Patent Publication Number: US-8116814-B2

Title: Mobile communications terminal using multi-functional socket and method thereof

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a divisional of U.S. application Ser. No. 11/414,640, filed Apr. 27, 2006, issued as U.S. Pat. No. 7,899,494, which claims the benefit of earlier filing date and right of priority to Korean Application No. 35189/2005, filed on Apr. 27, 2005, Korean Application No. 117103/2005, filed on Dec. 2, 2005, Korean Application No. 118405/2005, filed on Dec. 6, 2005, and Korean Application No. 37546/2006, filed on Apr. 26, 2006, the contents of all of which are hereby incorporated by reference herein in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a mobile communications terminal, and particularly, to a mobile communications terminal using a multi-functional socket or a female connector which is capable of minimizing a size of a mobile communications terminal, and a method thereof. 
     2. Background of the Invention 
     In general, a mobile communications terminal is a communication device capable of providing a wireless call to another party and providing a wireless connection anytime and anywhere by a switching control of an MSC (Mobile Switching Center) while moving in a service region formed by a BS (Base Station). 
     The mobile communications terminal is provided in an outer surface thereof with a receptacle for a data communication interface with external devices such as a computer or a digital camera and a socket for an interface with peripheral devices such as an earphone or a speaker. 
     The data communication between the mobile communications terminal and the external device is performed by a data communication between an internal or external memory of the external device and a Universal Serial Bus (USB) or a Universal Asynchronous Receiver/Transmitter (UART) of the mobile communications terminal. Here, the UART refers to a microchip storing programs for controlling interfaces toward serial devices attached to the mobile communications terminal, while the USB refers to an interface for enabling a data communication between the mobile communications terminal and the peripheral devices such as mouse, printer, modern, speaker, and the like. 
     For the data communications, a USB or UART cable is connected between the mobile communications terminal and the external device. One side of the USB or UART cable is connected to a USB or UART port of the external device, and the other side thereof is connected to the receptacle of the mobile communications terminal. 
     In addition, for using an earphone or a microphone by connecting to the mobile communications terminal, the earphone or the microphone is inserted into the socket of the mobile communications terminal to thus input an audio signal to the mobile communications terminal or to output the audio signal therefrom. 
     A remote controller of the mobile communications terminal is connected into the middle of the cable of the earphone or microphone connected to the mobile communications terminal to thus control a communication key of the mobile communications terminal, a function key of an MP3 player, and the like, resulting in enabling a user to remotely control the operation of his mobile communications terminal. 
     The related art mobile communications terminal was provided with a receptacle for a data signal and a socket for a audio signal in its outer surface, and, performed a data communication or inputted/outputted the audio signal by inserting a connector for the data signal or a connector for the audio signal thereinto, if necessary. Namely, the related art mobile terminal respectively assigns function corresponding to different interfaces or connectors to the receptacle and the socket unit. 
     However, the related art mobile communications terminal is provided with the receptacle for the data signal and the socket for the audio signal. As a result, components included in the receptacle or socket occupy a considerable area at the outer surface of the mobile communications terminal, and also are positioned in a considerably large area in the mobile communications terminal, which results in a difficulty in minimizing of the size of the mobile communications terminal. 
     SUMMARY OF THE INVENTION 
     One aspect of the present invention pertains to the recognition by the present inventors about the background art problems explained above. Namely, it would be advantageous to provide a mobile communications terminal using a multi-functional socket or a connector which is capable of minimizing a size of a mobile communications terminal meanwhile performing all of a data input/output function and a charging function by use of one socket unit which is provided in the mobile communications terminal for receiving at least one signal of a power signal and a data from an external device connected thereto, and a method thereof. 
     To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there, is provided a mobile communications device comprising a connector, capable of connecting the mobile communications device to at least one external device for establishing an electrical connection between, the at least one external device and the mobile communications device; a switching unit; and a controller cooperating with the connector and the switching unit to perform, sending and/or receiving at least one signal with respect to the at least one external device via at least one dedicated path according to at least one identification signal; and generating a is control signal to control the at least one signal, wherein the at least one signal comprises at least one of a power signal and data. 
     To achieve these and other advantages and in accordance with the purpose of the present invention, there is provided a method for using a multi-functional connector of a mobile terminal comprising connecting at least one external equipment to the mobile terminal and establishing an electrical connection between the terminal and the equipment; determining whether to receive and send data between the at least one external equipment and the mobile terminal, or receive at the mobile terminal a power signal from an external equipment; processing the power signal if the mobile terminal is determined to receive the power signal; and directing the data to at least one designated path corresponding to at least one identification signal and generating at least one control signal to control directed data based upon the determining to receive and send the data. 
     To achieve these and other advantages and in accordance with the purpose of the present invention, there is provided an adapter for a mobile communications terminal, comprising a main housing; a first aligning portion extending beyond a first surface of the main housing in a first direction; a plurality of first electrical contacts supported by the first aligning portion; and a plurality of second electrical contacts disposed along a second aligning portion spaced apart from the first aligning portion, the second aligning portion extending beneath a second surface of the main housing in a second direction. 
