KR20110080315A - Mobile terminal - Google Patents

Abstract

PURPOSE: A mobile terminal is provided to control a scroll rate in the scroll operation of a user using multi touch. CONSTITUTION: A mobile terminal(100) includes a touch screen and a controller. The controller determines whether a scroll operation on the front of the touch screen is a multi touch in which two or more points are touch at the same time. The controller controls a scroll rate on the basis of scroll operation information. The controller controls the scroll rate according to a fixed ratio on the basis of the scroll rate at which a user performs the scroll operation.

Description

Mobile terminal {MOBILE TERMINAL}

The present invention relates to a mobile terminal having a touch screen, and more particularly, to a mobile terminal for controlling an operation state based on multi-touch operation information.

The terminal can move It may be divided into a mobile terminal (portable terminal) and a stationary terminal according to whether or not. The mobile terminal may be further classified into a handheld terminal and a vehicle mount terminal according to whether a user can directly carry it.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and increase the function of such a terminal, it may be considered to improve the structural part and / or the software part of the terminal.

In recent years, terminals using a touch screen have increased rapidly in order to increase the convenience of use. The touch screen is an input device that recognizes an input signal of a user at a touch point when a point on the display unit is pressed with a finger or the like and is used as an output device at the same time. That is, in a terminal having a touch screen, a user inputs a signal by a touch method.

Therefore, various studies for increasing the convenience of use in a terminal having such a touch screen continue.

The present invention is to provide a mobile terminal that can simplify the user interface structure through the multi-touch input unit on the touch screen to improve user convenience.

Technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

A mobile terminal according to an embodiment of the present invention for solving the above problems is a multi-touch operation in which a scroll operation performed on the front of the touch screen and the touch screen simultaneously touches two or more points. And a controller for classifying the recognition and adjusting the scroll speed based on the scroll operation information.

The scroll speed according to an embodiment of the present invention may be determined based on a time required for dragging the pointer for a predetermined time within a predetermined range on the touch screen. The controller may adjust the scroll speed according to a preset ratio based on the scroll speed when the scroll operation is performed by a single touch pointer when the scroll operation is a multi-touch operation.

The mobile terminal according to another embodiment of the present invention for solving the above problems is a touch screen, whether the touch operation performed on any area of the touch screen is a multi-touch operation of simultaneously touching two or more points. And a controller configured to adjust to enlarge or reduce the size of a screen displayed on a predetermined area of the display unit according to the touch operation information.

The control unit according to another embodiment of the present invention may derive a time duration for the touch operation and adjust an enlargement ratio or a reduction ratio of the screen based on the touch duration.

The above embodiments are only some of the preferred embodiments of the present invention, and various embodiments reflecting the technical features of the present invention are based on the detailed description of the present invention described below by those skilled in the art. Can be derived and understood.

The mobile terminal according to at least one embodiment of the present invention configured as described above may adjust the scroll speed during a scroll operation of the user using multi-touch.

According to an embodiment of the present invention, instead of repeatedly performing one touch operation in a mobile terminal having a touch screen, it is possible to easily perform screen enlargement / reduction adjustment or screen brightness adjustment using a multi-touch operation.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
2 is a front perspective view of a mobile terminal according to an embodiment of the present invention.
3 is a front perspective view illustrating an operation example in which a scroll operation is performed in a mobile terminal according to an embodiment of the present invention.
4 is a front perspective view for explaining another operation example in which the scroll operation is performed in the mobile terminal according to an embodiment of the present invention.
5 is a flowchart illustrating an example of a method of controlling a display aspect ratio according to a multi-touch operation in a mobile terminal according to another embodiment of the present invention.
FIG. 6 is a front perspective view illustrating an example of an operation of adjusting a screen size according to a multi-touch input in a mobile terminal according to another embodiment of the present invention.
FIG. 7 is a front perspective view illustrating another operation example of adjusting a screen size according to a multi-touch input in a mobile terminal according to another embodiment of the present invention.
8 is a front perspective view for explaining another operation example of performing a screen size adjustment according to a multi-touch input in a mobile terminal according to another embodiment of the present invention.
9 is a front perspective view for explaining another operation example of performing a screen size adjustment according to a multi-touch input in a mobile terminal according to another embodiment of the present invention.

