KR101344302B1 - Method For Scrolling Using Touch Screen And Portable Terminal Having Scroll Function Using Touch Screen - Google Patents

Abstract

Disclosed are a scrolling method using a touch screen and a portable terminal having a scrolling function using a touch screen, which have a small processing load and can easily perform a scrolling function. First, a predetermined screen is displayed on the display area of the touch screen, and a space between the first position of the first side of the four sides constituting the circumference of the display area and the second position of the second side except the first side of the four sides. When a line is drawn through the touch, an area of the first area among the two areas divided by the line drawn in the display area is obtained, and then a predetermined screen is scrolled according to the size of the obtained area. Therefore, the execution screen can be easily scrolled, and the processing load is small because the scrolling is performed by comparing the coordinate value of the line drawn through the touch with the coordinate value of the display area of the touch screen.

Handheld terminal, touch screen, scroll, width

Description

Method for Scrolling Using Touch Screen And Portable Terminal Having Scroll Function Using Touch Screen}

The present invention relates to a scrolling method, and more particularly, to a scrolling method using a touch screen that can be applied to a portable terminal having a touch screen and a portable terminal having a scroll function using a touch screen.

Recently, portable terminals such as mobile phones and PDAs (Personal Digital Assistants) include more and more functions corresponding to the convergence of communication and broadcasting and the generation evolution of mobile communication methods.

For example, recent portable terminals have a function of playing a multimedia file such as digital broadcasting reception, mobile Internet, still image and video recording, navigation or audio, video, text, etc., in addition to video and voice call functions. Touch screens are employed as input / output devices in order to easily use functions and maximize the display screen.

The touch screen can be used interactively and intuitively by simply touching a button or graphic object displayed on the display device with a finger or a pen, so that the input operation can be simplified and the input screen can be more easily recognized and the accuracy of the input can be easily recognized. Since it can be increased and installed integrally with the display device, there is an advantage that the display device having a larger visible screen can be adopted in the portable terminal by reducing the installation space of the keypad.

However, even when the portable terminal adopts a touch screen, the screen size of the touch screen (within several inches) is smaller than that of a general display device such as a computer monitor. It is not suitable to display all on the screen and a scroll function is provided to compensate for this.

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) allows a user to input two-dimensional touch input in a clockwise or counterclockwise direction through an input device such as a touch pad. If present, a method of converting the information into a one-dimensional input to provide another scrolling function is disclosed.

However, Korean Patent Laid-Open Publication No. 2007-05583 shows that the processing load increases due to many variables to be considered in the process of converting a set of two-dimensional inputs to a set of one-dimensional inputs through a two-dimensional trajectory input by a user, and a complicated calculation process. There are disadvantages.

Accordingly, a first object of the present invention is to provide a scrolling method using a touch screen with a small processing load and capable of easily performing a scrolling function.

In addition, a second object of the present invention is to provide a portable terminal having a scroll function using a touch screen with a small processing load and which can easily perform a scroll function.

In the scrolling method using a touch screen according to an embodiment of the present invention for achieving the first object of the present invention described above, a predetermined screen is displayed on a display area of the touch screen, and a circumference of the display area is formed. Drawing a line through a touch between a first position of a first side of four sides and a second position of a second side of the remaining sides except for the first side of the four sides, and dividing through the line in the display area Acquiring an area of the first area of the two areas, and scrolling the predetermined screen according to the size of the acquired area. The scrolling method using the touch screen includes determining a position of the first side and the second side on which the line is drawn among four sides constituting the circumference of the touch screen, and the predetermined screen is displayed based on the determined position. The method may further include determining a direction to be scrolled. The scrolling method using the touch screen may further include determining an order in which the lines are drawn and determining a direction in which the predetermined screen is scrolled based on the determined order. In the scrolling method using the touch screen, determining whether the first position and the second position are vertices facing each other around the touch screen, and when the first position and the second position are the vertices, And determining that the drawn line is diagonal and scrolling the predetermined screen to the maximum. When the first position and the second position are the vertices, the determining that the drawn line is a diagonal line and scrolling the predetermined screen to the maximum includes determining the direction of the diagonal line and determining the direction of the diagonal line. The method may further include determining a direction in which the predetermined screen is to be scrolled based on. Acquiring an area of a first area of the two areas of the display area divided by the line, for the first area using the coordinate value of the first location and the coordinate value of the second location. Area can be obtained. The scrolling of the predetermined screen corresponding to the size of the acquired area includes determining a scroll ratio corresponding to the size of the acquired area and scrolling the predetermined screen based on the set scroll ratio. It may include. Acquiring an area of a first area of the two areas of the display area divided by the line may include the first position, the second position, and the first side when the first side and the second side are adjacent to each other. The area of the triangle connecting the vertices of the first and second sides can be obtained. Acquiring an area of a first area of the two areas of the display area divided by the line may be opposite to the line of the line and the touch screen when the first and second sides are opposite sides. The area of the square formed between one side can be obtained.