     To achieve these and other advantages and in accordance with the purpose of the present invention, there is provided a system comprising at least one external equipment comprising a connector portion; and a mobile communications terminal comprising, a connector capable of connecting the mobile communications terminal to the at least one external equipment; a switching unit; and a controller cooperating with the connector and the switching unit to perform, sending and/or receiving at least one signal with respect to the at least one external equipment via at least one dedicated path according to at least one identification signal; and generating a control signal to control the at least one signal, wherein the at least one signal comprises at least one of a power signal and data. 
     The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. 
       In the drawings: 
         FIG. 1  is a view illustrating an exemplary view of a mobile communications terminal using a multi-functional socket in accordance with a first embodiment of the present invention; 
         FIG. 2  illustrates an exemplary embodiment of a connector of the mobile communications terminal in accordance with the first embodiment of the present invention. 
         FIG. 3  is a flow chart illustrating sequential steps of a method for using a multi-functional socket in accordance with a first embodiment of the present invention; 
         FIGS. 4A through 4C  are views illustrating pin allocation tables of connector of several external device in accordance with a first embodiment of the present invention; 
         FIGS. 5A and 5B  are exemplary views showing a mobile communications terminal using a switching processing unit in accordance with a first embodiment of the present invention; 
         FIG. 6  is a view illustrating a construction of a multi-functional socket in accordance with a second embodiment of the present invention; 
         FIGS. 7A through 7E  are views illustrating pin allocation tables for a multi-functional socket in accordance with a second embodiment of the present invention; 
         FIG. 8  is a view illustrating an operational principle of a switching processing unit in accordance with a second embodiment of the present invention; 
         FIG. 9  is an exemplary view illustrating a construction of a mobile communications terminal using a multi-functional socket in accordance with a third embodiment of the present invention; and 
         FIGS. 10A through 10F  are views illustrating pin allocation tables for a multi-functional socket in accordance with a third embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Description will now be given in detail of the present invention, with reference to the accompanying drawings. 
     Explanations will now be made for a mobile communications terminal using a multi-functional socket which is capable of minimizing a size of a mobile communications terminal by performing all of a data input/output function and a charging function by use of one socket unit which is provided in the mobile communications terminal for receiving at least one of a power signal and a data from an external device connected thereto, and a method thereof. Furthermore, the present invention may provide an adapter for a mobile communications terminal which is an object that you use to connect two different pieces of electrical equipment, or to connect two pieces of equipment to the same power supply and is capable of simultaneously performing at least two functions of a data input/output function and a charging function. 
     One socket unit for performing the data input/output function and the charging function to be explained with reference to embodiments of the present invention may be applied to all types of mobile communications terminals including mobile phones, Personal Digital Assistants (PDAs), note books, a Portable Multimedia Players (PMPs), and the like. Here, the data comprises at least one of a call connection signal, a call receiving signal, a general device controlling signal, a computer file, a text data, a Universal Serial Bus (USB) data, and Universal Asynchronous Receiver/Transmitter (UART) data and a multimedia data. In addition, a TV-out function may be performed by the one socket unit disposed in the mobile communications terminal. 
     Here, the one socket unit provided in the mobile communications terminal refers to a socket unit to which an earphone for performing an data input/output function is connected. The socket unit is constituted with 12 pins in the embodiments of the present invention. However, the construction of the socket unit may not be limited on 12 pins. Rather, it may be preferable to include the minimum number of pins required for performing all of the data input/output function and the charging function. 
       FIG. 1  is a view illustrating a construction of a mobile communications terminal using a multi-functional socket in accordance with a first embodiment of the present invention. 
     As illustrated in  FIG. 1 , a mobile communications terminal using a multi-functional socket in accordance with a first embodiment of the present invention may include a transceiver  110 , a input unit  120 , a display  150 , a socket unit, a connector, or a jack  170  for receiving and/or sending at least one of a power signal and a data from an external device connected thereto, a switching unit (or switching circuit)  160  for forwarding the received data to designated paths according to at least one identification signal, a controller  140  for generating at least one control signal to control the forwarded data, and a memory  130  for storing information for the socket unit  170  and a connector of the external device connected to the socket unit  170 . 
     Here, the switching unit  160  forwards signals inputted from the external device performing at least one of the data input/output function and the charging function to designated paths based upon at, least one identification signal inputted from the connected external device. The identification signal denotes a signal outputted from an arbitrary pin of the socket unit  170  to which a connector of the external device is connected to thus identify a type of at least one external device. 
       FIG. 2  shows the exemplary view of the connector or socket unit  170  arranged at the mobile communications terminal in accordance with the first embodiment of the present invention. 
     As illustrated in  FIG. 2 , the socket unit or connector  170  may be provided in an arbitrary area of the mobile communications terminal  100  so as to be connected to a connector portion  190  of at least one of several external equipment (not shown) performing the data input/output function and the charging function. Preferably, the socket unit  170  may be provided at a left or right side of upper, lower, left and right sides based upon a display unit of the mobile communications terminal. 
