Abstract:
A mobile terminal including a housing having a front surface, a back surface and lateral surfaces; a display disposed on the front surface of the housing and configured to display information; a physical key button disposed on the front surface of the housing, said physical key button configured to receive an input; a communication unit configured to wirelessly communicate with an external terminal; and a control unit configured to control the external terminal to display an image of the mobile terminal on a display of the external terminal, when the communication unit is wirelessly communicating with the external terminal. Further, the control unit is further configured to control the external terminal to display the image of the mobile terminal with a same shape and size of the mobile terminal, and to include the physical key button and the information displayed on the display of the mobile terminal, and the control unit is further configured to control the external terminal to update the image of the mobile terminal displayed on the display of the external terminal with the information displayed on the display of the mobile terminal in real time, and not to update the physical key button displayed on the display of the external terminal in real time.

Description:
[0001]    The present application is a continuation application of application Ser. No. 12/545,365 filed on Aug. 21, 2009, which claims the benefit of earlier filing date and right of priority to Korean Application Nos. 10-2009-0032283, filed on Apr. 14, 2009, 10-2009-0051175, filed on Jun. 9, 2009, 10-2009-0053946, filed on Jun. 17, 2009, and 10-2009-0053945, filed on Jun. 17, 2009, the contents of which are hereby incorporated by reference herein in their entirety. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to a terminal, and more particularly, to a terminal and controlling method thereof. Although the present invention is suitable for a wide scope of applications, it is particularly suitable for controlling data communication operations between terminals 
         [0004]    2. Discussion of the Related Art 
         [0005]    A terminal is a device which may be configured to perform various functions. Examples of such functions include data and voice communications, capturing images and video via a camera, recording audio, playing music files via a speaker system, and displaying images and video on a display. Some terminals include additional functionality which supports game playing, while other terminals are configured as multimedia players. More recently, terminals have been configured to receive broadcast and multicast signals which permit viewing of content such as videos and television programs. 
         [0006]    The above-described mobile terminal connects a communication such an external device having a display unit and an input unit as a notebook computer, a personal computer, a PDA and the like and is then able to exchange (transmit and receive) data with the connected external device. 
       SUMMARY OF THE INVENTION 
       [0007]    Accordingly, the present invention is directed to a terminal and controlling method thereof that substantially obviate one or more problems due to limitations and disadvantages of the related art. 
         [0008]    An object of the present invention is to provide a terminal and controlling method thereof, by which data of a first terminal is executable in a second terminal and by which all functions of the first terminal are usable using the second terminal. 
         [0009]    Another object of the present invention is to provide a terminal and controlling method thereof, by which when a wireless communication is connected between/among a plurality of terminals, content information contained on each screen of first and second terminals is interchangeably usable. 
         [0010]    A further object of the present invention is to provide a terminal and controlling method thereof, by which a tripartite heterogeneous communication function can be provided to first to third terminals using a short-range communication system and a mobile communication system. 
         [0011]    Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. 
         [0012]    To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a method of controlling a terminal according to the present invention includes a method of controlling an external terminal from a terminal, the method including establishing communication with the external terminal; receiving screen information that is displayed in the external terminal from the external terminal; displaying the screen information as is displayed in the external terminal on at least a portion of a screen of the terminal; selecting content information from the screen information that is displayed on the at least a portion of the screen of the terminal; and transmitting location information of the selected content information displayed on the at least a portion of the screen of the terminal to the external terminal. In another aspect of the present invention, a terminal includes a wireless communication unit configured to receive screen information that is displayed in an external terminal by a communication link with the external terminal; a display unit configured to display the screen information as is displayed in the external terminal on at least a portion of a screen of the terminal; and a control unit, when content information from the screen information that is displayed on the at least a portion of the screen is selected, the control unit is configured to transmit location information of the selected content information to the external terminal. 
         [0013]    In another aspect of the present invention, a method of controlling a terminal includes displaying screen information including at least one content information on a screen of the terminal; establishing communication with the external terminal; transmitting the displayed screen information to the external terminal; and when a signal including a location information of the at least one content information displayed on a screen of the external terminal is received from the external terminal, executing a function of the terminal corresponding to the at least one content information. 
         [0014]    In another aspect of the present invention, a terminal includes a display unit configured to display screen information including at least one content information; a communication unit, when communication with an external terminal is established, the communication unit is configured to transmit the screen information to the external terminal; and a control unit, when a signal including location information of the at least one content information on a screen of the external terminal is received from the external terminal, the control unit is configured to execute a function of the terminal corresponding to the received location information on the screen. 
         [0015]    In another aspect of the present invention, a method of controlling a terminal includes establishing communication with the plurality of external terminals including a first external terminal and a second external terminal; receiving first screen information displayed on the first external terminal and second screen information displayed on the second external terminal; displaying the first screen information as is displayed in the first external terminal and the second screen information as is displayed in the second external terminal on a first portion and a second portion on a screen of the terminal, respectively; and when content information displayed within the first portion is selected, transmitting the selected content information to the second external terminal. In another aspect of the present invention, a terminal includes a wireless communication unit configured to establish communication with a plurality of external terminals including a first external terminal and a second external terminal, the wireless communication unit is further configured to receive a first screen information as is displayed on the first external terminal and a second screen information as is displayed on the second external terminal; a display unit configured to display the first screen information and the second screen information on a first portion and a second portion on a screen of the terminal, respectively; and a control unit, when content information displayed within the first portion is selected, the control unit is configured to transmit the selected content information to the second external terminal. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0016]    The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings: 
           [0017]      FIG. 1  is a block diagram of a first terminal of a mobile terminal type according to one embodiment of the present invention; 
           [0018]      FIG. 2  is a block diagram of a second terminal of a PC type according to one embodiment of the present invention; 
           [0019]      FIG. 3  is a diagram for explaining a remote control system including a first terminal of a mobile terminal type and a second terminal of a PC type according to the present invention; 
           [0020]      FIG. 4  is a diagram of screen configurations for explaining a process for a second terminal to control a phonebook menu function of a first terminal by a wireless communication; 
           [0021]      FIG. 5  is a diagram of screen configurations for explaining a process for a second terminal to control a message menu function of a first terminal by a wireless communication; 
           [0022]      FIG. 6  is a diagram of screen configurations for explaining a process for a second terminal to control a camera menu function of a first terminal by a wireless communication; 
           [0023]      FIG. 7  is a diagram of screen configurations for explaining a process for a second terminal to control an image menu function of a first terminal by a wireless communication; 
           [0024]      FIG. 8  is a diagram for explaining an operation control system including a first terminal of a mobile terminal type and a third terminal of a mobile terminal type according to the present invention; 
           [0025]      FIG. 9  is a diagram for explaining an operation control system including a second terminal of a PC type and a third terminal of a mobile terminal type according to the present invention; 
           [0026]      FIG. 10  is a flowchart of a process for a second terminal to access a communication with a first terminal in an operation control system according to the present invention; 
           [0027]      FIG. 11  is a flowchart of a process for a first terminal to access a communication with a second terminal in an operation control system according to the present invention; 
           [0028]      FIG. 12  is a block diagram of a first terminal for screen information compression in an operation control system according to a first embodiment of the present invention; 
           [0029]      FIG. 13  is a block diagram of a PC type second terminal for decompression of compressed screen information in an operation control system according to a first embodiment of the present invention; 
           [0030]      FIG. 14  is a flowchart of a process for compressing a video on a screen of a first terminal according to one embodiment of the present invention; 
           [0031]      FIG. 15  is a flowchart of a process for compressing a video on a screen of a first terminal according to another embodiment of the present invention; 
           [0032]      FIG. 16  is a flowchart of a process for compressing a video on a screen of a first terminal according to a further embodiment of the present invention; 
           [0033]      FIG. 17  is a flowchart of a process for decompressing a compressed video shown in  FIG. 14  according to a first embodiment of the present invention; 
           [0034]      FIG. 18  is a flowchart of a process for decompressing a compressed video shown in  FIG. 15  according to a first embodiment of the present invention; 
           [0035]      FIG. 19  is a signal processing diagram for a data transceiving process between a first terminal and a second terminal in an operation control system according to a second embodiment of the present invention; 
           [0036]      FIG. 20  and  FIG. 21  are diagrams for screen configurations to explain a process for a first terminal to generate first notification information according to a second embodiment of the present invention; 
           [0037]      FIG. 22  is a signal processing diagram for a data transceiving process between a first terminal and a second terminal according to a third embodiment of the present invention; 
           [0038]      FIG. 23  and  FIG. 24  are diagrams of screen configurations for explaining a process for generating and displaying second notification information for a first terminal to announce an event occurrence according to a third embodiment of the present invention; 
           [0039]      FIG. 25  is a signal processing diagram for a process for a second terminal to access homogeneous content information of a first terminal according to a fourth embodiment of the present invention; 
           [0040]      FIG. 26  is a diagram of a screen configuration of a process for a second terminal to access homogeneous content information of a first terminal according to a fourth embodiment of the present invention; 
           [0041]      FIG. 27  is a signal processing diagram for a process for a second terminal to access heterogeneous content information of a first terminal according to a fourth embodiment of the present invention; 
           [0042]      FIG. 28  is a diagram of a screen configuration of a process for a second terminal to access heterogeneous content information of a first terminal according to a fourth embodiment of the present invention; 
           [0043]      FIG. 29  is a flowchart of a process for a second terminal to automatically connect a (or establish) communication with a first terminal using a short-range communication according to a fifth embodiment of the present invention; 
           [0044]      FIG. 30  is a diagram of a screen configuration of a process for a second terminal to set a time period for searching a first terminal periodically according to a fifth embodiment of the present invention; 
           [0045]      FIG. 31  is a diagram of a screen configuration of a process for a second terminal to reset a time period for searching a first terminal periodically according to a fifth embodiment of the present invention; 
           [0046]      FIG. 32  is a flowchart of a process for a second terminal to automatically connect a (or establish) communication with a first terminal using an RFID according to a fifth embodiment of the present invention; 
           [0047]      FIG. 33  is a diagram of a screen configuration of a process for a second terminal to automatically connect a (or establish) communication with a first terminal using an RFID according to a fifth embodiment of the present invention; 
           [0048]      FIG. 34  is a flowchart of a process for a second terminal to perform disconnection and reconnection operations of communications with a first terminal according to a sixth embodiment of the present invention; 
           [0049]      FIG. 35  is a diagram of a screen configuration of a process for a second terminal to perform disconnection and reconnection of communications with a first terminal according to a sixth embodiment of the present invention; 
           [0050]      FIG. 36  is a diagram of a screen configuration of a process for a second terminal to perform disconnection of a communication with a first terminal according to a sixth embodiment of the present invention; 
           [0051]      FIG. 37  and  FIG. 38  are diagrams of screen configurations for a process for a second terminal to inform a user of disconnected and reconnected statuses of communications with a first terminal according to a sixth embodiment of the present invention; 
           [0052]      FIG. 39  is a flowchart of a process for a first terminal to perform disconnection and reconnection operations of communications with a second terminal according to a sixth embodiment of the present invention; 
           [0053]      FIG. 40  is a flowchart of a process for a second terminal to receive, store, edit and execute content information from a first terminal according to a seventh embodiment of the present invention; 
           [0054]      FIG. 41  is a diagram of a screen configuration for a state that both screen information of a second terminal and screen information of a first terminal are displayed on a screen of the second terminal together according to a seventh embodiment of the present invention; 
           [0055]      FIGS. 42 to 46  are diagrams of screen configurations for a process for a second terminal to receive and store content information from a first terminal according to a seventh embodiment of the present invention; 
           [0056]      FIG. 47  is a diagram of a screen configuration for a process for a second terminal to classify and store content information received from a first terminal according to a seventh embodiment of the present invention; 
           [0057]      FIGS. 48 and 52  are diagrams of screen configurations for a process for a second terminal to execute content information received from a first terminal according to a seventh embodiment of the present invention; 
           [0058]      FIG. 53  is a flowchart of a process for transmitting content information of a second terminal to a first terminal according to a seventh embodiment of the present invention; 
           [0059]      FIG. 54  and  FIG. 55  are diagrams of screen configurations of a process for transmitting content information of a second terminal to a first terminal according to a seventh embodiment of the present invention; 
           [0060]      FIG. 56  is a flowchart of a process for a second terminal to deliver content information of a first terminal to a third terminal according to an eighth embodiment of the present invention; 
           [0061]      FIG. 57  is a diagram of a screen configuration for a state that screen information of a second terminal and screen information of first and third terminals are displayed on a screen of the second terminal together according to an eighth embodiment of the present invention; 
           [0062]      FIG. 58  is a diagram of a screen configuration for a process for a second terminal to deliver content information of a first terminal to a third terminal according to an eighth embodiment of the present invention; 
           [0063]      FIG. 59  is a flowchart of a process for a second terminal to deliver content information of a third terminal to a first terminal according to an eighth embodiment of the present invention; 
           [0064]      FIG. 60  is a diagram of a screen configuration for a process for a second terminal to deliver content information of a third terminal to a first terminal according to an eighth embodiment of the present invention; 
           [0065]      FIG. 61  is a signal processing diagram of a process for performing a voice call among a second terminal, a first terminal and a third terminal using different communication systems according to a ninth embodiment of the present invention; and 
           [0066]      FIG. 62  is a signal processing diagram of a process for performing a voice call among a second terminal, a first terminal and a third terminal using messages and speech according to a ninth embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0067]    Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. It is to be understood by those of ordinary skill in this technological field that other embodiments may be utilized, and structural, electrical, as well as procedural changes may be made without departing from the scope of the present invention. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. 
         [0068]    The suffixes ‘module’ and ‘unit’ for the elements used in the following description are given or used in common by considering facilitation in writing this disclosure only but fail to have meanings or roles discriminated from each other. 
         [0069]    First of all, a mobile terminal described in this disclosure can include such a video and audio outputtable terminal as a mobile phone, a smart phone, a digital broadcast terminal, a PDA (personal digital assistants), a PMP (portable multimedia player), a navigation system, a laptop computer, a personal computer (PC) and the like. 
         [0070]    In the following detailed description of the invention, assume a first terminal and a second terminal are a mobile terminal and a PC, respectively, by which the first and second terminals are non-limited. 
         [0071]    A first terminal according to the present invention is explained in detail with reference to  FIG. 1  as follows. 
         [0072]      FIG. 1  is a block diagram of a first terminal of a mobile terminal type according to one embodiment of the present invention. 
         [0073]    Referring to  FIG. 1 , a first terminal  100  according to the present invention is a mobile terminal and includes a communication unit  110 , an A/V (audio/video) input unit  120 , a user input unit  130 , a sensing unit  140 , an output unit  150 , a memory  160 , an interface unit  170 , a controller  180 , a power supply unit  190  and the like.  FIG. 1  shows the mobile terminal  100  having various components, but it is understood that implementing all of the illustrated components is not a requirement. Greater or fewer components may alternatively be implemented. 
         [0074]    In the following description, the above elements of the first terminal  100  are explained in sequence. 
         [0075]    First of all, the communication unit  110  can include at least one module which permits communication between the first terminal  100  and a wireless communication system, between the first terminal  100  and a network within which the first terminal  100  is located, or between the first terminal  100  and a second terminal  200  according to the present invention. 
         [0076]    For instance, the communication unit  110  can include a broadcast receiving module  111 , a mobile communication module  112 , a wireless internet module  113 , a short-range communication module  114 , a position-location module  115  and the like. 
         [0077]    The broadcast receiving module  111  receives a broadcast signal and/or broadcast associated information from an external broadcast managing server via a broadcast channel. 
         [0078]    The mobile communication module  112  transmits/receives wireless signals to/from one or more network entities (e.g., a base station, an external terminal, a server, etc.). Such wireless signals may represent a speech call signal, a video communication call signal and data according to text/multimedia message transceivings. 
         [0079]    The mobile communication module  112  is communication-connected to the second terminal  200  according to the present invention and is then able to transmit all data of the first terminal  100  to the second terminal  200  under the control of the controller  180 . For example, the mobile communication module  112  is able to transmit all screen information displayed on the display module  151  to the second terminal  200 . And, the mobile communication module  112  is able to transmit audio information outputted from the audio output module  152  to the second terminal  200 . Moreover, the mobile communication module  112  is able to transmit a key signal inputted from the user input unit  130  or a touch signal inputted from the display module  151  of a touchscreen type to the second terminal  200 . 
         [0080]    The wireless internet module  113  supports Internet access for the first terminal  100 . This module may be internally or externally coupled to the first terminal  100 . In this case, the wireless Internet technology can include WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), etc. 
         [0081]    The wireless internet module  113  is connected to the second terminal  200  according to the present invention by internet communication and is then able to transmit all data of the first terminal  100  to the second terminal  200  under the control of the controller  180 . For example, the wireless internet module  113  is able to transmit all screen information displayed on the display module  151  to the second terminal  200 . And, the wireless internet module  113  is able to transmit audio information outputted from the audio output module  152  to the second terminal  200 . Moreover, the wireless internet module  113  is able to transmit a key signal inputted from the user input unit  130  or a touch signal inputted from the display module  151  of a touchscreen type to the second terminal  200 . 
         [0082]    The short-range communication module  114  facilitates relatively short-range communications. Suitable technologies for implementing this module include Bluetooth, infrared data association (IrDA), ultra-wideband (UWB), ZigBee, Wi-Fi (wireless fidelity), RFB (remote frame buffer) and the like. 
         [0083]    The short-range communication module  114  is communication-connected to the second terminal  200  according to the present invention and is then able to transmit all data of the first terminal  100  to the second terminal  200  under the control of the controller  180 . For example, the short-range communication module  114  is able to transmit all screen information displayed on the display module  151  to the second terminal  200 . And, the short-range communication module  114  is able to transmit audio information outputted from the audio output module  152  to the second terminal  200 . Moreover, the short-range communication module  114  is able to transmit a key signal inputted from the user input unit  130  or a touch signal inputted from the display module  151  of a touchscreen type to the second terminal  200 . 
         [0084]    The position-location module  115  identifies or otherwise obtains the location of the first terminal  100 . If desired, this module may be implemented with a global positioning system (GPS) module. 
         [0085]    Referring to  FIG. 1 , the audio/video (A/V) input unit  120  is configured to provide audio or video signal input to the first terminal  100 . As shown, the A/V input unit  120  includes a camera  121 , a microphone  122  and the like. 
