for example, 20 ms) and the size (Z) of the touch input. (Step 303).

Here, the size Z of the touch input may be the size of the touch pressure when the touch screen is a pressure resistive film type, and the amount of change in capacitance corresponding to the touch input when the touch screen is a capacitance type. Can be.

Thereafter, the touch input device compares two consecutively inputted coordinate values among the sequentially provided coordinate values to determine an increase / decrease characteristic of the coordinate value (step 305).

In addition, the touch input recognizing apparatus determines an inflection point based on the increase / decrease characteristics of the provided coordinate values (step 307). When a predetermined coordinate value among the provided coordinate values is determined to be an inflection point, the touch input recognition apparatus may determine a inflection point in advance. The symbol value corresponding to the increase / decrease feature of the coordinate values provided before the inflection point among the symbol values is determined (step 309).

In addition, the touch input recognizing apparatus compares the provided touch input size Z with a preset reference value to determine a symbol value corresponding to the size of the touch input (step 311).

If it is determined in step 307 that it is not the inflection point, the process returns to step 303 to repeat steps 303 to 307.

Steps 309 and 311 may be performed in a reversed order, or may be performed at the same time.

In addition, the symbolization process of the touch input size performed in step 311 may be symbolized in various ways according to the number of execution events to correspond to one touch input.

For example, when the touch input size is symbolized by two symbol values, one reference value is set, and when the touch input size Z is smaller than the reference value, the first input value is set by comparing the touch input size Z with the reference value. A symbol (eg, 1) may be set, and when the touch input size Z is larger than the reference value, it may be set to a second symbol (eg, 2).

Alternatively, when symbolizing the size of the touch input into three symbol values, the first reference value and the second reference value may be set, and the touch input size Z may be compared with the reference value to determine the touch input size Z as the first reference value. If smaller, set the first symbol (for example, 1), and if the touch input size Z is between the first and second reference values, set the second symbol (for example, 2). If the touch input size Z is larger than the second reference value, the touch input size Z may be set to a third symbol (eg, 3).

Thereafter, the touch input recognizing apparatus generates a symbol array composed of the input coordinate values and symbol values corresponding to the touch input size determined in steps 309 and 311 (step 313), and then increases the symbol array value j ( That is, j = j ++) (step 315).

The touch input recognizing apparatus searches for a symbol array identical to the symbol array generated in step 313 in a pre-stored database (step 317), and determines whether the symbol array exists in the database (step 319).

The touch input recognition apparatus may include a database in which various types of symbol arrays, touch input types corresponding to each symbol array, execution event information, and the like are stored.

As a result of the determination in step 319, if a symbol arrangement exists in the database, the touch input recognition apparatus determines whether an execution event corresponding to the symbol arrangement can be determined (step 321), and determines an execution event corresponding to the symbol arrangement. If it can be determined that the execution event is executed (step 323).

If it is determined that the symbol array determined in step 319 does not exist in the database, or if it is determined in step 321 that an execution event corresponding to the symbol array cannot be determined, the process returns to step 303 to determine an execution event corresponding to the user's touch input. Repeat steps 303 through 321 until it is done.

Alternatively, in another embodiment of the present invention, the number of executions of steps 303 to 321 may be counted, and an error message may be displayed on the display area of the touch screen when the counted value reaches a predetermined value or more.

In the touch input recognition method according to an embodiment of the present invention shown in FIG. 3, the symbol Z is generated by symbolizing the size Z of the touch input provided to the touch screen to a preset symbol value, and then generating a symbol array. According to another exemplary embodiment of the present invention, a predetermined execution event may be performed in proportion to the size Z of the provided touch input without symbolizing the size Z of the touch input provided to the touch screen.

For example, when the user draws a circle in the clockwise direction on the touch screen, the user may configure the scroll speed to change in proportion to the size of the touch input drawing the circle and to scroll the graphic information displayed on the touch screen upward.

Alternatively, when the user draws a circle in a counterclockwise direction on the touch screen, the user may scroll down the graphic information displayed on the touch screen and change the scroll speed in proportion to the size of the touch input drawing the circle.

4 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 as an example of the touch input recognition device.

Referring to FIG. 4, a portable terminal for performing a touch input recognition method according to an embodiment of the present invention includes a touch screen 410, a controller 420, a storage 430, a microphone 440, a speaker 450, and It may be configured to include a wireless transceiver 460.

The touch screen 410 may be configured as a pressure resistive touch screen or a capacitive touch screen. When the touch screen 410 is a pressure resistive film type, the controller 420 provides coordinate values (X, Y) corresponding to the touched trajectory and the magnitude of the touched pressure to the controller 420, and the touch screen 410 has a capacitance. In the case of the method, the controller 420 may provide the coordinate values X and Y corresponding to the touched trajectory and the amount of change in capacitance corresponding to the touch input.

Also, the touch screen 410 displays a graphic 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 420.

When the coordinate values (X, Y) are provided from the touch screen 410 at predetermined time intervals in response to a user's touch input, the controller 420 compares two consecutively inputted coordinate values to increase or decrease the coordinate values. The inflection point is determined based on the determined increase / decrease feature. When the predetermined coordinate value is determined to be the inflection point, a symbol value corresponding to the increase / decrease feature of the coordinate values provided before the inflection point is determined.