     Opposite the connector  170 , a connector portion  190  of the external equipment can include an aligning portion  191  to guide the connector  170  to receive the connector portion  190  of the external equipment. The aligning portion  191  may extend beyond one surface of the connector portion in a longitudinal direction and be configured to be shaped to match an opening of the connector  170 . Here, the connector or socket unit  170  and the aligning portion  191  can be formed in various shapes, such as rectangle or circle. In addition, numerous materials can be used to make the connector  170  and aligning portion  191 . The configuration of the connector  170  and the connector portion  190  as explained above can merely be cited for the sake of explanation of the present invention and the shape other than this can be used as it would be understood by those skilled in the art. 
     A plurality of electrical contacts or pins  171  can be disposed at an inner or outer surface of the connector  170  on a serial configuration, a parallel configuration or a variety of different configurations including a single row arrangement or two. Furthermore, a plurality of second electrical contacts can be arranged at an inner or outer surface of the aligning portion  191  of the connector portion  190  to be mated with the plurality of electrical contacts  171 . The configuration of the plurality of electrical contacts  171  arranged inside the connector  170  has been referred to merely for the sake of explanation of the present invention and other configurations. For example, two or more smaller connectors instead of a single connector as shown in  FIG. 2  can be arranged at the mobile terminal and at least one set of smaller number of electrical contacts can be disposed in each of the two or more smaller connectors. Additionally, the smaller sized connector can be configured to be a form of an audio jack and the corresponding one set of the plurality of electrical contacts can be arranged along the audio jack shaped connector in a longitudinal direction. This audio shaped jack can receive an ordinary audio plug of a stereo head phone or speaker. Any different configuration of the connector, the plurality of electrical contacts and the connector portion other than the above recited embodiments can be used as it would be understood by those skilled in the art. 
     The opening of the connector  170  can be flush with the general outer surface of the mobile terminal body  100 . The connector  170  may extend beneath the outer surface of the mobile terminal body to be mated with the aligning portion  191  as shown in  FIG. 2 . However, the arrangement of the connector  170  to receive the aligning portion  191  can be reversed in such a way that the connector portion  190  of the external equipment can receive a possible aligning portion of the connector  170 , the configuration not shown. 
     Furthermore, the connector portion  190  can be formed in numerous configurations as shown in  FIGS. 1 and 2 . For example, the aligning portion  191  can be extended from a side wall of the connector portion  190  as shown in  FIG. 2  or extended from a top surface of the connector portion  190  as shown in  FIG. 1 . Here, the terms, top and side, can be merely cited to describe a generation orientation of the  FIG. 1  or  2  where the aligning portion  191  is disposed on the upper side of the connector portion  190  and a cable connected to the external equipment is disposed at the lower surface of the connector portion  190 , as shown in  FIG. 1 . 
     The mobile terminal can further include a number of different types of a cover or protective device  172  to protect the plurality of contacts  171  disposed at an inner or outer surface of the connector  170 . The connector  170  can be configured to be formed and mounted inside the mobile terminal in such way that the connector can be easily replaceable for any possible repair purpose. 
     A method for using the multi-functional socket of the mobile communications terminal in accordance with the first embodiment of the present invention having the construction will now be explained with reference to  FIG. 3 . 
       FIG. 3  is a flow chart illustrating sequential steps of a method for using a multi-functional socket of a mobile communications terminal in accordance with a first embodiment of the present invention. 
     As illustrated in  FIG. 3 , a method for using a multi-functional socket of a mobile communications terminal in accordance with a first embodiment of the present invention may include receiving at least one of a power signal and a data from an external device connected (S 310 ), determining whether the signal is data or the power signal (S 320 ); if the signal is data, forwarding the received data to a designated path according to at least one identification signal (S 330 ), generating at least one control signal to control the forwarded data (S 340 ), and processing the forwarded data based upon the generated control signal (S 350 ). If the signal is the power signal, then the method step can move to the step for processing the power signal (S 350 ). 
     The method for using the multi-functional socket of the mobile communications terminal in accordance with the first embodiment of the present invention having the construction will now be explained in detail. 
     First, the mobile communications terminal  100  is provided with the socket unit  170  which has the same number of pins as that of the connector portion  190  of the external device. The external device refers to equipment for performing a data input/output function such as an earphone, a Universal Serial Bus (USB) and Universal Asynchronous Receiver/Transmitter (UART) data communications, and equipment for performing a charging function. 
     Here, the socket unit  170  provided in the mobile communications terminal  100  is connected to the connector portion  190  of at least one external device which performs at least one function of the data input/output function and the charging function (S 310 ). Pin mapping allocation tables which are differently constructed according to different types of external device will be described with reference to  FIGS. 4A through 4C . 
       FIGS. 4A through 4C  are views illustrating pin allocation tables of connector of several external device in accordance with a first embodiment of the present invention. 
