KR101483303B1 - Method For Recognizing Touch Input And Apparatus For Performing The Same - Google Patents

Abstract

Disclosed is a touch input recognition method capable of accurately recognizing a touch input inputted by a user and having a small processing load, and an apparatus for performing the same. First, when at least one coordinate value corresponding to the touched trajectory is provided at a predetermined time interval, the inflection point is determined based on the provided at least one coordinate value, and if a predetermined coordinate value of at least one coordinate value is a coordinate value , A symbol value is determined based on an increasing / decreasing feature of at least one coordinate value provided before a predetermined coordinate value, and an event corresponding to the determined symbol value is retrieved. Accordingly, since the event corresponding to the touch input provided by the user is searched based on the increase / decrease characteristic of the coordinate value and is executed, the processing load is small and the false recognition rate of the touch input can be reduced.

Touch screen, touch input, symbol, recognition

Description

TECHNICAL FIELD [0001] The present invention relates to a touch input recognizing method and a device performing the touch input recognizing method.

The present invention relates to a touch input recognition method, and more particularly, to a touch input recognition method applicable to a device having a touch screen and an apparatus for performing the same.

2. Description of the Related Art Recently, with the rapid development of processor technology, the increase of memory capacity, and the development of multimedia coding technology, functions included in mobile terminals such as mobile phones and PDAs (Personal Digital Assistants) have been diversified.

As the functions of the portable terminal are variously increased, menus for utilizing the functions provided in the portable terminal are increasing. Therefore, it is difficult to utilize various functions provided in the portable terminal by using only the conventional keypad having a fixed matrix arrangement .

In addition, in recent years, the application programs provided in the portable terminal have changed from numeric or text-based interfaces to graphically based interfaces, so that conventional graphic, application programs can not be efficiently used only by using numerals, characters or arrow keys, There is an increasing demand for a display device having a wider display screen while having a variety of image display functions such as multimedia playback and portable Internet functions.

In accordance with the above-mentioned trend, recently, a touch screen capable of simultaneously performing an input and a display in a single device without a separate keypad has been adopted in a portable terminal.

Since the touch screen can use the portable terminal intuitively and interactively only by touching a button or a graphic object displayed in the display area with a finger or a pen, the input operation is simplified and the interface object displayed for input is optimized for the application So that the user can easily recognize the input interface and can easily input the input interface.

In addition, since the display device and the touch pad are integrally installed, the touch screen does not need to include a separate space for installing the keypad as in the conventional portable terminal, so that a display device having a larger visible screen can be employed in a portable terminal have.

The touch screen can be classified into contact type capacitance type, infrared light sensing type, surface ultrasonic type, piezoelectric type, integral type tension measurement type, and resistive type. Among them, the touch screen has high transmittance, The resistance film method which is less influenced by the operating environment is generally used.

However, since a general portable terminal is manufactured in a small size for portability, the size of a touch screen provided in the portable terminal is also limited, and a number of menu items or applications There is a limit to the number of buttons for controlling the program.

In order to compensate for the above disadvantages, a touch input method of a touch screen included in a portable terminal includes a touch input method of simply inputting a menu or a button displayed on a touch screen, A method of selecting a predetermined menu or controlling the execution of a predetermined application program by providing a predetermined two-dimensional gesture such as a figure, a symbol and the like is used.

Korean Patent Publication No. 2007-05583 (a method and apparatus for generating one-dimensional signals using a two-dimensional pointing device) recognizes a trajectory of a two-dimensional gesture input by a user on a touch screen and generates a one-dimensional input Quot; a "

However, since Korean Patent 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 user-input two-dimensional gesture, There is a disadvantage that the processing load of the portable terminal is increased due to the complicated process. In addition, there is a disadvantage that the recognition accuracy may be lowered due to the complicated processing as described above.

Accordingly, it is a first object of the present invention to provide a touch input recognition method capable of accurately recognizing a touch input inputted by a user and having a small processing load for recognition.

A second object of the present invention is to provide a touch input recognizing device capable of accurately recognizing a touch input inputted by a user and having a small processing load for recognition.

According to another aspect of the present invention, there is provided a touch input recognition method including: receiving at least one coordinate value corresponding to a touched trajectory at predetermined time intervals; Determining an inflection point on the basis of at least one coordinate value; and determining an inflection point based on at least one of the coordinate values provided before the predetermined coordinate value when the predetermined coordinate value of the at least one coordinate value is a coordinate value of the inflection point Determining a symbol value based on the determined symbol value, and searching for an event corresponding to the determined symbol value. The step of determining an inflection point based on the provided at least one coordinate value may include calculating a difference between the first coordinate value and the second coordinate value among the first coordinate value and the second coordinate value sequentially provided at the predetermined time interval If the features are different, the first coordinate value may be determined as the coordinate value of the inflection point. Determining the symbol value based on the increase / decrease feature of at least one coordinate value provided before the predetermined coordinate value when the predetermined coordinate value of the at least one coordinate value is the coordinate value of the inflection point, Determining a symbol value corresponding to an increase / decrease feature of at least one coordinate value provided prior to the predetermined coordinate value from a predetermined at least one symbol value corresponding to the at least one symbol value, For example, Wherein the step of searching for an event corresponding to the determined symbol value comprises the step of determining whether the event item to be executed for each of at least one symbol value or symbol array is a symbol value or a symbol array Can be searched.

