KR20100051895A - Mobile terminal and method for providing instant message service in mobile terminal - Google Patents

Abstract

PURPOSE: A mobile terminal and a method for providing instant message service in a mobile terminal are provided to store conversation content in an instant message mode to provide the stored conversation contents to a new participant. CONSTITUTION: A mobile terminal participates an instant message mode(S202). The mobile terminal request a transmission of stores conversation contents of the other terminal while participating in the instant message mode(S203). The mobile terminal receives the stores conversation contents of the other terminal(S204). The mobile terminal displays instant message mode participant information of the time information or predetermined timing about the conversation contents(S205).

Description

MOBILE TERMINAL AND METHOD FOR PROVIDING INSTANT MESSAGE SERVICE IN MOBILE TERMINAL}

The present invention relates to a mobile terminal capable of providing an instant message service and an instant message service providing method of the mobile terminal.

Terminal can move It may be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal depending on 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.

As the terminal functions are diversified, for example, such a terminal is a multimedia player having a complex function such as taking a picture or a video, playing a music or video file, playing a game, or receiving a broadcast. Is being implemented.

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.

As one of various functions provided by a mobile terminal, there is a so-called instant message service in which a mobile terminal accesses a messenger server and transmits and receives a message with another terminal in real time. Various methods for providing an instant message service in the mobile terminal can be considered.

The present invention provides a mobile terminal having an instant message function, when a new participant joins an activated instant message mode, an effective communication function between an instant message mode participant and a new participant.

According to an aspect of the present invention, there is provided a method for providing an instant message service of a mobile terminal, the method including: storing conversation contents at regular intervals during activation of an instant message mode, and requesting transmission of the stored conversation contents; Receiving a signal, and transmitting the stored conversation content in response to the request.

In accordance with another aspect of the present invention, there is provided a method for providing an instant message service of a mobile terminal, the method including: participating in an instant message mode, and transmitting conversation contents stored in another terminal that is already participating in the instant message mode; And transmitting a signal for requesting to display a conversation received from the other terminal.

A mobile terminal according to another embodiment of the present invention for realizing the above object is configured to receive a memory for storing conversation contents, a signal requesting transmission of the stored conversation contents, and to transmit the stored conversation contents. The wireless communication unit includes a control unit configured to store the conversation contents at regular intervals during activation of the instant message mode, and to transmit the stored conversation contents according to a signal for requesting transmission of the stored conversation contents.

The mobile terminal according to another embodiment of the present invention for realizing the above object is a request for transmission of a signal requesting to participate in an instant message mode and conversation contents stored in another terminal that is already participating in the instant message mode. A wireless communication unit which transmits a signal and receives a conversation content from the other terminal, a display unit displaying the conversation content received from the other terminal, activates the instant message mode by requesting to participate in the instant message mode, And a control unit for displaying the contents of the conversation.

The mobile terminal according to at least one embodiment of the present invention configured as described above stores the conversation contents during instant message mode activation and provides them to the new participants, so that the new participants can effectively grasp the previous conversation contents.

In addition, the present invention is because the stored chat content is transmitted to the new participants without the previous chat participants need to re-enter the conversation content to send to the new participants, the previous chat participants can effectively provide information to the new participants.

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.

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 photographing 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 may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. 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 sight, hearing, or tactile sense, and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154. Can be.

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. By 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.

There may be two or more display units 151 according to the implementation form of the mobile terminal 100. 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.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is surrounded by 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 the change of the 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, the 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 where the proximity touch is performed by the pointer on the touch screen refers to 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. The haptic module 154 may be provided with two or more according to the configuration aspect of the mobile terminal 100.

The memory 160 may store a program for the operation of the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory 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, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input / output (I / O) ports, The video input / output (I / O) port, the 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. Therefore, the identification device may be connected to the terminal 100 through a 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. The multimedia module 181 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, 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 may be implemented in software applications written in a suitable programming language. The software code may be stored in the memory 160 and executed by the controller 180.

2A is a front perspective view of an example of a mobile terminal or a portable 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.

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.

FIG. 2B is a rear perspective view of the portable terminal shown in FIG. 2A.

Referring to FIG. 2B, a camera 121 ′ may be additionally mounted on the rear of the terminal body, that is, the rear case 102. The camera 121 ′ has a photographing direction substantially opposite to that of the camera 121 (see FIG. 2A), and may be a camera having different pixels from the camera 121.

For example, the camera 121 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call, and the camera 121 'photographs a general subject and does not transmit it immediately. It is desirable to have a high pixel because there are many. The cameras 121 and 121 'may be installed in the terminal body in a rotatable or pop-up manner.