         [0086]    The camera  121  receives and processes image frames of still pictures or video, which are obtained by an image sensor in a video call mode or a photographing mode. And, the processed image frames can be displayed on the display unit  151 . 
         [0087]    At least two or more cameras can be provided under the circumstance of usage. And, the image frame processed by the camera  121  can be transmitted to the second terminal  200  via the communication unit  110 . 
         [0088]    The microphone  122  receives an external audio signal while the portable device is in a particular mode, such as phone call mode, recording mode and voice recognition mode. This audio signal is processed and converted into electric audio data. 
         [0089]    The processed audio data is transformed into a format transmittable to a mobile communication base station via the mobile communication module  112  in case of a call mode. The microphone  122  typically includes assorted noise removing algorithms to remove noise generated in the course of receiving the external audio signal. 
         [0090]    The user input unit  130  generates input data responsive to user manipulation of an associated input device or devices. Examples of such devices include a keypad, a dome switch, a touchpad (e.g., static pressure/capacitance), a jog wheel, a jog switch, etc. 
         [0091]    In this case, a backlight unit is provided under the user input unit  130  to generate light for identifying the keypad, the dome switch, the jog wheel and the jog switch in a dark environment. 
         [0092]    The sensing unit  140  provides sensing signals for controlling operations of the first terminal  100  using status measurements of various aspects of the mobile terminal. For instance, the sensing unit  140  may detect an open/close status of the first terminal  100 , relative positioning of components (e.g., a display and keypad) of the mobile terminal  100 , a change of position of the first terminal  100  or a component of the first terminal  100 , a presence or absence of user contact with the first terminal  100 , orientation or acceleration/deceleration of the first terminal  100 . 
         [0093]    Meanwhile, the output unit  150  generates outputs relevant to the senses of sight, hearing, touch and the like. And, the output unit  150  includes the display unit (or display module)  151 , an audio output module  152 , an alarm unit  153 , a haptic module  154  and the like. 
         [0094]    The display module  151  may be implemented using known display technologies including, for example, a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT-LCD), an organic light-emitting diode display (OLED), a flexible display and a three-dimensional display. The mobile terminal  100  may include one or more of such displays. 
         [0095]    At least two display units  151  can be provided to the first terminal  100  in accordance with the implemented configuration of the first terminal  100 . For instance, a plurality of display modules can be arranged on a single face of the first terminal  100  in a manner of being spaced apart from each other or being built in one body. Alternatively, a plurality of display modules can be arranged on different faces of the first terminal  100 . 
         [0096]    In case that the display unit  151  and a sensor for detecting a touch action (hereinafter called ‘touch sensor’) configures a mutual layer structure (hereinafter called ‘touchscreen’), it is able to use the display unit  151  as an input device as well as an output device. In this case, the touch sensor can be configured as a touch film, a touch sheet, a touchpad or the like. 
         [0097]    The touch sensor can be configured to convert a pressure applied to a specific portion of the display unit  151  or a variation of a capacitance generated from a specific portion of the display unit  151  to an electric input signal. Moreover, it is able to configure the touch sensor to detect a pressure of a touch as well as a touched position or size. 
         [0098]    The proximity sensor  141  is the sensor that detects a presence or non-presence of an object approaching a prescribed detecting surface or an object existing around the proximity sensor using an electromagnetic field strength or infrared ray without mechanical contact. Hence, the proximity sensor has durability longer than that of a contact type sensor and also has utility wider than that of the contact type sensor. 
         [0099]    The proximity sensor can include one of a transmittive photoelectric sensor, a direct reflective photoelectric sensor, a mirror reflective photoelectric sensor, a radio frequency oscillation proximity sensor, an electrostatic capacity proximity sensor, a magnetic proximity sensor, an infrared proximity sensor and the like. 
         [0100]    The audio output module  152  functions in various modes including a call signal receiving mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode and the like to output audio data which is received from the wireless communication unit  110  or is stored in the memory  160 . 
         [0101]    During operation, the audio output module  152  outputs an audio signal related to a particular function (e.g., call received, message received, etc.). The audio output module  152  is often implemented using one or more speakers, buzzers, other audio producing devices, and combinations thereof. 
         [0102]    The alarm output unit  153  outputs a signal for announcing the occurrence of a particular event associated with the first terminal  100 . Typical events include a call received event, a message received event, a key signal inputted event, and a touch input received event. 
         [0103]    The haptic module  154  generates various tactile effects that can be sensed by a user. Vibration is a representative one of the tactile effects generated by the haptic module  154 . Strength and pattern of the vibration generated by the haptic module  154  are controllable. For instance, different vibrations can be outputted in a manner of being synthesized together or can be outputted in sequence. 
         [0104]    The memory  160  is generally used to store various types of data to support the processing, control, and storage requirements of the controller  180 . Examples of such data include program instructions for applications operating on the first terminal  100 , phonebook data, message data, audio data, still pictures data, moving pictures data, etc. Moreover, data for various patterns of vibration and/or sound outputted in case of a touch input to the touchscreen can be stored in the memory  160 . 
         [0105]    And, the memory  160  is provided with an operation system (OS) program for controlling operations of the elements of the first terminal  100 . Moreover, the memory  160  is provided with a plurality of applications for running content information executed in the first terminal  100 . 
         [0106]    For example, the applications can include a word processor, an image viewer, a video player, an audio player, an internet connector and the like. The above-described OS program and applications are drivable and executable under the control of the controller  180 . 
         [0107]    Moreover, the above-described OS program and applications can be stored as software in the memory  160  or can be provided as ‘module’ types. 
         [0108]    Meanwhile, the interface unit  170  is often implemented to couple the first terminal  100  with external devices. 
         [0109]    The above-described interface unit  170  may be configured using a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, a port for coupling to a device having an identity module, audio input/output ports, video input/output ports, an earphone port, a USB (universal serial bus) port and/or the like. 
         [0110]    In particular, the interface unit  170  is wire-connected to the second terminal  200  via a data cable or the like and is then able to transmit all data of the first terminal  100  to the second terminal  200 . For example, the interface unit  170  is able to transmit all screen information displayed on the display module  151  to the second terminal  200 . The interface unit  170  is able to transmit audio information outputted from the audio output module  152  to the second terminal  200 . And, the interface unit  170  is able to transmit a key signal inputted from the user input unit  130  or a touch signal inputted from the display module  151  of the touchscreen type to the second terminal  200 . 
         [0111]    Meanwhile, the controller  180  normally controls overall operations of the first terminal  100 . For instance, the controller  180  performs control and processing relevant to a voice call, a data communication, a video call and the like. 
         [0112]    The control operating process of the controller  180  according to an embodiment of the present invention shall be explained in detail later. 
         [0113]    A speech text converting unit  181  converts a speech signal inputted from the microphone  122  to a text signal or converts a call speech signal received from the communication unit  110  to a text signal. Moreover, the speech text converting unit  181  converts a content of a message received from the communication unit  110  to a speech signal. 
         [0114]    The speech text converting unit  181  can include a TTS (text to speech) module. 
         [0115]    And, the first terminal  100  according to the present invention can be provided with an RFID tag  182  for recording device information of the first terminal  100 , which is used for the communication connection to the second terminal  200 . 
         [0116]    Meanwhile, the power supply unit  190  provides power required by the various components for the mobile terminal  100 . The power may be internal power, external power, or combinations thereof. 
         [0117]    Various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or some combination thereof. 
         [0118]    For a hardware implementation, the embodiments described herein may be implemented within one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a selective combination thereof. Such embodiments may also be implemented by the controller  180 . 
         [0119]    For a software implementation, the embodiments described herein may be implemented with separate software modules, such as procedures and functions, each of which perform one or more of the functions and operations described herein. The software codes can be implemented with a software application written in any suitable programming language and may be stored in memory such as the memory  160 , and executed by a controller or processor, such as the controller  180 . 
         [0120]    In the above description, the configurations of the first terminal  100  according to the present invention have been explained with reference to  FIG. 1 . 
         [0121]    In the following description, the second terminal  200  according to the present invention shall be explained in detail with reference to  FIG. 2 . 
         [0122]      FIG. 2  shows that the second terminal  200  according to the present invention is a personal computer (hereinafter abbreviated ‘PC’). Besides, as mentioned in the foregoing description, a stationary terminal  200  can include every device capable of communicating with the first terminal  100 , displaying images and outputting audio as well as the PC. 
         [0123]      FIG. 2  is a block diagram of a second terminal of a PC type according to one embodiment of the present invention. 
         [0124]    Referring to  FIG. 2 , a second terminal  200  according to the present invention includes a communication unit  210 , an input unit  220 , a memory  230 , a speaker  240 , a microphone  250 , a display unit  260  and a controller  270 . 
         [0125]    And, it is understood that the elements (e.g., a camera, an interface unit, etc.) mentioned in the foregoing description of the first terminal  100  can be additionally loaded in the second terminal  200  in addition to the above described elements. 
         [0126]    The communication unit  210  is communication-connected to the first terminal  100  according to the present invention under the control of the controller  270 . And, the communication unit  210  receives screen information displayed in the first terminal  100 , audio information and key input information from the first terminal  100 . 
         [0127]    Like the former communication unit  110  of the first terminal  100  shown in  FIG. 1 , the above-configured communication unit  210  of the second terminal  100  can further include a mobile communication module enabling communication between the mobile terminal  100  and a stationary terminal  200 , a wireless internet module and a short-range communication module. 
         [0128]    Meanwhile, the input unit  220  generates a key signal for an operation control of the second terminal  200  or a key signal for an operation control of the first terminal  100 . Occasionally, the input unit  220  can include a keypad, a dome switch, a touch pad (e.g., static pressure/capacitance), a jog wheel, a jog switch, a mouse, etc. 
         [0129]    The memory  230  is able to store a program for an operation of the second terminal  200 . And, various data are stored in the memory  230 . 
         [0130]    And, the memory  230  is provided with an operation system (OS) program for controlling operations of the elements of the second terminal  200 . Moreover, the memory  230  is provided with a plurality of applications for running content information executed in the second terminal  200 . For example, the applications can include a word processor, an image viewer, a video player, an audio player, an internet connector and the like. The above-described OS program and applications are drivable and executable under the control of the controller  270 . 
         [0131]    Moreover, the above-described OS program and applications can be stored as software in the memory  230  or can be provided as ‘module’ types. 
         [0132]    The memory  230  may be implemented using any type or combination of suitable volatile and non-volatile memory or storage devices including hard disk, random access memory (RAM), static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk, multimedia card micro type memory, card-type memory (e.g., SD memory, XD memory, etc.), or other similar memory or data storage device. 
         [0133]    The speaker  240  outputs data containing audio stored in the memory and various audios generated from the second terminal  200 . And, the microphone  250  receives an input of an external audio signal and then processes the input into an electric speech data. 
         [0134]    The display unit  260  displays information processed by the second terminal  200 . This display unit  260  may be implemented using known display technologies including, for example, a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT-LCD), an organic light-emitting diode display (OLED), a flexible display and a three-dimensional display. And, the second terminal  200  may include one or more of such displays. Moreover, the display unit  260  is coupled to a touch sensor to have a touchscreen type. 
         [0135]    The controller  270  controls overall operations of the second terminal  200 . According to the present invention, the controller  270  displays screen information received from the first terminal  100  and transmits a key signal inputted via the input unit  220  to the first terminal  100  via the communication unit  210 . 
         [0136]    The speech text converting unit  271  converts a speech signal inputted from the microphone  250  to a text signal or converts a call speech signal received from the communication unit  210  to a text signal. 
         [0137]    Moreover, the speech text converting unit  271  converts a text signal inputted from the touchscreen type display unit  260  or the input unit  220  to a speech signal or converts a content of a message received from the communication unit  210  to a speech signal. 
         [0138]    The above-configured speech text converting unit  181  can include a TTS (text to speech) module. 
         [0139]    Besides, the second terminal  200  according to the present invention includes an RFID reader  272  configured to read out the data stored in the former RFID tag  182  provided to the first terminal  100  shown in  FIG. 1 . 
         [0140]    If the first terminal  100  is located in the neighborhood of the second terminal  200 , the RFID reader  272  reads or interprets the device information stored in the RFID tag  182  provided to the first terminal  100  and then outputs the read device information to the controller  270 . 
         [0141]    Once the device information of the first terminal  100  is read via the RFID reader  272 , the controller  270  checks whether the read device information of the first terminal  100  exists on an access authentication device information list stored in the memory  230 . If the read device information on the first terminal  100  exists on the access authentication device information list, the controller  270  connects a communication with the first terminal  100  via the communication unit  210 . 
         [0142]    In the above description, the configurations of the second terminal  200  according to the present invention are explained. 
         [0143]    In the following description, embodiments relevant to a process for transmitting and receiving data (e.g., screen information, audio information and key input information) between the above configured first and second terminals  100  and  200  are explained with reference to the accompanying drawings. Optionally, the following embodiments are available individually or by being combined together. 
         [0144]      FIG. 3  is a diagram for explaining a remote control system including a first terminal  100  and a second terminal  200  according to the present invention. 
         [0145]    Referring to  FIG. 3 , all data (screen information, audio information and key input information) of the first terminal  100  can be transmitted to the second terminal  200 . In this case, the second terminal  200  is able to control an operation of the first terminal  100  by wireless communication. 
         [0146]    In particular, once the first terminal  100  is wireless-connected to the second terminal  200 , the first terminal  100  transmits screen information displayed on the display unit  151  to the second terminal  200  so that the screen information of the first terminal  100  is reproduced on at least a portion of a screen of the second terminal  200 . 
         [0147]    In this case, the wireless communication can include at least one of short-range wireless communications including Bluetooth, infrared data association (IrDA), ultra-wideband (UWB), ZigBee, Wi-Fi (wireless fidelity), RFB (remote frame buffer), other wired or wireless connection or wired or wireless communication link and the like. 
         [0148]    Meanwhile, the second terminal  200  displays the screen information received from the first terminal  100  on a prescribed portion of its screen and is then able to control all menu functions of the first terminal  100  by wireless (or wired) communication via the input unit  220  such as a keypad, a mouse and the like. 
         [0149]    In this case, a displayed size of the screen information of the first terminal  100 , which is displayed on the second terminal  200 , can be set equal to that of an image actually displayed on the first terminal  100 , or set to be different to that of the image actually displayed on the first terminal  100 . 
         [0150]    Once the screen information is received from the first terminal  100 , the second terminal  200  displays a manipulation unit for enabling a user to manipulate all functions of the first terminal  100  together with the screen information. In this case, the manipulation unit can have the same configuration of a shape of a menu key, a call key, a direction key, a keypad or the like, which is provided to a main body of the first terminal  100 . For example, the manipulation unit displayed on the second terminal  200  may be a depiction of the first terminal  100 , or at least depiction of a screen portion containing the screen information of the first terminal  100 . 
         [0151]    For instance, referring to  FIG. 3 , the first terminal  100  is a mobile terminal provided with a touchscreen type manipulation unit. Within the manipulation unit of the first terminal  100 , the screen information of the first terminal  100  and menu execution icons of a phonebook  1 , a message  2 , a camera  3  and an image  4  are included, for example. 
         [0152]    If so, the second terminal  200  displays the menu execution icons of the phonebook  1 , the message  2 , the camera  3  and the image  4  within the manipulation unit exactly like those of the first terminal  100 . 
         [0153]    In the following description, a process for the second terminal  200  to control an operation of the first terminal  100  via the manipulation unit by wireless communication is explained with reference to  FIGS. 4 to 7 . 
         [0154]      FIG. 4  is a diagram of screen configurations for explaining a process for a second terminal to control a phonebook menu function of a first terminal by a wireless communication. 
         [0155]    Referring to  FIG. 4 , if the phonebook menu execution icon  1  is selected from the screen shown in  FIG. 3  via the input unit  220 , the controller  270  of the second terminal  200  obtains a location of the selected phonebook menu execution icon  1  and then transmits a signal for notifying the obtained location information to the first terminal  100 . 
         [0156]    For instance, if a screen resolution of the first terminal  100 , which is displayed on the screen of the second terminal  100 , is 600×400 pixels and a location of the phonebook menu execution icon  1  on the 600×400 screen is ‘horizontal 531-534 and vertical 96-100’, the controller  270  transmits a signal for notifying the horizontal 531-534 and vertical 96-100 corresponding to the location of the phonebook menu execution icon  1  to the first terminal  100 . 
         [0157]    The controller  180  of the first terminal  100  recognizes the location information contained in the signal received from the second terminal  200 , executes a phonebook menu existing at the recognized location on the screen shown in  FIG. 3 , and displays submenus belonging to the phonebook menu. 
         [0158]    Meanwhile, the controller  270  of the second terminal  200  receives the screen information shown in (a) of  FIG. 4  from the first terminal  100  and then displays the received screen information. If a menu of ‘1. Search phonebook’ ( 1   a ) is selected from the submenus displayed within the screen information shown in (a) of  FIG. 4  via the input unit  220 , the controller  270  of the second terminal  200  transmits a signal for notifying the location information of the selected menu of ‘1. Search phonebook’ ( 1   a ) to the first terminal  100 . 
         [0159]    The controller  180  of the first terminal  100  recognizes the location information contained in the signal received from the second terminal  200 , executes the menu of ‘1. Search phonebook’ ( 1   a ) existing at the recognized location on the screen shown in (a) of  FIG. 4 , and then displays a contact information list registered within the phonebook, as shown in (b) of  FIG. 4 . And, the controller  180  of the first terminal  100  transmits the screen information shown in (b) of  FIG. 4  to the second terminal  200 . 
         [0160]    Subsequently, the controller  270  of the second terminal  200  receives the screen information shown in (b) of  FIG. 4  from the first terminal  100  and then displays the received screen information. 
         [0161]    If ‘1. kim’ ( 1   b ) is selected from the contact information list displayed within the screen information shown in (b) of  FIG. 4  via the input unit  220  and a call connection key of the ‘1. kim’ ( 1   b ) is then selected, the controller  270  of the second terminal  200  sequentially transmits location information of the selected ‘1. kim’ ( 1   b ) and location information of the call connection key to the first terminal  100 . 
         [0162]    Once the location information of the selected ‘1. kim’  1   b  and location information of the call connection key are sequentially received from the second terminal  200 , the controller  180  of the first terminal  100  attempts a call connect to the ‘1. kim’  1   b  by controlling the communication unit  110 , as shown in (c) of  FIG. 4  and then transmits the screen information shown in (c) of  FIG. 4  to the second terminal  200 . 