In addition, the portable terminal having a scroll function according to an embodiment of the present invention for achieving the above-described second object of the present invention displays a predetermined screen on the display area and provides a coordinate value corresponding to the generated touch input. A line drawn in the display area based on the coordinate value received and provided with a coordinate value corresponding to a line drawn between a first side and a second side among four sides constituting the touch screen and the perimeter of the display area And a control unit for acquiring an area for a first area among the two areas divided by and determining a scroll ratio of the predetermined screen based on the obtained area. The controller may determine positions of the first side and the second side on which the line is drawn among four sides constituting the circumference of the display area, and determine a scroll direction of the predetermined screen based on the determined position. The controller may determine the order in which the lines are drawn and determine the scroll direction of the predetermined screen based on the determined order in which the lines are drawn.

According to the above-described scrolling method using a touch screen and a portable terminal having a scrolling function using a touch screen, the user can determine the circumference of the display area while the execution screen for a predetermined application program is displayed on the display area of the touch screen. When a line is drawn by touch on different sides constituting the scroll, the scroll ratio and the scroll direction of the execution screen are determined and scrolled according to the area of the figure formed by the drawn line and the direction of the drawn line or the order in which the lines are drawn.

Therefore, the execution screen can be easily scrolled, and the processing load is small because scrolling is performed by comparing the coordinate value of the line drawn through the touch with the coordinate value of the display area of the touch screen.

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.

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 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 herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. The singular < RTI ID = 0.0 > term < / RTI > includes plural representations unless the context clearly dictates 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 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.

1 is a flowchart illustrating a scrolling method using a touch screen according to an embodiment of the present invention, and FIG. 2 illustrates a user interface screen displayed on a display area of a touch screen during a scrolling process using the touch screen shown in FIG. 1. .

3 illustrates a user interface screen for explaining a scroll direction corresponding to a position of a touch input line in the scrolling process using the touch screen illustrated in FIG. 1, and FIG. 4 illustrates a scroll using the touch screen illustrated in FIG. 1. In the process, when the touch input line is diagonal, the user interface screen for explaining the scroll direction is displayed.

1 to 4, if a user executes a predetermined application after the portable terminal is initialized, an execution screen 300 of the application is displayed on the display area 200 of the touch screen (step 101).

As shown in FIG. 2A, when the execution screen 300 of the application program is larger than the display area 200 of the touch screen, the execution screen 300 is displayed on the display area 200 of the touch screen. ), A vertical scroll bar 201 for scrolling up and down and a horizontal scroll bar 203 for scrolling left and right may be displayed.

Subsequently, when the user draws a line 250 through a touch between two different sides of the four sides 210 to 240 constituting the display area 200 of the touch screen (step 103), the user draws the line 250 on the drawn line 250. The corresponding coordinate value is extracted (step 105).

For example, as illustrated in (b) of FIG. 2, the user may designate a predetermined position 211 and a first position of the first side 210 of the four sides 210 to 240 that constitute the display area 200 of the touch screen. When the line 250 is drawn between the predetermined positions 221 of the two sides 220, the portable terminal extracts a coordinate value corresponding to the drawn line 250.