According to another aspect of the present invention, there is provided a touch input recognition method comprising: receiving at least one coordinate value corresponding to a touched trajectory at predetermined time intervals; The method comprising the steps of: obtaining a cumulative distance and a coordinate value input number based on at least one coordinate value; determining an inflection point based on the provided at least one coordinate value; Determining a symbol value based on an increasing / decreasing feature of at least one coordinate value provided before the predetermined coordinate value in the case of the inflection point; obtaining a speed proportional value based on the cumulative distance and the number of coordinate input values; And searching for an event corresponding to the symbol value and the speed proportional value. Wherein the obtaining of the cumulative distance and the number of coordinate input values based on the provided at least one coordinate value comprises calculating a difference value of two coordinate values successively provided from among the at least one coordinate value, Acquiring the cumulative distance and counting at least one input coordinate value to obtain the number of input coordinate values. The step of determining an inflection point based on the provided at least one coordinate value may include calculating a difference between the first coordinate value and the second coordinate value among the first coordinate value and the second coordinate value sequentially provided at the predetermined time interval If the features are different, the first coordinate value may be determined as the coordinate value of the inflection point. Determining a symbol value based on an increasing / decreasing feature of at least one coordinate value provided before the predetermined coordinate value when the predetermined coordinate value of the at least one coordinate value is an inflexion point corresponds to an increasing / decreasing feature of the coordinate value A symbol value corresponding to an increase / decrease feature of at least one coordinate value provided before the predetermined coordinate value among the predetermined at least one symbol value may be determined. The obtaining of the speed proportional value based on the cumulative distance and the number of coordinate input values may obtain the speed proportional value by obtaining a ratio of the cumulative distance and the number of coordinate input values. Wherein the step of searching for an event corresponding to the symbol value and the speed proportional value comprises the steps of generating a symbol array based on the symbol value and the speed proportional value and for each symbol array comprised of a symbol value and a speed proportional value And searching for a symbol array that is the same as the symbol array in a database in which an event item is stored in advance.

According to another aspect of the present invention, there is provided a touch input recognition method comprising: receiving at least one coordinate value corresponding to a touched trajectory at predetermined time intervals; Determining an inflection point based on at least one coordinate value received from the at least one coordinate value; and determining an inflection point based on the at least one coordinate value provided before the predetermined coordinate value when the predetermined coordinate value of the at least one coordinate value is a coordinate value of the inflection point Obtaining a length of a touched trajectory based on at least one of the determined inflection points and searching for an event corresponding to the symbol value and the obtained length of the touched trajectory; . Wherein obtaining the length of the touched trajectory based on at least one of the determined inflection points comprises calculating distances of two adjacent inflection points of the at least one determined inflection point, And accumulating distances to obtain the total length of the touched trajectory.

According to another aspect of the present invention, there is provided a touch input recognition apparatus comprising: a touch screen for providing coordinate values corresponding to touched trajectories at predetermined time intervals; And a storage unit storing at least one of a symbol array composed of at least one symbol value and an execution event list corresponding to each of the at least one symbol value and the symbol array, and a storage unit storing at least one coordinate value Determining a symbol value based on an increasing / decreasing feature of at least one coordinate value provided before the predetermined coordinate value when the given coordinate value of the provided at least one coordinate value is an inflection point, And a controller for searching for events in the storage unit. Wherein when the first coordinate value and the second coordinate value provided sequentially from the touch screen at predetermined time intervals are different from each other in the increase / decrease characteristics of the first coordinate value and the second coordinate value, the control unit changes the first coordinate value to the inflection point As shown in FIG. The control unit may generate a symbol array based on at least one of the determined symbol values and search the symbol array that is the same as the generated symbol array in the storage unit. The controller may obtain the cumulative distance and the number of coordinate input values based on the provided at least one coordinate value, and obtain the speed proportional value based on the obtained cumulative distance and the number of input coordinate values. The control unit may generate a symbol array composed of the obtained symbol value and the speed proportional value, and search the symbol array that is the same as the generated symbol array in the storage unit. The controller may obtain the velocity proportional value by calculating a ratio of the cumulative distance to the coordinate input.