         [0163]      FIG. 5  is a diagram of screen configurations for explaining a process for a second terminal to control a message menu function of a first terminal by a wireless communication. 
         [0164]    Referring to  FIG. 5 , if a user of the second terminal  200  selects a message menu execution icon  2  within the manipulation unit by manipulating the input unit  220  such as a mouse, a keypad and the like, the controller  270  transmits location information of the selected menu execution icon  2  to the first terminal  100 . 
         [0165]    The controller  180  of the first terminal  100  executes a message menu existing at the location received from the first terminal  100 , as shown in (a) of  FIG. 5 , and then displays submenus belonging to the message menu. Moreover, the controller  180  of the first terminal transmits the screen information shown in (a) of  FIG. 5  to the second terminal  200 . 
         [0166]    Subsequently, the controller  270  of the second terminal  200  receives the screen information shown in (a) of  FIG. 5  from the first terminal  100  and then displays the received screen information. If a menu of ‘1. Transmit message’  2   a  is selected from the submenus displayed within the screen information shown in (a) of  FIG. 5  via the input unit  220 , the controller  270  of the second terminal  200  transmits a displayed location of the menu of ‘1. Transmit message’ (or ‘message send’)  2   a  to the first terminal  100 . 
         [0167]    The controller  180  of the first terminal  100 , as shown in (b) of  FIG. 5 , executes the menu of ‘1. Transmit message’  2   a  at the received location and then displays a contact information list registered with the phonebook. Moreover, the controller  180  of the first terminal  100  transmits the screen information shown in (b) of  FIG. 5  to the second terminal  200 . 
         [0168]    Subsequently, the controller  270  of the second terminal  200  receives the screen information shown in (b) of  FIG. 5  and then displays the received screen information. If ‘1. kim’  2   b  is selected from the contact information list displayed within the screen information shown in (b) of  FIG. 5  via the input unit  220 , the controller  270  of the second terminal  200  transmits location information of the contact information ‘1. kim’  2   b  to the first terminal  100 . 
         [0169]    If the location information of the contact information ‘1. kim’  2   b  is received from the second terminal  200 , the controller  180  of the first terminal  100 , as shown (c) of  FIG. 5 , displays a message writing window and transmits the screen information shown in (c) of  FIG. 5  to the second terminal  200 . In this case, the message writing window can include a keypad  2   c  for inputting a content of a message and a message content window  2   d  on which the content of the message inputted via the keypad  2   c  is displayed. 
         [0170]    The controller  270  of the second terminal  200  receives the screen information shown in (c) of  FIG. 5  from the first terminal  200  and then displays the received screen information. 
         [0171]    If a plurality of characters is selected from the keypad  2   c  via the input unit  220 , the controller  270  of the second terminal  200  sequentially transmits location information of the selected characters to the first terminal  100 . 
         [0172]    Subsequently, the controller  180  of the first terminal  100  displays characters existing at the respective locations, which are being sequentially received, on the message content window  2   d  and transmits screen information having the characters reflected on the message content window to the second terminal  200 . 
         [0173]    The second terminal  200  receives the screen information having the inputted characters reflected on the message content window  2   d  from the first terminal  100  and then displays the received screen information. If a key for sending the message written in the message content window  2   d  to the ‘1. kim’  2   b  is selected from the input unit  220 , the second terminal  200  transmits location information of the selected key to the first terminal  100 . 
         [0174]    Subsequently, if the location information of the selected key is received from the second terminal  200 , the controller  180  of the first terminal  100  sends the message written in the message content window  2   d  to the ‘1. kim’  2   b  by controlling the communication unit  110  and also sends the screen information shown in (d) of  FIG. 5  to the second terminal  200 . 
         [0175]      FIG. 6  is a diagram of screen configurations for explaining a process for a second terminal to control a camera menu function of a first terminal by a wireless communication. 
         [0176]    Referring to  FIG. 6 , if a user of the second terminal  200  selects a camera menu execution icon within the manipulation unit by manipulating the input unit  220  such as a mouse, a keypad and the like, the controller  270  of the second terminal  200  transmits a signal for commanding a cameral menu execution selected by the user to the first terminal  100 . 
         [0177]    In this case, the command signal is the signal containing the location of the camera menu execution icon  3 , as shown in  FIG. 4  and  FIG. 5 , and commands an action of the first terminal  100  using the location information. 
         [0178]    The controller  180  of the first terminal  100  executes the camera menu according to the received command signal, as shown in (a) of  FIG. 6 , and then displays submenus belonging to the camera menu. Moreover, the controller  180  of the first terminal  100  transmits screen information shown in (a) of  FIG. 6  to the second terminal  200 . 
         [0179]    The controller  270  of the second terminal  200  receives the screen information shown in (a) of  FIG. 6  from the first terminal  100  and then displays the received screen information. If a key signal for capturing a preview picture incident from the camera  121  is inputted via the input unit  220 , the controller  270  of the second terminal  200  transmits a signal for commanding to capture a picture to the first terminal  100 . 
         [0180]    Subsequently, the controller  180  of the first terminal  100  captures a current preview picture incident from the camera  121  according to the received command signal, as shown in (c) of  FIG. 6 , and transmits screen information shown in (c) of  FIG. 6  to the second terminal  200 . 
         [0181]      FIG. 7  is a diagram of screen configurations for explaining a process for a second terminal to control an image menu function of a first terminal by a wireless communication. 
         [0182]    Referring to  FIG. 7 , if a user of the second terminal  200  selects an image menu execution icon within the manipulation unit by manipulating the input unit  220  such as a mouse, a keypad and the like, the controller  270  of the second terminal  200  transmits a signal for commanding an image menu execution selected by the user to the first terminal  100 . 
         [0183]    The controller  180  of the first terminal  100  executes the image menu according to the received command signal, as shown in (a) of  FIG. 7 , and then displays a list of images stored within the image menu. Moreover, the controller  180  of the first terminal  100  transmits screen information shown in (a) of  FIG. 7  to the second terminal  200 . 
         [0184]    The controller  270  of the second terminal  200  receives the screen information shown in (a) of  FIG. 7  from the first terminal  100  and then displays the received screen information. If ‘1. a.jpg’  4   a  to be displayed is selected via the input unit  220 , the controller  270  of the second terminal  200  transmits a signal for commanding a display of ‘1. a.jpg’  4   a  to the first terminal  100 . 
         [0185]    Subsequently, the controller  180  of the first terminal  100  drives an image display application according to the received command signal and then displays the ‘1. a.jpg’ on the screen via the driven application, as shown in (b) of  FIG. 7 . Moreover, the controller  180  of the first terminal  100  transmits the screen information shown in (b) of  FIG. 7  to the second terminal  200 . 
         [0186]    In the above description, a process for the second terminal  200  to control an operation of the first terminal  100  is explained in detail with reference to  FIGS. 4 to 7 . 
         [0187]    Although the above description with reference to  FIGS. 4 to 7  relates to the operation control process for the phonebook menu  1 , the message menu  2 , the camera menu  3  and the image menu  4  of the first terminal  100 , it non-limits various implementations of the present invention. For instance, the second terminal  200  is able to control operations of any and all menu functions, or other icons or buttons of the first terminal  100 . 
         [0188]    An operation control system according to the present invention can include the first terminal  100  of a mobile terminal type and the second terminal  200  of a PC type, as shown in  FIGS. 3 to 7 , include the first terminal  100  of a mobile terminal type and a third terminal  300  of a mobile terminal type, as shown in  FIG. 8 , or include the second terminal  200  of a PC type and first and third terminals  100  and  300  of a plurality of mobile terminal types, as shown in  FIG. 9 . 
         [0189]    In the following description, a communication access process between the first terminal  100  and the second terminal  200  in an operation control system according to the present invention is explained in detail with reference to  FIG. 10  and  FIG. 11 . 
         [0190]      FIG. 10  is a flowchart of a process for a second terminal to access a communication with a first terminal in an operation control system according to the present invention. 
         [0191]    Referring to  FIG. 10 , If the controller  180  of the first terminal  100  receives a communication access request signal from the second terminal  200  via the communication unit  110  [S 11 ], it checks whether the second terminal  200  is an accessible device by being authenticated in advance [S 12 ]. 
         [0192]    In particular, the controller  180  checks whether device information on the second terminal  200  exists on an access authentication device information list stored in the memory  160 . If the device information on the second terminal  200  exists on the access authentication device information list [S 13 ], the controller  180  accesses a communication with the second terminal by sending a signal for permitting a communication access to the second terminal  200  via the communication unit  110  [S 14 ]. 
         [0193]    Once the communication is connected to the second terminal  200 , the controller  180  sends screen information currently displayed on the display unit  151  to the second terminal  200 . 
         [0194]    Meanwhile, the controller  180  compares the device information received from the second terminal  200  to the device information corresponding to the second terminal  200  on the access authentication device information list. If the former device information and the latter device information differ from each other, the controller  180  updates the device information received from the second terminal  200  on the access authentication device list [S 15 ]. 
         [0195]    Yet, as a result of the checking step S 12 , if the device information of the second terminal  200  fails to exist on the access authentication device information list, the controller  180  displays a selection window for selecting a presence or non-presence of an access permission of the second terminal  200  on the screen of the display unit  151 . 
         [0196]    If ‘access not permitted’ is selected from the selection window, the controller  180  blocks an access of the second terminal  200 . If ‘access permitted’ is selected from the selection window [S 16 ], the controller  180  provides a user with an authentication process for the access of the second terminal  200  [S 17 ]. If an authentication for the second terminal  200  is permitted by a user [S 18 ], the controller  180  performs actions of the steps S 14  and S 15 . 
         [0197]      FIG. 11  is a flowchart of a process for a first terminal to access a communication with a second terminal in an operation control system according to the present invention. 
         [0198]    Referring to  FIG. 11 , if a command for accessing a communication with the first terminal for a remote control of the first terminal is inputted by a user via the input unit  220 , the controller  270  of the second terminal  200  searches in the neighborhood for the first terminal  100  by controlling the communication unit  210  [S 21 ]. 
         [0199]    In this case, the controller  270  is able to search in the neighborhood for the first terminal  100  using one of various search methods (e.g., device inquiry of Bluetooth, service discovery, etc.). Alternatively, the controller  270  is able to search for the first terminal  100  using TCP/IP based SSDP. 
         [0200]    As a result of the searching step S 21 , if the first terminal  100  is found, the controller  270  checks whether the first terminal  100  is an access authenticated device [S 22 ]. 
         [0201]    If the first terminal  100  is an accessible device [S 23 ], the controller  270  transmits a signal for requesting a communication access to the first terminal  100  via the communication unit  210  [S 24 ]. If a signal for permitting the access is received from the first terminal  100  via the communication unit [S 25 ], the controller  270  connects the communication with the first terminal  100  [S 26 ]. 
         [0202]    Yet, if the first terminal  100  is the device failing to be authenticated in the step S 22 , the controller  270  provides a user with a process for authenticating the access to the first terminal  100  [S 27 ]. If the user permits the authentication for the first terminal  100  [S 28 ], the controller  270  connects the communication with the first terminal  100 . 
         [0203]    In the above description, the communication connecting process between the first terminal  100  and the second terminal  200  is explained in detail 
         [0204]    In the following description, a process for compressing and decompressing screen information in a first terminal according to the present invention is explained in detail with reference to  FIGS. 12 to 18 . 
         [0205]    First of all, an apparatus for compressing screen information of a first terminal of a mobile terminal type and an apparatus for decompressing the screen information in an operation control system according to the present invention are explained with reference to  FIG. 12  as follows. 
       First Embodiment 
       [0206]      FIG. 12  is a block diagram of a first terminal for screen information compression in an operation control system according to a first embodiment of the present invention. 
         [0207]    In the following description, the configuration of a first terminal  400  may have the same elements of the first terminal  100  shown in  FIG. 1  or may not. 
         [0208]    Yet, each of the first terminal  400  shown in  FIG. 12  and the former first terminal  100  shown in  FIG. 1  basically includes the same device of the mobile terminal type and can perform the same operations. 
         [0209]    Namely, in the following description of the first embodiment, a process for compressing screen information using the first terminal  400  shown in  FIG. 12  is explained. 
         [0210]    Referring to  FIG. 12 , a first terminal  400  for implementing an operation control system includes an exterior configuration  410 , an internal hardware  430 , an application  450 , a virtual server  470 , a controller (this is the same of the controller  180  shown in  FIG. 1 , hereinafter indicated by a reference number  180 ), and the like. 
         [0211]    The exterior configuration  410  of the first terminal  400  includes an LCD  411 , a speaker  412 , a microphone  413 , a keypad/touchpad  414 , a network device  415  and the like. 
         [0212]    The internal hardware  430  includes a display module  431 , a video memory  432 , an audio module  433 , an audio output memory  434 , an audio input memory  435 , an input device module  436 , a wire/wireless network module  437 , and the like. In this case, the video memory  432  stores and outputs video information on a screen of the first terminal  400 . The wire/wireless network module  437  is connected to an external network device  415  and then transmits compressed and encoded video information to a second terminal  500 . 
         [0213]    The application  450  is implemented using software and includes an OS/device driver  451 , a video output unit  452 , an audio output unit  453 , an audio input unit  454 , an input processing unit  455  and the like. 
         [0214]    The virtual server  470  is implemented using software and includes a server video capture and encoding unit  471 , a server audio capture and encoding unit  472 , a sever audio decoding unit  473 , a server input device information unit  474 , a server protocol  475  and the like. 
         [0215]    The server video capture and encoding unit  471  of the virtual server  470  receives an input of video information on a screen of the first terminal  400  from the video memory  432  and then extracts low frequency information and middle frequency information from the inputted video information. 
         [0216]    The server video capture and encoding unit  471  determines a variation extent of current screen information by comparing low frequency and middle frequency information of current video information to low frequency and middle frequency information of previous video information, respectively. The server video capture and encoding unit  471  determines the current video information as ‘total variation’, ‘partial variation’ or ‘no variation’ according to the variation extent. 
         [0217]    If the current video information is determined as ‘total variation’, the server video capture and encoding unit  471  respectively quantizes the low frequency information and the middle frequency information of the current video information. 
         [0218]    If the current video information is determined as ‘partial variation’, the server video capture and encoding unit  471  respectively quantizes the low frequency information and the middle frequency information of the current video information and then generates information indicating a difference from the former low frequency information of the previous video information and information indicating a difference from the former middle frequency information of the previous video information. 
         [0219]    If the current video information is determined as ‘no variation’, the server video capture and encoding unit  471  extracts high frequency information from the current video information and then quantizes the extracted high frequency information. The server video capture and encoding unit  471  then performs entropy encoding on the compressed video information. 
         [0220]    If the current video information is determined as ‘no variation’, the server video capture and encoding unit  471  quantizes the middle frequency information of the current video information and then generates difference information indicating a difference between the quantized middle frequency information and the former middle frequency information in ‘total variation’ or ‘partial variation’. In this case, the quantization of the middle frequency information in ‘no variation’ has resolution higher than that of the middle frequency information in ‘total variation’ or ‘partial variation’. 
         [0221]    In doing so, in case of determining the variation extent of the current video information, the server video capture and encoding unit  471  calculates the number of pixels, of which variation between corresponding pixels is equal to or greater than a threshold, or a ratio of this number. 
         [0222]    If the server video capture and encoding unit  471  determines the current screen information as ‘no variation’, it is able to further perform a step of sampling a predetermined number of pixels in current video information. 
         [0223]    In doing so, the pixels sampled by the server video capture and encoding unit  471  are compared to the pixels sampled in the previous video information. In this case, if a difference between the corresponding pixels has the pixel number equal to or greater than a prescribed threshold or the number ratio is equal to or greater than a prescribed ratio, the current video information is re-determined as ‘partial variation’. And, a process corresponding to ‘partial variation’ is performed. 
         [0224]    The controller  180  compresses, encodes and outputs the video information of the first terminal  400  by controlling the video output unit  452  of the application and the server video capture and encoding unit  471  of the virtual server  450 . In this case, an identifier corresponding to ‘total variation’, ‘partial variation’ or ‘no variation’ is attached to the outputted compressed video information. For instance, this identifier can be set to 0, 1 or 2. 
         [0225]    In the configuration of the first terminal  400  to implement the operation control system, the exterior configuration  410  is connected to each of correspondent elements of the internal hardware  430 . Each of the elements of the internal hardware  430  is controlled by the application  450 . And, the virtual server  470  is connected to the application  450  and the hardware  430  to transceive data or commands. 
         [0226]      FIG. 13  is a block diagram of a PC type second terminal for decompression of compressed screen information in an operation control system according to a first embodiment of the present invention. 
         [0227]    Referring to  FIG. 13 , a virtual client  550  includes elements that display video information received from the first terminal  400  via a wire/wireless network device  515 . In this case, the elements include a client protocol  559 , a client video decoding unit  555 , a client audio decoding unit  556 , a client audio capture and encoding unit  557 , a client input device information unit  558  and the like, which are connected to an OS and hardware of a second terminal  500  via a client video output unit  551 , a client audio output unit  552 , a client audio input unit  553 , a client input processing unit  554  and the like, respectively. 
         [0228]    The virtual client  550  is connected to a video output device  511 , an audio output device  512 , an audio input device  513 , a keyboard/mouse  514  and the like of the second terminal  500 . 
         [0229]    The client video decoding unit  555  shown in  FIG. 13  decodes and decompresses the video information compressed and encoded by the server video capture and encoding unit  471  shown in  FIG. 12 . The decompression of the compressed video information follows a process reverse to the former process for compressing the video information. 
         [0230]    The client video decoding unit  555  performs entropy decoding on the received compressed video information and then determines whether the video information is unique video information, differential video information or image quality recovery video information using an identifier contained in the compressed video information. 
         [0231]    In case of determining the received video information as the unique video information using the identifier, the client video decoding unit  555  dequantizes low frequency information and middle frequency information of the unique video information and then synthesizes the dequantized low frequency information and the dequantized middle frequency information together. This synthesized video does not contain high frequency information and can be interpolated to output smooth reconstructed video information. 