In addition, the controller 420 determines a symbol value corresponding to the size of the touch input by comparing the touch input size Z provided from the touch screen 410 with a preset reference value.

Thereafter, the controller 420 generates a symbol array composed of the input coordinate values and the symbol values corresponding to the touch input size, and then searches for a symbol array identical to the generated symbol array in the database stored in the storage unit 430 in advance. By determining the execution event corresponding to the type and size of the touch input, and executes the determined execution event.

The function of the controller 420 as described above may be performed by the touch input processing module 421, which may be implemented as a software program, or may be implemented as a separate semiconductor chip.

The controller 420 may include a voice codec 423 for processing voice data transmitted and received during a voice call. The voice codec 423 receives a user's voice provided from the microphone 440, converts the converted voice 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 460. It is transmitted to the other party's portable terminal.

In addition, the voice codec 423 decodes the voice of the counterpart provided from the portable terminal of the voice call counterpart via the wireless transceiver 460 and converts the voice of the counterpart into an analog signal and provides it to the speaker 450.

The storage unit 430 may be configured of a nonvolatile memory such as a flash memory, an electrically erasable and programmable read only memory (EEPROM), and at least one symbol array and a touch corresponding to each of the at least one symbol array. A database consisting of input type and / or execution event information is stored.

The microphone 440 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 420. In addition, the speaker 450 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.

The wireless transceiver 460 is a well-known technology, and thus is not illustrated in detail, but may include a duplexer, a high frequency processor, and an intermediate frequency processor, and transmits a radio frequency (RF) signal induced in the antenna ANT. The radio frequency signal received through the duplexer is converted into an intermediate frequency and then converted into a baseband signal and then provided to the controller 420, and the baseband signal provided from the controller 420 is provided. 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 transceiver 460 may use a direct conversion method that directly demodulates a signal from a received high frequency signal without frequency conversion, instead of a heterodyne reception method that demodulates the high frequency signal into a baseband signal through 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 process according to an embodiment of the present invention.

FIG. 2 is a graph illustrating coordinate values and sizes of touch inputs provided from a touch screen in a touch input recognition process according to an exemplary embodiment of the present invention.

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

4 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>

410: touch screen 420: control unit

421: touch input processing module 430: storage unit

Claims (9)

In the touch input recognition method, Receiving at least one coordinate value corresponding to the touched trajectory and the size of the touch input; Determining an inflection point based on the provided at least one coordinate value; Determining a first symbol value based on an increase / decrease characteristic of at least one coordinate value provided before the predetermined coordinate value when a predetermined coordinate value of the at least one coordinate value is a coordinate value of an inflection point; Determining a second symbol value corresponding to the magnitude of the provided touch input; And And determining an execution event corresponding to the determined first and second symbol values. The method of claim 1, wherein the determining of the inflection point based on the at least one coordinate value provided comprises: The first coordinate value is determined as the coordinate value of the inflection point when the increase / decrease characteristic of the first coordinate value and the second coordinate value among the first and second coordinate values sequentially provided at the predetermined time intervals is different. Touch input recognition method, characterized in that. The method of claim 1, wherein the magnitude of the touch input is one of a magnitude of touch pressure and an amount of change in capacitance corresponding to the touch input. The method of claim 1, wherein the determining of the second symbol value corresponding to the magnitude of the provided touch input comprises: And determining the second symbol value based on a result of comparing the size of the touch input with a preset reference value. The method of claim 1, wherein the determining of the event corresponding to the determination symbol value comprises the execution event corresponding to the determined first symbol value and the second symbol value. Generating a symbol array composed of the first symbol value and a second symbol value; And And retrieving a symbol array identical to the generated symbol array from a database in which at least one symbol array and an execution event corresponding to each of the at least one symbol array are stored. A touch screen providing coordinate values corresponding to the touched trajectory and the size of the touch input at predetermined time intervals; A storage unit for storing a list of execution events; And At least one coordinate value and a size of a touch input provided from the touch screen, and when a predetermined coordinate value among the provided at least one coordinate value is an inflection point, an increase or decrease of at least one coordinate value provided before the predetermined coordinate value Determining a first symbol value based on the first symbol value, determining a second symbol value corresponding to the size of the provided touch input, and searching for the execution event corresponding to the determined first symbol value and the second symbol value in the storage unit. Touch input recognition device including a control unit. The method of claim 6, wherein the control unit If the increase and decrease characteristics of the first coordinate value and the second coordinate value among the first coordinate values and the second coordinate values sequentially provided from the touch screen are different from each other, the first coordinate value is converted to the coordinate value of the inflection point. Touch input recognition device, characterized in that the determination. The method of claim 6, wherein the control unit And determining the second symbol value based on a comparison result of comparing the size of the touch input with a preset reference value. The method of claim 6, wherein the control unit And generating the symbol array including the first symbol value and the second symbol value, and searching the execution event by searching for the same symbol array as the generated symbol array in the storage unit.

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