       FIG. 4A  illustrates a pin allocation table of the socket unit  170  for a connector portion  190  of the external equipment, especially, a user equipment, for performing the data input/output function among several external device in accordance with the first embodiment of the present invention. Here, in the connector portion  190  of the external device, the EAR_L+( 5 ) and EAR_R+( 4 ) may be allocated for audio signals outputted from left and right sides of an earphone, respectively, HOOK DETECT( 7 ) may be allocated for a signal which indicates whether an earphone switch has been pressed, EAR_M−( 8 ) may be allocated for an audio signal inputted through a microphone of the earphone, and SELECT_ 1 ( 11 ) may be allocated for a signal which indicates whether the earphone has been inserted into the socket unit  170 . 
       FIG. 4B  illustrates a pin allocation table of the socket unit  170  for a connector portion  190  of external equipment, especially, a user equipment, for performing the data input/output function among the several external device in accordance with the first embodiment of the present invention. Here, in the connector portion  190  of the external device, VPWR( 1 ) may be allocated for a current for charging a battery, USB_POWER( 3 ) may be allocated for power supplied via a USB, USB_D+( 4 ) and USB_D−( 5 ) may be respectively allocated for sending and receiving of USB data, TXD( 6 ) and RXD( 9 ) may be respectively allocated for sending and receiving UART data, CTS (Clear To Send)( 7 ) may be allocated for a CTS signal, RTS (Ready To Send)( 8 ) may be allocated for an RTS signal, and SELECT_ 2 ( 10 ) may be allocated for a signal which indicates whether the user equipment has been connected. 
       FIG. 4C  illustrates a pin allocation table of the socket unit  170  for a connector portion  190  of external equipment, especially, a developer equipment, for performing the data input/output function among the several external device in accordance with the first embodiment of the present invention. Here, in the connector portion  190  of the external device, BATTERY LINE( 2 ) may be allocated for a power supply to a battery, POWER ON( 3 ) may be allocated for turning power on of the mobile communications terminal  100 , TXD( 4 ) and RXD( 5 ) may be respectively allocated for sending and receiving UART data, TDO_ARM( 6 ), TMS( 7 ), TCK( 8 ) and TDI( 9 ) may be allocated for a Joint Test Action Group (JTAG) mode for verification, and SELECT_ 3 ( 10 ) may be allocated for a signal indicating whether the developer equipment has been connected. 
     The SELECT_ 2 ( 11 ) of the user equipment and the SELECT_ 3 ( 10 ) of the developer equipment are allocated to the same pin so as to be identified by signal value ‘0’ or&#39;1′. In addition, the pin mapping allocation tables for the socket unit  170  and the connector portion  190  of the external device connected to the socket unit  170  provided in the first embodiment of the present invention may be variously changeable according to methods to be used. 
     Thus, the mobile communications terminal according to the first embodiment of the present invention provides the pin mapping allocation table for equipments performing the data input/output function, namely, the user equipments and the developer equipment, which perform the data input/output function. Data inputted from the external device may be switched by identification signals inputted from an arbitrary pin, namely, a tenth pin or an eleventh pin of the connector portion  190  of the external device. 
     Afterwards, it can be determined whether the data has been received (S 320 ) and when the data is received, the switching unit  160  can redirect the data inputted from the external device to designated paths according to the at least one identification signal (S 330 ). A principle for forwarding the outputted data will be explained with reference to  FIGS. 5A and 5B . 
       FIGS. 5A and 5B  are views detailed structures of a switching unit in accordance with a first embodiment of the present invention. 
     As illustrated in  FIG. 5A , the switching unit  160  in accordance with the first embodiment of the present invention forwards data inputted from 12 pins of the socket unit  170  to paths corresponding to the equipment for performing the data input/output function, respectively, according to at least one identification signal. 
     As illustrated in  FIG. 5B , regarding the switching unit  160  in accordance with the first embodiment of the present invention, a first switch  161  forwards the data inputted from the 12 pins of the socket unit  170  to the paths corresponding to the equipments for performing the data input/output function according to a first identification signal, and then a second switch  162  forwards the data forwarded by the first switch  161  to paths respectively corresponding to the equipment for performing the data input/output function according to a second identification signal. 
     The switching unit ( 160 ) may forward the data inputted from at least one external device performing the data input/output function to the designated path via the first and second switches and the mobile terminal can include more switches according to different kinds of the data inputted from at least one external device. 
     Hence, the controller  140  generates at least one control signal to control the forwarded data (S 340 ), and a signal processing unit  141  processes the forwarded data based upon the generated control signal or the received power signal (S 350 ). The signal processing unit  141  denotes a plurality of functional blocks for processing sending and receiving of signals with external device which are connectable to the socket unit  170 . The signal processing unit  141  may comprise an audio processing portion, a USB data processing portion, a UART data processing portion, a battery processing portion and the like, as hardware or software, according to types of external device connected to the socket unit  170 . 
     Thus, the socket unit  170  of the mobile communications terminal is connected to at least one external device for performing at least one function to thus perform the corresponding function. Here, the number of pins of the connector portion  190  of the connected at least one external device may be constructed as same as the number of pins of the socket unit  170 . 
     Conversely, when the number of pins of the connector portion  190  of the external device for performing at least one function of the data input/output function and the charging function is not constructed as same as the number of pins of the socket unit  170 , an adapter for connecting the connector portion  190  of the external device and the socket unit  170  is used. Therefore, a construction of a mobile communications terminal having a multi-functional socket in accordance with a second embodiment of the present invention will now be explained with reference to  FIG. 6 . 