According to the touch input recognition method and the apparatus for performing the touch input recognition, when the coordinate value corresponding to the trajectory touched by the user is provided at predetermined time intervals, the inflection point is determined based on the provided coordinate value, And symbols are converted into symbol values corresponding to the increase / decrease characteristics of the coordinate values. Also, a velocity proportional value is calculated based on the input number and the cumulative distance of the coordinate values between the inflection points to generate a symbol array composed of the symbol value and the velocity proportional value, and the same symbol array as the generated symbol array is searched in the database And executes an event corresponding to the searched symbol array.

Accordingly, since the event corresponding to the touch input provided by the user is searched based on the increase / decrease characteristic of the provided coordinate value and is executed, 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 by simultaneously considering the speed proportional value modeled by the speed touched by the user and the symbol value obtained by symbolizing the increasing / decreasing feature of sequentially inputted coordinate values, a plurality of events can be executed by one touch input There is an effect.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. 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 a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular < RTI ID = 0.0 > term < / RTI > includes plural representations unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations 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 to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

FIGS. 1A and 1B are conceptual diagrams illustrating a touch input recognition process according to an embodiment of the present invention. FIG. 1A illustrates a case where a user draws a circle clockwise on a touch screen.

1A, when the user draws a circle in a clockwise direction starting from the first inflection point 10, the touch screen displays a coordinate value corresponding to a locus touched by the user at a predetermined time interval (i.e., a circle locus) X, Y). Here, the predetermined time interval may have a different value depending on the touch screen, for example, 20 ms.

The touch screen sequentially provides coordinate values corresponding to the touched trajectory every 20 ms starting from the coordinate values (1,8) of the first inflection point (10). For example, the touch screen displays coordinate values (1,8), (2,12), (5,14), (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 increasing and decreasing characteristic of the coordinate values (X, Y) from the first inflection point 10 to the second inflection point 20 is determined by a predetermined coordinate value (for example, (5, 14) (+, +) Because the X value and the Y value of the coordinate value are both increased as compared with (2, 12), for example.

The increase / decrease feature of the coordinate values input between the second inflection point 20 and the third inflection point 30 when judged by the same method as above is determined by comparing the coordinate value of the predetermined coordinate value with the previously provided coordinate value, (+, -) because the Y value has decreased.

The increase / decrease feature of the coordinate values inputted between the third inflection point 30 and the fourth inflection point 40 can be (-, -) because the X value and the Y value of the coordinate value are both decreased, The increase / decrease feature of the coordinate values input between the inflection point 40 and the first inflection point 10 can be (-, +) since the X value of the coordinate value decreases and the Y value increases.

As a result, when the user draws a circle clockwise starting from the first inflection point 10, the increasing and decreasing feature of the provided coordinate value every predetermined time interval (for example, 20 ms) is (+, + (-, -), (-, -), (+, -), (-, +), and the increase / decrease feature can be stored as an array by replacing with the preset symbol value.

In the embodiment of the present invention, when the X value or the Y value of the predetermined coordinate value is increased compared with the X value or the Y value of the previous coordinate value, . ≪ / RTI >

(+, -), (+, 0), (-, +), (-, -), (-, 0), (0, +) (0, -) and (0, 0), and each of the increase / decrease features may be symbolized by symbol values of A, B, C, D, E, F, G, .

For example, since the increasing and decreasing characteristics of coordinate values corresponding to the trajectory of a circle shown in FIG. 1A are (+, +), (+, -), (-, -), E, and D, and the symbol values may be stored in an array form.

The touch screen recognizing device searches the database stored in the storage unit for the same symbol array as the symbol array [A, B, C, D] and recognizes the touch input inputted by the user by executing an event corresponding to the searched symbol array And executes an event corresponding to the recognized touch input.

In the embodiment of the present invention, the inflection point means a point at which any one of the X value and the Y value of the coordinate value changes. For example, in FIG. 1A, the previous coordinate value of the second inflection point 20 is (5, 14), the coordinate value of the second inflection point is (8, 15), and the coordinates after the second inflection point are 14), the increasing / decreasing characteristic changes from (+, +) to (+, -) on the basis of the second inflection point 20, so that the coordinate values 8 and 15 become inflection points.

FIG. 1B shows an example of touch input recognition when the user draws a square in a clockwise direction on the touch screen.

Referring to FIG. 1B, when the user draws a square in the clockwise direction starting from the first inflection point 11, the touch screen displays the locus touched by the user at a predetermined time interval (for example, 20 ms) (X, Y).

For example, the touch screen displays coordinate values (1,1), (1,3), (1,5) and (1,7) at 20 ms intervals from the first inflection point 11 to the second inflection point 21 And the increase / decrease characteristic of the coordinate value is determined from the provided coordinate value. That is, the increasing / decreasing characteristic of the coordinate values (X, Y) from the first inflection point 11 to the second inflection point 21 is determined by a predetermined coordinate value (for example, (1, 5) For example, since the X value of the coordinate value is not changed and the Y value is increased as compared with (1, 3), it can be (0, +).