A flash 123 and a mirror 124 are further disposed adjacent to the camera 121 '. The flash 123 shines light toward the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to see his / her own face or the like when photographing (self-photographing) the user using the camera 121 '.

The sound output unit 152 'may be further disposed on the rear surface of the terminal body. The sound output unit 152 ′ may implement a stereo function together with the sound output unit 152 (see FIG. 2A), and may be used to implement a speakerphone mode during a call.

In addition to the antenna for a call or the like, a broadcast signal reception antenna 124 may be additionally disposed on the side of the terminal body. The antenna 124 constituting a part of the broadcast receiving module 111 (see FIG. 1) may be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the portable terminal 100 is mounted on the terminal body. The power supply unit 190 may be embedded in the terminal body or may be directly detachable from the outside of the terminal body.

The rear case 102 may be further equipped with a touch pad 135 for sensing a touch. Like the display unit 151, the touch pad 135 may also be configured to have a light transmission type. In this case, if the display unit 151 is configured to output visual information from both sides, the visual information may be recognized through the touch pad 135. The information output on both surfaces may be controlled by the touch pad 135. Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may also be disposed on the rear case 102.

The touch pad 135 operates in association with the display unit 151 of the front case 101. The touch pad 135 may be disposed in parallel to the rear of the display unit 151. The touch pad 135 may have the same or smaller size as the display unit 151.

Hereinafter, the operation of the display unit 151 and the touch pad 135 will be described with reference to FIGS. 3A and 3B.

3A and 3B are front views of a portable terminal for explaining an operation state of the portable terminal according to the present invention.

Various types of time information can be displayed on the display unit 151. [ These pieces of information can be displayed in the form of letters, numbers, symbols, graphics, or icons.

In order to input such information, at least one of the letters, numbers, symbols, graphics, or icons may be displayed in a predetermined arrangement so as to be implemented in the form of a keypad. Such a keypad may be called a so-called " soft key ".

3A illustrates receiving a touch applied to a softkey through the front of the terminal body.

The display unit 151 may operate in an entire area or may be operated in a divided manner. In the latter case, the plurality of areas can be configured to operate in association with each other.

For example, an output window 151a and an input window 151b are displayed on the upper and lower portions of the display unit 151, respectively. In the input window 151b, a soft key 151c displaying a number for inputting a telephone number or the like is output. When the softkey 151c is touched, a number or the like corresponding to the touched softkey is displayed on the output window 151a. When the first manipulation unit 131 is operated, a call connection to the telephone number displayed on the output window 151a is attempted.

3B illustrates receiving a touch applied to a softkey through the rear of the terminal body. If FIG. 3A is a portrait in which the terminal body is arranged vertically, FIG. 3B illustrates a landscape in which the terminal body is arranged horizontally. The display unit 151 may be configured to convert the output screen according to the arrangement direction of the terminal body.

3B shows that the text input mode is activated in the mobile terminal. The display unit 151 displays the output window 135a and the input window 135b. In the input window 135b, a plurality of softkeys 135c on which at least one of letters, symbols, and numbers are displayed may be arranged. The softkeys 135c may be arranged in the form of a QWERTY key.

When the soft keys 135c are touched through the touch pad 135, letters, numbers, symbols, etc. corresponding to the touched soft keys are displayed on the output window 135a. As described above, the touch input through the touch pad 135 has an advantage of preventing the softkey 135c from being blocked by the finger when touched, as compared with the touch input through the display unit 151. When the display unit 151 and the touch pad 135 are transparent, the fingers located at the rear of the terminal body can be visually checked, and thus more accurate touch input is possible.

In addition to the input methods disclosed in the above embodiments, the display unit 151 or the touch pad 135 may be configured to receive a touch input by scrolling. By scrolling the display unit 151 or the touch pad 135, the user may move an object displayed on the display unit 151, for example, a cursor or a pointer located at an icon. Further, when the finger is moved on the display portion 151 or the touch pad 135, the path along which the finger moves may be visually displayed on the display portion 151. [ This may be useful for editing an image displayed on the display unit 151.

One function of the terminal may be executed in response to a case where the display unit 151 (touch screen) and the touch pad 135 are touched together within a predetermined time range. In the case of being touched together, there may be a case where the user clamps the terminal body using the thumb and index finger. For example, the function may include activation or deactivation of the display unit 151 or the touch pad 135.

The proximity sensor 141 described with reference to FIG. 1 will be described in more detail with reference to FIG. 4.

4 is a conceptual diagram illustrating a proximity depth of a proximity sensor.

As shown in FIG. 4, when a pointer such as a user's finger or pen approaches the touch screen, the proximity sensor 141 disposed in or near the touch screen detects this and outputs a proximity signal.