       FIG. 6  is a view illustrating a construction of a multi-functional socket in accordance with a second embodiment of the present invention. 
     As illustrated in  FIG. 6 , a mobile communications terminal  600  using a multi-functional socket in accordance with a second embodiment of the present invention may include an adapter  680  connected, to a connector  690  of an external device which performs at, least one function of a data input/output function and a charging function, a socket unit  670  provided in the mobile communications terminal  600  to thus be connected to the connector  681  of the adapter  680 , a switching unit  660  for forwarding data inputted from the external device connected to the socket unit  670  to designated paths according to at least one identification signal, a controller  640  for generating at least one control signal to control the forwarded data, and a memory  630  for storing the information namely, pin mapping allocation tables for the socket unit  670  and the connector  690  of the external device connected to the socket unit  670 . 
     Here, the adapter  680  may include a first interface  681  connected to the socket unit  670  provided in the mobile communications terminal  600  and having pins arranged in a first direction, a second interface  683  connected to the first interface  681  and having pins arranged in a second direction, and a connection cable  682  for connecting the first interface  681  and the second interface  683 . The connection cable  682  is flexible member. Here, preferably, the first direction denotes a horizontal or perpendicular direction with respect to the socket unit  670  provided in the mobile communications terminal  600 , and the second direction cross at right angle with the first direction. 
     For example, regarding the adapter  680 , in order to connect the connector  690  of the external device having 24 pins to the socket unit  670 , the first interface  681  of the adapter  680  which is connected to the socket unit  670  can include 12 pins and the second interface  683  of the adapter  680  which connects the connector  690  of the external device can include 24 pins. 
     In accordance with present invention, a mobile communications terminal  600  using a multi-functional socket in accordance with a second embodiment of the present invention may include a second type of adapter  680 A as shown in  FIG. 6 . The second type of adapter  680 A can engaged with the connector  691  of a external device  690  and the socket unit  670 . The second type of adapter  680 A can match corresponding to the socket unit arranged at the other unusual location of the mobile communication terminal  600 . For example, when the socket unit  670  is arranged at the side wall of the terminal, the adapter  680 A can be connected with the socket unit  670  having the new arrangement because a first interface  681 A of the adapter  680 A can be arranged in the perpendicular direction to the longitudinal direction of the adapter  680 A, i.e. directly facing the socket unit  670  arranged at the sidewall of the terminal, as shown in  FIG. 6 . Because a connection cable  682 A and a second interface  683 A of the second type of adapter  680 A can be similarly constructed when compared to or substantially identical to the connection cable  682  and the second interface  683  of the adapter  680  as cited early, the detailed descriptions of the connection cable  682  and the second interface  683  may not be repeated. The scope of the present invention is not intended to be limited to any particular elements such as the external device or connector as described above. Moreover, the scope of the present invention may not be limited to any specific kind of external device or adapter, and other various interfaces can be considered to include the essential features of the present invention described in this. 
     Here, the construction of the mobile communications terminal using the multi-functional socket in accordance to the second embodiment of the present invention is the same as that of the mobile communications terminal using the multi-functional socket in accordance with the first embodiment of the present invention to accordingly omit a detailed explanation thereof. However, when the number of pins of the socket unit provided in the mobile communications terminal is not the same as the number of pins for the connector of the external device, how to use the adapter is different. Accordingly, pin mapping allocation tables for the adapter will now be explained with reference to  FIGS. 7A through 7E . 
       FIGS. 7A through 7E  are views illustrating pin allocation tables for a multi-functional socket in accordance with a second embodiment of the present invention. 
     As illustrated in  FIG. 7A , it can be noticed in the second embodiment of the present invention that the mobile communications terminal  600  has been connected to an equipment for performing the data input/output function when an identification signal (i.e., EAR_SENSE( 2 )) is inputted from the socket unit  670  to which the external device is connected without using the adapter  680 . Here, it can also be noticed that the data input/output function is being performed by third, fourth and fifth pins of the connector  690  of the external device. That is, EAR_M−( 3 ) denotes an audio signal inputted through a microphone. EAR_L+( 4 ) and EAR_R+( 5 ) denote audio signals outputted from left and right sides of the earphone, respectively. In addition, a remote control function is being performed by sixth, ninth and tenth pins of the connector  690  of the external device. That is, REM_VCC( 6 ) denotes a power of a remote controller, REM_INT( 7 ) denotes such that the remote control is performed according to an interrupt method, and REM_ADC( 8 ) denotes such that the remote control is performed according to an Analog Digital Converter (ADC) method. 
     As illustrated in  FIG. 7B , it can be noticed in the second embodiment of the present invention that the mobile communications terminal  600  has been connected to equipment for performing a charging function when an identification signal (i.e., BATTERY ID (LATCH)) is inputted from the socket unit  670  to which the external device is connected using the adapter  680 . Here, it can be understood that the charging function is being performed by each VPWR  11  and  12  of the connector  690  of the external device. 