Here, when the change of the coordinate value is within the predetermined value, it can be determined that the coordinate value does not change.

The X value of the coordinate value is increased and the Y value is not changed (+) because the coordinate value input between the second inflection point 21 and the third inflection point 31 is increased or decreased in the same manner as described above. , 0).

The increase and decrease characteristics of the coordinate values inputted between the third inflection point 31 and the fourth inflection point 41 can be (0, -), and between the fourth inflection point 41 and the first inflection point 11 The increasing and decreasing feature of the input coordinate values can be (-, 0).

As a result, when the user draws a quadrangle in a clockwise direction starting from the first inflection point 11 as shown in FIG. 1B, the increase / decrease characteristic of the coordinate value provided for every predetermined time interval (for example, 20 ms) , (-, 0), (-, 0), (-, 0), and the increase / decrease characteristic may be symbolized with preset symbol values G, C, H and F.

If the user draws a rectangle in the counterclockwise direction with respect to the first inflection point 11 in FIG. 1B, the increase / decrease characteristics of the coordinate values are (+, 0), (0, +) 0, -), and the corresponding symbol values may be C, G, F, H.

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

First, when power is applied to a device equipped on a touch screen, that is, a touch input recognition device, the touch input recognition device initializes a symbol array value j (i.e., j = 0) (step 201).

Thereafter, when the user provides a predetermined touch input to the touch screen, the touch screen provides a coordinate value (X, Y) corresponding to the touched locus at a predetermined time interval (e.g., 20 ms) (step 203).

The touch input device compares two consecutively inputted coordinate values among sequentially provided coordinate values to determine the increase / decrease characteristic of the coordinate value (step 205).

In addition, the touch input recognizing device determines an inflection point based on the increase / decrease feature of the provided coordinate values (step 207), and when a predetermined coordinate value among the provided coordinate values is determined as an inflection point, A symbol value corresponding to the increase / decrease feature of the coordinate values provided before the inflection point among the values is determined (step 209).

In step 207, if the first coordinate value and the second coordinate value sequentially provided from the touch screen differ from each other in the first coordinate value and the second coordinate value, 1 coordinate value as the coordinate value of the inflection point.

Then, the touch input recognizing device generates an array of symbols composed of the symbol values determined in step 209 (step 211), and increments the symbol array value j (i.e., j = j ++) (step 213).

Then, the touch input recognizing device searches the previously stored database for the same symbol array as the generated symbol array, and determines whether the symbol array exists in the database (step 217).

Here, the touch input recognizing apparatus may include a database in which at least one symbol array and a list of execution events corresponding to each of the at least one symbol array are stored. The execution event refers to the type of operation performed by the user in response to the type of touch input and / or the touch speed.

If the symbol array is present in the database, the touch input recognizing device determines whether an execution event corresponding to the symbol array can be determined (step 219). If it is determined that the execution event corresponding to the symbol array can be determined, And executes the execution event (step 221).

If it is determined that the symbol array determined in step 217 does not exist in the database, or if it is determined in step 219 that the execution event corresponding to the symbol array can not be determined, the process returns to step 203 to sequentially perform the subsequent steps.

For example, when the symbol array determined at a predetermined time is composed of [A, B], if there are two or more symbol arrays including the symbol array [A, B] in the database, , It repeats steps 203 to 219 until the execution event corresponding to the determined symbol array can be determined, thereby increasing the number of symbol values included in the symbol array.

3A and 3B are conceptual diagrams illustrating a touch input recognition process according to another embodiment of the present invention. FIG. 3A shows a case where a user draws a quadrangle in a clockwise direction on a touch screen, FIG. And the increase / decrease characteristics and the speed with respect to the coordinate values of the rectangles.

3A and 3B, when the user draws a quadrangle in a clockwise direction starting from the first inflection point 12, the touch screen corresponds to a rectangular locus touched by the user at predetermined time intervals (for example, 20 ms) (X, Y).

The touch input recognizing device determines the increasing / decreasing characteristic of the coordinate value corresponding to the locus between the inflection points based on the coordinate value provided on the touch screen, and symbolizes the coordinate value into the symbol value corresponding to the determined increasing / decreasing characteristic.

The symbol values obtained by symbolizing the increase / decrease characteristics are (0, +), (+, 0), (0, -) H, and F, respectively.

The touch input recognizing device determines the increasing / decreasing feature of the coordinate value provided from the touch screen as described above, and calculates the speed ratio value to take into account the touch speed input by the user.

Specifically, the touch input recognizing device obtains a speed ratio value by calculating a ratio between the distance between the inflection points and the number of coordinate values input between the inflection points (i.e., the distance between the inflection points / the number of input coordinate values) .

