KR101439552B1 - Method of controlling operation of portable terminal and the portable terminal - Google Patents

Abstract

A touch screen device comprising: a touch screen; and a controller for determining whether a coordinate value of a locus of the symbol changes when a symbol is drawn on the touch screen, and when the coordinate value of the locus of the symbol changes, Of the locus is changed for each axis of the coordinate, and when an inflection point as a point at which the increase / decrease value of the coordinates of the locus changes is detected, an increasing / decreasing value of the coordinates of the locus And a controller for performing the operation when the stored increase / decrease value column corresponds to a predetermined operation. Accordingly, it is possible to easily identify a symbol inputted through the touch screen with a small processor resource, and to perform an operation according to a symbol.

Portable terminal, touch screen

Description

[0001] The present invention relates to a method of controlling an operation of a portable terminal using a touch screen,

The present invention relates to a method of controlling an operation of a mobile terminal and a mobile terminal thereof, and more particularly, to a method of controlling an operation of a mobile terminal that enables easy identification of a symbol input on a touch screen, And a portable terminal.

As mobile communication technology develops and mobile terminal manufacturing technology develops, various types of portable terminals that perform various functions and are easy to carry are being introduced. The portable terminal is becoming smaller in size for convenience of carrying. In recent years, a portable terminal having a touch screen capable of simultaneously performing functions of a display device and an input device has also been introduced, and its use has been expanded. A user who uses a portable terminal having a touch screen searches a menu of the portable terminal through the touch of the touch screen and uses necessary functions.

Also, when a user draws a symbol or the like on a touch screen, a technique of reading a symbol inputted by the portable terminal and performing an operation corresponding to the symbol is disclosed in Korean Patent Laid-Open Nos. 2001-19275 and 2004-83788 Lt; / RTI >

In the related art, the portable terminal has to read a symbol inputted by touching or drawing on the touch screen by the user, and compare the symbol corresponding to the input symbol with the symbol corresponding to the command. However, since the input symbol is input by hand by the user, the shape of the input symbol is not exactly the same as that of the symbol stored in the portable terminal. Therefore, the mobile terminal must determine whether the symbol input by the user matches the pre-stored symbol within the error range, which consumes a lot of processor resources.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and provide a method of controlling an operation of a mobile terminal, which enables a user to easily identify a symbol input on a touch screen and perform an operation accordingly.

According to an aspect of the present invention, there is provided a touch screen device including: a touch screen; a touch screen; a touch screen; A change value of a coordinate indicating whether the coordinate value changes in a direction of increasing or decreasing is stored for each axis of the coordinate and when an inflection point which is a point where a change value of the coordinate of the locus changes is detected And a control unit for storing the increase / decrease value of the coordinates of the locus with the inflection point as a starting point and performing the operation when the row of increase / decrease values corresponds to a predetermined operation.

Here, the portable terminal may further include a database storing the columns of the increase / decrease values and the corresponding operations.

Here, the controller may determine the current operation mode when performing the operation corresponding to the stored increase / decrease value column, and may perform the operation in relation to the current operation mode.

Here, the controller may calculate the distance between the multi-touch inputs and perform the operation based on the distance between the multi-touch inputs when performing an operation corresponding to the stored increase / .

Here, the controller may enlarge the image in proportion to the distance between the multi-touch inputs when the operation corresponding to the column of the increase / decrease values is an image enlarging operation.

The controller may reduce the image in proportion to the distance between the multi-touch inputs if the operation corresponding to the column of the increase / decrease values is image reduction.

According to another aspect of the present invention, there is provided a mobile terminal including a touch screen, the method comprising the steps of: determining whether a coordinate value of a locus of the symbol changes when a symbol is drawn on the touch screen; Storing an increase / decrease value of a coordinate indicating whether the coordinate value changes in a direction of increasing or decreasing when the coordinate value of the coordinate changes, for each axis of the coordinate, Storing an increase / decrease value of the coordinates of the locus with an inflection point as a starting point when an inflection point is detected; and performing the operation when the stored sequence of increase / decrease values corresponds to a predetermined operation And provides an operation control method.

Here, the step of performing the operation may include determining the current operation mode, and performing the operation in relation to the current operation mode.

Wherein performing the operation includes calculating a distance between the multi-touch inputs if there is a multi-touch input. And performing the operation based on the distance between the multi-touch inputs.