In addition, the portable terminal determines whether the line 250 drawn on the display area 200 of the touch screen is diagonal based on the coordinate value extracted in step 105 (step 107).

In detail, the display area 200 of the touch screen is configured in the form of a quadrangle having four sides 210 to 240 and the portable terminal can know the coordinates of the vertex of the quadrangle. It may be determined whether a diagonal line is drawn in the display area 200 by comparing the coordinates of the vertex.

If it is determined in step 107 that the line 250 drawn on the display area 200 is not diagonal, the portable terminal calculates the area of the figure formed by the line 250 (step 109).

For example, as illustrated in FIG. 2B, when a line 250 is drawn between the first side 210 and the second side 220 of the display area 200, the portable terminal has a first side. Compute the area of the triangle 205 consisting of (210), the second side 220 and the line 250, and as shown in (c) of FIG. 2, the first side 210 and the third side 230 When the line 250 is drawn between the squares 255, the area of the quadrangle 207 including the first side 210, the second side 220, the third side 230, and the line 250 is calculated.

Then, the portable terminal determines the scroll ratio corresponding to the calculated area (step 111). Here, the portable terminal can determine the scroll ratio by reading the scroll ratio corresponding to the area calculated in the table previously stored in the storage unit as shown in FIG. 5.

In addition, the portable terminal may determine the position of the line 250 drawn in step 103 (step 113), and determine the scroll direction based on the determined position of the line 250 (step 115).

Here, the portable terminal of the line 250 based on the coordinate value corresponding to the start of the line 250 and the coordinate value corresponding to the end of the line 250 of the coordinate values corresponding to the line 250 drawn through the touch The location can be determined.

For example, as illustrated in (a) of FIG. 3, a line 250 is disposed between the first side 210 and the fourth side 240 of the four sides forming the periphery of the display area 200 of the touch screen. If drawn in, the execution screen 300 scrolls up, and if the line 250 is drawn between the first side 210 and the second side 220, the execution screen 300 scrolls down. and may be configured to scroll down. In addition, when the line 250 is drawn between the second side 220 and the third side 230, the execution screen 300 scrolls to the left, and the line 250 includes the third side 230. ) And the fourth side 240 may be configured to scroll the execution screen 300 to the right.

Alternatively, as shown in FIG. 3B, when the line 250 is drawn between the first side 210 and the third side 230 on the left side of the vertical center line 251, the execution screen 300 is displayed. When the line 250 is drawn between the first side 210 and the third side 230 on the right side of the vertical center line 251, the execution screen 300 may be configured to scroll to the right. It may be. Alternatively, when the line 250 is drawn between the second side 220 and the fourth side 240 on the horizontal center line 252, the execution screen 300 is scrolled up, and the line 250 is the horizontal center line. When drawn between the second side 220 and the fourth side below 252, the execution screen 300 may be configured to scroll down.

If it is determined in step 107 that the line 250 drawn on the display area 200 of the touch screen is a diagonal line, the portable terminal determines the maximum scroll ratio (step 117).

Alternatively, when the user draws a diagonal line on the display area 200, the first or last part of the execution screen 300 may be displayed on the screen. For example, if the execution screen 300 is a 50-page document screen and 20 pages are displayed in the display area 200, if the user draws a diagonal line in the display area 200, one page or 50 pages of the execution screen 300 are displayed. May be configured to be displayed on the screen.

Thereafter, the portable terminal determines the direction of the diagonal using the coordinate values of both ends of the diagonal (step 119). Then, the scroll direction is determined based on the determined diagonal direction (step 121).

For example, as illustrated in FIG. 4, a diagonal line 255 is formed between a vertex between the first side 210 and the fourth side of the display area 200 and between the second side 220 and the third side 230. When it is determined that the drawing is drawn between the vertices of the scroll direction, the scroll direction is determined upward, and the diagonal line is a vertex between the first side 210 and the second side 220 and the third side 230 and the fourth side ( If it is determined that the drawing is drawn between the vertices between 240, the scroll direction may be determined as scroll down.