The proximity sensor 141 may be configured to output different proximity signals according to a distance between the proximity touched pointer and the touch screen (hereinafter, referred to as “proximity depth”).

In FIG. 4, for example, a cross section of a touch screen on which three proximity sensors capable of sensing three proximity depths is disposed is illustrated. Of course, proximity sensors that detect less than three or more than four proximity depths are also possible.

Specifically, when the pointer is completely in contact with the touch screen (d ₀ ), it is recognized as a touch touch. When the pointer is positioned below the distance d ₁ on the touch screen, the pointer is recognized as a proximity touch of a first proximity depth. When the pointer is spaced apart from the distance d ₁ or more and less than d ₂ on the touch screen, the pointer is recognized as a proximity touch of a second proximity depth. When the pointer is spaced apart from the distance d ₂ or more and less than d ₃ on the touch screen, the pointer is recognized as a proximity touch of a third proximity depth. When the pointer is positioned at a distance of more than d ₃ from the touch screen, the proximity touch is recognized as released.

Accordingly, the controller 180 may recognize the proximity touch as various input signals according to the proximity depth and the proximity position of the pointer, and perform various operation control according to the various input signals.

FIG. 5 is a conceptual diagram illustrating a control method for a touch operation when a pair of display units 155 and 156 overlap.

The terminal disclosed in this drawing is a folder-type terminal in which a folder unit is foldable with respect to a main body. The first display unit 155 mounted on the folder unit may be a light transmissive type or a transparent type such as a TOLED, but the second display unit 156 mounted on the main body may have a form in which light does not penetrate like an LCD. The first and second display units 155 and 156 may be configured as touch screens capable of touch input, respectively.

For example, when a touch (contact touch or proximity-touch) with respect to the first display unit or the TOLED 155 is detected, the controller 180 may be configured according to the type of touch and the touch time. At least one image from the list of images displayed on the TOLED 155 may be selected or run.

Hereinafter, touch, long touch, long touch, and drag (drag) are applied to a method in which information displayed on another display unit or LCD 156 is controlled when a touch is applied to the TOLED 155 exposed to the outside in an overlapped form. The description is based on the input method separated by).

In the overlapped state (mobile terminal is closed), the TOLED 155 is disposed to overlap the lower side of the LCD 156. In this state, when a touch different from a touch for controlling the image displayed on the TOLED 155 is detected, for example, a long touch (for example, a touch lasting more than 2 seconds to 3 seconds), the controller 180 ) Causes at least one image of the image list displayed on the LCD 156 to be selected according to the sensed touch input. The result of the execution of the selected image is displayed on the TOLED 155.

The long touch can also be used to selectively move a desired one of the objects displayed on the LCD 156 to the TOLED 155 (without its execution operation). That is, the user may select one area of the TOLED 155 corresponding to the specific object of the LCD 156. In the long touch, the controller 180 moves the object to the TOLED 155 for display. Meanwhile, the object displayed on the TOLED 155 may also be transferred to the LCD 156 according to a predetermined touch input, for example, flicking, swirling, or the like, on the TOLED 155. In this figure, the menu No. 2 displayed on the LCD 156 is moved to the TOLED 155 and illustrated.

If another input, for example, a drag, is additionally detected along with the long touch, the controller 180 is a function related to the image selected by the long touch, for example, a preview screen for the image is displayed on the TOLED 155. Can be displayed on. In this figure, the case where the preview (male photograph) with respect to the 2nd menu (image file) is performed is illustrated.

When the preview screen is output and the drag is made to the TOLED 155 to another image while maintaining the long touch, the controller 180 controls the selection cursor (or selection bar) of the LCD 156. The selected cursor is displayed on the preview screen (woman photo). After that, when the touch (long touch and drag) is finished, the controller 180 displays the first image selected by the long touch.

The touch operation (long touch and drag) may be performed when a slide (movement of the proximity touch corresponding to the drag) is detected together with the long proximity touch (the proximity touch lasting at least 2 seconds to 3 seconds) for the TOLED 155. The same applies to.

If a touch operation other than those mentioned above is detected, the controller 180 may operate in the same manner as a general touch control method.

The control method for the touch operation in the overlapped form may be applied to a terminal having a single display. In addition, the present invention can be applied to a terminal different from a folder type having a dual display.

As shown in FIG. 1, the controller 180 may cause the memory 160 to store conversation contents at regular intervals during the instant message mode activation. When the control unit 180 receives a signal for requesting transmission of the stored conversation contents through the wireless communication unit 110, the controller 180 causes the wireless communication unit 110 to display the stored conversation contents in another terminal or an instant message. You can have it sent to the server.