Hereinafter, a mobile terminal according to the present invention will be described in more detail with reference to the accompanying drawings. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other.

The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), navigation, and the like. However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, etc., except when applicable only to mobile terminals.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

The mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. The components shown in FIG. 1 are not essential, so that a mobile terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules that enable wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and a network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 may include, for example, Digital Multimedia Broadcasting-Terrestrial (DMB-T), Digital Multimedia Broadcasting-Satellite (DMB-S), Media Forward Link Only (MediaFLO), and Digital Video Broadcast (DVB-H). Digital broadcast signals can be received using digital broadcasting systems such as Handheld and Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be configured to be suitable for not only the above-described digital broadcasting system but also other broadcasting systems.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives a wireless signal with at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access and may be embedded or external to the mobile terminal 100. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

The location information module 115 is a module for obtaining a location of a mobile terminal, and a representative example thereof is a GPS (Global Position System) module.

Referring to FIG. 1, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the imaging mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to the use environment.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The sensing unit 140 detects a current state of the mobile terminal 100 such as an open / closed state of the mobile terminal 100, a location of the mobile terminal 100, presence or absence of a user contact, orientation of the mobile terminal, acceleration / deceleration of the mobile terminal, and the like. To generate a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. The sensing unit 140 may include a proximity sensor 141.

The output unit 150 is used to generate an output related to visual, auditory or tactile senses, which includes a display unit 151, an audio output module 152, an alarm unit 153, a haptic module 154, and a projector module ( 155) may be included.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, the mobile terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays photographed and / or received images, a UI, and a GUI.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible). and at least one of a 3D display.

Some of these displays can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

According to an implementation form of the mobile terminal 100, two or more display units 151 may exist. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another, or may be disposed integrally with one another, and may be disposed on different surfaces, respectively.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be configured in addition to an output device. Can also be used as an input device. The touch sensor may have, for example, a form of a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor may be configured to detect not only the position and area of the touch but also the pressure at the touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

In this case, the touch sensor may not only recognize a touch operation performed at a point on the front of the display unit but also recognize a multi touch that simultaneously touches two or more points. When using multi-touch as a user interface method according to an embodiment of the present invention to more conveniently implement the function control of the mobile terminal, such as scrolling, screen magnification, panning, display brightness adjustment than simple touch technology can do. When the multitouch is performed, the touch sensor generates a signal corresponding to the multitouch input and transmits the corresponding signal to the multitouch controller 182.

The proximity sensor 141 may be disposed in the inner region of the mobile terminal wrapped by the touch screen or near the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. Proximity sensors have a longer life and higher utilization than touch sensors.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the touch screen is configured to detect the proximity of the pointer by a change in an electric field according to the proximity of the pointer. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, an act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position at which the proximity touch is performed by the pointer on the touch screen means a position where the pointer is perpendicular to the touch screen when the pointer is in proximity proximity.

The proximity sensor detects a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). Information corresponding to the sensed proximity touch operation and proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 may also output a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152, so that they 151 and 152 may be classified as part of the alarm unit 153.

The haptic module 154 generates various tactile effects that the user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or may be sequentially output.

In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through the jetting or suction port, grazing to the skin surface, contact of the electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 154 may not only deliver the haptic effect through direct contact, but also may implement the user to feel the haptic effect through a muscle sense such as a finger or an arm. Two or more haptic modules 154 may be provided according to a configuration aspect of the mobile terminal 100.

The projector module 155 is a component for performing an image project function using the mobile terminal 100 and is similar to the image displayed on the display unit 151 in accordance with a control signal of the controller 180 Or at least partly display another image on an external screen or wall.

Specifically, the projector module 155 includes a light source (not shown) that generates light (for example, laser light) for outputting an image to the outside, a light source And a lens (not shown) for enlarging and outputting the image at a predetermined focal distance to the outside. Further, the projector module 155 may include a device (not shown) capable of mechanically moving the lens or the entire module to adjust the image projection direction.

The projector module 155 can be divided into a CRT (Cathode Ray Tube) module, an LCD (Liquid Crystal Display) module and a DLP (Digital Light Processing) module according to the type of the display means. In particular, the DLP module may be advantageous for miniaturization of the projector module 151 by enlarging and projecting an image generated by reflecting light generated from a light source on a DMD (Digital Micromirror Device) chip.