         [0232]    In case of determining the received video information as the differential video information using the identifier, the client video decoding unit  555  generates quantized low and middle frequency information from adding different information of the low and middle frequency information and the previous video information together and then dequantizes the low and middle frequency information. The dequantized low and middle frequency information are then synthesized together. In case of the differential video information, high frequency information is not contained in the synthesized video. Therefore, interpolation is preferably performed. 
         [0233]    In case of determining the received video information as the image quality recovery video information using the identifier, the client video decoding unit  555  dequantizes high frequency information and then synthesizes the dequantized high frequency information with the reconstructed low and middle frequency information. Since the synthesized video in the process for reconstructing the image quality recovered vide information entirely contains the low frequency information, the middle frequency information and the high frequency information, it is unnecessary to perform the interpolation. 
         [0234]    The video information decompressed by the client video decoding unit  555  is forwarded to the video output unit  251  and is then displayed on the video output device  511  of the second terminal  500 . 
         [0235]    The client video decoding unit  555  reconstructs high-resolution intermediate information from high-resolution middle frequency information generated from the compression process. 
         [0236]    In this case, the reconstruction of the high-resolution middle frequency information can be expressed as Q 4  (M)=Q 4  (Q 2   −1  (Q 2 (M)))+X(M). In this case, Q 2   −1  (Q 2 (M)) refers to the result from processing the unique video information or the differential video information that is used. The reconstructed high-resolution intermediate information is synthesized with the reconstructed high frequency information and the like. 
         [0237]    The operation control system according to the present invention, as shown in  FIG. 12  and  FIG. 13 , is implemented by the combination of hardware and software. In particular, the operation control system is realized by the virtual server  470  loaded in the first terminal  400  and the virtual client  550  loaded in the second terminal  500 . 
         [0238]    The virtual server  470  and the virtual client  550  are connected to each other by the network device  415  of the first terminal  400  and the wire/wireless network device  515  of the second terminal  500  by wire/wireless connection. According to this connection, the virtual server  470  compresses the video information on the screen of the first terminal  400  and then transmits the compressed video information to the virtual client  550  of the second terminal  500 . Subsequently, the virtual client  550  delivers the video information received from the first terminal  400  to the video output device  511  by real time so that the delivered video information can be displayed on the video output device  511 . 
         [0239]      FIG. 14  shows one embodiment for video compression of the first terminal  400 , which is performed by the server video capture and encoding unit  471  of the virtual server  470 . 
         [0240]    Referring to  FIG. 14 , a video compression of the first terminal  100  according to one embodiment of the present invention includes a step of extracting low frequency information and middle frequency information, a video information variation analyzing step of determining a variation extent of current video information by comparing the current video information to previous video information based on the extracted low and middle frequency information, a step of generating unique video information, differential video information or image quality recovery video information by differentiating a presence of non-presence of information on a difference from a quantization target according to the variation extent of the current video information, and a step of encoding each of the generated video information. The video compression of the first terminal  400  according to one embodiment is explained in detail with reference to  FIG. 14  as follows. 
         [0241]    First of all, a step S 31  is the step of extracting low frequency information and middle frequency information from video information. A video of the first terminal is inputted as consecutive video information (e.g., frames). 
         [0242]    For this extraction, the inputted video information is resolved into low frequency (L) information and intermediate frequency (M) information. When the video information is resolved into the low frequency information and the middle frequency information, wavelet transform is used. Preferably, for low operation amount, Harr wavelet is used. In this step, high frequency (H) information does not need to be extracted from the corresponding video information. This is because a user of the first terminal may not attempt to read letters if such a video variation as animation/scroll and the like is severe. 
         [0243]    In the step S 31 , since the low frequency information and the middle frequency information has relatively low spatial resolution, the unique video information is reduced. Since the low frequency information and the middle frequency information are extracted from the video information, a compression ratio is high. The step S 31  performs an integer addition/subtraction operation only or performs an integer addition/subtraction operation and a logical operation only. 
         [0244]    A step S 32  is the step of analyzing a variation extent of current video information compared to previous video information. In this step, low frequency information and middle frequency information of previous video information are compared to low frequency information and middle frequency information of current video information, respectively. 
         [0245]    First of all, low frequency information is compared. A threshold for evaluating a variation extent between a pixel corresponding to low frequency information of previous video information and a pixel corresponding to low frequency information of current video information is preferentially determined. This threshold refers to an extent for recognizing that there is a variation. And, the threshold can be various selectable as 10%, 20%, 30%, 50%, etc. The number of pixels having the variation equal to or greater than the threshold between pixels is then calculated. 
         [0246]    Subsequently, middle frequency information is compared. It is analyzes whether a variation extent between a pixel corresponding to middle frequency information of previous video information and a pixel corresponding to middle frequency information of current video information deviates from the threshold. And, the number of pixels deviating from the threshold is calculated. 
         [0247]    In this case, a variation threshold of low frequency information is applicable to the threshold. And, a threshold can be differently set by considering a characteristic of the middle frequency information. 
         [0248]    The number of pixels deviating from the threshold range for the low frequency information and the number of pixels deviating from the threshold range for the middle frequency information are added together. 
         [0249]    In this case, according to how much a ratio is occupied in the total pixel number by the added number of pixels, the current video information can be determined as ‘total variation’, ‘partial variation’ or ‘no variation’. 
         [0250]    For instance, if the ratio of the number of pixels recognizable as having variations is equal to or greater than 50%, it is determined that the current video information has a considerable video variation by being compared to the previous video information. And, the variation extent of the current video information is determined as ‘total variation’. If the ratio of the number of pixels recognizable as having variations is 5%-50%, it is determined that the current video information has a partial video variation. And, the variation extent of the current video information is determined as ‘partial variation’. 
         [0251]    If the ratio of the number of pixels recognizable as having variations is smaller than 5%, it is determined that the current video information has no video variation by being compared to the previous video information. And, the variation extent of the current video information is determined as ‘no variation’. 
         [0252]    In this case, although the determination references of the number ratio are set to 50% and 5%, it is able to variously set the number ratio determination references to 70% and 10% or 50% and 0%, or the like. Instead of using the number ratio, it is able to use the numbers of 10, 20, 30 and the like as the determination references. 
         [0253]    A step S 33  is the step of generating unique video information by respectively quantizing low frequency information and middle frequency information if the current video information is determined as ‘total variation’. In this case, the unique video information refers to the video information that contains original video information intact. Specifically, the unique video information is the video information resulting from eliminating high frequency information from original video information. 
         [0254]    In this case, since low frequency information contains most important information, quantization for the low frequency information has highest resolution. Quantization for the intermediate information has resolution lower than that of the low frequency information. 
         [0255]    Steps S 34  and S 35  are the step of if the current video information is determined as ‘partial variation’, quantizing the low frequency information and the middle frequency information of the current video information (Q 1 (L), Q 2 (M)), respectively and the step of generating differential video information by comparing the quantized low frequency information and the quantized middle frequency information of the current video information to quantization results of low frequency information and middle frequency information of the previous video information, respectively. 
         [0256]    In this case, the differential video information refers to the video information generated from difference information between the current video information and the previous video information in the low frequency information and the middle frequency information. 
         [0257]    As can be observed from the step S 35 , the difference information in the low frequency information and the difference information in the middle frequency information can be expressed as D(L)=Q 1 (L)−Q 1 (L′) and D(M)=Q 2 (M)−Q 2 (M′), respectively. In this case, the D(L) indicates the difference information on the low frequency information and the D(M) indicates the difference information on the middle frequency information. The Q 1 (L) indicates a result from quantizing the low frequency information of the current video information. The Q 1 (M) indicates a result from quantizing the middle frequency information of the current video information. The Q 1 (L′) indicates a result from quantizing the low frequency information of the previous video information. And, the Q 1 (M′) indicates a result from quantizing the middle frequency information of the previous video information. 
         [0258]    In the step S 35 , quantization resolution of the low and middle frequency information is maintained equal to that of the low and middle frequency information in case of being determined as ‘total variation’. 
         [0259]    By finding the difference information in the steps S 34  and S 35 , a varying part is left as a meaningful value only. As a result, a considerable amount of data (non-varying part) is compressed in an encoding process. 
         [0260]    Steps S 36  and S 37  are the step of extracting high frequency information from the current video information if the current video information is determined as ‘no variation’ and the step of generating image quality recovery video information by quantizing (Q 3 (H)) the extracted high frequency information. 
         [0261]    The image quality recovery video information contains additional information for the image quality recovery only because the low frequency information and the middle frequency information were delivered in the previous step. By the image quality recovery video information, an image quality can be enhanced well enough to identify a small letter. 
         [0262]    Thus, the method of transmitting high frequency information is taken only if there is no video variation. This is because a user of the first terminal is not inconvenient to read letters when a video variation stops. In particular, this is the result in considering a user&#39;s habit in using the first terminal. 
         [0263]    In this case, although the high frequency information has high spatial resolution, its value is almost 0. Hence, considerable compression occurs in the course of entropy encoding. Moreover, since the high frequency information is a region insensitive to the eyes, a quantization process for lowest resolution is performed thereon. 
         [0264]    The unique video information, the differential video information and the image quality recovery video information generated from the steps S 33  to S 37  are entropy-encoded in a step S 50 . And, such an identifier as 0, 1, 2 and the like is given to each of the video information. 
         [0265]    The identifiers are transmitted to the virtual client of the second terminal by being respectively contained in the unique video information, the differential video information and the image quality recovery video information. If the compressed unique video information, differential video information and image quality recovery video information are decompressed by the virtual client  50  of the second terminal, a type of the transmitted video information can be identified by the corresponding identifier. 
         [0266]      FIG. 15  shows another embodiment of a first terminal video compression. 
         [0267]    Referring to  FIG. 15 , in the first terminal video compression according to another embodiment performed by the server video capture and encoding unit  471  of the virtual server  470 , the steps S 38  and S 39  in case of determining the current video information as ‘no variation’ in  FIG. 14  are further included. 
         [0268]    The step S 38  is the step of quantizing (Q 4 (M))) middle frequency information with quantization resolution higher than that of the middle frequency information of ‘total variation’ or ‘partial variation’. In particular, the step S 38  further enhances an image quality of the middle frequency information. 
         [0269]    The quantization result of the step S 38  is sent to the encoding step after the difference information and the quantization result of the middle frequency information of the ‘total variation’ or the ‘partial variation’ have been generated. 
         [0270]    As can be observed from the formula of ‘X(M)=Q 4 (M)−Q 4 (Q 2   −1 (Q 2 (M)))’ in the step S 39 , the high-resolution middle frequency difference information is generated in a manner of dequantizing the result of quantizing the middle frequency information with high resolution and the result of quantization of the middle frequency information of the ‘total variation’ or the ‘partial variation’ and a difference of a result from quantizing it with high resolution. 
         [0271]    The step S 39  is the process for further compressing the quantized result in the step S 38 . 
         [0272]      FIG. 16  shows a first terminal video compression according to a further embodiment of the present invention. 
         [0273]    Referring to  FIG. 16 , in the first terminal video compression according to a further embodiment performed by the server video capture and encoding unit  471  of the virtual server  470 , the steps S 40  and S 41  in case of determining the current video information as ‘no variation’ in  FIG. 14  and  FIG. 15  are further included. 
         [0274]    In  FIG. 16 , if current video information is determined as ‘no variation’, it is determined again whether the current video information may be determined as ‘partial information’. 
         [0275]    In the step S 40 , a prescribed number of pixels corresponding to each other among pixels of current and previous video information are sampled. In this case, the number of sampled pixels is determined in consideration of operation capability of the first terminal. For instance, 9, 12, 15, 16 or 20 pixels can be variously determined for each video information. 
         [0276]    In the step S 41 , pixels sampled in the current video information are compared to pixels sampled in the previous video information. In this case, the number of pixels exceeding a threshold between the pixels sampled in the current video information and the pixels sampled in the previous video information is equal to or greater than a prescribed number or a prescribed ratio, the current video information is re-determined as ‘partial variation’. 
         [0277]    In this case, the prescribed number of the comparison reference can be set to 1. And, the prescribed ratio can be variously set to 3%, 5%, 10% or the like. If it is determined as ‘partial variation’ in this step, the step S 34  is performed. If it is still determined as ‘no variation’, the step S 36  or S 38  is performed. 
         [0278]    In the following description, a process for decompressing a compressed video received from the first terminal by the virtual client of the second terminal is explained with reference to  FIG. 17  and  FIG. 18 . 
         [0279]    Embodiments shown in  FIG. 17  and  FIG. 18  correspond to a process reverse to that shown in  FIG. 14  and  FIG. 15 . Without detailed explanation, the decompression process shown in  FIG. 14  and  FIG. 15  is apparent to those skilled in the art, who understand the compression process. 
         [0280]      FIG. 17  shows one embodiment for decompressing the compressed video shown in  FIG. 14 . In particular, the embodiment shown in  FIG. 17  is performed by the client video decoding unit  555  of the virtual client  550  of the second terminal. 
         [0281]    Referring to  FIG. 17 , compressed data is entropy-decoded in a step S 61 . Subsequently, in a step S 62 , whether video information received from the first terminal is unique video information, differential video information or image quality recovery video information is determined using an identifier included in each of the video information. 
         [0282]    First of all, a case in which the received video information is determined as the unique video information in the step S 62 , quantized low and middle frequency information of the unique video information are dequantized in a step S 63 . 
         [0283]    Subsequently, in a step S 64 , the dequantized low frequency information and the dequantized middle frequency information are synthesized together. Since the synthesized video does not contain high frequency information, interpolation can be performed like a step S 65 . As a result of this interpolation, it is able to output smoother reconstructed video information. 
         [0284]    If the received video information is determined as the differential video information in the step S 62 , quantized low frequency information and quantized middle frequency information are generated from adding differences of the low and middle frequency information to the previous video information in a step S 66 . 
         [0285]    In a step S 67 , the low frequency information and the middle frequency information are dequantized. Subsequently, in a step S 68 , the dequantized low frequency information and the dequantized middle frequency information are synthesized together. Since high frequency information is not contained in the synthesized video in case of the differential video information, it is able to perform interpolation like a step S 69 . 
         [0286]    If the received video information is determined as the image quality recovery video information in the step S 62 , quantized high frequency information is dequantized in a step S 70 . Subsequently, in a step S 71 , the dequantized high frequency information and the already-reconstructed low and middle frequency information are synthesized together. Thus, as the process for reconstructing the image quality recovery video information includes the low, middle and high frequency information, it is unnecessary to perform the interpolation. 
         [0287]    Finally, the reconstructed video information processed in each of the above-described cases is sent to the video output unit  551  in a step S 80 . 
         [0288]      FIG. 18  shows another embodiment for decompressing the compressed video shown in  FIG. 15 . 
         [0289]    In  FIG. 18 , a process for reconstructing high resolution middle frequency information from the high resolution middle frequency difference information generated from the compressing process shown in  FIG. 15  is further included. 
         [0290]    Referring to  FIG. 18 , a quantization result of the high-resolution middle frequency is reconstructed by the formula of ‘Q 4 (M)=Q 4 (Q 2   −1 (Q 2 (M)))+X(M)’ in the step S 72 . 
         [0291]    In this case, Q 2   −1 (Q 2 (M)) uses a processing result of the unique video information or the differential video information. Subsequently, the high resolution middle frequency quantization result is dequantized in a step S 73  to reconstruct the high resolution middle frequency information. 
         [0292]    Thus, the video compression and decompression process of the first and second terminals according to the first embodiment of the present invention is explained in detail. 
         [0293]    In the following description, a data transmitting and receiving operation process and a communication connecting operation process between a first terminal and a second terminal in an operation control system according to embodiments of the present invention are explained in details. 
       Second Embodiment 
       [0294]    According to a second embodiment of the present invention, when screen information of a first terminal is displayed on a second terminal, content information contained in the screen information of the first terminal can be easily recognized in the second terminal. And, the content information of the first terminal can be freely used and edited in the second terminal. 
         [0295]    In the following description of the first to third embodiments of the present invention, assume that the first terminal of a mobile terminal type and the second terminal of a PC type are used. 
         [0296]    Of course, the above assumption is made to clarify the description of the first to third embodiments of the present invention. Alternatively, each of the first and second terminals according to the first to third embodiments of the present invention can have a mobile terminal type. Alternatively, each of the first and second terminals according to the first to third embodiments of the present invention can include a stationary terminal. 
         [0297]    Therefore, the first and second terminals according to the first to third embodiments of the present invention can include terminals capable of communication by including a screen display device and an input device. 
         [0298]    A first embodiment of the present invention is explained in detail with reference to  FIG. 19  as follows. 
         [0299]      FIG. 19  is a signal processing diagram for a data transceiving process between a first terminal  100  and a second terminal  200  in an operation control system according to a first embodiment of the present invention. 
         [0300]    Referring to  FIG. 19 , the controller  180  of the first terminal  100  checks whether at least one content information exists within screen information to be initially displayed on the display unit  151  [S 111 ]. 
         [0301]    In this case, the at least one content information can include a text, an image, a received message, contact information within a phonebook, an audio file, a photo file, a video file, a game file, schedule information, a document file, an electronic dictionary file, a calculator file, webpage address information and the like. 
         [0302]    In particular, the content information includes all data existing within a menu function of the first terminal  100 . And, the contact information can include a mobile phone number, name, home phone number and email address of a correspondent party, etc. 
         [0303]    In this case, if the at least one content information exists within the screen information to be displayed [S 112 ], the controller  180  generates first notification information announcing the content information via the screen information [S 113 ]. And, the controller  180  transmits the generated first notification information to the second terminal  200  via the communication unit  110  by having the generated first notification information included in the screen information to display [S 114 ]. 
         [0304]    In this case, the first notification information may be generated in form of a text indicating the content information, a 2- or 3-dimensional image, an icon, an animation, a watermark, a barcode or the like. 
         [0305]    In this case, the controller  180  transmits the screen information containing the first notification information to the second terminal  200  by compressing the screen information by the processes shown in  FIGS. 14 to 16 . 
         [0306]    In particular, the controller  180  is able to compress the screen information containing the first notification information therein using a video or still picture compression scheme. For example, the screen information can be compressed using such a video compression scheme as JPEG, PNP, MPEG, H.264, etc. 
         [0307]    Moreover, in case of transmitting audio information outputted from the audio output module  152  to the stationary terminal  200 , the controller  180  is able to compress the audio information using an audio compression scheme. For example, the audio information can be compressed using such an audio compression scheme as MP3, MP4, SBC, ADPCM, Ogg Vorbis, etc. 