An instant message service displays a message received when the terminal is connected to a messenger server on the screen of the terminal in use, and when a user who receives it composes and sends a message, the message is immediately displayed on the screen of the other terminal. It means a service that can communicate in real time like a call. In addition, a program used by the mobile terminal 100 to use such an instant message service is called an instant messenger program.

The instant message mode means that the mobile terminal 100 exchanges messages with at least one terminal using an instant messenger program through an instant message service.

The controller 180 may transmit only the conversation contents of the participant who has accepted the signal for requesting transmission of the conversation contents received through the wireless communication unit 110 among the participants in the instant message mode. Conversation content of the participant who accepts this may mean only a message sent by the participant who has accepted this.

The controller 180 may perform a control operation of controlling the mobile terminal 100 according to a control signal received from the terminal that has received the conversation contents through the wireless communication unit 110. The control operation may include at least one of deactivating an instant message mode for a predetermined time, playing multimedia content, and locking a message transmission or reception of each terminal in the instant message mode.

The controller 180 requests the participation in the activated instant message mode to activate the instant message mode, and causes the display unit 151 to display the conversation contents received from other terminals through the wireless communication unit 110. Can be.

When the user selects through the icon displayed on the display unit 151 to display the received conversation contents, the controller 180 may cause the display unit 151 to display the received conversation contents.

The controller 180 may cause the display unit 151 to display the icon without displaying the previous conversation content unless the user selects to display the previous conversation content.

The controller 180 selectively applies a scroll function to the conversation contents displayed on the screen according to a user's selection, or when a plurality of areas for displaying the contents of the conversation are set on the screen of the display unit 151, The scroll function may be selectively applied to the conversation contents displayed in the area selected by the user.

As shown in FIG. 1, the memory 160 stores conversation contents at regular intervals during the instant message mode activation. The memory 160 may store the conversation contents together with date and time information of the conversation contents.

The memory 160 may store the conversation contents to classify the conversation contents for each participant of the instant message mode. For example, the memory 160 transmits a conversation between A, B, and C when three persons (each referred to as A, B, and C) participate in the instant message mode and have a conversation. The conversation contents, the conversation contents transmitted by B, and the conversation contents transmitted by C may be classified and stored to be searchable.

As illustrated in FIG. 1, the wireless communication unit 110 may receive a signal for requesting transmission of the stored conversation contents and transmit the conversation contents stored in the memory 160.

When at least one of the terminals participating in the instant message mode terminates the instant message mode, the wireless communication unit 110 may receive information related to the termination reason.

The termination reason may include termination due to low battery of one of the terminals, termination due to one of the terminals entering the voice call mode, termination due to a device failure of one of the terminals, and selection of a user of the one of the terminals. Followed by termination.

The wireless communication unit 110 may transmit a message for instructing to participate in the activated instant message mode. The guide message may be transmitted to a terminal that has participated in an activated instant message mode and has terminated the instant message mode, or a terminal to which participants of the activated instant message mode are invited to a new participant of the instant message mode. have.

The wireless communication unit 110 receives a signal from the terminal receiving the stored conversation contents, a signal controlling the mobile terminal 100 or a signal indicating that the user of the terminal receiving the stored conversation contents is reading the received conversation contents. Can be received.

The wireless communication unit 110 transmits a signal for requesting to participate in the instant message mode and a request for transmission of conversation contents stored in another terminal that is already participating in the instant message mode, and receives the conversation contents from the other terminal. Can be.

The wireless communication unit 110 may receive a message for instructing to participate in the activated instant message mode.

As shown in FIG. 1, when at least one of the terminals participating in the instant message mode exits the instant message mode, the display unit 151 may display information related to the termination reason.

The display unit 151 may display that the user of the terminal receiving the stored conversation is reading the transmitted conversation.

The display unit 151 may display the conversation contents transmitted by the other terminal at the request of the mobile terminal 100.

The display unit 151 may display time information associated with the conversation contents or participant information in an instant message mode at a certain point in time.

The display unit 151 may selectively display the received conversation contents according to a user's selection. The display unit 151 may selectively display an icon or a received conversation content to display the received conversation content on the screen. That is, if the user selects to display the received conversation, the display unit 151 displays the received conversation on the screen, and if the user selects not to display the received conversation, the display unit 151 May not display the received conversation content on the screen. When the display unit 151 does not display the received conversation contents on the screen, an icon for displaying the received conversation contents on the screen may be displayed to display the received conversation contents only with a simple operation of the user. Can be.

The display unit 151 may distinguish and display the received conversation contents and the conversation contents received after joining the instant message mode.