When the scroll ratio and the scroll direction are determined through the above steps, the portable terminal scrolls the execution screen 300 of the application program based on the determined scroll ratio and the scroll direction (step 109).

5 illustrates a scroll ratio corresponding to an area of an area formed corresponding to a touch input in a scrolling method using a touch screen according to an embodiment of the present invention. 5 illustrates a scroll ratio corresponding to an area generated by a line input by a user when the touch screen has a resolution of VGA level 640480.

For example, if the area of the figure formed by the line input by the user is 65000 pixels, the corresponding scroll ratio is 150 percent, and the portable terminal 1.5 times the execution screen displayed on the touch screen in a predetermined direction. Scroll.

6 is a flowchart illustrating a scrolling method using a touch screen according to another embodiment of the present invention, in which a scroll ratio and a scroll direction of an execution screen are displayed according to the size of an area formed by a line drawn by a user and the order in which the lines are drawn; This shows the process by which it is determined. In addition, FIG. 7 illustrates a user interface screen for explaining a process of scrolling according to the order in which lines are drawn in the scrolling process using the touch screen illustrated in FIG. 6.

Steps 601 to 611 shown in FIG. 6 perform the same contents as those of steps 101 to 111 shown in FIG. 1, and thus description thereof will be omitted to avoid duplication.

6 and 7, when the area of the figure formed by the line 250 drawn on the display area 200 is calculated through the steps 601 to 611, and the corresponding scroll ratio is determined, the portable terminal may determine the size of the figure. The order in which the lines 250 are drawn in the display area 200 is determined (step 613), and the scroll direction of the execution screen 300 is determined based on the determined order.

For example, as illustrated in FIG. 7A, when the line 250 is drawn from the first side 210 of the display area 200 toward the second side 220, the execution screen 300 is downward. When the screen is scrolled down and the line 250 is drawn in the direction from the second side 220 to the first side 210, the execution screen 300 may be scrolled up.

In addition, when the line 250 is drawn in the direction from the second side 220 to the third side 230, as shown in FIG. 7B, the execution screen 300 scrolls right. When the line 250 is drawn from the third side 230 to the second side 220, the execution screen 300 may be scrolled to the left.

When the user draws a line through the touch on the display area of the touch screen, the touch screen provides coordinate values corresponding to the order in which the lines are drawn, and thus the portable terminal determines the order in which the lines are drawn based on the order of the coordinate values. Can be.

Since steps 617 to 623 of FIG. 6 perform the same contents as those of steps 117 to 123 shown in FIG. 1, description thereof is omitted to avoid duplication.

8 is a block diagram illustrating a configuration of a portable terminal having a scroll function using a touch screen according to an embodiment of the present invention.

Referring to FIG. 8, a portable terminal according to an embodiment of the present invention may include a touch screen 810, a controller 820, a storage unit 830, a wireless transceiver 840, a microphone 850, and a speaker 860. It may include.

The touch screen 810 is a display device, such as a liquid crystal display (LCD) or an organic light emitting diode (OLED), and the like, and a touch pad is combined to control the control unit 820. Based on the display, a user interface such as a menu, a key, etc. of the portable terminal and an execution screen for the executed application program are displayed, and an event signal corresponding to the touch input input by the user is provided to the controller 820.

The touch screen 810 may be any one of a contact capacitive method, an infrared light sensing method, a surface ultrasonic method, a piezoelectric method, and a resistive film method, and may include an event signal corresponding to a touch input input by a user. 820).

For example, when a resistive type is used for the touch screen 810, when a touch input is generated by a user, the touch screen 810 detects a potential difference of a touched position and touches the touch area in the display area based on the detected potential difference. The X and Y coordinates of the position may be provided to the controller 820 as an event signal.