         [0308]    In case of transmitting screen information containing first notification information compressed by the above process to the second terminal  200 , the controller  180  is able to transmit the screen information using a VDP standard protocol (video) and A2DP standard protocol (audio) of Bluetooth. 
         [0309]    A first notification information generating process and a first notification information transmitting process in the controller  180  are explained in detail with reference to  FIG. 20  and  FIG. 21  as follows. 
         [0310]      FIG. 20  and  FIG. 21  are diagrams for screen configurations to explain a process for a first terminal to generate first notification information according to a second embodiment of the present invention. 
         [0311]    Referring to (a) of  FIG. 20 , if schedule content information exists within a screen to display, the controller  180  of the mobile terminal  100  generates text type first notification information  10   a  notifying the schedule content information  10 , as shown in (b) of  FIG. 13 . the controller  180  is then able to transmit the text type first notification information  10   a  to the second terminal  200  by having the text type first notification information included in the screen information to display. 
         [0312]    In (b) of  FIG. 20 , shown is the screen information containing the text type first notification information  10   a  received by the second terminal  200  from the first terminal  100  that is displayed. 
         [0313]    In this case, the controller  180  of the first terminal is able to transmit the first notification information  10   a  in a manner of synthesizing or overlapping the first notification information  10   a  around a region on which the schedule information  10  is displayed. 
         [0314]    Alternatively, instead of displaying the schedule information  10 , the controller  180  of the first terminal  100  is able to transmit the first notification information  10   a  in a manner to synthesize or overlap the first notification information  10   a  with a region where the schedule information  10  is located only. 
         [0315]    Alternatively, the controller  180  of the first terminal  100  is able to transmit the first notification information  10   a  in a manner to synthesize or overlap the first notification information  10   a  within an indicator region of the screen information. 
         [0316]    Alternatively, the controller  180  of the first terminal  100 , as shown in (c) of  FIG. 20 , generates an icon type first notification information  10   b  notifying the schedule information  10  and is then able to transmit the generated icon type first notification information  10   b  to the second terminal  200  by having the icon type first notification information  10   b  included in the screen information to display. 
         [0317]    In this case, in (c) of  FIG. 20 , shown is the screen information, in which the icon type first notification information  10   b  received from the first terminal  100  by the second terminal  200  is included, that is displayed. 
         [0318]    The controller  180  of the first terminal  100  generates first notification information  10   c  notifying the schedule information  10  as a barcode type, as shown in (d) of  FIG. 20 , and is then able to transmit the generated barcode type first notification information  10   c  to the second terminal  200  by having it included in the screen information. 
         [0319]    Referring to (a) of  FIG. 21 , if webpage address content information  20  exists within a screen to display, the controller  180  of the first terminal  100  generates text type first notification information  20   a  notifying the webpage address content information  20 , as shown in (b) of  FIG. 21 , and is then able to transmit the text type second notification information  20   a  to the second terminal  200  by having it included in the screen information to display. 
         [0320]    In (b) of  FIG. 21 , shown is the screen information containing the text type first notification information  20   a  received by the second terminal  200  from the first terminal  100  that is displayed. 
         [0321]    In this case, the controller  180  of the first terminal is able to transmit the first notification information  20   a  in a manner to synthesize or overlap the first notification information  20   a  around a region on which the webpage address content information  20  is displayed. 
         [0322]    Alternatively, instead of displaying the webpage address content information  20 , the controller  180  of the first terminal  100  is able to transmit the first notification information  20   a  in a manner to synthesize or overlap the first notification information  20   a  with a region where the webpage address content information  20  is located only. 
         [0323]    Alternatively, the controller  180  of the first terminal  100  is able to transmit the first notification information  20   a  in a manner to synthesize or overlap the first notification information  20   a  within an indicator region of the screen to display. 
         [0324]    Alternatively, the controller  180  of the first terminal  100 , as shown in (c) of  FIG. 21 , generates icon type first notification information  20   b  notifying the webpage address content information  20  and is then able to transmit the generated icon type first notification information  20   b  to the second terminal  200  by having the icon type first notification information  20   b  included in the screen information to display. 
         [0325]    The controller  180  of the first terminal  100  generates first notification information  20   c  notifying the webpage address content information  20  as a barcode type, as shown in (d) of  FIG. 21 , and is then able to transmit the generated barcode type first notification information  20   c  to the second terminal  200  by having it included in the screen information to display. 
         [0326]    Meanwhile, referring back to  FIG. 19 , if the screen information containing the first notification information is received from the first terminal  100  via the communication unit  210 , the controller  270  of the second terminal  200  displays the received screen information on the display unit  260  [S 115 ]. 
         [0327]    In particular, the controller  270  of the second terminal  200  decodes the screen information containing the first notification information by the above described process shown in  FIG. 17  or  FIG. 18 , and is then able to display the decoded screen information on the display unit  260 . 
         [0328]    Namely, the controller  270  of the second terminal  200  is able to decompress the compression of the received screen information using a video or still picture decoding scheme. 
         [0329]    The compression of the screen information can be decompressed using such a video decoding scheme as JPEG, PNP, MPEG, H.264 and the like. The decompressed screen information can be displayed on the display unit  260 . 
         [0330]    In case of receiving audio information from the first terminal  100 , the controller  270  of the second terminal  200  is able to decompress the compression of the received audio information using an audio decoding scheme. 
         [0331]    The compression of the audio information is decompressed using such an audio decompression scheme as MP3, MP4, SBC, ADPCM, Ogg Vorbis and the like. The decompressed audio information is outputted to the speaker  240  and the decompressed screen information is displayed on the display unit  260 . 
         [0332]    In this case, if the first notification information is selected from the screen information via the input unit  220  or the touchscreen type display unit  260  [S 116 ], the controller  270  of the second terminal  200  executes a function of the content information corresponding to the first notification information [S 117 ]. 
         [0333]    In the following description, a process for the controller  270  of the second terminal  200  to execute a function of content information corresponding to first notification information is explained in detail. 
         [0334]    First of all, if the first notification information is selected from the screen, the controller  270  of the second terminal  200  generates a signal for requesting an execution of a content corresponding to the first notification information and then transmits the generated request signal to the communication unit  11  of the first terminal  100  via the communication unit  210 . 
         [0335]    In the content execution request signal, information indicating a display location of the first notification information selected on the screen information can be included. In particular, the controller  270  obtains the display location of the selected notification information on the screen information and is then able to transmit the request signal including the obtained display location information of the first notification information to the first terminal  100 . 
         [0336]    In case of receiving the request signal via the communication unit  110 , the controller  180  of the first terminal  100  executes content information corresponding to the first notification information by driving an application and then transmits execution screen information of the content information to the second terminal  200  via the communication unit  110 . 
         [0337]    In particular, the controller  180  obtains the location information of the first notification information included in the received request signal. If the first notification information exists at the obtained location on a current screen, the controller  180  executes the content information corresponding to the first notification information and is then able to transmit the execution screen information of the content information to the second terminal  200 . 
         [0338]    In case of receiving the execution screen information of the content information from the first terminal  100 , the controller  270  of the second terminal  200  displays the received execution screen information on the screen of the display unit  260 . 
         [0339]    For instance, if the barcode type first notification information  10   c  shown in (d) of  FIG. 20  is selected in the second terminal  200 , the first terminal  100  searches the memory  160  for a schedule corresponding to the first notification information  10   c , executes it on the screen of the display unit  151 , and then transmits the schedule screen to the second terminal  200 . 
         [0340]    Moreover, if the icon type first notification information  20   b  shown in (c) of  FIG. 21  is selected in the second terminal  200 , the first terminal  100  accesses a webpage corresponding to the first notification information  20   b  and then transmits the accessed webpage screen to the second terminal  200 . 
         [0341]    Meanwhile, in case of receiving the request signal via the communication unit  110 , the controller  180  of the first terminal  100  does not execute the content information corresponding to the first notification information on the screen of the display unit  151  but is able to directly transmit a content file corresponding to the first notification information to the second terminal  200 . 
         [0342]    Moreover, while screen information containing the first notification information is displayed on the display unit  151 , if the first notification information is selected by a user, the controller  180  of the first terminal  100  is able to transmit a content file corresponding to the first notification information to the second terminal  200  without a request made by the second terminal  200 . 
       Third Embodiment 
       [0343]    In the second embodiment of the present invention, while a user of the second terminal  200  is using screen information containing first notification information, if such an event as a call, a message reception and the like occurs in a first terminal  100 , a screen containing the first notification information may be switched to a screen of the event occurring in the first terminal  100  irrespective of intention of the user of the second terminal  200 . 
         [0344]    To overcome such an inconvenience of the second embodiment, according to a third embodiment of the present invention, while a user of a second terminal  200  is using the screen information, if an event occurs in a first terminal  100 , the occurrence of the event of the first terminal  100  is indicated on a screen of the second terminal  200  using second notification information notifying the even occurrence. After the user of the second terminal  200  has completed the use of the screen information, an event relevant screen can be displayed. 
         [0345]    An operation process according to a third embodiment of the present invention is explained in detail with reference to  FIG. 22  as follows. 
         [0346]      FIG. 22  is a signal processing diagram for a data transceiving process between a first terminal and a second terminal according to a third embodiment of the present invention. 
         [0347]    Referring to  FIG. 22 , an operation process including steps S 114  to S 117  is identical to that shown in  FIG. 19 . 
         [0348]    If a specific event occurs in the first terminal  100  [S 118 ], the controller  180  of the first terminal  100  generates second notification information indicating the occurring event via the communication unit  110 , displays the generated second notification information on a current screen, and then transmits the generated second notification information to the second terminal  200 , instead of transmitting screen information corresponding to the occurring event to the second terminal  200  [S 119 ]. In this case, the event can include one of a call, a message reception, an alarm output and the like. 
         [0349]    Moreover, the second notification information can be generated as one of a text, an image, an icon, an animation, a watermark and a barcode to indicate the occurring event. 
         [0350]    Meanwhile, the controller  270  of the second terminal  200  displays the second notification information received from the first terminal  100  on the screen having the first notification information contained therein [S 120 ]. 
         [0351]    In this case, the controller  270  of the second terminal  200  can display the second notification information by having the second notification information synthesized within or overlapped with the screen having the first notification information contained therein. 
         [0352]    Moreover, the controller  270  of the second terminal  200  is able to display the second notification information within an indicator region of the screen containing the first notification information therein. 
         [0353]    In this case, if a user of the second terminal  200  selects the second notification information by manipulating the input unit  220  [S 121 ], the controller  270  generates a signal for requesting an event relevant screen corresponding to the selected second notification information and then transmits the generated event relevant screen request signal to the first terminal  100  via the communication unit  210  [S 122 ]. 
         [0354]    In this case, location information of the second notification information located on the screen is included in the event relevant screen request signal. 
         [0355]    In particular, the controller  270  obtains the location of the selected second notification information at the screen and then transmits a request signal containing the obtained location information of the second notification information to the first terminal  100 . 
         [0356]    Subsequently, if the event relevant screen request signal is received from the second terminal  200 , the controller  180  of the first terminal  100  switches a current screen of the display module  151  to the occurring event relevant screen and then transmits the event relevant screen information to the second terminal  200  [S 123 ]. 
         [0357]    In particular, the controller  180  obtains location information of the second notification information included in the received request signal. If the second notification information exists at the obtained location on the current screen, the controller  180  switches the current screen to an event screen corresponding to the second notification information and then transmits the switched event screen information to the second terminal  200 . 
         [0358]    In case of receiving the event relevant screen information from the first terminal  100 , the controller  270  of the second terminal  200  switches the screen containing the first notification information to the received event relevant screen [S 124 ]. 
         [0359]    Moreover, if the event ends, the controller  180  of the first terminal  100  transmits the screen information prior to the event occurrence to the second terminal  200  via the communication unit  110 . Subsequently, the second terminal  200  is able to return to the screen prior to the event occurrence from the event relevant screen. 
         [0360]    Operations of the steps S 118  to S 124  are explained in detail with reference to  FIG. 23  and  FIG. 24  as follows. 
         [0361]      FIG. 23  and  FIG. 24  are diagrams of screen configurations for explaining a process for generating and displaying second notification information for a first terminal to announce an event occurrence according to a third embodiment of the present invention. 
         [0362]    First of all, (a) of  FIG. 23  shows that an event occurring in the step S 118  is a call event  30 . 
         [0363]    If the call event  30  occurs, the controller  180  of the first terminal  100  generates second notification information of an icon type  30   a  to indicate the call event  30  and then transmits the generated second notification information of the icon type  30   a , as shown in (b) of  FIG. 23 , to the second terminal  200 . 
         [0364]    While displaying the screen containing the first notification information  10   a , the second terminal  200  displays the received notification information  30   a  on the screen if the second notification information  30   a  indicating the call event  30  is received from the first terminal  100 . 
         [0365]    In this case, if the second notification information  30   a  is selected via the input unit  220 , the controller  270  of the second terminal  200  generates a signal for requesting a screen relevant to the call event  30  corresponding to the second notification information  30   a  and then transmits the generated request signal to the first terminal  100  via the communication unit  210 . 
         [0366]    If the request signal is received from the second terminal  200 , the controller  180  of the first terminal  100  switches a current screen of the display unit  151  to the screen relevant to the call event  30  and then transmits screen information relevant to the call event  30  to the second terminal  200 . 
         [0367]    In case of receiving the screen information relevant to the call event  30  via the communication unit  210 , the controller  270  of the second terminal  200  switches the screen containing the first notification information  10   b  displayed on the display unit  260 , as shown in (b) of  FIG. 23 , to the call event relevant screen  30   b , as shown in (c) of  FIG. 23 . 
         [0368]    And, (a) of  FIG. 24  shows that the event occurring in the step S 118  is a message reception event  40 . 
         [0369]    If the message reception event  40  occurs, the controller  180  of the first terminal  100  generates second notification information of an icon type  40   a  to indicate the message reception event  40  and is then able to transmit the generated second notification information of the icon type  40   a , as shown in (b) of  FIG. 24 , to the second terminal  200 . 
         [0370]    While displaying the screen containing the first notification information  20   a , if the second notification information  40   a  indicating the message reception event  40  is received from the first terminal  100 , the second terminal  200  displays the received notification information  40   a  on the screen containing the first notification information  20   a.    
         [0371]    In this case, if the second notification information  40   a  is selected via the input unit  220 , the controller  270  of the second terminal  200  generates a signal for requesting a screen relevant to the message reception event  40  corresponding to the second notification information  40   a  and then transmits the generated message reception event relevant request signal to the first terminal  100  via the communication unit  210 . 
         [0372]    If the message reception event relevant screen request signal is received from the second terminal  200 , the controller  180  of the first terminal  100  switches a current screen of the display unit  151  to the screen relevant to the message reception event  40  and then transmits screen information relevant to the message reception event  40  to the second terminal  200 . 
         [0373]    In case of receiving the screen information relevant to the message reception event  40  via the communication unit  210 , the controller  270  of the second terminal  200  switches the screen containing the first notification information  20   a  displayed on the display unit  260 , as shown in (b) of  FIG. 24 , to the message reception event relevant screen  40   b , as shown in (c) of  FIG. 24 . 
       Fourth Embodiment 
       [0374]    In case that a plurality of homogeneous or heterogeneous content information exist within a screen of a first terminal  100 , the object of a fourth embodiment of the present invention is to provide a function for enabling a second terminal  200  to operate each of the content information. 
         [0375]      FIG. 25  is a signal processing diagram for a process for a second terminal to access homogeneous content information of a first terminal according to a fourth embodiment of the present invention. 
         [0376]    And,  FIG. 26  is a diagram of a screen configuration of a process for a second terminal to access homogeneous content information of a first terminal according to a fourth embodiment of the present invention. 
         [0377]    Referring to  FIG. 25  and  FIG. 26 , if a first content information  51   a  and a second content information  52   a , which are homogenous, exist within a screen to display, the controller  180  of the first terminal  100  generates a first notification information  51   b  indicating the homogenous first content information  51   a  and a second notification information  52   b  indicating the homogenous second content information  52   a  and then transmits the generated first and second notification information  51   b  and  52   b  to the second terminal  200  by having the generated first and second notification information  51   b  and  52   b  included in the screen information to display [S 211 ] [(a) of  FIG. 26 ]. 
         [0378]    In (a) of  FIG. 26 , shown is that the homogenous first and second content information  51   a  and  52   a  are internet accessible webpage addresses. And, the first and second notification information  51   b  and  52   b  indicating the webpage addresses are shown as icons, respectively. 
         [0379]    Yet, the present invention non-limits the types of the first and second content information  51   a  and  52   a  and the shapes (or representation) of the first and second notification information  51   b  and  52   b.    
         [0380]    The controller  270  of the second terminal  200  displays the screen information containing the first and second notification information  51   b  and  52   b  received from the first terminal  100  via the communication unit  210  on the display unit  260  [S 212 ] [(b) of  FIG. 26 ]. 
         [0381]    If a user of the second terminal  200  selects the first notification information  51   b  from the first notification information  51   b  and the second notification information  52   b  [S 213 ], the controller  270  of the second terminal  200  displays menus  53   a ,  53   b ,  53   c  and  53   d  for executing functions of the first content information  51   a  corresponding to the selected first notification information  51   b , as shown in (c) of  FIG. 26 , on the display unit  260  [S 214 ]. 
         [0382]    If the first menu  53   a  (‘e 1  access’) is selected from the menus  53   a ,  53   b ,  53   c  and  53   d  shown in (c) of  FIG. 26  [S 215 ], the controller  270  of the second terminal  200  generates a signal for a function execution screen request of the first content information  51   a  corresponding to the first menu  53   a  (‘e 1  access’) and then transmits the generated request signal to the first terminal  100  via the communication unit  210  [S 216 ]. 
         [0383]    Subsequently, the controller  180  of the first terminal  100  controls the communication unit  110  to access the first content information  51   a , i.e., a webpage address corresponding to ‘http://www.abc.com’ and then transmits the screen information  54  of the accessed webpage to the second terminal  200  [S 217 ]. If so, the controller  270  of the second terminal  200  displays the webpage screen information  54  received from the first terminal  100  on the display unit  260  [S 218 ]. 