The display unit 151 may set a plurality of areas on the screen to display the conversation contents in each area. When the scroll function is selectively applied to the plurality of areas by the selection of the controller or the user, the display unit 151 may display the conversation contents displayed in each area so as not to scroll or scroll.

6 is a flowchart illustrating a method for providing an instant message service in a mobile terminal according to an embodiment of the present invention.

When the mobile terminal 100 activates the instant message mode through an instant messenger program (S101), the controller 180 may allow the memory 160 to store the conversation contents at a certain time interval in the money deposit (S102). . If it is determined whether at least one of the terminals participating in the instant message mode has terminated the instant message mode (S103), when at least one of the terminals participating in the instant message mode terminates the instant message mode, Information related to the end reason can be received (S104). When the information related to the termination reason is received, the information related to the termination reason may be displayed (S105).

The controller 180 may transmit a message for instructing to participate in the previously activated instant message mode (which may mean the instant message mode in which the mobile terminal is participating) to another terminal (S106).

The guide message may be transmitted to any one of the terminals participating in the instant message mode, or may be transmitted to a terminal not participating in the instant message mode.

The mobile terminal 100 may receive a signal for requesting transmission of the stored conversation contents through the wireless communication unit 110 (S107). The signal for requesting the transmission of the stored conversation contents is received from a terminal newly participating in an activated instant message mode, received from a terminal rejoining an activated instant message mode, or not participating in an activated instant message mode. It can be received from the terminal.

The mobile terminal 100 may transmit the stored conversation contents using the wireless communication unit 110 according to the request (S107). The stored conversation contents may be transmitted to at least one of the terminals participating in the instant message mode or at least one of the terminals not participating in the instant message mode.

The stored conversation may be transmitted in the form of a short message or a multimedia message. When the stored conversation contents are transmitted in the form of a multimedia message, multimedia contents related to the contents of the conversation may be transmitted together with the contents of the conversation.

When the user of the other terminal receiving the stored conversation is reading the transmitted conversation, the mobile terminal 100 signals that the user of the other terminal is reading the transmitted conversation through the wireless communication unit 110. It may be received (S109). The mobile terminal 100 may display that the user of the other terminal is reading the conversation contents transmitted through the display unit 151 (S110). The mobile terminal 100 may perform a control operation according to the signal received from the terminal that received the conversation content (S111).

7 is a flowchart illustrating a method for providing an instant message service in a mobile terminal according to an embodiment of the present invention.

The mobile terminal 100 may receive a message instructing to participate in the activated instant message mode (S201). The mobile terminal 100 may participate in a pre-activated instant message mode (S202). After the mobile terminal 100 participates in the instant message mode, the mobile terminal 100 may request transmission of conversation contents stored in another terminal that is already participating in the instant message mode (S203). After the mobile terminal receives the conversation contents from the other terminal, the mobile terminal may display the conversation contents received from the other terminal (S204). The mobile terminal may further display time information related to the conversation or instant message mode participant information at a certain point in time (S204).

8 is a diagram illustrating an instant message mode performed in a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 8, when a plurality of terminals A, B, and C activate the instant message mode to transmit and receive a message, when either terminal C terminates the instant message mode, the mobile terminal The terminal 100 may receive information related to the termination reason from the terminal C or the instant messaging server (not shown) that has terminated the instant message mode, and may display it on one area R1 on the screen of the display unit 151. . In one area R1 on the screen, information such as an end reason or an end time of the terminal C which terminated the instant message mode may be further displayed.

The termination reason may include termination due to low battery of one of the terminals, termination due to one of the terminals entering the voice call mode, termination due to a device failure of one of the terminals, and selection of a user of the one of the terminals. Followed by termination.

9A, 9B, 9C, and 9D are diagrams illustrating a conversation content received after participating in an instant message mode in a mobile terminal according to an embodiment of the present invention.

When the mobile terminal 100 receives the conversation contents stored in another terminal by participating in the instant message mode, the mobile terminal 100 may display the conversation contents received through the display unit 151 of the mobile terminal 100.

The mobile terminal 100 may display the received conversation contents and the conversation contents received after the mobile terminal 100 participates in the newly activated instant message mode.

As shown in FIG. 9A, an area R2 in which conversation contents received on the screen are displayed may be displayed separately from other conversation contents in a manner in which colors thereof are displayed differently.

Alternatively, as illustrated in FIG. 9B, the area R2 in which the conversation contents received on the screen are displayed may be displayed in a separate block and displayed separately from other conversation contents.

Alternatively, as illustrated in FIG. 9C, a message indicating that the contents are conversation contents received from another terminal may be displayed separately from other conversation contents by displaying a message indicating that the contents are conversation contents received from another terminal.