Here, the step of performing the operation may include enlarging the image in proportion to the distance between the multi-touch inputs if the operation corresponding to the column of the increase / decrease values is an image enlarging operation.

Here, the step of performing the operation may be a step of reducing the image in proportion to the distance between the multi-touch inputs if the operation corresponding to the column of the increase / decrease values is image reduction.

According to the method of controlling the operation of the mobile terminal and the mobile terminal according to the present invention as described above, it is possible to easily identify symbols inputted through the touch screen with a small amount of processor resources and perform operations according to symbols

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. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements 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 expressions include plural expressions 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 are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

First, the configuration of a portable terminal according to an embodiment of the present invention will be described with reference to FIG. Here, the portable terminal may be a terminal such as a handheld computer, a mobile phone, and a PDA (Personal Digital Assistants), and the present invention is not limited thereto and can be commonly applied to all terminals having a touch screen Will be apparent to those skilled in the art.

1 is a block diagram of a portable terminal according to the present invention.

Referring to FIG. 1, a portable terminal includes a touch screen 10, a controller 30, and a database 30. The touch screen 10 includes a display 12 and a touch screen panel 14. The display 12 may be a liquid crystal display (LCD), an organic light emitting diode (OLED) panel, or the like. The touch screen panel 14 is responsive to a touch and outputs a corresponding touch input signal to the control unit 30.

The controller 20 controls the overall operation of the portable terminal and controls the operation of the portable terminal in response to a touch input signal from the touch screen panel 14 according to the present invention.

For this, the control unit 20 determines whether the coordinate values of the locus of points at which the user touches the touch screen 10 change. The control unit 20 stores the increase / decrease value of the coordinates when the coordinates of the locus change. The increase / decrease value of the coordinate indicates whether the coordinate value changes in the direction of increasing or decreasing. That is, the increase / decrease value of the coordinates has a positive value when the coordinate value of the locus drawn by the user increases, and has a negative value when the coordinate value decreases. The increase / decrease value of this coordinate is determined for each of the X-axis and Y-axis of the coordinate.

Then, the control unit 20 detects a point where the increase / decrease value of the coordinate changes in the locus drawn by the user, and in the present invention, this point is called the inflection point. Subsequently, the control unit 20 detects the inflection point and stores the increase / decrease value of the coordinates of the locus with the inflection point as the starting point.

The inflection point means a point where the coordinate value of the locus increases and then decreases, a point that decreases and then increases, or a point that does not change when it increases or decreases. In this embodiment, when any one of the increase / decrease value of the X axis and the increase / decrease value of the Y axis changes at a predetermined point, the predetermined point becomes an inflection point. The increase / decrease value in each axis is determined based on the inflection point as the starting point. The increase / decrease value and the inflection point of such coordinates will be described with reference to Fig.

FIG. 2 is a diagram for explaining an increase / decrease value and an inflection point of coordinates according to the present invention.

FIG. 2 shows the traces of the green touch points when the user touches the touch pen or finger on the touch screen. 2 (a) shows a case where a user draws a circle on a touch screen, Fig. 2 (b) shows a case where a user draws a quadrangle on a touch screen, Fig. 2 A triangle is drawn.

Referring to FIG. 2 (a), when the user draws a symbol circle in the direction of the arrow on the touch screen, if the start point of the circle is the point indicated by the reference numeral 40, The coordinate value of the locus increases, and the coordinate value of the locus increases on the Y axis. Therefore, the increase / decrease value from point 40 to 41 is (+, +) because it is (X: increase, Y: increase). The coordinate value of the trajectory increases from the point 41 to the point 42 on the X axis, and the coordinate value of the trajectory decreases on the Y axis. Therefore, the increment / decrement values from point 40 to point 41 are expressed as (+, -) since (X: increase, Y: decrease). From point 42 to point 43, the coordinate value of the trajectory decreases in the X-axis, and the coordinate value of the trajectory decreases in the Y-axis. Therefore, the increase / decrease value from point 42 to point 43 is expressed as (-, -) since (X: decrease, Y: decrease). In this case, the points 40, 41, and 43 are points at which the increase / decrease value of the coordinate changes, and thus become inflection points.

In this way, when a circle is drawn in the direction of the arrow from the starting point indicated by reference numeral 40, as shown in Fig. 2 (a), the row of the increase / decrease values related to the circle is (+, + -) (-, -) (-, +).