     Here, the LATCH pin denotes a pin for identifying a power signal inputted from the equipment for performing the charging function, and thus can be separately provided outside the first interface  681  of the adapter  680 . 
     As illustrated in  FIG. 7C , it can be noticed in the second embodiment of the present invention that the mobile communications terminal  600  has been connected to equipment, especially a developer equipment, for performing a data input/output function when an identification signal (i.e., ON_SWITCH( 8 )) is inputted from the socket unit  670  to which the external device is connected using the adapter  680 . Here, it can be understood the connector  690  of the external device can recognize an insertion of a level converter through the ON_SWITCH( 8 ). Equipment for a UART or USB data communication can be connected to the developer equipment for use in serial. 
     As illustrated in  FIG. 7D , it can be noticed in the second embodiment of the present invention that the mobile communications terminal  600  has been connected to equipment for performing a data input/output function (i.e., a USB data communication) when an identification signal (i.e., USB_POWER( 7 )) is inputted from the socket unit  670  to which the external device is connected using the adapter  680 . Here, in the connector  690  of the external device, USB_D+( 9 ) and USB_D−( 10 ) may be allocated for the USB data communication, the USB_POWER( 7 ) denotes the identification signal or a battery charging through the USB, the USB_D+ denotes a sending of USB data, and the USB_D− denotes a receiving of the USB data. Because of allocating the same pin number for the USB communication or the UART communication, the adapter  680  may have a separate switch to redirect the USB or UART data to designated paths according to the identification signal (i.e., USB_POWER( 7 )). 
     Here, the adapter  680  may be provided with a separate charging Integrated Circuit (IC) for converting the USB power into a battery power of the mobile communications terminal  600  so as to enable a charging of the battery of the mobile communications terminal  600  using the USB power. 
     As illustrated in  FIG. 7E , it can be noticed in the second embodiment of the present invention that the mobile communications terminal  600  has been connected to equipment for performing a data input/output function which is set to a default, namely, the UART data communication, when any identification signal is not inputted from an arbitrary pin of the socket unit  670  to which the external device  690  is connected using the adapter  680 . Here, in the connector  690  of the external device, TXD( 9 ) and RXD( 10 ) may be allocated for the UART communication, wherein the TXD denotes a sending of the UART data and the RXD denotes a receiving of the UART data. 
     Thus, the mobile communications terminal  600  according to the second embodiment of the present invention generally provides the pin mapping allocation table for the equipment which is connected to the socket unit  670  and performs the data input/output function, and the pin mapping allocation table for the equipment which is connected to the second interface  682  of the adapter  680  and performs the data input/output function and the charging function by connecting the adapter  680  to the socket unit  670 . Therefore, a principle for forwarding signals outputted from the socket unit  670  will now be explained with reference to  FIG. 8 . 
       FIG. 8  is a view illustrating an, operational principle of a switching unit in accordance with a second embodiment of the present invention. 
     As illustrated in  FIG. 8 , regarding the switching unit  660  in accordance with the second embodiment of the present invention, it can be noticed that a first switch  661  forwards data inputted from the socket unit  670  to paths corresponding to the equipment for performing the data input/output function based upon the EAR_SENSE signal, and then a second switch  662  forwards the data forwarded by the first switch  661  to paths corresponding to the UART and USB data communications based upon the USB_POWER signal. 
     Furthermore, when the number of pins of a connector  690  of the external device for performing at least one function of a data input/output function and a charging function is not constructed as same as the number of pins of the socket unit  670 , an adapter  680  can connect the connector  690  of the external device with the socket unit  670 . In addition, a first device to perform the data input/output function, and a second device to manage the charging function can simultaneously be connected to the adapter for further use. For the construction, the adapter  680  can comprise not only first and second interfaces  681 ,  682  but also a third connector having pins arranged in a first direction or second direction. Hence, a construction of a mobile communications terminal using a multi-functional socket in accordance with a third embodiment of the present invention will now be explained with reference to  FIG. 9 . 
       FIG. 9  is a view illustrating a construction of a mobile communications terminal using a multi-functional socket in accordance with a third embodiment of the present invention. 
     As illustrated in  FIG. 9 , a mobile communications terminal  900  using a multi-functional socket in accordance with a third embodiment of the present invention may include an adapter  980  connected to connector  990  of at least two external devices which perform at least one function of a data input/output function and a charging function. Here, the adapter  980  may include at least two female interfaces  983  and  984  respectively receiving a connector  990  of at least two external devices, and a male interface  981  connected to the socket unit  970 . 
     Furthermore, the adapter  980  can have different arrangements of the female interfaces as shown in  FIG. 9 . For example, a different type of adapter  980 A can include a first female interface  983 A having a direction of orientation perpendicular to (or in any different angle) that of the second female interface  983 B in accordance with the present invention. This arrangement can prevent two external devices from interfering with each other when connected to the adapter  980 A. 
     Explanation for the mobile communications terminal using the multi-functional socket in accordance with the third embodiment of the present invention is the same as that in accordance with the second embodiment of the present invention, and thus a detailed explanation for the mobile communications terminal using the multi-functional socket in accordance with the third embodiment of the present invention will be omitted. Pin allocation tables of the extended socket unit in accordance with the third embodiment of the present invention will now be explained with reference to  FIGS. 10A through 10F . 