Preferably, the projector module 155 may be provided longitudinally on the side, front or back side of the mobile terminal 100. It goes without saying that the projector module 155 may be provided at any position of the mobile terminal 100 as occasion demands.

The memory unit 160 may store a program for processing and controlling the controller 180, and temporarily stores input / output data (for example, a phone book, a message, an audio, a still image, a video, etc.). It can also perform a function for. The memory unit 160 may also store the frequency of use of each of the data (for example, each telephone number, each message, and frequency of use for each multimedia). In addition, the memory unit 160 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. The mobile terminal 100 may operate in connection with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits data inside the mobile terminal 100 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip that stores various types of information for authenticating the usage rights of the mobile terminal 100, and includes a user identification module (UIM), a subscriber identify module (SIM), and a universal user authentication module ( Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

The interface unit may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user may be transferred. It may be a passage that is delivered to the terminal. Various command signals or power input from the cradle may be operated as signals for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. The controller 180 may include a multimedia module 181 for playing multimedia.

In addition, the controller 180 determines the multi-touch operation based on the multi-touch input signal transmitted from the touch sensor as the multi-touch operation is performed in the display unit 151 using the touch screen, and moves associated with each multi-touch operation. And a multi-touch control module 182 for controlling the terminal function. The multi-touch control module 182 may generate a plurality of touch coordinates in response to the multi-touch operation, and determine the time duration of the touch operation.

The multimedia module 181 and the multi-touch control module 182 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Various embodiments described herein may be implemented in a recording medium readable by a computer or similar device using, for example, software, hardware or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. The described embodiments may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code may be stored in the memory 160 and executed by the controller 180.

2 is a front perspective view of an example of a mobile terminal or a mobile terminal according to the present invention;

The disclosed portable terminal 100 has a terminal body in the form of a bar. However, the present invention is not limited thereto and may be applied to various structures such as a slide type, a folder type, a swing type, a swivel type, and two or more bodies are coupled to be relatively movable.

The body includes a casing (casing, housing, cover, etc.) that forms an exterior. In this embodiment, the case may be divided into a front case 101 and a rear case 102. Various electronic components are built in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be further disposed between the front case 101 and the rear case 102.

The cases may be formed by injecting synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the audio output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, and the interface 170 may be disposed in the terminal body, mainly the front case 101. have.

The display unit 151 occupies most of the main surface of the front case 101. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on side surfaces of the front case 101 and the rear case 102.

The user input unit 130 is manipulated to receive a command for controlling the operation of the portable terminal 100 and may include a plurality of operation units 131 and 132. The manipulation units 131 and 132 may also be collectively referred to as manipulating portions, and may be employed in any manner as long as the user operates the tactile manner with a tactile feeling.

The content input by the first or second manipulation units 131 and 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 To the touch recognition mode of the touch screen.

In recent years, as the user input unit of the terminal is diversified, the use of a mobile terminal having a touch screen on which the output unit can be used as an input unit is rapidly increasing. The touch screen recognizes a touch action of a 'pointer' such as a user's finger or a pen and views it as a user input signal.

Hereinafter, a mobile terminal having a function of controlling a mobile terminal operation by distinguishing a single touch operation and a multi-touch operation from a mobile terminal having a touch screen according to an embodiment of the present invention will be described. In the following embodiments, a touch input by a user's finger is described for clarity of description, but includes a touch operation by a pointer other than the finger.

A mobile terminal performing an operation of adjusting a scroll speed by using a multi-touch operation according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4.

3 is a front perspective view illustrating an operation example in which a scroll operation is performed in a mobile terminal according to an embodiment of the present invention. Specifically, FIG. 3 illustrates an example in which the scroll operation is performed in a mobile terminal having a touch screen. will be.

As illustrated in FIG. 3, an application for listing a series of lists such as an address book, a music file list, a photo file list, a phone call history list, and the like may be executed in a predetermined region of the display unit 151 according to a user selection. The user can perform a single-directional scrolling operation on the list with one finger to retrieve the desired specific list from the displayed list.