         [0384]    While the webpage screen information  54  in the step S 218  is being displayed, if the second menu  53   b  (‘e 1  access disconnect’) is selected from the menus  53   a ,  53   b ,  53   c  and  53   d  shown in (c) of  FIG. 26 , the controller  270  of the second terminal  200  stops displaying the webpage screen information  54  and is then able to switch to a current screen to a screen according to (b) of  FIG. 26 . 
         [0385]    While the webpage screen information  54  in the step S 218  is being displayed, if the third menu  53   c  (‘store’) is selected from the menus  53   a ,  53   b ,  53   c  and  53   d  shown in (c) of  FIG. 26 , the controller  270  of the second terminal  200  is able to control the webpage screen information  54  to be stored as an image in the memory  240 . 
         [0386]      FIG. 27  is a signal processing diagram for a process for a second terminal to access heterogeneous content information of a first terminal according to a fourth embodiment of the present invention. 
         [0387]      FIG. 28  is a diagram of a screen configuration of a process for a second terminal to access heterogeneous content information of a first terminal according to a fourth embodiment of the present invention. 
         [0388]    Referring to  FIG. 27  and  FIG. 28 , if first to third content information  61   a ,  62   a  and  63   a , which are heterogeneous (i.e., different in kind), exist within a screen to display, the controller  180  of the first terminal  100  generates first to third notification information  61   b ,  62   b  and  63   b  notifying the heterogeneous first to third content information  61   a ,  62   a  and  63   a  and then transmits them to the second terminal  200  by having the generated first to third notification information  61   b ,  62   b  and  63   b  included in the screen information to display [S 301 ] [(a) of  FIG. 28 ]. 
         [0389]    In (a) of  FIG. 28 , shown is that the heterogeneous first content information  61   a  is an image file, the second content information  62   a  is a document file, and the third content information  62   c  is a phonebook. Moreover, the first to third notification information  61   b ,  62   b  and  63   b  respectively indicating the first to third content information  61   a ,  62   a  and  63   a  have icon shapes, respectively. 
         [0390]    Yet, the present invention non-limits the types of the first to third content information  61   a ,  62   a  and  63   a  and the shapes (or representation) of the first to third notification information  61   b ,  62   b  and  63   b.    
         [0391]    The controller  270  of the second terminal  200  displays the screen information containing the first to third notification information  61   b ,  62   b  and  63   b  received from the first terminal  100  via the communication unit  210  on the display unit  260  [S 302 ] [(b) of  FIG. 28 ]. 
         [0392]    In this case, the controller  270  of the second terminal  200  displays menus  64  for executing functions of the first to third content information  61   a ,  62   a  and  63   a  corresponding to the first to third notification information  61   b ,  62   b  and  63   b , as shown in (b) of  FIG. 28 , on the display unit  260  [S 303 ]. 
         [0393]    If a user of the second terminal  200  selects the third menu  64   c  (‘view phonebook’) from the menus  64  [S 304 ], the controller  270  of the second terminal  200  generates a signal for requesting a function execution screen of the third menu  64   c  (‘view phonebook’) and then transmits the generated request signal to the first terminal  100  via the communication unit  210  [S 305 ]. 
         [0394]    Subsequently, the controller  180  of the first terminal  100  executes the third content information  63   a , i.e., ‘phonebook’ and then transmits the screen information  63   c  of the executed phonebook  63   a  to the second terminal  200  [S 306 ]. 
         [0395]    If so, the controller  270  of the second terminal  200  displays the phonebook screen information  63   c  received from the first terminal  100  on the display unit  260  [S 307 ]. 
         [0396]    In this case, if the phonebook screen information  63   c  in the step S 307  is displayed, the controller  270  of the second terminal  200  is able to display submenus  64   c   1 ,  64   c   2 ,  64   c   3  and  64   c   4  for the function execution of the ‘phonebook’, as shown in (c) of  FIG. 28 , on one region of the phonebook screen information  63   c.    
         [0397]    After the user of the second terminal  200  has selected contact information (‘1. TOM’) from the phonebook screen information  63   c , if the user of the second terminal  200  selects the first submenu  64   c   1  (‘call connect’) from the submenus  64   c   1 ,  64   c   2 ,  64   c   3  and  64   c   4 , the controller  270  of the second terminal  200  generates a signal for indicating that the contact information (‘1. TOM’) and the first submenu  64   c   1  (‘call connect’) are selected and then transmits the generated signal to the first terminal  100  via the communication unit  210 . 
         [0398]    If so, the controller  180  of the first terminal  100  connects a call to a phone number of the selected contact information (‘1. TOM’) by controlling the communication unit  110  according to the signal received from the second terminal and then transmits the call connected status screen to the second terminal  200 . 
         [0399]    Moreover, after the user of the second terminal  200  has selected contact information (‘1. TOM’) from the phonebook screen information  63   c , if the user of the second terminal  200  selects the second submenu  64   c   2  (‘message send’) from the submenus  64   c   1 ,  64   c   2 ,  64   c   3  and  64   c   4 , the controller  270  of the second terminal  200  generates a signal for indicating that the contact information (‘1. TOM’) and the second submenu  64   c   2  (‘message send’) are selected and then transmits the generated signal to the first terminal  100  via the communication unit  210 . 
         [0400]    If so, the controller  180  of the first terminal  100  transmits an input window for a message to be sent to the phone number of the selected contact information (‘1. TOM’) to the second terminal  200  by controlling the communication unit  110  according to the signal received from the second terminal  200 . 
         [0401]    The second terminal  200  displays the message input window received from the first terminal  100  and then transmits a message content written through the message input window to the first terminal  100 . 
         [0402]    Subsequently, the controller  180  of first terminal  100  transmits the message content received from the second terminal  200  to the selected contact information (‘1. TOM’). 
         [0403]    Moreover, the second terminal  200  selects the third submenu  64   c   3  or the fourth submenu  64   c   4  from the submenus  64   c   1 ,  64   c   2 ,  64   c   3  and  64   c   4 , and is then able to edit or delete phone numbers and the like within the corresponding phonebook. 
       Fifth Embodiment 
       [0404]    The object of a fifth embodiment of the present invention is to provide a function of automatically connecting a communication without a separate user&#39;s manipulation when the communication is connected between a first terminal and a second terminal. 
         [0405]    In particular, a fifth embodiment of the present invention relates to a process for automatically connecting a communication in-between using short-range communication or RFID. 
         [0406]    In the following description of a fifth embodiment of the present invention, assume that a first terminal is a mobile terminal type, assume that a second terminal is a PC type, and assume that the second terminal automatically searches for the first terminal to connect a (or establish) communication. 
         [0407]    A process for automatically connecting a communication using short-range communication according to the present invention is explained with reference to  FIG. 29  and  FIG. 30  as follows. 
         [0408]      FIG. 29  is a flowchart of a process for a second terminal to automatically connect a (or establish) communication with a first terminal using a short-range communication according to a fifth embodiment of the present invention. 
         [0409]    And,  FIG. 30  is a diagram of a screen configuration of a process for a second terminal to set a time period of searching for a first terminal periodically according to a fifth embodiment of the present invention. 
         [0410]    Referring to  FIG. 29  and  FIG. 30 , if a user selects a function for automatically searching for the first terminal  100  around the second terminal  200  and connecting a communication, the controller  270  of the second terminal  200  displays an access authentication device information list  71  previously provided to the memory  230  on the display unit  260  [S 401 ] [(a) of  FIG. 30 ]. 
         [0411]    In this case, the access authentication device information list  71  refers to a device information list of external devices having been connected to the second terminal  200  for communications through authentication processes. 
         [0412]    If the first terminal (TX 0015 )  100  to automatically access is selected from the access authentication device information list  71  [S 402 ] [(a) of  FIG. 30 ], the controller  270  of the second terminal  200  displays a window  72  for setting a time period for searching for the selected first terminal (TX 0015 ) on the display unit [S 403 ] [(b) of  FIG. 30 ]. 
         [0413]    If a user sets up the time period (5 minutes) through the time period setting window  72  [S 404 ] [(b) of  FIG. 30 ], the controller  270  of the second terminal  200  attempts the search and access of the first terminal (TX 0015 )  100  by the set time period (5 minutes) by controlling the communication unit  210  [S 405 ] [(c) of  FIG. 30 ]. 
         [0414]    If the access to the first terminal (TX 0015 )  100  is successful [S 406 ], the controller  270  of the second terminal  200  connects the communication with the first terminal (TX 0015 )  100 . The controller  270  of the second terminal  200  receives the screen information of the aforesaid first to fourth embodiments from the first terminal (TX 0015 )  100  and then displays the received screen information [S 407 ]. 
         [0415]    On the contrary, if the access to the first terminal (TX 0015 )  100  fails, the controller  270  of the second terminal  200  stands by during the set time period and then tries the access again [S 408 ]. 
         [0416]      FIG. 31  is a diagram of a screen configuration of a process for a second terminal to reset a time period for searching for a first terminal periodically according to a fifth embodiment of the present invention. 
         [0417]    Referring to  FIG. 31 , if the communication with the first terminal (TX 0015 )  100  is connected by the process shown in  FIG. 29  and  FIG. 30 , the second terminal  200  receives the screen information according to the first to third embodiments from the first terminal (TX 0015 )  100  and then displays the received screen information. Moreover, the second terminal  200  displays notification information  73  indicating the time period set up in  FIG. 29  and  FIG. 30  on the screen information [(a) of  FIG. 31 ]. 
         [0418]    If a user selects the notification information  73 , the controller  270  of the second terminal  200  recognizes that it is to change the time period set in  FIG. 29  and  FIG. 30  and then re-displays the time period setting window  72  shown in (b) of  FIG. 30  [(b) of  FIG. 31 ]. 
         [0419]    If the user changes the time period (10 minutes) via the time period setting window  72 , the controller  270  of the second terminal  200  tries the search and access of the first terminal (TX 0015 )  100  by the changed time period (10 minutes) by controlling the communication unit  210  [(c) of  FIG. 31 ]. 
         [0420]      FIG. 32  is a flowchart of a process for a second terminal to automatically connect a (or establish) communication with a first terminal using an RFID according to a fifth embodiment of the present invention. 
         [0421]    And,  FIG. 33  is a diagram of a screen configuration of a process for a second terminal to automatically connect a (or establish) communication with a first terminal using an RFID according to a fifth embodiment of the present invention. 
         [0422]    Referring to  FIG. 32  and  FIG. 33 , the controller  270  of the second terminal  200  drives the RFID reader  271  for the communication connection with the first terminal [S 501 ] and then detects whether the first terminal  100  having the RFID tag  182  attached thereto is located around the second terminal  200  through the RFID reader  271  [S 502 ]. 
         [0423]    If the first terminal  100  having the RFID tag  182  attached thereto exists around the second terminal  200 , the controller  270  of the second terminal  200  reads device information of the first terminal  100  stored in the RFID tag  182  through the RFID reader  271  [S 503 ]. 
         [0424]    The controller  270  checks whether the device information of the first terminal  100  read through the RFID reader  271  exists within the access authentication device information list stored in the memory  230  [S 504 ]. If the corresponding information exists in the list [S 505 ], the controller  270  of the second terminal  200  connects the communication with the first terminal  100  using the read device information of the first terminal  100  [S 506 ]. 
       Sixth Embodiment 
       [0425]    The object of a sixth embodiment of the present invention is to provide a function of extending a use time of a terminal by preventing unnecessary power consumption. In particular, while a communication is connected between a first terminal and a second terminal, if an operational status of a screen, audio, key input or the like fails to vary for a preset period of time, the communication between the first terminal and the second terminal is disconnected. 
         [0426]    In the following description of a sixth embodiment of the present invention, assume that a first terminal is a mobile terminal type, assume that a second terminal is a PC type, and assume that the second terminal automatically searches for the first terminal to connect a (or establish) communication. 
         [0427]    A process for a second terminal to perform a disconnecting/re-connecting operation of a communication with on a first terminal is explained with reference to  FIGS. 34 to 38  as follows. 
         [0428]      FIG. 34  is a flowchart of a process for a second terminal to perform disconnection and reconnection operations of communications with a first terminal according to a sixth embodiment of the present invention. 
         [0429]      FIG. 35  is a diagram of a screen configuration of a process for a second terminal to perform disconnection and reconnection of communications with a first terminal according to a sixth embodiment of the present invention. 
         [0430]      FIG. 36  is a diagram of a screen configuration of a process for a second terminal to perform disconnection of a communication with a first terminal according to a sixth embodiment of the present invention. 
         [0431]    And,  FIG. 37  and  FIG. 38  are diagrams of screen configurations for a process for a second terminal to inform a user of disconnected and reconnected statuses of communications with a first terminal according to a sixth embodiment of the present invention. 
         [0432]    Referring to  FIGS. 34 to 38 , if a communication is connected to the first terminal  100  according to the aforesaid fourth embodiment [S 601 ], the controller  270  of the second terminal  200  receives data containing screen information  510  from the first terminal via the communication unit  210  and then displays the received screen information  510  on a screen of the display unit  260  [S 602 ] [(a) of  FIG. 35 ]. 
         [0433]    In this case, the data received from the first terminal  100  can contain audio information and a key signal having been inputted to the first terminal  100  as well as the screen information  510 . 
         [0434]    Subsequently, the controller  270  of the second terminal  200  detects whether an operational state of the second terminal  200  is changed during a preset duration [S 603 ]. 
         [0435]    In particular, the controller  270  of the second terminal  200  detects whether the operational state of the second terminal  200  maintains an inactive state. 
         [0436]    In this case, the inactive state refers to a state in which the second terminal  200  fails to receive new screen information or new audio information from the first terminal  100  or a state in which the second terminal  200  does not transmit a key signal for remotely controlling an operation of the first terminal  100  to the first terminal  100 . 
         [0437]    And, the duration for detecting the operational state change is variously settable by a user. In particular, the controller  270  provides a user with a variously settable menu of the preset duration. The user is then able to change the duration through this menu. 
         [0438]    Meanwhile, if the operational state of the second terminal  200  is not changed for the preset duration [S 604 ], the controller  270  recognizes that the user does not use the remote control communication with the first terminal  100  according to the present invention and then disconnects the communication with the first terminal  100  by controlling the communication unit  210  [S 605 ] [(b) of  FIG. 35 ]. 
         [0439]    In particular, if new screen information or new audio information is not received from the first terminal  100  for the preset duration or a key signal for controlling the operation of the first terminal  100  remotely is not transmitted, the controller  270  disconnects the communication with the first terminal  100  by controlling the communication unit  210 . 
         [0440]    In this case, if the operational state of the second terminal  200  is not changed for the preset duration, as shown in  FIG. 36 , the controller  270  displays a selection window  82  for selecting a disconnection of a communication with the first terminal  100  on the display unit  260  [(a) of  FIG. 36 ]. If the disconnection of communication with the first terminal  100  is selected from the selection window  82 , the controller  270  is able to disconnect the communication with the first terminal [(b) of  FIG. 36 ]. 
         [0441]    If the communication with the first terminal  100  is disconnected, as shown in (a) of  FIG. 37 , the controller  270  is able to output audio data  82  for announcing the disconnected communication to the speaker  240 . 
         [0442]    If the communication with the first terminal  100  is disconnected, as shown in (a) of  FIG. 38 , the controller  270  is able to display notification information  85  for announcing the disconnected communication on the screen of the display unit  260 . 
         [0443]    In this case, if a user selects the notification information  85 , as shown in (a) of  FIG. 38 , the controller  270  is able to reconnect the communication with the first terminal  100  by controlling the communication unit  210 , as shown in (b) of  FIG. 38 . 
         [0444]    If the communication with the first terminal  100  is disconnected, the user is unable to remotely control the first terminal  100 . Hence, in order to save the power of the second terminal  200 , the controller  270  reduces screen brightness of the display unit  260  into a level lower than a preset brightness level or is able to turn off the display unit  260 . 
         [0445]    Meanwhile, while the communication with the first terminal  100  is disconnected, the controller  270  redetects whether the operational state of the second terminal  200  is changed [S 606 ]. 
         [0446]    While the communication with the first terminal  100  is disconnected, if the operational state of the second terminal  200  is changed [S 607 ], the controller  270  reconnects the communication with the first terminal  100  by making a request for a communication reconnection to the first terminal  100  via the communication unit  210  [S 608 ] [(c) of  FIG. 35 ]. 
         [0447]    In particular, while the communication with the first terminal  100  is disconnected, if new screen information or new audio information is received from the first terminal  100  or a key signal for controlling the operation of the first terminal  100  remotely is transmitted, the controller  270  reconnects the communication with the first terminal  100  by controlling the communication unit  210 . 
         [0448]    In this case, referring to (b) of  FIG. 37 , if the communication with the first terminal  100  is reconnected, the controller is able to output audio data  84  for announcing the reconnected communication to the speaker  240 . 
         [0449]    If the communication with the first terminal  100  is reconnected, as shown in (b) of  FIG. 38 , the controller  270  is able to display notification information  86  for announcing the reconnected communication on the screen of the display unit  260 . 
         [0450]    If the communication with the first terminal  100  is reconnected, the controller  270  drives the display unit  260  or reconstructs the reduced screen brightness of the display unit  260  into an initial brightness level. 
         [0451]      FIG. 39  is a flowchart of a process for a first terminal to perform disconnection and reconnection operations of communications with a second terminal according to a sixth embodiment of the present invention. 
         [0452]    Referring to  FIG. 39 , if a communication with the second terminal  200  is connected [S 701 ], the controller  180  of the first terminal  100  transmits data containing screen information to the second terminal  200  via the communication unit  110  [S 702 ]. 
         [0453]    If the communication is connected between the first terminal  100  and the second terminal  200 , a display screen of the display unit  100  of the first terminal  100  is identical to that of the display unit  250  of the second terminal  200 . And, a user of the first terminal  100  views the display screen of the first terminal  100  via the screen of the display unit  260  of the second terminal  200 . 
         [0454]    Hence, according to the sixth embodiment of the present invention, in order to prevent the unnecessary consumption of the power of the first terminal  100 , if the communication with the second terminal  200  is connected, the controller  180  of the first terminal  100  reduces a screen brightness of the display unit  151  into a level lower than a preset brightness level or is able to turn off the display unit  151 . 
         [0455]    Moreover, according to the sixth embodiment of the present invention, in order to prevent the unnecessary consumption of the power of the first terminal  100 , if the communication with the second terminal  200  is connected, the controller  180  of the first terminal  100  reduces a brightness of a backlight, which applies light to the user input unit  130 , into a level lower than a preset brightness level or is able to turn off the backlight. 