Alternatively, as shown in FIG. 9D, a message related to the time at which the conversation is transmitted and received may be displayed separately from other conversations by displaying a message related to the time at which the conversation is transmitted and received.

FIG. 10 is a view illustrating a participant information of an instant message mode displayed on a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 10, when the mobile terminal 100 participates in an activated instant message mode, the mobile terminal 100 displays the participant information of the instant message mode at another time or another terminal or an instant message server (not shown). Can be received and displayed.

The predetermined time point may mean a time point when the mobile terminal 100 terminates the activated instant message mode or reenters the activated instant message mode.

FIG. 11 is a diagram for a mobile terminal according to an embodiment of the present invention receiving a signal for guiding a user from another terminal to participate in an instant message mode.

The mobile terminal 100 may receive a message for instructing the mobile terminal 100 to participate in the activated instant message mode through the wireless communication unit 110. The controller 180 of the mobile terminal 100 may guide the user to participate in the activated instant message mode according to the received guide message. In order to guide the user to participate in the pre-activated instant message mode, the controller 180 may cause the display unit 151 to display a menu asking whether to participate in the pre-activated instant message mode on the screen. When the user inputs a participation in the pre-activated instant message mode through the user input unit 130, the mobile terminal 100 performs an intermediate process for participating in the pre-activated instant message mode (instant messenger program operation, instant messenger network). It may be possible to participate in the instant message mode without logging in, including the selection of a pre-activated instant message mode.

FIG. 12 is a diagram illustrating a dialog content selectively received according to a user's selection in a mobile terminal according to an embodiment of the present invention.

As illustrated in FIG. 12, the display unit 151 may display a conversation content selectively received according to a user's selection.

The display unit 151 may display an icon for guiding the display of the received conversation content on the screen or display the received conversation content.

When the user selects to display the received conversation contents, the received conversation contents are displayed on one area R3 of the screen on the screen of the display unit 151. The screen may further display an icon I1 for hiding the received conversation.

When the user applies a touch input to the icon I1 for hiding the received conversation content, the received conversation content may not be displayed on the screen of the display unit 151. In this case, an icon I2 for displaying the received conversation content may be further displayed on the screen of the display unit 151.

The display of the received conversation content may be input using a hard key, a jog dial, or the like in addition to a touch input.

FIG. 13 is a view illustrating a scroll function selectively applied according to a user's selection in a mobile terminal according to an embodiment of the present invention.

As illustrated in FIG. 13, a plurality of regions R3 and R4 may be set on the screen of the display unit 151.

The user may input a signal for selecting at least one of the plurality of areas through the user input unit 130. The controller 180 may selectively apply a scroll function to an area selected by a user. Assume that a user selects one region R3 among the plurality of regions R3 and R4. The controller 180 may not apply the scroll function to the one area R3. An icon I3 may be displayed on the one area R3 to inform the user that the scroll function is not applied to the one area R3.

When the user applies a touch input to a location where the icon I3 is displayed, the controller 180 may apply a scroll function to the conversation contents displayed in the one area R3.

FIG. 13 illustrates a case where a plurality of areas are set on the screen. However, even when only one area is displayed on the screen, the scroll function may be controlled according to a user input.

14A and 14B are diagrams illustrating a dialog content selected by a user in a mobile terminal according to an embodiment of the present invention is always displayed on one area of a screen.

As shown in FIG. 14A, when a user applies a touch input to a region R5 of the screen on which the conversation contents are displayed, the conversation contents displayed on the one region may be always displayed on the screen of the display unit 151.

As shown in FIG. 14B, the selected conversation content is displayed on one area R6 of the screen of the display unit 151, and the scroll function is not applied only to the conversation content displayed on the one area R6. You can always have the same content displayed.

FIG. 15 is a diagram illustrating a method of transmitting a stored conversation content to another terminal in a mobile terminal according to an embodiment of the present invention.

When the controller 180 receives a signal requesting transmission of the stored conversation contents while storing the conversation contents at a predetermined interval while activating the instant message mode, the controller 180 may transmit the stored conversation contents according to the request.

As shown in FIG. 15, when transmitting the stored conversation contents, the user may select whether to accept the conversation contents transmission request. The controller 180 may transmit only the conversation contents of the user who has accepted the conversation contents transmission request.

FIG. 16 is a diagram illustrating a format for transmitting stored conversation contents in a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 16, the conversation content may be transmitted in the form of a short message or a multimedia message.

When the conversation content is transmitted in the form of a short message, the other terminal receiving the conversation content may check the conversation content without participating in the instant message mode. In addition, when the contents of the conversation are transmitted in the form of a multimedia message, the contents of the conversation may be transmitted together with the contents of the conversation.