In particular, the touch screen 810 provides the controller 820 with coordinate values of the display area corresponding to the line in the order in which the lines are drawn when the user draws a line through touch while the execution screen for a predetermined application is displayed. do.

When power is supplied to the portable terminal, the controller 820 initializes the portable terminal, and when an event signal is provided from the touch screen 810 instructing the execution of a predetermined application, the controller 820 executes the application program accordingly, and executes the corresponding application. The execution screen is controlled to be displayed on the display area of the touch screen 810.

When the user draws a line in the display area while the execution screen for a predetermined application is displayed on the touch screen 810, the touch screen 810 provides the controller 820 with coordinate values of the corresponding drawn line. The controller 820 scrolls the execution screen after determining the scroll direction and the scroll ratio based on the provided coordinate values.

In detail, the controller 820 may include a scroll processing module 821 to process the scroll function as described above.

The scroll processing module 821 receives coordinate values corresponding to a user's touch input to the touch screen 810, compares the received coordinate values with the display area coordinates of the touch screen 810, and then displays the coordinate values on the display area based on the coordinates. Calculate the area of the figure formed by the drawn line.

For example, the scroll processing module 821 coordinates the circumference of the display area of the touch screen 810 with the first provided coordinate value and the last provided coordinate value among the coordinate values provided from the touch screen 810. Compared to the values, it is determined which side of the four sides constituting the display area is positioned at both ends of the drawn line. That is, the scroll processing module 821 determines the position of the line drawn by the user in the display area using the coordinate values provided from the touch screen 810 and calculates the area of the figure formed by the line based on the position.

In addition, the scroll processing module 821 may determine the order in which the lines are drawn using the provided coordinate values.

Thereafter, the scroll processing module 821 reads the scroll ratio corresponding to the determined area of the figure from the storage unit 830. In addition, the scroll processing module 821 determines the scroll direction based on the order in which the lines are drawn or the position at which the lines are drawn. Here, when the line is diagonal, the scroll processing module 821 may determine the maximum scroll ratio or control the first or last portion of the execution screen to be displayed on the screen.

The scroll processing module 821 scrolls the execution screen of the application program based on the scroll ratio and the scroll direction determined as described above.

In addition, the controller 820 may include a voice codec 823 to perform a voice call.

The voice codec 823 receives a user's voice provided from the microphone 850, converts the 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 840. It is transmitted to the other party's portable terminal.

In addition, the voice codec 823 decodes the voice of the counterpart provided from the portable terminal of the voice call counterpart through the wireless transceiver 840 and converts the voice of the counterpart into an analog signal and provides it to the speaker 860.

The controller 820 may perform overall control necessary for the operation of the portable terminal in addition to the scroll control function as described above. The controller 820 may be, for example, a mobile station modem (MSM) of the portable terminal.

The storage unit 830 may be configured of a nonvolatile memory such as a flash memory, an electrically erasable and programmable read only memory (EEPROM), and the like, and may include a system program (eg, an operating system) required for basic operation of a portable terminal. And / or other applications may be stored.

In addition, the storage 830 may store a scroll ratio corresponding to the area of the figure formed by the user's touch input.

The wireless transceiver 840 converts a radio frequency (RF) signal received through the antenna ANT into a base band signal and provides the signal to the controller 820, and the base band signal provided from the controller 820. Is converted into a radio frequency signal and output through the antenna (ANT).

The microphone 850 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 820. In addition, the speaker 860 receives the voice signal of the voice call counterpart decoded by the voice codec 823 and outputs it as a signal of an audible frequency band.

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.

1 is a flowchart illustrating a scrolling method using a touch screen according to an embodiment of the present invention.

FIG. 2 illustrates a user interface screen displayed on a display area of a touch screen in a scroll process using the touch screen shown in FIG. 1.

FIG. 3 illustrates a user interface screen for explaining a scroll direction corresponding to a position of a touch input line in a scroll process using the touch screen illustrated in FIG. 1.