3A, when the distance (difference in Y value) between the first inflection point 12 and the second inflection point 22 is 6 and three coordinate values are input, the speed ratio value is 2 And the velocity proportional value between the second inflection point 22 and the third inflection point 32 is 1.6 because the distance (difference in X value) is 10 and the number of input coordinate values is 6.

The velocity proportional value between the third inflection point 32 and the fourth inflection point 42 is 1.5 by the same method as described above and the velocity proportional value between the fourth inflection point 42 and the first inflection point 12 is 2.5.

Then, the touch input recognizing device generates the symbol array based on the symbol value and the speed proportional value corresponding to the increase / decrease feature of the coordinate value input between the inflection points as described above.

For example, the square array of squares shown in FIG. 3A may be [(G, 2), (C, 2), (H, 2), (F, 3) As shown in FIG. Here, it is assumed that the decimal point of the speed proportional value is rounded off.

Then, the touch input recognizing device searches the database for a symbol array which is the same as the symbol array composed of the symbol value and the speed proportional value corresponding to the increase / decrease characteristic of the inputted coordinate value, and executes the event corresponding to the searched symbol array.

As shown in FIGS. 3A and 3B, in the touch input recognition method according to another embodiment of the present invention, a variety of detailed events are executed by considering the type of touch input and the touch input speed, .

For example, when predetermined graphic information is displayed in a display area of a touch screen, when a user draws a circle at a first speed on a touch screen, the currently displayed graphic information is enlarged to a first magnification, And to enlarge the graphic information at a second magnification higher than the first magnification when a circle is drawn at a faster second speed.

Alternatively, when a predetermined document is displayed in the display area of the touch screen, the scroll speed of the displayed document may be varied in proportion to the speed of the rectangle drawn by the user on the touch screen.

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

First, when power is applied to the touch input recognition device having a touch screen, the touch input recognition device initializes the coordinate value input number i and the symbol array value j (i = 0, j = 0) (Step 401).

Thereafter, when the user provides a predetermined touch input to the touch screen, the touch screen provides coordinate values (X, Y) corresponding to the touched trajectory at predetermined time intervals (e.g., 20 ms) (step 403).

When the coordinate value is inputted, the touch input recognizing device increases the number (i) of coordinate value input (i = i ++) (step 405).

Further, the touch input recognizing device calculates the cumulative distance based on the provided coordinate value (step 407).

Here, the touch input recognizing device can calculate the cumulative distance by various methods. For example, if any one of the coordinate values X or Y does not change from two coordinate values sequentially provided, the difference of the coordinate values that have changed is calculated, and the difference The cumulative distance can be calculated by summing the values obtained by the same method.

Alternatively, when both the coordinate values X and Y vary from two coordinate values provided sequentially, the average of the difference between the X value and the Y value is calculated to calculate the distance to the two coordinate values, The cumulative distance may be calculated by adding the distance values obtained by the above method.

In step 409, the touch input device compares two coordinate values continuously input among the coordinate values sequentially provided to determine the increase / decrease characteristic of the coordinate value.

In addition, the touch input recognizing device determines an inflection point based on the increase / decrease feature of the provided coordinate values (step 411), and if the predetermined coordinate value among the provided coordinate values is determined to be an inflection point, A symbol value corresponding to the increase / decrease feature of the coordinate values provided before the inflection point among the values is determined, and a velocity proportional value is obtained (step 413).

If it is determined in step 411 that it is not an inflection point, the process returns to step 403 and steps 403 to 411 are repeatedly performed. In addition, in step 413, the velocity proportional value is calculated by calculating the ratio between the distance between each inflection point and the number of coordinate values input between the inflection points (i.e., the velocity proportional value = distance between inflection points / number of input coordinate values) can do.

After that, the touch input recognizing device generates symbol arrays composed of the symbol value and the speed proportional value acquired in step 413 (step 415), resets the coordinate input number i (i = 0) The array value j is incremented (i.e., j = j ++) (step 417).

Then, the touch input recognizing device searches the previously stored database for the same symbol array as the symbol array generated in step 415 (step 419), and determines whether the symbol array exists in the database (step 421).

Here, the touch input recognizing apparatus may include a database storing at least one symbol array composed of symbol values and velocity proportional values, and a list of execution events corresponding to each of the at least one symbol array.

If the symbol array is present in the database, the touch input recognizing device determines whether an execution event corresponding to the symbol array can be determined (step 423). If it is determined that the execution event corresponding to the symbol array can be determined Execution event is executed (step 425).

If it is determined that the symbol array determined in step 421 does not exist in the database, or if it is determined in step 423 that the execution event corresponding to the symbol array can not be determined, the process returns to step 403 and an execution event corresponding to the touch input of the user is determined Steps 403 to 423 are repeatedly performed until the time t is reached.