FIG. 17 is a diagram illustrating a control operation according to a signal received from a terminal receiving the conversation content in a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 17, the wireless communication unit 110 may receive a signal for controlling the mobile terminal 100 from the terminal that receives the conversation contents.

The controller may perform a control operation of the mobile terminal 100 according to a signal received through the wireless communication unit 110. The control operation may include at least one of deactivating an instant message mode for a predetermined time, playing multimedia content, and locking a message transmission or reception of each terminal in the instant message mode.

18A and 18B are diagrams illustrating the conversation contents stored in a mobile terminal according to an embodiment of the present invention.

The memory 160 may store the conversation contents to classify the conversation contents for each participant of the instant message mode. For example, the memory 160 transmits a conversation between A, B, and C when three persons (each referred to as A, B, and C) participate in the instant message mode and have a conversation. The conversation contents, the conversation contents transmitted by B, and the conversation contents transmitted by C may be classified and stored to be searchable.

As shown in FIG. 18A, the conversation contents may be stored to be classified and searched by the participants of the conversation.

As shown in FIG. 18B, the conversation contents may be stored to be classified and searched by the conversation contents transmitted by each conversation user.

19 is a diagram illustrating the conversation contents classified in a mobile terminal according to an embodiment of the present invention.

As shown in Fig. 19, the conversation contents can be sorted and sorted in order of the talker's name, telephone number, file name, storage time, and total conversation time.

In addition, according to an embodiment of the present invention, the above-described method may 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.

The mobile terminal having the instant message service function described above is not limited to the configuration and method of the embodiments described above, but the embodiments may be all or part of each embodiment so that various modifications may be made. May be optionally combined.

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

Figure 2a is a front perspective view of a mobile terminal according to an embodiment of the present invention.

2B is a rear perspective view of a mobile terminal according to an embodiment of the present invention.

3A and 3B are front views of a portable terminal for explaining an operation state of the portable terminal according to the present invention.

4 is a conceptual diagram illustrating a proximity depth of a proximity sensor.

5 is a conceptual diagram illustrating a control method for a touch operation in a form in which a pair of display units overlap.

6 is a flowchart illustrating a method for providing an instant message service in a mobile terminal according to an embodiment of the present invention.

7 is a flowchart illustrating a method for providing an instant message service in a mobile terminal according to an embodiment of the present invention.

8 is a view showing an instant message mode performed in a mobile terminal according to one embodiment of the present invention;

9A, 9B, 9C, and 9D are views illustrating a conversation content received after participating in an instant message mode in a mobile terminal according to an embodiment of the present invention;

10 is a view showing a participant information of an instant message mode in a mobile terminal according to an embodiment of the present invention;

FIG. 11 is a view showing a mobile terminal receiving a signal for guiding to participate in an instant message mode from another terminal in accordance with one embodiment of the present invention; FIG.

12 is a view showing a dialog content selectively received according to a user's selection in a mobile terminal according to an embodiment of the present invention;

FIG. 13 is a view showing a selective application of a scroll function according to a user's selection in a mobile terminal according to an embodiment of the present invention; FIG.

14A and 14B are diagrams illustrating a dialog content selected by a user in a mobile terminal according to an embodiment of the present invention is always displayed on one area of a screen;

FIG. 15 is a diagram illustrating a method of transmitting a conversation content stored in a mobile terminal according to one embodiment of the present invention to another terminal; FIG.

FIG. 16 is a diagram illustrating a format for transmitting stored conversation contents in a mobile terminal according to one embodiment of the present invention; FIG.

FIG. 17 is a diagram illustrating a control operation according to a signal received from a terminal receiving the conversation content in a mobile terminal according to one embodiment of the present invention; FIG.

18A and 18B are views showing how the conversation is stored in a mobile terminal according to an embodiment of the present invention.

19 is a view showing a state in which a conversation is classified in a mobile terminal according to an embodiment of the present invention.

Claims (35)