According to an embodiment of the present invention, when the multi-touch control module 182 transmits a signal corresponding to the scrolling operation by one touch pointer on the display unit from the touch sensor, the multi-touch control module 182 may perform the scrolling operation according to a predetermined speed. To control. In general, although the scroll speed is changed according to the speed of the pointer movement by the user, in the following embodiment of the present invention, the speed of dragging a predetermined distance by a predetermined distance from the point where the user's pointer is recognized on the touch screen is defined as the scroll speed. . In addition, a constant scroll speed according to a scroll operation performed within a predetermined range on the touch screen by one pointer is referred to as a 'reference scroll speed'.

4 is a front perspective view illustrating another operation example in which a scroll operation is performed in a mobile terminal according to an embodiment of the present invention. Specifically, FIG. 4 illustrates another example in which a scroll operation is performed in a mobile terminal having a touch screen. will be.

As shown in FIG. 4, in accordance with an embodiment of the present invention, a user may perform a scroll operation using two fingers on a touch screen in which an arbitrary list is listed. That is, when two points are simultaneously touched on one touch screen, and the scroll operation is simultaneously performed in the same direction at each touched point, the touch screen recognizes that the touch operation is performed at two different positions at the same time. In this case, the multi-touch control module 182 determines whether the user's motion is a scroll motion in which a drag motion within a predetermined range is performed on the touch screen according to the multi-touch based on the user input signal transmitted from the touch sensor. When it is determined that the scrolling operation is performed by the multi-touch, the control is performed such that the scrolling is performed at a scrolling speed set at a speed higher than the 'reference scrolling speed'.

At this time, the scroll speed according to an embodiment of the present invention may be set to be proportional to the number of multi-touched pointers. For example, as shown in FIG. 4, when the user scrolls with two fingers, the multi-touch control module 182 may control the user's scrolling operation to be executed at twice the speed of the 'reference scrolling speed'. . As another example, when the user performs a scroll operation using three fingers, the user may control the scroll operation to be performed three times faster than the 'reference scroll speed'.

Meanwhile, the scroll speed may be set to be implemented differently according to the number of multi-touched pointers, but may be set to be non-linearly proportional to the number of multi-touch pointers.

Alternatively, when two or more multi-touch scroll operations are recognized by dividing one touch pointer and two or more multi-touch pointers, they may be set to be executed at a faster scroll speed than the 'reference scroll speed'.

In contrast to the above embodiment, the multi-touch control module 182 may be implemented to reduce or adjust the scrolling speed during the scrolling operation according to the multi-touch operation or to adjust the scrolling speed according to the number of multi-touch pointers.

As such, controlling an operation mode of a corresponding function by dividing one touch pointer and a multi-touch pointer when controlling a function set in the mobile terminal may be applied to an aspect ratio adjustment or a screen brightness adjustment of the display unit.

5 is a flowchart illustrating an example of a method of controlling a display aspect ratio according to a multi-touch operation in a mobile terminal according to another embodiment of the present invention. Here, it is assumed that the screen magnification adjustment function is activated in the multi-touch control module.

According to another exemplary embodiment of the present disclosure, the multi-touch control module 182 may control to enlarge or reduce the size of the screen displayed on the display unit 151 according to a user's touch operation. In addition, the control unit may control the enlargement or reduction ratio of the display screen to be proportional to the duration of the user's touch operation.

Referring to FIG. 5, in a mobile terminal having a touch screen, a touch sensor recognizes a touch action generated by a user at one or more points on the touch screen, and multi-touch control module 182 to recognize a touch input signal corresponding to the touch action. (S10). The multi-touch control module 182 determines whether the transmitted touch input signal is a touch input signal generated from one touch pointer or a touch input signal generated simultaneously from two or more touch pointers (S11). If it is determined that the user's touch action is a touch action on one pointer, the multi-touch control module 182 determines to enlarge the size of the specific area displayed on the display unit as set (S12).