Referring to FIG. 2 (b), when the user draws a rectangle on the touch screen in the direction of the arrow with the point indicated by the reference numeral 50 as the starting point, the column of the increase / ) (+, 0) (0, -) (-, 0).

2C, when the user draws a triangle in the arrow direction on the touch screen, if the starting point of the rectangle is the point indicated by the reference numeral 60, the row of the increase / decrease values related to the triangle becomes (- , -) (+, 0) (-, +).

In this way, when the user draws a symbol on the touch screen, the controller 20 stores the increase / decrease values of the coordinates of the corresponding trajectory, and compares the row of increase / decrease values with the column of the increase value values stored in the database 30.

The database 30 stores the columns of the increment / decrement values and corresponding actions. 3 is a database according to an embodiment of the present invention. Referring to FIG. 3, the database 30 stores a sequence of increase / decrease values of coordinates of a symbol locus shown in FIG. 2 and a corresponding operation. For example, an image enlarging operation is corresponded to the columns (+, +) (-, -) (-, +) of the increasing and decreasing values (80). The message creation operation is associated with the column of increment / decrement values (0, +) (+, 0) (0, -) (-, 0) (82). The telephone number registration operation is corresponded to the columns (-, -) (+, 0) (-, +) of the increase / decrease values (84).

When a symbol is drawn on the touch screen by the user, the control unit 20 stores the increase / decrease values according to the coordinate values of the symbol, reads the operation corresponding to the column of the increase / decrease values with reference to the database 30 from the database 30 And performs the corresponding operation.

Alternatively, the control unit 20 may sense the mulitple touch input on the touch screen. In this case, the control unit 20 calculates the distance between touch points. When a symbol is drawn on the touch screen by the user, the control unit 20 stores the increase / decrease values according to the coordinate values of the symbol and performs an operation corresponding to the column of the increase / decrease values. Based on the calculated distance, .

Hereinafter, embodiments of a method for easily identifying a symbol input on a touch screen in a configured mobile terminal will be described.

4 is a flowchart for explaining a first embodiment of a method of controlling an operation of a portable terminal according to the present invention.

Referring to FIG. 4, the mobile terminal determines in step 101 whether there is a touch input by a user. When the user touches the touch screen, the mobile terminal determines in step 103 whether the coordinate value of the locus of the points touched by the user changes. The mobile terminal determines whether the X and Y coordinate values of the symbol trajectory are changed by the user to easily identify symbols drawn on the touch screen.

When the coordinate value of the symbol locus changes, the portable terminal stores the increasing / decreasing value of the coordinate in step 105. [ As described above, the increase / decrease value of the coordinates has a positive value when the coordinate value of the locus drawn by the user increases, and has a negative value when the coordinate value decreases. The increase / decrease value of this coordinate is determined for each of the X-axis and Y-axis of the coordinate.

After storing the increase / decrease value of the coordinates of the locus, the control unit 20 determines whether an inflection point at which the increase / decrease value of the coordinate changes in step 107 is detected. When the inflection point is detected, the control unit 20 returns to step 105 and stores the increase / decrease value of the coordinates of the trajectory again. When the inflection point is detected, it means that the increase / decrease value of the coordinates has been changed. Therefore, when the inflection point is detected, the portable terminal stores the increase / decrease value of the coordinates of the locus drawn by the user.

Then, the portable terminal determines in step 109 whether the touch input is terminated. The touch input may be terminated by an operation such as a user removing a finger or a touch pen from the touch screen. If the touch input has not been terminated, the portable terminal returns to step 107.

If the touch input is terminated, the portable terminal determines whether there is an operation corresponding to the column of the increase / decrease values stored in step 111. [ Specifically, the portable terminal refers to its own database, for example, the database 30 shown in FIG. 1, and determines whether there is an operation corresponding to the column of the increment / decrement values. If an operation corresponding to the column of the increment / decrement values is present in the database, the portable terminal performs the corresponding operation in step 113.

As described above, in this embodiment, there is one operation corresponding to one column of the increment / decrement values. However, in other embodiments, there may be several actions corresponding to a row of increment / decrement values.

These other embodiments will be described with reference to Figs. 5 and 6. Fig.

FIG. 5 shows symbols according to another embodiment of the present invention, and corresponding increase / decrease values and inflection points.