Storing conversation contents at regular intervals during the instant message mode activation; Receiving a signal requesting transmission of the stored conversation; and And transmitting the stored conversation contents in response to the request. According to claim 1, If the terminal participating in the instant message mode exits the instant message mode, And receiving and displaying information related to the termination reason. According to claim 1, The transmitting step, And transmitting the stored conversation content to at least one of the terminals participating in the instant message mode. According to claim 1, The transmitting step, And transmitting the stored conversation contents to at least one of the terminals not participating in the instant message mode. 5. The method of claim 4, The transmitting step, And transmitting the stored conversation contents in a short message or a multimedia message form. 5. The method of claim 4, And transmitting a message for guiding the user to participate in an activated instant message mode. According to claim 1, The transmitting step, And transmitting only the conversation contents of the participant who has accepted the message transmission request signal. According to claim 1, Receiving a signal indicating that the conversation contents transmitted from the terminal having received the stored conversation contents are being read; And indicating that the user of the terminal that has received the conversation is reading the transmitted conversation. According to claim 1, And performing a control operation according to a signal received from the terminal receiving the conversation contents. According to claim 1, The steps to save, And storing the conversation contents to classify the conversation contents for each participant of the instant message mode. Participating in the instant message mode; Transmitting a signal for requesting transmission of conversation contents stored in another terminal that is already participating in the instant message mode; And displaying the contents of the conversation received from the other terminal. The method of claim 11, wherein And displaying the time information associated with the conversation or the participant information in an instant message mode at a certain point in time. The method of claim 11, wherein And receiving a message for instructing to participate in an activated instant message mode. The method of claim 11, wherein The displaying step, And optionally displaying the received conversation content according to a user's selection. The method of claim 11, wherein The displaying step, And displaying the received conversation contents and the received conversation contents after joining the instant message mode. The method of claim 11, wherein The displaying step, A method of providing an instant message service of a mobile terminal, which is a step of always displaying a conversation content selected by a user in one area of a screen. The method of claim 11, wherein Set up multiple areas to display the conversation on the screen, And applying a scroll function to the conversation contents displayed on at least one of the plurality of areas. The method of claim 11, wherein And optionally applying a scroll function to the conversation contents displayed on the screen according to a user's selection. A memory storing conversation contents; A wireless communication unit for receiving a signal requesting transmission of the stored conversation contents and transmitting the stored conversation contents; and And a controller configured to store the conversation contents at regular intervals during the instant message mode activation, and to transmit the stored conversation contents according to a signal requesting the transmission of the stored conversation contents. The method of claim 19, The wireless communication unit, Receive information related to the termination reason of the terminal exiting the instant message mode, And a display unit for displaying the reason for termination according to the received information. The method of claim 19, The wireless communication unit, A mobile terminal for transmitting a message for instructing to participate in an activated instant message mode. The method of claim 19, The control unit, And only a conversation of a participant who has accepted the conversation content transmission request signal. The method of claim 19, The wireless communication unit, Receive a signal for controlling the mobile terminal from the terminal receiving the conversation content, The control unit, A mobile terminal for performing a control operation according to the signal for controlling the mobile terminal. The method of claim 23, wherein The control operation, A mobile terminal comprising at least one of deactivation of an instant message mode for a predetermined time, playback of multimedia content, and locking of transmission or reception of a message in an instant message mode. The method of claim 19, The wireless communication unit, Receive a signal indicating that the conversation is transmitted from the terminal receiving the stored conversation, And an output unit for outputting that the user of the terminal receiving the conversation is reading the transmitted conversation. The method of claim 19, The memory, A mobile terminal for storing the chat content so that the chat content can be classified by each participant in the instant message mode. A wireless communication unit for transmitting a signal for requesting to participate in an instant message mode and a signal for requesting transmission of conversation contents stored in another terminal that is already participating in the instant message mode, and receiving the conversation contents from the other terminal; A display unit for displaying the contents of the conversation received from the other terminal; And And a controller for requesting to join the instant message mode to activate the instant message mode and to display the received conversation. The method of claim 27, The display unit, And a participant information of an instant message mode or time information related to the conversation contents. The method of claim 27, The wireless communication unit, A mobile terminal receiving a message for instructing to participate in a pre-activated instant message mode. The method of claim 27, The display unit, A mobile terminal for selectively displaying the received conversation content according to the user's selection. The method of claim 30, The display unit, Selectively displays an icon or guide to display the received conversation content on a screen; Further comprising a user input unit for receiving input whether or not to display the conversation content received from the user, The control unit, A mobile terminal for causing the display unit to display the previous conversation contents when the display of the conversation contents received by the user is selected through the icon. The method of claim 31, wherein The control unit, The mobile terminal, if the user does not select the display of the conversation contents received, causes the display unit to display the icon without displaying the previous conversation contents. The method of claim 27, The display unit, And displaying the received conversation contents and the conversation contents received after joining the instant message mode. The method of claim 27, The display unit, Display the conversation contents in a plurality of areas set on the screen, The apparatus may further include a user input unit configured to receive a signal for selecting at least one of the plurality of regions. The control unit, The mobile terminal selectively applies a scroll function to the conversation contents displayed in the selected area. The method of claim 27, The apparatus further includes a user input unit configured to receive a signal for selecting whether to apply a scroll function to the conversation contents displayed on the screen. The control unit, A mobile terminal for selectively applying scrolling function to conversation contents displayed on a screen according to a user's selection.

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