Alternatively, in another embodiment of the present invention, the number of executions of steps 403 to 423 may be counted, and an error message may be displayed in the display area of the touch screen when the counted value is equal to or greater than a predetermined value.

FIG. 5 is a conceptual diagram illustrating a touch input recognition process according to another embodiment of the present invention, in which a user draws a spiral of a predetermined length clockwise on a touch screen.

Referring to FIG. 5, when the user draws a spiral in a clockwise direction starting from the predetermined position 50, the touch screen provides coordinate values (X, Y) corresponding to the spiral trace touched by the user at predetermined time intervals.

The touch input recognizing device determines the inflection points 51 to 60 based on the increasing / decreasing feature of the coordinate value provided from the touch screen, and symbolizes the increasing / decreasing feature with the symbol value corresponding to the increasing / decreasing feature of the helical trajectory between the determined inflection points .

For example, in the case of a helix as shown in FIG. 5, the increasing and decreasing characteristics between the positions 50 and 60 of the helix start from (-, +), (+, + -), (-, -), (-, +), (+, -), A, B, E, D, A, B, E, D, A, and B are converted to the symbol values.

Then, the touch input recognizing device searches the database for the same symbol array as the symbol array [D, A, B, E, D, A, B, E, It is determined that the type of touch input provided by the touch input is a clockwise spiral.

When the inflection point is determined as described above, the touch input recognition apparatus calculates distances a, b, c, d, e, f, g, h, i, j, k between neighboring inflection points, The total length of the helix (i.e., a + b + c + d + e + f + g + h + i + j + k) is calculated. Then, an event corresponding to the symbol array and the entire length of the spiral is executed. Here, for simplification of the calculation, the touch input recognizing device can calculate the straight line distance between neighboring inflection points as shown in FIG. 5, and calculate the total length of the helix by accumulating the calculated straight line distances.

Alternatively, when the user draws a circle or a rectangle on the touch screen as shown in FIGS. 1A and 1B, the area of a circle or a rectangle is calculated using the coordinates of each inflection point, and the calculated area and the increasing / Lt; RTI ID = 0.0 > a < / RTI >

As shown in FIG. 5, in another embodiment of the present invention, the touch input is recognized by simultaneously considering the increase / decrease characteristics of the touch input, the length of the touch input or the area of the touch input, There is an advantage that more various and detailed events can be executed by touch input.

For example, when the execution event corresponding to the spiral drawn on the touch screen in the clockwise direction is an enlargement of the graphic information, and the execution event corresponding to the spiral drawn in the counterclockwise direction is defined as the reduction of the graphic information, The enlargement ratio of the graphic information can be changed in proportion to the length and the reduction ratio of the graphic information can be changed in proportion to the length of the helix drawn in the counterclockwise direction.

FIG. 6 is a block diagram showing a configuration of a touch input recognizing apparatus according to an embodiment of the present invention, which shows a portable terminal as an example of a touch input recognizing apparatus.

6, a portable terminal for performing a touch input recognition method according to an exemplary embodiment of the present invention includes a touch screen 510, a control unit 520, a storage unit 530, a microphone 540, a speaker 550, And a wireless transceiver unit 560. The wireless transmission /

The touch screen 510 may be a contact type capacitance type, an infrared light sensing type, a surface ultrasonic wave type, a piezoelectric type, or a resistive type. The touch screen 510 may include a touch screen 510 corresponding to a touch input input by the user, To the control unit 520. [0050]

For example, when the touch screen 510 is used with a resistive touch method, when a touch input is generated in a predetermined area of the touch screen 510 by a user, the touch screen 510 senses a potential difference of a touched position, (X, Y) of the touched position in the display area of the touch screen 510 to the control unit 520 based on the potential difference and supplies the coordinate value (X, Y) of the touched position to the control unit 520. Based on the control of the control unit 520, And displays a graphical user interface screen such as an execution screen of a program.

In addition, when the touch input is provided in a two-dimensional manner such as a rectangle, circle, line, or the like, the touch screen 510 displays a coordinate value of a predetermined position of a touched trajectory at a predetermined time interval (for example, 20 ms) (520).

When the coordinate value (X, Y) is provided from the touch screen 510 at predetermined time intervals in accordance with the touch input of the user, the control unit 520 compares the two coordinate values continuously input, And determines an inflection point based on the determined increase / decrease feature.

If the predetermined coordinate value is determined to be an inflection point, the control unit 520 determines a symbol value corresponding to the increase / decrease feature of the coordinate values provided before the inflection point, and generates a symbol array based on the determined symbol value.

Then, the control unit 520 searches the database stored in the storage unit 530 for the same symbol array as the generated symbol array, determines an execution event corresponding to the symbol array, and executes the determined execution event, And executes an operation corresponding to the input.