         [0456]    Meanwhile, the controller  180  detects whether an operational state of the first terminal  100  is changed for (or during) a preset duration [S 703 ]. 
         [0457]    In particular, the controller  180  of the first terminal  100  detects whether the operational state of the first terminal  100  maintains an inactive state. 
         [0458]    In this case, the inactive state refers to a state in which the first terminal  100  fails to transmit new screen information or new audio information to the second terminal  200  or a state in which the first terminal  100  does not receive a key signal for remotely controlling a wireless communication operation of the first terminal  100  from the second terminal  200 . 
         [0459]    And, the duration for detecting the operational state change is variously settable by a user. In particular, the controller  180  provides a user with a variously settable menu of the preset duration. The user is then able to change the duration through this menu. 
         [0460]    Meanwhile, if the operational state of the first terminal  100  is not changed for (or during) the preset duration [S 704 ], the controller  180  recognizes that the user does not use the wireless remote control communication with the second terminal  200  according to the present invention and then disconnects the communication with the second terminal  200  by controlling the communication unit  110  [S 705 ]. 
         [0461]    In this case, if the operational state of the first terminal  100  is not changed for the preset duration, as shown in  FIG. 36 , the controller  180  displays a selection window for selecting a disconnection of a communication with the second terminal  200  on the display unit  151 . If the disconnection of the communication with the second terminal  200  is selected from the selection window, the controller  180  is able to disconnect the communication with the second terminal. 
         [0462]    If the communication with the second terminal  200  is disconnected, as shown in (a) of  FIG. 37 , the controller  180  is able to output audio data for announcing the disconnected communication to the audio output module  152 . 
         [0463]    If the communication with the second terminal  200  is disconnected, as shown in (a) of  FIG. 38 , the controller  180  is able to display notification information for announcing the disconnected communication on the screen of the display unit  151 . 
         [0464]    In this case, if a user selects the notification information for announcing the disconnected communication with the second terminal  200 , as shown in (b) of  FIG. 38 , the controller  180  is able to reconnect the communication with the second terminal  200  by controlling the communication unit  110 . 
         [0465]    Meanwhile, while the communication with the second terminal  200  is disconnected, the controller  180  redetects whether the operational state of the first terminal  100  is changed [S 706 ]. 
         [0466]    In particular, the controller  180  detects whether a key signal for controlling the operation of the first terminal  100  is received form the second terminal  200  or whether to transmit new screen or audio information to the second terminal  200 . 
         [0467]    While the communication with the second terminal  200  is disconnected, if the operational state of the first terminal  100  is changed [S 707 ], the controller  180  reconnects the communication with the second terminal  200  by controlling the communication unit  110  [S 708 ]. 
         [0468]    In particular, the controller  180  reconnects the communication using the device information corresponding to the second terminal  200  in the access authentication device information list provided to the memory  160 . 
         [0469]    Meanwhile, referring to (b) of  FIG. 37 , if the communication with the second terminal  200  is reconnected, the controller  180  is able to output audio data for announcing the reconnected communication to the audio output module  152 . 
         [0470]    If the communication with the second terminal  200  is reconnected, as shown in (b) of  FIG. 38 , the controller  180  is able to display notification information for announcing the reconnected communication on the screen of the display unit  151 . 
         [0471]    If the communication with the second terminal  200  is reconnected, the controller  180  drives the display unit  151  or the backlight unit or is able to restore the reduced display brightness of the display unit  260  or the brightness of the backlight unit into the initial brightness level. 
       Seventh Embodiment 
       [0472]    While a communication is connected between a first terminal and a second terminal, the object of a seventh embodiment of the present invention is to provide a function of transceiving content information contained in each screen of the first and second terminals between the first terminal and the second terminal and a function of storing, executing and editing the received content information. 
         [0473]    In the following description of a seventh embodiment of the present invention, assume that a first terminal is a mobile terminal type and assume that a second terminal is a PC type. 
         [0474]    A seventh embodiment of the present invention is explained in detail with reference to  FIGS. 40 to 55  as follows. 
         [0475]    First of all, referring to  FIGS. 40 to 52 , if a communication with the first terminal  100  is connected via the communication unit  210  [S 801 ], the controller  270  of the second terminal  200  receives screen information containing at least one content information therein from the first terminal  100  and then displays the received screen information of the first terminal on a screen  600  of the display unit  260  [S 802 ]. 
         [0476]    In this case, the controller  270  of the second terminal  200  divides the screen  600  of the display unit  260 , as shown in (a) of  FIG. 41 , into a first region  610  and a second region  620 . Subsequently, the controller  270  of the second terminal  200  displays the first screen information containing the content information  611 ,  612  and  613  of the first terminal  100  on the first region  610  and also displays the second screen information containing the content information  625  of the second terminal  200  on the second region  620 . 
         [0477]    Referring to (b) and (c) of  FIG. 41 , the controller  270  of the second terminal  200  is able to display the first region  610  to have the same shape of an exterior of the first terminal  100  with a size of the screen of the mobile terminal  100 . 
         [0478]    In (b) of  FIG. 41 , shown is that the first terminal  100  is a touchscreen type terminal. In (c) of  FIG. 41 , shown is that the first terminal  100  is a bar type terminal having a character input key. 
         [0479]    Meanwhile, while the first and second screen information are displayed on the first and second regions  610  and  620 , respectively, if a user selects at least one of the content information within the first region  610  via the input unit  220  or the display unit  260  of a touchscreen type [S 803 ], the controller  270  of the second terminal  200  generates a signal for making a request for the selected content information to the first terminal  100  and then transmits the generated request signal to the first terminal  100  via the communication unit  210 . 
         [0480]    In this case, if the first terminal  100  is the touchscreen type shown in (b) of  FIG. 41 , as proposed in the foregoing descriptions with reference to  FIG. 4  and  FIG. 5 , the controller  270  of the second terminal  200  is able to transmit the content information request signal to the first terminal  100  in a manner that location information of the selected content information in the screen is contained in the content information request signal. 
         [0481]    If the first terminal  100  is the bar type shown in (c) of  FIG. 32 , the controller  270  of the second terminal  200  enables a key value, which was inputted by a user for the selection of the content information, to be contained in the content information request signal. 
         [0482]    In particular, if the content information within the first region  610  is selected, the controller  270  checks a display location of the content information within the first region  610  and then transmits a request signal containing the checked location information to the first terminal  100 . 
         [0483]    The controller  180  of the first terminal  100  obtains the location information within the request signal received from the second terminal  200  and then transmits the content information located at the obtained location on a current screen to the second terminal  200 . 
         [0484]    Finally, the controller  270  of the second terminal  200  receives the requested content information from the first terminal  100  via the communication unit  210  [S 805 ]. 
         [0485]    A process for selecting the content information in the step S 803  is explained in detail with reference to  FIGS. 42 to 46  as follows. 
         [0486]    First of all, referring to  FIG. 42 , if content information (‘a.jpg’)  612  to be downloaded from the first terminal  100  is dragged and dropped to the second region  620  from the first region  610  via a keypad or mouse of the input unit  220  or the touchscreen  260  [(a) of  FIG. 42 ], the controller  270  makes a request for the content information (‘a.jpg’)  612  to the first terminal  100  and then receives the requested content information (‘a.jpg’)  612  from the first terminal  100  [(b) of  FIG. 42 ]. 
         [0487]    In particular, after a user of the second terminal  200  has placed a pointer provided to the screen  600  at the content information (‘a.jpg’)  612  within the first region  610  by manipulating the keypad or mouse of the input unit  220  or the like, if the content information (‘a.jpg’)  612  is dragged &amp; dropped into the second region  620 , the controller  270  makes a request for the content information (‘a.jpg’)  612  to the first terminal  100  and then receives it from the first terminal  100 . 
         [0488]    In more particular, if the content information (‘a.jpg’)  612  is dragged &amp; dropped into the second region from the first region  610 , the controller  270  recognizes that the content information (‘a.jpg’)  612  has been selected. The controller  270  then transmits the request signal to the first terminal  100  in a manner that the display location information of the content information (‘a.jpg’)  612  within the first region  610  is contained in the request signal. 
         [0489]    If the first terminal  100  receives the request signal containing the display location of the content information (‘a.jpg’)  612  from the second terminal  200 , it transmits the content information (‘a.jpg’)  612  existing at the received location on the current screen to the second terminal  200 . 
         [0490]    Subsequently, referring to  FIG. 43 , If the content information (‘a.jpg’)  612  is selected, the controller  270  displays a first window  631  for a transmission request for the content information (‘a.jpg’)  612 , a second window  632  for an editing request and a third window  633  for an execution request [(a) of  FIG. 43 ]. 
         [0491]    In this case, if the first window  631  for the transmission command of the content information (‘a.jpg’)  612  is selected by a user, the controller  270  makes a request for the content information (‘a.jpg’)  612  to the first terminal  100  and then receives the requested content information (‘a.jpg’)  612  from the first terminal  100  [(b) of  FIG. 43 ]. 
         [0492]    In (a) of  FIG. 43 , if the user selects the second window  632 , the controller  270  transmits a signal for an editing request for the content information (‘a.jpg’)  612  to the first terminal  100 . 
         [0493]    The controller  180  of the first terminal  100  drives an editing application of the content information (‘a.jpg’)  612 , as shown in (a) of  FIG. 44 , according to the editing request signal received from the second terminal  200  and then transmits the screen information shown in (a) of  FIG. 44  to the second terminal  200 . 
         [0494]    The controller  270  of the second terminal  200  displays the screen information shown in (a) of  FIG. 44  on the first region  610 . If a command for editing the content information (‘a.jpg’)  612  is inputted by a user via the input unit  220 , the controller  270  of the second terminal  200  transmits the editing command inputted from the input unit  220  to the first terminal  100 . 
         [0495]    Subsequently, the controller  180  of the first terminal  100  edits the content information (‘a.jpg’)  612  according to the editing command received from the second terminal  200  and then transmits the screen information, in which the content information (‘a.jpg’)  612  is edited. To the second terminal  200 . 
         [0496]    Meanwhile, the controller  270  of the second terminal  200  receives the screen information, in which the content information (‘a.jpg’)  612  has been edited, from the first terminal  100  and then displays the received screen information on the first region  610 . If the content information (‘a.jpg’)  612  edited by the user is dragged &amp; dropped to the second region  620  from the first region  610 , the controller  270  of the second terminal  200  makes a request for the edited content information (‘a.jpg’)  612  to the first terminal  100  and is then able to receive the requested content information (‘a.jpg’)  612  from the first terminal  100 . 
         [0497]    In particular, in  FIG. 44 , the user of the second terminal  200  directly edits data to download in the first terminal  100  and is then able to download the edited data from the first terminal  100 . 
         [0498]    The controller  180  of the first terminal  100  drives an editing application of the content information (‘a.jpg’)  612 , as shown in (a) of  FIG. 44 , according to the editing request signal received from the second terminal  200  and then transmits the screen information shown in (a) of  FIG. 44  to the second terminal  200 . 
         [0499]    The controller  270  of the second terminal  200  displays the screen information shown in (a) of  FIG. 44  on the first region  610 . If a command for editing the content information (‘a.jpg’)  612  is inputted by the user via the input unit  220 , the controller  270  of the second terminal  200  transmits the editing command inputted from the input unit  220  to the first terminal  100 . 
         [0500]    The controller  180  of the first terminal  100  edits the content information (‘a.jpg’)  612  according to the editing command received from the second terminal  200  and then transmits the screen information, in which the content information (‘a.jpg’)  612  has been edited, to the second terminal  200 . 
         [0501]    The controller  270  of the second terminal  200  receives the screen information, in which the content information (‘a.jpg’)  612  has been edited, from the first terminal  100  and then displays the received screen information on the first region  610 . If the content information (‘a.jpg’)  612  is dragged &amp; dropped to the second region  620  from the first region  610  by the user, the controller  270  of the second terminal  200  makes a request for the edited content information (‘a.jpg’)  612  to the first terminal  100  and is then able to receive the requested content information (‘a.jpg’)  612 , 
         [0502]    Subsequently, referring to  FIG. 45 , after the user of the second terminal  200  has made a selection  634  for the content information (‘a.jpg’)  612 , which is to be downloaded from the first terminal  100 , by manipulating a keypad or mouse of the input unit  220 , if the user selects a specific point  626  of the second region  620  [(a) of  FIG. 45 ], the controller  270  makes a request for the content information (‘a.jpg’)  612  to the first terminal  100  and then receives the requested content information (‘a.jpg’)  612  [(b) of  FIG. 45 ]. 
         [0503]    Subsequently, referring to  FIG. 46 , if the user of the second terminal  200  specifies text content information  614 , which is to be downloaded, within the first region  610  by manipulating a keypad or mouse of the input unit  220  [(a) of  FIG. 46 ], the controller  270  makes a request for the specified text content information  614  to the first terminal  100  and then receives the requested text content information  614  [(b) of  FIG. 46 ]. 
         [0504]    Meanwhile, the controller  270  is able to further perform a process for storing, editing and executing the content information received from the first terminal, as shown in the following steps S 806  to S 811  or  FIGS. 47 to 52 . 
         [0505]    First of all, referring to  FIG. 47 , if a storage command for the content information (‘a.jpg’)  612  received in (b) of  FIG. 42  is inputted by a user [S 806 ], the controller  270  stores the received content information (‘a.jpg’)  612  in the memory  240 . 
         [0506]    In this case, the controller  270  obtains a format of the content information (‘a.jpg’)  612  and is then able to store the content information (‘a.jpg’)  612  in an ‘image’ storage space  623  corresponding to the obtained format of the content information (‘a.jpg’)  612  among storage spaces  621 ,  622 ,  623  and  624  which have been already classified per content information format [S 807 ]. 
         [0507]    Subsequently, if an editing command for the content information (‘a.jpg’)  612  received in (b) of  FIG. 42  is inputted by a user [S 808 ], the controller  270  drives an image editing relevant application  650  previously provided to the memory  240 , as shown in  FIG. 48 . 
         [0508]    In this case, the editing application  650  is provided with a plurality of editing tools for editing the image in various ways. The user of the second terminal  200  is able to edit the content information (‘a.jpg’)  612  using the editing tools. 
         [0509]    Moreover, the controller  270  is able to store the content information (‘a.jpg’)  612  having been edited by the user through the above editing tools [S 809 ]. 
         [0510]    Subsequently, referring to  FIG. 49 , if an execution command for the content information (‘a.jpg’)  612  received in (b) of  FIG. 42  is inputted by a user [S 810 ], the controller  270  drives an image execution relevant application  660  previously provided to the memory  240  and then executes the content information (‘a.jpg’)  612  through the image execution application  660  [S 811 ]. 
         [0511]    In this case, the image execution application  660  can include the image viewer software that displays images in various formats and is able to perform the same editing function of the image editing application  650  shown in  FIG. 48 . 
         [0512]    Namely, it is able to display the content information (‘a.jpg’)  612  through the image execution application. And, it is also able to edit and store the content information (‘a.jpg’)  612 . 
         [0513]    Subsequently, referring to  FIG. 50 , while an email address list content information  615  is displayed on the first region  610 , if an email address (‘2. KIM@abc.com’)  615   b  is dragged &amp; dropped to the second region  620  [(a) of  FIG. 50 ], the controller  270  makes a request for the email address (‘2. KIM@abc.com’)  615   b  to the first terminal  100  and then receives the requested email address (‘2. KIM@abc.com’)  615   b  [(b) of  FIG. 50 ]. 
         [0514]    If the email address (‘2. KIM@abc.com’)  615   b  is selected, the controller  270  drives an email application relevant to the email address (‘2. KIM@abc.com’)  615   b  and is then able to display an email writing window  670  for an email supposed to be sent to the email address (‘2. KIM@abc.com’)  615   b  [(b) of  FIG. 50 ]. In this case, if a user of the second terminal  200  writes an email content through the email writing window  660 , the controller  270  is able to send the written email to the email address (‘2. KIM@abc.com’)  615   b.    
         [0515]    Subsequently, referring to  FIG. 51 , while a phonebook content information  616  is displayed on the first region  610 , if a contact information (‘2. KIM 010-111-xxx’)  616   b  is dragged &amp; dropped to the second region  620  [(a) of  FIG. 51 ], the controller  270  makes a request for the contact information (‘2. KIM 010-111-xxx’)  616   b  to the first terminal and then receives the requested contact information (‘2. KIM 010-111-xxx’)  616   b  [(b) of  FIG. 51 ]. 
         [0516]    If the contact information (‘2. KIM 010-111-xxx’)  616   b  is selected, the controller  270  drives a call connection application relevant to the contact information (‘2. KIM 010-111-xxx’)  616   b  and is then able to connect a call to the contact information (‘2. KIM 010-111-xxx’)  616   b  [(c) of  FIG. 51 ]. 
         [0517]    Moreover, although not shown in  FIG. 51 , if the contact information (‘2. KIM 010-111-xxx’)  616   b  is selected, the controller  270  drives a message transmitting application relevant to the contact information (‘2. KIM 010-111-xxx’)  616   b  and is then able to display a message writing window for a message to be sent to the contact information (‘2. KIM 010-111-xxx’)  616   b . In this case, if a user of the second terminal  200  writes a message content through the message writing window, the controller  270  is able to send the written message to the contact information (‘2. KIM 010-111-xxx’)  616   b.    
         [0518]    Subsequently, referring to  FIG. 52 , while a webpage address (‘http://www.abc.com’)  617  is displayed on the first region  610 , if the webpage address (‘http://www.abc.com’)  617  is dragged &amp; dropped to the second region  620  [(a) of  FIG. 52 ], the controller  270  makes a request for the webpage address (‘http://www.abc.com’)  617  to the first terminal  110  and then receives the requested webpage address (‘http://www.abc.com’)  617  [(b) of  FIG. 52 ]. 
         [0519]    If the webpage address (‘http://www.abc.com’)  617  is selected, the controller  270  drives the Internet access application and then accesses the webpage address (‘http://www.abc.com’)  617  [(c) of  FIG. 52 ]. 
         [0520]    Moreover, although not shown in the drawing, if the content information received from the first terminal  100  is ‘schedule information’, the controller  270  of the second terminal  200  drives a schedule management application and is then able to update the schedule management application by editing the received ‘schedule information’ into the driven schedule management application. And, the controller  270  of the second terminal  200  is able to update the schedule management application without editing the received ‘schedule information’ into the driven schedule management application. 