As such, after the user determines the mode for the screen size on the screen of the display unit, the multi-touch control module 182 determines the duration of the user's touch operation (S14), and the screen size is proportional to the duration. May be controlled to enlarge (S15). For example, in the case where the predetermined reference touch input time is 1 second, if the user keeps a touch for 3 seconds with one finger on the touch screen of the mobile terminal according to an embodiment of the present invention, the multi- The touch control module 182 may determine that the touch duration is 3 seconds. Accordingly, the screen size may be controlled to be enlarged by three times the screen that was originally displayed in proportion to the touch duration of 3 seconds in the mode in which the screen size is enlarged and adjusted according to the touch operation of the user. In this case, the multi-touch control module 182 may adjust the screen size based on the coordinate to which the touch input signal is applied. Alternatively, as illustrated in FIG. 6, screen size adjustment may be performed centering on an area of a point where touch coordinates are generated in one screen on which a plurality of image data and texts are displayed together.

However, in the above embodiment, the linear ratio adjustment between the touch duration and the screen size is merely an example for describing the present invention, and may be preset to be nonlinearly proportional to the touch duration. In this case, the multi-touch control module 182 may control the screen size to be enlarged according to a preset ratio around the coordinates at which the touch signal is input.

When the multi-touch control module 182 determines that the touch input signal transmitted in the step S10 is generated by the multi-touch operation, the multi-touch control module 182 may control to switch to the reduction control mode for the size ratio of the screen being touched. (S13). After the screen size reduction control mode is determined, the touch duration may be determined as described above in steps S14 and S15, and the reduction ratio may be adjusted based on the touch duration.

Meanwhile, according to an embodiment of the present invention, the operation of enlarging or reducing the screen size according to the number of touch pointers is set to reduce the screen size when inputting with one touch pointer, unlike in FIG. 5. When input by the touch pointer, the screen size may be set to be enlarged.

As described above, the resizing of the screen ends when the user's finger, which is in contact with the touch screen, is separated from the touch screen.

Although FIG. 5 illustrates an example of a process of enlarging or reducing specific image data according to a user touch input signal, another finger in the process of enlarging and adjusting the screen size while the user is touching one finger. When the multi-touch is performed by touching, the screen size may be reduced according to a preset reduction ratio.

Below. An operation example of a mobile terminal according to another embodiment of the present invention will be described with reference to FIGS. 6 and 7 based on the above-described embodiment in FIG. 5.

FIG. 6 is a front perspective view illustrating an example of an operation of adjusting a screen size according to a multi-touch input in a mobile terminal according to another embodiment of the present invention.

Referring to FIG. 6, when a user wants to enlarge a specific area 200 of a screen being displayed on the front of the display unit 151, the user touches the corresponding area 200 with one finger. As a result, the screen size may be enlarged according to a preset ratio. In this case, the enlargement ratio of the screen size may be adjusted according to the touch duration of the user. For example, when the screen magnification ratio is set to increase linearly according to the touch duration as in the above-described embodiment, the user zooms in on a specific image data three times in the screen shown on the left side of FIG. 6. ), Touch input can be continued for 3 seconds. That is, the multi-touch control module 182 may generate image data corresponding to the adjusted screen enlargement ratio based on the number of touch pointers when performing the touch operation, and determine the enlargement ratio in consideration of the touch duration. The generated image data is transmitted to the display unit 151 and displayed.

FIG. 7 is a front perspective view illustrating another operation example of adjusting a screen size according to a multi-touch input in a mobile terminal according to another embodiment of the present invention.

As illustrated in FIG. 7, the user may adjust the screen size by zooming out by performing a multi-touch on the specific image data 200 displayed in the mobile terminal according to an exemplary embodiment of the present invention. As the multi-touch operation of the user is performed, the multi-touch control module 182 may reduce the screen size or the size of the multi-touch image data based on the touched coordinates. As in the above-described example, the reduction ratio may be adjusted in proportion to the touch duration of the user.

Accordingly, the user can adjust the screen size more conveniently by adjusting the size of the desired image file to maintain the touch operation and ending the touch operation when the desired image size ratio is reached.

Next, an operation example of adjusting the screen size according to the number of touch pointers when performing a multi-touch operation in a mobile terminal according to another embodiment of the present invention will be described.

FIG. 8 is a front perspective view illustrating another operation example of adjusting a screen size according to a multi-touch input in a mobile terminal according to another embodiment of the present invention. Specifically, FIG. 8 is a screen size according to the number of touch pointers during multi-touch. The example which determines a ratio is shown.