       FIGS. 10A through 10F  are views illustrating pin allocation tables for a multi-functional socket in accordance with a third embodiment of the present invention. 
     As illustrated in  FIGS. 10A and 10B , it can be noticed in the third embodiment of the present invention that the mobile communications terminal  900  has been connected to both equipment for performing the data input/output function and equipment for performing the charging function when detecting identification signals (i.e., EAR_SENSE( 2 ) and BATTERY ID (LATCH)) inputted from the socket unit  970  to which the at least two external device are connected. Here, in the connector of the external device which performs the data input/output function, the data input/output is performed by EAR_M−( 3 ), EAR_L+( 4 ) and EAR_R+( 5 ), a remote control is performed by REM_VCC( 6 ), REM_INT( 9 ) and REM_ADC( 10 ), and a charging function is performed by each VPWR ( 11 , 12 ) in the connector of the equipment which performs the charging function, all of which functions are simultaneously performed. 
     Here, the connector GND( 1 ) of the equipment for performing the charging function, which is represented by a thick line, a connector GND( 1 ) of the equipment for performing the data input/output function, and a interface BATTERY ID(LATCH) of the adapter  980  must all be opened. Accordingly, after connecting the equipment for performing the charging function to the adapter  980 , when the adapter  980  is connected to the socket unit  970  of the mobile communications terminal  900 , it may be possible to prevent an error of an unsuccessful charging which may occur due to non-recognition of a battery. 
     For example, the user connects both a charger and an earphone to the interfaces  983  and  984  of the adapter  980  to thus enable the charging for power of the mobile communications terminal  900  using the charger and the communicating with another party or listening to music using the earphone. 
     As illustrated in  FIGS. 10C and 10D , it can be noticed in the third embodiment of the present invention that the mobile communications terminal  900  has been connected to the equipment for performing the charging function, and the equipment for performing the data input/output function when detecting identification signals (i.e., BATTERY ID (LATCH) and USB_POWER( 7 )) inputted from the socket unit  970  to which the several equipment are connected. Here, a data input/output is performed by EAR_M−( 3 ), EAR_L+( 4 ) and EAR_R+( 5 ) in the connector of a first external device which performs the data input/output function, one of USB and UART data communication functions is performed by USB_D+/TXD( 9 ) and USB_D−/RXD( 10 ) in the connector of a second external device which performs the data input/output function, all of which functions are simultaneously performed. However, the ninth and tenth pins are equally allocated the remote control and one of the USB and UART data communications to thus be selected by a separate switch. 
     As illustrated in  FIGS. 10E and 10F , it can be noticed in the third embodiment of the present invention that the mobile communications terminal  900  has been connected to the equipment for performing the charging function and the equipment for performing the data input/output function when detecting the identification signals (i.e., BATTERY ID (LATCH) and USB_POWER( 7 )) inputted from the socket unit  970  to which the several equipment are connected. Here, the charging function is performed by each VPWR( 11 ,  12 ) in the connector of the external device which performs the charging function, and one of USB and UART data communications is performed by USB_D+/TXD( 9 ) and USB_D−/RXD( 10 ) in the connector of the external device which performs the data input/output function, all of which functions are simultaneously performed. 
     As described above, regarding the mobile communications terminal using the multi-functional socket according to the present invention and the method thereof, by implementing one socket unit for receiving at least one of the power signal and the data from the external device connected thereto, all of the data input/output function and the charging function can be performed by the one socket unit, so as to enable a minimization of the size of the mobile communications terminal. 
     In accordance with the present invention, a mobile communications device may comprise: a display unit; a connector capable of connecting the mobile communications device to at least one external device for establishing an electrical connection between the at least one external device and the mobile communications device; a switching unit; and a controller cooperating with the connector and the switching unit to perform, sending and/or receiving at least one signal with respect to the at least one external device via at least one dedicated path according to at least one identification signal; and generating a control signal to control the at least one signal, wherein the at least one signal comprises at least one of a power signal and data. The connector can comprise a plurality of first contacts, and wherein the at least one external device comprises an interface portion shaped in a configuration to include a plurality of second contacts and to connect the plurality of first contacts to the plurality of second contacts. 
     The device can include a memory device for storing contacts mapping allocation tables for at least one of the plurality of first and second contacts and storing an identity of the at least one external device. The switching unit may include: a first switch directing a portion of the data corresponding to the first external device performing the data input/output function via a first designated path based upon a first identification signal, and a second switch directing a portion of the data corresponding to the second external device performing the data input/output function via a second designated path based upon a second identification signal, wherein the data comprises at least one of a call connection signal, a call receiving signal, a general device controlling signal, a computer file, a text data, a Universal Serial. Bus (USB) data, and Universal Asynchronous Receiver/Transmitter (UART) data and a multimedia data. 