Alternatively, the control unit 520 may determine the inflection point based on the coordinate values (X, Y) provided at predetermined time intervals from the touch screen 510, determine the increase / decrease characteristics of the coordinate values between the inflection points, Calculate the number of inputs and the cumulative distance.

The control unit 520 determines a symbol value corresponding to the determined increase / decrease feature, obtains a speed ratio value based on the coordinate value input number and the cumulative distance, and then calculates a speed ratio value based on the obtained symbol value and the speed ratio value And generates symbol arrays.

Then, the control unit 520 searches the database stored in the storage unit 530 for the same symbol array as the symbol array composed of the symbol value and the speed proportional value, determines the execution event corresponding to the symbol array, and executes the determined execution event , And executes an operation corresponding to the touch input provided by the user.

The functions of the control unit 520 as described above may be performed by the touch input processing module 521, which may be implemented by a software program, or may be implemented by a separate semiconductor chip.

The control unit 520 may include a voice codec 523 for processing voice data transmitted and received during a voice call. The voice codec 523 receives the user's voice provided from the microphone 540, converts the received voice into a digital signal, encodes the converted digital signal to conform to the voice communication standard, and provides the converted voice to the wireless transceiver 560, To be transmitted to the portable terminal of the other party.

The voice CODEC 523 decodes the voice of the other party provided from the portable terminal of the voice communication partner through the wireless transmission / reception unit 560, converts the voice into an analog signal, and provides the voice to the speaker 550.

The storage unit 530 may be a nonvolatile memory such as a flash memory, an electrically erasable programmable read only memory (EEPROM), or the like, and may include at least one symbol arrangement and an execution corresponding to the at least one symbol arrangement Event information is stored in database form.

2 and 4 can be stored in the storage unit 530 in a form of a program that can be read and executed by the control unit 520. [

The microphone 540 receives a voice of a user at the time of voice communication, converts the received voice into an electric signal, and provides the voice to the control unit 520. Also, the speaker 550 receives the voice signal of the voice communication partner decoded from the voice codec 523 and outputs it as a signal of an audible frequency band.

The radio transceiver 560 may include a duplexer, a high-frequency processor, and an intermediate-frequency processor. The RF transceiver 560 may receive a radio frequency (RF) signal transmitted from the antenna ANT Converts a radio frequency signal received and received through the duplexer into an intermediate frequency and then converts the radio frequency signal into a baseband signal to provide the baseband signal to the control unit 520, Converts the intermediate frequency signal into an intermediate frequency signal, and converts the intermediate frequency signal into a radio frequency signal again, and provides the signal to the antenna ANT through the duplexer.

Alternatively, the wireless transceiver unit 560 may use a direct conversion method of directly demodulating a high frequency signal received without frequency conversion, instead of the heterodyne receiving method of demodulating the high frequency signal as described above via an intermediate frequency conversion into a baseband signal have.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

1A and 1B are conceptual diagrams for explaining a touch input recognition process 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.

3A and 3B are conceptual diagrams illustrating a touch input recognition process according to another embodiment of the present invention.

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

5 is a conceptual diagram illustrating a touch input recognition process according to another embodiment of the present invention.

6 is a block diagram showing a configuration of a touch input recognizing apparatus according to an embodiment of the present invention.

Description of the Related Art

510: touch screen 520: control unit

521: Touch input processing module 530:

Claims (18)