For example, the user may select an enlargement / reduction mode for the screen size through a button mounted on the mobile terminal or a virtual key button displayed in a certain area on the touch screen. As shown in FIG. 8, in a state in which the screen size is enlarged and adjusted according to a user input signal, the user performs a touch operation to enlarge the size of a specific image being displayed in a predetermined area on the display unit. In this case, when the size of the screen is enlarged (or zoon-in) when a single finger is touched, the reference magnification ratio is referred to as the reference magnification ratio. It can be set to increase the magnification in proportion to the number. Therefore, as shown in the example shown in FIG. 8, when one touch is performed with two fingers, the image file may be adjusted to be twice as large as when one touch is performed with one finger. As another example, when touching one time with three fingers, the image file may be adjusted to be three times larger than when touching one time with one finger.

9 is a front perspective view for explaining another operation example of performing a screen size adjustment according to a multi-touch input in a mobile terminal according to another embodiment of the present invention.

As illustrated in FIG. 9, in a mobile terminal according to an embodiment of the present invention, a reduction ratio may be adjusted in proportion to the number of multi-touch pointers in a state where the screen size adjustment mode is set to a reduction mode. For example, when the ratio of zooming out (or zooming out) a specific finger with one finger is referred to as the 'reference reduction ratio', the reduction ratio is set to increase in proportion to the number of touch pointers during multi-touch. Can be. 9 are adjusted to be two times smaller than the 'reference reduction ratio' when touching with two fingers as described above in FIG. 8, and three times greater than the 'reference reduction ratio' when touching with three fingers. You can adjust it to shrink further.

8 and 9 are exemplary embodiments for explaining the present invention. Unlike the above-described example, the screen enlargement / reduction ratio according to the number of multi-touch pointers may be set to increase non-linearly.

The change of the operation mode of the mobile terminal using the touch input generated from one touch pointer and the multi-touch may be applied to the adjustment of the screen brightness of the display unit.

According to another embodiment of the present invention, the touch input generated from one touch pointer performed on the touch screen and the multi touch input may be distinguished and adjusted to increase or decrease the brightness of the display screen. In addition, it is possible to derive the time duration of the touch operation, and adjust the brightness adjustment level based on the derived touch duration.

According to another embodiment of the present invention, when the user intends to adjust the screen brightness of the display unit, when the user touches an arbitrary area on the touch screen with one touch pointer while the screen brightness adjustment function is activated, the multi-touch control module ( 182 may be adjusted to increase screen brightness by a predetermined screen level. In addition, the multi-touch control module 182 may adjust the screen brightness degree based on the derived touch duration. For example, when the user touches for 5 seconds, the screen brightness level may be controlled to increase by 5 levels from the brightness level of the current display unit screen.

On the other hand, when the multi-touch operation is performed, the multi-touch control module 182 may control to reduce the screen brightness, and similarly adjust the degree of reduction of the brightness level according to the touch duration.

In addition, unlike the above-described embodiment, the control of increasing or decreasing the brightness of the screen according to the multi-touch operation may be set to be implemented in reverse.

As described above, the above-described embodiments of the present invention can be implemented as code that can be read by a processor in a medium in which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet). Include.

A mobile terminal having a touch screen as described above is not limited to the configuration and method of the embodiments described above, the embodiments are all or part of each of the embodiments is optional so that various modifications can be made It may be configured in combination.

Claims (5)

touch screen;
And a controller configured to distinguish whether a scroll operation performed at the front of the touch screen is a multi-touch operation of simultaneously touching two or more points, and to adjust the scroll speed based on the scroll operation information. Mobile terminal. The method of claim 1.
The scroll speed is determined based on the time it takes for the pointer to be dragged for a predetermined time within a predetermined range on the touch screen. The method of claim 1,
The controller is configured to adjust the scroll speed according to a preset ratio based on the scroll speed when the scroll operation is performed by one touch pointer when the scroll operation is a multi-touch operation. touch screen;
Distinguish whether the touch operation performed on an arbitrary region of the touch screen is a multi-touch operation of simultaneously touching two or more points, and the size of the screen displayed on a predetermined region of the display unit according to the touch operation information. And a control unit that adjusts to enlarge or reduce the mobile terminal. The method of claim 4, wherein
The controller derives a time period during which the touch operation continues, and adjusts an enlargement ratio or a reduction ratio of the screen based on the touch duration.

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