5 (a) and 5 (b) show symbols having the same shape. As shown in Figs. 5 (a) and 5 (b), these symbol trajectories are drawn in different directions, so that the rows of the increase and decrease values of these coordinates are different from each other.

The columns of the increase / decrease values of the coordinates of the locus shown in FIG. 5A are (+, +) - (-, -) (-, +) and the coordinates of the locus shown in FIG. The sequence of increment / decrement values is (-, +) (+, +) (-, +) (-, -). Two or more motions can be stored corresponding to these trajectories.

Fig. 6 shows a database storing operations relating to the trajectories shown in Fig.

As shown in Fig. 6, two or more operations can be corresponded to a row of coordinate increase / decrease values of one locus. When the user draws the circle symbol on the touch screen in the arrow direction shown in FIG. 5 (a), that is, in the clockwise direction, the row of the increase / decrease value of the coordinates of the locus is (+, + (-, +). In this case, if the current operation mode is music playback mode, the portable terminal plays back the next song. If the current operation mode is the image display mode, the portable terminal displays the enlarged image. In addition, if the current operation mode is the moving image playback mode, the fast playback operation is performed.

When the user draws the circle symbol on the touch screen in the direction of the arrow shown in FIG. 5 (b), that is, in the counterclockwise direction, the row of the increase and decrease values of the coordinates of the locus is (-, + , +) (-, -). In this case, if the current operation mode is the music playback mode, the portable terminal plays back the previous song. If the current operation mode is the image display mode, the portable terminal displays the reduced image. If the current operation mode is the moving image playback mode, the fast reverse playback operation is performed.

As described above, according to this embodiment, the portable terminal determines the current operation mode when performing the operation corresponding to the column of the increase / decrease values of the coordinates of the symbol locus. Then, the mobile terminal performs an operation related to the current operation mode corresponding to the column of the increase / decrease values of the coordinates of the symbol locus.

7 is a diagram illustrating a case where a user draws a symbol on a touch screen according to the present invention.

As shown in FIG. 7, when a user inputs a symbol or the like on a touch screen using a finger, the user can input a symbol corresponding to a desired operation with the finger fixed on the touch screen and the other finger Function can be executed.

Accordingly, the portable terminal according to the present invention uses the distance (l) between the trajectory drawn on the finger and the thumb of the user when performing the operation corresponding to the column of the increase / decrease values of the coordinates of the symbol locus.

An embodiment for performing an operation using such a user's thumb and the distance l between loci drawn on different fingers will be described with reference to Fig.

8 is a flowchart for explaining a second embodiment of a method of controlling an operation of the portable terminal of the present invention.

Referring to FIG. 8, in step 201, the mobile terminal determines whether there is a mulitple touch input by the user. As shown in FIG. 7, the user can touch more than two points on the touch screen.

If there is a multi-touch input, the mobile terminal determines in step 203 whether the coordinate value of the locus of the points touched by the user changes. The mobile terminal determines whether the coordinate value of the locus changes in order to easily identify the symbol drawn on the touch screen by the user.

When the coordinate value of the symbol locus changes, the portable terminal stores the increase and decrease values of the X and Y coordinates in step 205. [ After storing the increase / decrease value of the coordinates of the locus, the control unit 20 determines whether an inflection point at which the increase / decrease value of the coordinate changes in step 207 is detected. When the inflection point is detected, the control unit 20 returns to step 105 and stores the increase / decrease value of the coordinates of the trajectory again.

Then, the portable terminal determines in step 209 whether the touch input has been terminated. The touch input may be terminated by an operation such as a user removing a finger or a touch pen from the touch screen. If the touch input has not been terminated, the portable terminal returns to step 207.

If the touch input is terminated, the portable terminal calculates the distance between the multi-touch inputs, that is, the distance between the touch points, in step 211. Referring to Fig. 7, the distance between the touch points means the distance (l) between the locus drawn by the thumb and the index finger.

Subsequently, the portable terminal determines whether there is an operation corresponding to the column of the increase / decrease values stored in step 213. [ If an operation corresponding to the column of the increase / decrease values is present in the database, the portable terminal performs the corresponding operation in step 215. At this time, the portable terminal performs the corresponding operation based on the distance between the touch points.