FIG. 4 illustrates a user interface screen for explaining a scroll direction when a touch input line is diagonal in a scrolling process using the touch screen illustrated in FIG. 1.

5 illustrates a scroll ratio corresponding to an area of an area formed corresponding to a touch input in a scrolling method using a touch screen according to an embodiment of the present invention.

6 is a flowchart illustrating a scrolling method using a touch screen according to another embodiment of the present invention.

FIG. 7 illustrates a user interface screen for explaining a process of scrolling in accordance with the order in which lines are drawn in the scrolling process using the touch screen illustrated in FIG. 6.

8 is a block diagram illustrating a configuration of a portable terminal having a scroll function using a touch screen according to an embodiment of the present invention.

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

810: touch screen 820: control unit

821: scroll processing module 830: storage

840: wireless transceiver

Claims (14)

Displaying a predetermined screen on a display area of the touch screen; Drawing a line through a touch between a first position of a first side of four sides constituting the display area and a second position of a second side of the remaining sides except for the first side of the four sides; Acquiring an area of a first area of two areas divided by the line in the display area; And And scrolling the predetermined screen in correspondence with the size of the acquired area. The method of claim 1, wherein the scrolling method using the touch screen Determining positions of the first side and the second side on which the line is drawn among four sides constituting the circumference of the touch screen; And And determining a direction in which the predetermined screen is to be scrolled based on the determined position. The method of claim 1, wherein the scrolling method using the touch screen Determining an order in which the lines are drawn; And And determining a direction in which the predetermined screen is to be scrolled based on the determined order. The method of claim 1, wherein the scrolling method using the touch screen Determining whether the first position and the second position are vertices facing each other around the circumference of the touch screen; And And determining that the drawn line is diagonal when the first position and the second position are the vertices, and scrolling the predetermined screen to the maximum. The method of claim 4, wherein when the first position and the second position are the vertices, determining that the drawn line is a diagonal line and scrolling the predetermined screen to the maximum is performed. Determining the direction of the diagonal line; And And determining a direction in which the predetermined screen is to be scrolled based on the determined diagonal direction. The method of claim 1, wherein the obtaining of the area of the first area of the two areas of the display area divided through the line comprises: And obtaining an area of the first area using the coordinate values of the first location and the coordinate values of the second location. The method of claim 1, wherein the scrolling of the predetermined screen corresponding to the size of the acquired area comprises: Determining a scroll ratio corresponding to the size of the obtained area; And Scrolling the predetermined screen based on the set scroll ratio. The method of claim 1, wherein the obtaining of the area of the first area of the two areas of the display area divided by the line comprises: When the first side and the second side are adjacent to each other, the area of the triangle connecting the first position, the second position and the vertices of the first side and the second side is calculated. Way. The method of claim 1, wherein the obtaining of the area of the first area of the two areas of the display area divided by the line comprises: If the first side and the second side is a side facing each other, the scroll method using a touch screen, characterized in that the area of the rectangle formed between the line and one side of the side of the touch screen facing the line. A touch screen displaying a predetermined screen on a display area and providing a coordinate value corresponding to the generated touch input; And The display area is divided by the drawn line in the display area based on the coordinate value provided and provided with the coordinate value corresponding to the line drawn between the first and second sides of the four sides constituting the perimeter of the display area. And a control unit which acquires an area of a first area of two areas and determines a scroll ratio of the predetermined screen based on the obtained area. The method of claim 10, wherein the control unit A position of the first side and the second side on which the line is drawn among the four sides constituting the circumference of the display area is determined, and a scroll direction of the predetermined screen is determined based on the determined position Portable terminal with functions. The method of claim 10, wherein the control unit And a scroll function of the predetermined screen is determined based on the determined order of drawing the lines and the determined order of drawing the lines. The portable terminal of claim 10, wherein the portable terminal has a scroll function. And a storage unit for storing the scroll ratio corresponding to the area. The method of claim 13, wherein the control unit And a scroll ratio corresponding to the area is read from the storage unit to determine the scroll ratio for the predetermined screen.

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