         [0521]    In particular, all kinds of applications for the execution and editing of content information received from the first terminal  100  can be provided to the memory  230  of the second terminal  200 . The controller  270  of the second terminal  200  obtains a format of the content information received from the first terminal  100 , drives an application corresponding to the obtained format of the content information, and is then able to provide a user with the execution and editing functions. 
         [0522]    Subsequently, referring to  FIGS. 53 to 55 , if a communication with the first terminal  100  is connected via the communication unit  210  [S 901 ], the controller  270  of the second terminal  200  receives screen information containing at least one content information from the first terminal  100  and then displays the received screen information  610  of the first terminal  100  on a screen  600  of the display unit  260  [S 902 ]. 
         [0523]    In this case, the controller  270  of the second terminal  200  divides the screen  600  of the display unit  260 , as shown in (a) of  FIG. 54 , into a first region  610  and a second region  620 . Subsequently, the controller  270  of the second terminal  200  displays the first screen information containing the content information  611 ,  612  and  613  of the first terminal  100  on the first region  610  and also displays the second screen information containing the content information  625  of the second terminal  200  on the second region  620 . 
         [0524]    While the first and second screen information are displayed on the first and second regions  610  and  620 , respectively, if a user selects content information (‘work document.xls’)  625  within the second region  620  via the input unit  220  or the display unit  260  of a touchscreen type [S 903 ], the controller  270  of the second terminal  200  transmits the content information (‘work document.xls’)  625  to the first terminal  100  by controlling the communication unit  210  [S 904 ]. 
         [0525]    In particular, referring to (a) of  FIG. 54 , if the content information (‘work document.xls’)  625 , which is to be transmitted to the first terminal  100 , is dragged and dropped from the second region  620  to the first region  610  via a keypad or mouse of the input unit  220  or the touchscreen  260  [(a) of  FIG. 42 ], the controller  270  transmits the content information (‘work document.xls’)  625  to the first terminal  100 . 
         [0526]    In particular, after a user of the first terminal  100  has placed a pointer provided to the screen  600  at the content information (‘work document.xls’)  625  within the second region  620  by manipulating the keypad or mouse of the input unit  220  or the like, if the content information (‘work document.xls’)  625  is dragged &amp; dropped into the first region  610 , the controller  270  transmits the content information (‘work document.xls’)  625  to the first terminal  100 . 
         [0527]    Moreover, while the content information (‘work document.xls’)  625  within the second region  620  of the touchscreen type display unit  260  is touched, if the user of the second terminal  200  drags and drops the content information (‘work document.xls’)  625  into the first region  610 , the controller  270  transmits the content information (‘work document.xls’)  625  to the first terminal  100 . 
         [0528]    While the user of the second terminal  200  selects the content information (‘work document.xls’)  625 , if the user selects the first region  610  by manipulating the keypad and mouse of the input unit  220 , the controller  270  transmits the content information (‘work document.xls’)  625  to the first terminal  100 . 
         [0529]    If the user of the second terminal multi-touches the content information (‘work document.xls’)  625  within the second region  620  of the touchscreen type display unit  260  and the first region  610 , the user of the second terminal  200  transmits the content information (‘work document.xls’)  625  to the first terminal  100 . 
         [0530]    Moreover, if the user of the second terminal  200  specifies text information  670 , which is to be transmitted to the first terminal  100 , within the second region  620  by manipulating the keypad and mouse of the input unit  220 , as shown in (a) of  FIG. 55 , the controller  270  transmits the content information (‘work document.xls’)  625  to the first terminal  100 , a shown in (b) of  FIG. 55 . 
         [0531]    The first terminal is able to perform the storing, editing and executing processes described with reference to  FIGS. 47 to 52  on the content information (‘work document.xls’)  625  received from the second terminal  200  according to  FIGS. 53 to 55 . And, the first terminal  100  is able to transmit the storage, editing and execution screen information to the second terminal  200 . 
       Eighth Embodiment 
       [0532]    According to an eighth embodiment of the present invention, while a second terminal is connected to communicate with a plurality of first and third terminals, when screen information of the first and third terminals are respectively displayed on a screen of the second terminal, if content information within the screen information of the first terminal is shifted into the screen information of the third terminal, the second terminal delivers the content information of the first terminal to the third terminal. Such a function is provided by the eighth embodiment of the present invention. 
         [0533]    In the following description of an eighth embodiment of the present invention, assume that first and third terminals are mobile terminal types and assume that a second terminal is a PC type terminal. 
         [0534]    Referring to  FIGS. 56 to 58 , if communications with first and third terminals  100  and  300  are connected via the communication unit  210  [S 1001 ], the controller  270  of the second terminal  200  receives screen information, each of which contains at least one content information, from the first and third terminals  100  and  300 , respectively, and then displays the received screen information  710  and  730  of the first and third terminals  100  and  300  on a screen  700  of the display unit  260  [S 1002 ]. 
         [0535]    In this case, referring to  FIG. 57 , the controller  270  of the second terminal  200  divides the screen  700  of the display unit  260  into first to third regions  710 ,  720  and  730 . The controller  270  of the second terminal  200  displays the first screen information containing the content information  711  and  712  on the first region  710 . The controller  270  of the second terminal  200  displays the second screen information of the second terminal  200  on the second region  720 . And, the controller  270  of the second terminal  200  displays the third screen information containing the content information  731  and  732  on the third region  730 . 
         [0536]    Meanwhile, while the screen information of the first and second terminals  100  and  300  are displayed on the first and third regions  710  and  730 , respectively, if a user selects the content information  712  within the first region  710  and the third region  730  via the input unit  220  or the display unit  260  of a touchscreen type [S 1003 ], the controller  270  of the second terminal  200  delivers the selected content information  712  of the first terminal  100  to the third terminal  300  by controlling the communication unit  210  [S 1004 ]. 
         [0537]    The content information selecting process of the first terminal  100  in the step S 903  is explained in detail with reference to  FIG. 58  as follows. 
         [0538]    First of all, referring to  FIG. 58 , if content information (‘a.jpg’)  712  of the first terminal  100 , which is to be delivered to the third terminal  300 , is dragged &amp; dropped to the third region  730  from the first region  710  via the keypad of the input unit  220 , the mouse or the touchscreen  260  [(a) of  FIG. 58 ], the controller  270  delivers the content information (‘a.jpg’)  712  to the third terminal  300  [(b) of  FIG. 58 ]. 
         [0539]    In particular, if a user of the second terminal  200  places a pointer provided to the screen  700  at the content information (‘a.jpg’)  712  within the first region  710  by manipulating the keypad of the input unit  220 , the mouse or the like and then drags &amp; drops the content information (‘a.jpg’)  712  into the third region  730  [(a) of  FIG. 58 ], the controller  270  delivers the content information (‘a.jpg’)  712  to the third terminal  300  [(b) of  FIG. 58 ]. 
         [0540]    If the user of the second terminal  200  selects the third region  730  by manipulating the keypad and mouse of the input unit  200  while selecting the content information (‘a.jpg’)  712 , the controller  270  delivers the content information (‘a.jpg’)  712  to the third terminal  300 . 
         [0541]    If the user of the second terminal  200  multi-touches the content information (‘a.jpg’)  712  within the first region  710  of the touchscreen  260  and the third region  730 , the controller  270  delivers the content information (‘a.jpg’)  712  to the third terminal  300 . 
         [0542]    In case of delivering the content information  712  selected in  FIG. 58  to the third terminal  300 , the controller  270  generates a signal for commanding to transmit the content information  712  to the third terminal  300  and then transmits the generated transmission command signal to the first terminal  100  via the communication unit  210 . 
         [0543]    If so, the first terminal  100  transmits the content information  712  to the third terminal  300  according to the transmission command signal received from the second terminal  200 . 
         [0544]    In this case, as mentioned in the foregoing description with reference to  FIG. 4  and  FIG. 5 , if the content information  712  of the first region  710  is selected in (a) of  FIG. 58 , the controller  270  obtains display location information of the content information  712  on the first region  710  and is then able to transmit the transmission command signal in a manner that the obtained location information of the content information  712  is contained in the transmission command signal. If so, the first terminal  100  is able to transmit the content information  712  existing at the received location within a current screen to the third terminal  300 . 
         [0545]    Moreover, the controller  270  makes a request for the selected content information  712  in  FIG. 58  to the first terminal  100  and then receives the requested content information  712 . The controller  270  is able to deliver the content information  712  received from the first terminal  100  by transmitting the content information  712  to the third terminal. 
         [0546]    Subsequently, referring to  FIG. 59  and  FIG. 60 , if communications with first and third terminals  100  and  300  are connected via the communication unit  210  [S 1101 ], the controller  270  of the second terminal  200  receives screen information, each of which contains at least one content information, from the first and third terminals  100  and  300 , respectively, and then displays the received screen information  710  and  730  of the first and third terminals  100  and  300  on a screen  700  of the display unit  260  [S 1102 ]. 
         [0547]    Meanwhile, while the screen information of the first and second terminals  100  and  300  are displayed on the first and third regions  710  and  730 , respectively, if a user selects the content information  731  within the third region  730  and the first region  710  via the input unit  220  or the display unit  260  of a touchscreen type [S 1103 ], the controller  270  of the second terminal  200  delivers the selected content information  731  of the third terminal  300  to the first terminal  100  by controlling the communication unit  210  [S 1104 ]. 
         [0548]    In particular, referring to  FIG. 60 , if the content information (‘d.avi’)  731  of the third terminal  300 , which is to be delivered to the first terminal  100 , is dragged &amp; dropped from the third region  730  to the first region  710  via the keypad of the input unit  220 , the mouse or the touchscreen  260  [(a) of  FIG. 60 ], the controller  270  delivers the content information (‘d.avi’)  731  to the first terminal  300  [(b) of  FIG. 60 ]. 
         [0549]    If the user of the second terminal  200  selects the first region  710  by manipulating the keypad and mouse of the input unit  200  while selecting the content information (‘d.avi’)  731 , the controller  270  delivers the content information (‘d.avi’)  731  to the first terminal  100 . 
         [0550]    If the user of the second terminal  200  multi-touches the content information (‘d.avi’)  731  within the third region  730  of the touchscreen  260  and the first region  710 , the controller  270  delivers the content information (‘d.avi’)  731  to the first terminal  100 . 
       Ninth Embodiment 
       [0551]    According to a ninth embodiment of the present invention, while a short-range communication for a wireless operation control of the present invention is connected between a first terminal and a second terminal, if the first terminal is connected to a mobile communication with an external third terminal, the first terminal converts short-range communication data received from the second terminal to mobile communication data and then transmits this mobile communication data to the third terminal. Moreover, the first terminal converts mobile communication data received from the third terminal to short-range communication data and then transmits this short-range communication data to the second terminal. Therefore, the object of the ninth embodiment of the present invention is to provide a tripartite heterogeneous communication function. 
         [0552]    In the following description of a ninth embodiment of the present invention, assume that first and third terminals are mobile terminal types and assume that a second terminal is a PC type terminal. 
         [0553]    A ninth embodiment of the present invention is explained in detail with reference to  FIG. 61  and  FIG. 62  as follows. 
         [0554]      FIG. 61  is a signal processing diagram of a process for performing a voice call among a second terminal, a first terminal and a third terminal using different communication systems according to a ninth embodiment of the present invention. 
         [0555]    Referring to  FIG. 61 , If a remote control communication with the second terminal  200  is connected [S 1201 ], the controller  180  of the first terminal  100  is able to perform the above-mentioned operations of the first to eighth embodiments. And, the controller  180  of the first terminal  100  is able to perform a voice call with the second terminal  200  using the short-range communication. 
         [0556]    In particular, the controller  270  of the second terminal  200  converts a user audio inputted via the microphone to a short-range communication audio signal and then transmits the converted short-range communication audio signal to the first terminal  100  via the communication unit  210  [S 1202 ]. Moreover, the controller  270  of the second terminal  200  outputs a speech signal of the first terminal  100 , which was received via the communication unit  210 , to the speaker  240 . 
         [0557]    The controller  180  of the first terminal  100  converts a user audio inputted via the microphone  122  to a short-range communication audio signal and then transmits the converted short-range communication audio signal to the second terminal  200  via the communication unit  110  [S 1203 ]. Moreover, the controller  180  of the first terminal  100  outputs a speech signal of the second terminal  200 , which was received via the communication unit  110 , to the audio output module  152 . 
         [0558]    Thus, in the course of the voice call using the short-range communication with the second terminal  200 , if a mobile communication with an external third terminal  300  is connected [S 1204 ], the controller  180  of the first terminal  100  generates a signal for querying a presence or non-presence of a communication connection to the third terminal  200  and then transmits the generated query signal to the second terminal  200  [S 1205 ]. 
         [0559]    In this case, the mobile communication can adopt one of Code Division Multiple Access (CDMA), Universal Mobile Telecommunications Systems (UMTS), Global System for Mobile Communications (GSM) and Wideband Code Division Multiple Access (WCDMA). 
         [0560]    If the query signal is received from the first terminal  100 , the controller  270  of the second terminal  200  displays a selection window for selecting a presence or non-presence of a communication connection with the third terminal  200  on the screen of the display unit  260 . 
         [0561]    If an acceptance of a communication connection with the third terminal  300  is selected from the selection window [S 1206 ], the controller  27  transmits a signal for announcing the communication connection acceptance to the first terminal  100  and transmits a user&#39;s audio signal inputted via the microphone  250  to the first terminal  100  [S 1207 ]. 
         [0562]    Moreover, if a communication disconnection from the third terminal  300  is selected from the selection window, the controller  270  of the second terminal  200  transmits a signal for announcing the communication disconnection to the first terminal  100 . 
         [0563]    If the signal for announcing the communication disconnection is received from the second terminal  200 , the first terminal  100  disconnects the communication between the second terminal  200  and the third terminal  300  [S 1208 ]. 
         [0564]    Meanwhile, if the short-range communication audio signal is received from the second terminal  200  [S 1207 ], the controller  180  of the first terminal  100  converts the received short-range communication audio signal to a mobile communication audio signal [S 1209 ] and then transmits the converted mobile communication audio signal to the third terminal  300  [S 1210 ]. 
         [0565]    Moreover, if the mobile communication audio signal is received from the third terminal  300  [S 1211 ], the controller  180  of the first terminal  100  converts the received mobile communication audio signal to a short-range communication audio signal [S 1212 ] and then transmits the converted short-range communication audio signal to the second terminal  200  [S 1213 ]. 
         [0566]      FIG. 62  is a signal processing diagram of a process for performing a voice call among a second terminal, a first terminal and a third terminal using messages and speech according to a ninth embodiment of the present invention. 
         [0567]    Referring to  FIG. 62 , the first terminal  100  is connected to the second terminal  200  by a short-range communication system [S 1301 ] and is also connected to the third terminal  300  by a mobile communication system [S 1302 ]. 
         [0568]    In this case, the first terminal  100  performs a text message communication with the second terminal using the short-range communication system and also performs a speech call with the third terminal  300  using the mobile communication system. 
         [0569]    The first terminal  100  transmits a signal for querying a presence or non-presence of a communication connection with the third terminal to the second terminal  200  [S 1303 ]. 
         [0570]    If the query signal is received from the first terminal  100 , the second terminal  200  displays a selection window for selecting a presence or non-presence of a communication connection with the third terminal  300  on the screen of the display unit  260 . 
         [0571]    If an acceptance of a communication connection with the third terminal  300  is selected from the selection window [S 1304 ], the second terminal  200  transmits a signal for announcing the acceptance of the communication connection to the first terminal  100 , receives an input of a message content from a user [S 1305 ], and then sends a message inputted by the user to the first terminal [S 1306 ]. 
         [0572]    If a communication disconnection from the third terminal  300  is selected from the selection window, the second terminal  200  transmits a signal for announcing the communication disconnection to the first terminal  100 . 
         [0573]    If the signal for announcing the communication disconnection is received from the second terminal  200 , the first terminal  100  disconnects the communication between the second terminal  200  and the third terminal  300  [S 1307 ]. 
         [0574]    Meanwhile, if a short-range communication message is received from the second terminal  200  [S 1306 ], the first terminal  100  converts the message content to a mobile communication audio signal using the text to speech converting unit  181  [S 1308 ] and then transmits the converted mobile communication audio signal to the third terminal  300  [S 1309 ]. 
         [0575]    In particular, the first terminal  100  converts the message content of the second terminal  200  to a speech call content and then transmits the speech call content to the third terminal  300 . Therefore, a user of the third terminal  300  is able to make a speech call to the third terminal  300  through the first terminal  100 . 
         [0576]    If the mobile communication audio signal is received from the third terminal  300  [S 310 ], the first terminal  100  converts the received mobile communication audio signal to a short-range communication message using the text to speech converting unit  181  [S 1311 ] and then sends the converted short-range communication message to the second terminal  200  [S 1312 ]. 
         [0577]    In particular, the first terminal  100  converts the speech call content of the third terminal  300  to a text message and then sends the text message to the second terminal  200 . Therefore, a user of the second terminal  200  is able to perform a message communication with the third terminal  300  through the first terminal  100 . 
         [0578]    Alternatively, although the first terminal  100  converts the message of the second terminal  200  to the mobile communication audio signal in the step S 1308 , the second terminal  200  converts a message content written by a user to a mobile communication audio signal and is then able to transmit this mobile communication audio signal to the first terminal  100 . 
         [0579]    Accordingly, the present invention provides the following effects and/or advantages. 
         [0580]    First of all, data of a first terminal is executable in a second terminal. And, all functions of the first terminal are usable using the second terminal. 
         [0581]    Secondly, content information contained in a first terminal screen can be freely used by a second terminal. 
         [0582]    Thirdly, a tripartite heterogeneous communication function can be provided to first to third terminals using a short-range communication system and a mobile communication system. 
         [0583]    In addition, the above-described methods can be implemented in a program recorded medium as computer-readable codes. The computer-readable media include all kinds of recording devices in which data readable by a computer system are stored. The computer-readable media include ROM, RAM, CD-ROM, magnetic tapes, floppy discs, optical data storage devices, and the like for example and also include carrier-wave type implementations (e.g., transmission via Internet). 
         [0584]    It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.