A method of recognizing a touch input performed in a device having a touch screen, Acquiring a plurality of coordinate values according to a predetermined time interval in a locus of the touch signal received by the touch screen; Determining a first coordinate value that is a first inflection point of the plurality of coordinate values based on the increase / decrease characteristics of the plurality of coordinate values; Determining a first symbol value as a symbol value corresponding to an increase / decrease feature of a coordinate value acquired before the first coordinate value among a plurality of symbol values previously set so as to correspond to the increase / decrease characteristics of the coordinate value; Determining a second coordinate value that is a second inflection point obtained after the first inflection point among the plurality of coordinate values; Determining a second symbol value as a symbol value corresponding to an increase / decrease feature of a coordinate value obtained before the second coordinate value among the plurality of symbol values; Generating a first symbol array based on the determined first and second symbol values; And And searching for an event corresponding to the first symbol array. The method of claim 1, wherein the determining of the first coordinate value, which is the first inflection point of the plurality of coordinate values, Wherein the first coordinate value is determined as the first coordinate value, which is the first inflection point, when the first coordinate value and the coordinate value obtained after the predetermined time are different from each other. delete 2. The method of claim 1, Wherein a symbol array identical to the first symbol array is searched in a database in which an event item to be executed for each of a plurality of symbol values or a plurality of symbol arrays is stored in advance. A method of recognizing a touch input performed in a device having a touch screen, Acquiring a plurality of coordinate values according to a predetermined time interval in a locus of the touch signal received by the touch screen; Calculating a difference between coordinate values sequentially obtained according to the predetermined time interval among the plurality of coordinate values, and accumulating the difference to obtain an accumulated distance; Counting the number of times of obtaining the plurality of coordinate values to obtain the number of the plurality of coordinate values; Determining a first coordinate value that is an inflexion point of the plurality of coordinate values based on the increase / decrease characteristics of the plurality of coordinate values; Determining a first symbol value as a symbol value corresponding to an increase / decrease feature of a coordinate value acquired before the first coordinate value among a plurality of symbol values previously set so as to correspond to the increase / decrease characteristics of the coordinate value; Obtaining a first velocity proportional value based on the cumulative distance from the poetic point of the locus of the touch signal to the first coordinate value and the number of coordinate values; Generating a first symbol array based on the first symbol value and the first speed proportion value; And And searching for an event corresponding to the first symbol array. delete The method of claim 5, wherein the determining the first coordinate value, which is an inflexion point of the plurality of coordinate values, Wherein the first coordinate value is determined as the first coordinate value, which is the inflection point, when the first coordinate value and the coordinate value obtained after the predetermined time are different from each other. delete 6. The method of claim 5, wherein obtaining the first speed- Wherein the first speed ratio value is obtained by obtaining a ratio of the cumulative distance up to the first coordinate value to the number of the coordinate values. 6. The method of claim 5, wherein searching for an event corresponding to the first symbol array comprises: Searching for a symbol array identical to the first symbol array in a database in which an event item to be executed for each symbol array composed of a symbol value and a speed proportional value is stored in advance. A method of recognizing a touch input performed in a device having a touch screen, Acquiring a plurality of coordinate values according to a predetermined time interval in a touch trajectory received by the touch screen; Determining a first coordinate value that is a first inflection point of the plurality of coordinate values based on the increase / decrease characteristics of the plurality of coordinate values; Determining a first symbol value as a symbol value corresponding to an increase / decrease feature of a coordinate value acquired before the first coordinate value among a plurality of symbol values previously set so as to correspond to the increase / decrease characteristics of the coordinate value; Determining a second coordinate value that is a second inflection point obtained after the first inflection point among the plurality of coordinate values; Obtaining a length from the first coordinate value to the second coordinate value; Generating a first symbol array based on the first symbol value and the obtained length; And And searching for an event corresponding to the first symbol array, Wherein obtaining the length comprises: A third coordinate value, which is a third inflection point obtained after a second inflection point of the plurality of coordinate values, is determined, a length between the first coordinate value and the second coordinate value, and a length between the second coordinate value and the third coordinate value And acquiring the length by accumulating the length. delete A touch screen that acquires a plurality of coordinate values according to a predetermined time interval in a locus indicated by a touch signal; A storage unit storing at least one of at least one symbol value and a symbol array composed of the at least one symbol value, and storing an execution event list corresponding to each of the at least one symbol value and the symbol array; And Acquiring a plurality of coordinate values at the predetermined time intervals on the touch screen, obtaining a first coordinate value as a first inflection point based on the increasing / decreasing characteristic of the plurality of coordinate values, Determining a symbol value corresponding to an increase / decrease feature of a coordinate value obtained before the first coordinate value as a first symbol value, determining a second coordinate value as a second inflection point among the plurality of coordinate values, Determining a second symbol value as a symbol value corresponding to an increase / decrease feature of a coordinate value obtained before the second coordinate value among at least one symbol value stored in the first symbol value, and, based on the first symbol value and the second symbol value, And a control unit for generating a first symbol array and searching for events corresponding to the first symbol array in the storage unit. 14. The apparatus of claim 13, wherein the control unit Wherein the first coordinate value is determined as the first coordinate value, which is the inflection point, when the first coordinate value is different from the increase / decrease characteristic of the coordinate value acquired after the predetermined time interval. 14. The apparatus of claim 13, wherein the control unit Wherein the storage unit searches for the same symbol array as the first symbol array. 14. The apparatus of claim 13, wherein the control unit Calculating a difference between coordinate values sequentially obtained according to the predetermined time interval among the plurality of coordinate values, accumulating the difference to obtain an accumulated distance, counting the number of times of acquiring the plurality of coordinate values, And acquires a first speed ratio value based on the cumulative distance and the number of coordinate values. 17. The apparatus of claim 16, wherein the control unit A second symbol array configured by the first symbol value, the second symbol value, and the first rate proportional value, and searches the storage unit for the same symbol array as the second symbol array. Recognition device. 17. The apparatus of claim 16, wherein the control unit Wherein the first speed ratio value is obtained by obtaining a ratio of the cumulative distance and the number of coordinate values.

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