     The mobile communications device may further comprise a signal processing unit to process the directed data based upon the generated control signal, the signal processing unit comprising a plurality of functional modules for sending and receiving the data with respect to the at least one external device. The connector can be configured to connect the mobile communications device to the at least one external device for establishing an electrical connection between the at least one external device and the mobile communications device via an adapter having a first interface portion capable of being connected to the connector and a second interface portion capable of being connected to a connector portion of the at least one external device. In addition, the connector can be configured to connect the mobile communications device to two external devices for establishing an electrical connection between the two external devices and the mobile communications device respectively via an adapter having a first interface portion capable of being connected to the connector, a second interface portion capable of being connected to a connector portion of a first external device, and a third interface portion capable of being connected to a connector portion of a second external device. Here, the identification signal can comprise a signal from at least one pin of the connector to which a connector portion of the at least one external device is adapted to be connected in order to identify the at least one external device. The first interface portion can further include at least one pin for identifying a power signal inputted from the at least one external device capable of providing the power signal to the mobile communications device. The mobile communications device may comprise one of a mobile wireless phone, a Personal Digital Assistant (PDA), a notebook, and a Portable Multimedia Player (PMP). 
     In accordance with the present invention, a method for using a multi-functional connector of a mobile terminal may comprise: connecting at least one external equipment to the mobile terminal and establishing an electrical connection between the terminal and the equipment; determining whether to receive and send data between the at least one external equipment and the mobile terminal, or receive at the mobile terminal a power signal from an external equipment; processing the power signal if the mobile terminal is determined to receive the power signal; and directing the data to at least one designated path corresponding to at least one identification signal and generating at least one control signal to control directed data based upon the determining to receive and send the data. The method can further comprise: receiving the identification signal to identify the at least one external device, the identification signal comprising a signal from at least one pin of the connector to which a connector portion of the at least one external device is adapted to be connected. 
     The method may direct a portion of the data corresponding to a first external device performing the data input/output function via a first designated path according to a first identification signal; and direct a portion of the data corresponding to the second external device performing the data input/output function via a second designated path according to a second identification signal, wherein the data comprises at least one of a call connection signal, a call receiving signal, a general device controlling signal, a computer file, a text data, a Universal Serial Bus (USB) data, and Universal Asynchronous Receiver/Transmitter (UART) data and a multimedia data. 
     Additionally, the method can simultaneously process the power signal and direct the data to at least one designated path corresponding to at least one identification signal upon detecting the mobile terminal connected to a first external device for providing the power signal to mobile terminal and a second external device for performing the data input/output function. The method can comprise storing electrical contacts mapping allocation tables for at least one of a first external device for providing the power signal to mobile terminal, and a second external device for performing the data input/output function external; and storing an identity of at least one of the first and second external devices. 
     Furthermore, at least one of the plurality of electrical contacts can be adapted to be allocated for one of charging a battery of the mobile terminal, providing a power supplied via a USB, sending and receiving of USB data, sending and receiving UART data, sending and receiving a Clear To Send (CTS) signal, sending and receiving Ready To Send (RTS) signal, and indicating whether the at least one external device is connected to the mobile terminal. 
     As described above, there can an adapter for a mobile communications terminal, comprising: a main housing; a first aligning portion extending beyond a first surface of the main housing in a first direction; a plurality of first electrical contacts supported by the first aligning portion; and a plurality of second electrical contacts disposed along a second aligning portion spaced apart from the first aligning portion, the second aligning portion extending beneath a second surface of the main housing in a second direction. The first aligning portion may include an inner surface and an outer surface and the plurality of first electrical contacts are arranged at one of the inner surface and the outer surface. 
     The adapter can further comprise a plurality of third electrical contacts disposed along a third aligning portion spaced apart from the first aligning portion and the second aligning portion, wherein the third align portion are extending beneath of a third surface of the main housing in a third direction. At least one set of the plurality of the first, second and third electrical contacts can be adapted to mate with a connector of at least one electrical device. Here, the first, second and third direction can be one of parallel to one another and respectively different from one another. Furthermore, the adapter may include an indicator showing whether at least one of a mobile communications terminal and an external electrical device is connected to the adapter. 
     In accordance with the present invention, a system can comprise at least one external equipment comprising a connector portion; and a mobile communications terminal comprising, a connector capable of connecting the mobile communications terminal to the at least one external equipment; a switching unit; and a controller cooperating with the connector and the switching unit to perform, sending and/or receiving at least one signal with respect to the at least one external equipment via at least one dedicated path according to at least one identification signal; and generating a control signal to control the at least one signal, wherein the at least one signal comprises at least one of a power signal and data. 
     The system also can include an adapter comprising, a main housing; a first aligning portion extending beyond a first surface of the main housing in a first direction; a plurality of first electrical contacts supported by the first aligning portion; and a plurality of second electrical contacts disposed along a second aligning portion spaced apart from the first aligning portion, the second aligning portion extending beneath a second surface of the main housing in a second direction, wherein at least one set of the plurality of the first and second electrical contacts is adapted to mate with one of the connector portion of the at least one external equipment and the connector of the mobile communications terminal. 
     As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalents of such metes and bounds are therefore intended to be embraced by the appended claims.