More specifically, if the operation corresponding to the column of the increase / decrease values is image enlargement, the portable terminal can determine the image enlargement ratio in proportion to the distance between the touch points. If the user wants to enlarge the image, for example, the distance between the thumb and the index finger can be increased. Accordingly, the portable terminal can enlarge the image significantly.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

1 is a block diagram of a portable terminal according to the present invention.

FIG. 2 is a view for explaining an increase / decrease value and an inflection point according to the present invention.

3 illustrates a database according to an embodiment of the present invention.

4 is a flowchart for explaining a first embodiment of a method of controlling an operation of a portable terminal according to the present invention.

FIG. 5 is a diagram illustrating symbols according to another embodiment of the present invention, and corresponding increase / decrease values and inflection points. Referring to FIG.

6 is a diagram showing a database storing operations related to the trajectories shown in Fig.

7 is a diagram illustrating a case where a user draws a symbol on a touch screen according to the present invention.

8 is a flowchart for explaining a second embodiment of a method of controlling an operation of the portable terminal of the present invention.

Description of the Related Art

10: Touch screen 12: Display

14: touch screen panel 20:

30: Database

Claims (11)

With a touch screen, Determining whether at least one of the X and Y coordinate values of the trajectory of the symbol changes when the symbol is drawn on the touch screen, and if at least one of X, Y coordinate values of the trajectory of the symbol changes, The X and Y increase / decrease values of the coordinates indicating whether the coordinate value changes in the direction of increasing, not changing, or decreasing are stored for the X and Y axes of the coordinates, and X, Y When an inflection point which is a point at which the variation of the increase / decrease value is detected, stores X and Y increase / decrease values of the coordinates of the locus with an inflection point as a starting point, and if the stored X and Y increase / decrease values column corresponds to a predetermined operation, And a controller The X and Y increase / decrease values are indicated by one of the flags indicating increase, no change, decrease, respectively, Wherein the inflection point is a point at which the X, Y coordinate value increases, decreases, decreases, increases, increases or decreases but does not change. The method according to claim 1, Further comprising: a database storing the columns of the increment / decrement values and the corresponding operations. The method according to claim 1, Wherein the controller determines the current operation mode when performing the operation corresponding to the stored increase / decrease value column, and performs the operation in relation to the current operation mode. The method according to claim 1, Wherein the control unit calculates the distance between the multi-touch inputs and performs the operation based on the distance between the multi-touch inputs when performing the operation corresponding to the stored increase / Mobile terminal. 5. The mobile terminal of claim 4, wherein the controller enlarges the image in proportion to a distance between the multi-touch inputs when the operation corresponding to the stored increase / decrease value column is an image enlarging operation. 5. The mobile terminal of claim 4, wherein the controller reduces the image in proportion to the distance between the multi-touch inputs if the operation corresponding to the stored increase / decrease value sequence is image reduction. In a portable terminal including a touch screen, Determining whether at least one of the X, Y coordinate values of the trajectory of the symbol changes when a symbol is drawn on the touch screen; The X and Y coordinate values of the coordinates indicating whether the X, Y coordinate values change in the direction of increasing, changing, or decreasing when the X, Y coordinate values of the locus of the symbol change, Storing for X, Y axes, Storing an X, Y increase / decrease value of the coordinates of the locus with an inflection point as a start point when an inflection point, which is a point at which the X, Y increase / decrease value of the locus coordinates changes, And performing the operation if the stored X, Y increase and decrease columns correspond to a predetermined operation, The X and Y increase / decrease values are indicated by one of the flags indicating increase, no change, decrease, respectively, Wherein the inflection point is a point at which the X, Y coordinate value increases, decreases, decreases, increases, increases or decreases but does not change. 8. The method of claim 7, wherein performing the operation further comprises: Determining a current operating mode; And performing the operation in relation to the current operation mode. A method of controlling an operation of a portable terminal using a touch screen. 8. The method of claim 7, wherein performing the operation further comprises: If there is a multi-touch input, calculating a distance between the multi-touch inputs; And performing the operation on the basis of the distance between the multi-touch inputs. 10. The touch screen according to claim 9, wherein the step of performing the operation comprises enlarging the image in proportion to the distance between the multi-touch inputs when the operation corresponding to the stored increase / A method of controlling an operation of a mobile terminal using a mobile terminal. The method as claimed in claim 9, wherein the step of performing the operation is a step of reducing the image in proportion to the distance between the multi-touch inputs when the operation corresponding to the column of the increment / A method of controlling an operation of a portable terminal.

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