KR101512042B1 - Mobile terminal - Google Patents

Abstract

The present invention relates to a portable terminal having a multifunctional extension module interface, and a portable terminal having a multifunctional extension module interface. The portable terminal includes a terminal body having a connection connector exposed to one side of the case, and a storage unit capable of housing the terminal body, And an extension module for providing an additional function to the terminal body, the connector having a first pin for authenticating the expansion module through 1-Wire communication, And a second pin and a third pin for performing the serial communication with the extension module to receive the additional function when the extension module is authenticated.

A portable terminal, a multifunction expansion module, an interface, a connector,

Description

[0001]

The present invention relates to a portable terminal capable of expanding a variety of additional functions desired by a user by separately providing an extension module that can be electrically connected to each other in addition to a terminal main body so as to supplement the limited functionality of existing portable terminals will be.

A portable terminal is a portable device having one or more functions capable of performing voice and video communication, capable of inputting and outputting information, and storing data, while being portable.

In a limited space inside the portable terminal case, various electronic devices for realizing basic functions such as audio / video reproduction and display, information input / output, and data storage are provided on a printed circuit board (main board and sub board) Such as a microphone, a speaker, a liquid crystal panel, a camera, a keypad, a touch pad, a memory, etc., are integrated and peripheral accessories such as a frame for supporting the portable terminal are disposed. It is difficult to implement various functions according to the symbols.

Accordingly, it is an object of the present invention to provide a portable terminal capable of expanding various functions desired by the user by supplementing the limited functionality of existing portable terminals.

According to an aspect of the present invention, there is provided a portable terminal including a terminal body having a connection connector exposed to one side of a case, and a storage unit capable of receiving the terminal body, And an extension module for providing an additional function to the terminal body, wherein the connection connector includes: a first pin for authenticating the extension module via 1-Wire communication; And a second pin and a third pin for performing the serial communication with the expansion module to receive the additional function when the extension function is performed.

In addition, the serial communication may be any one of I2C communication and UART communication.

In addition, the terminal body may authenticate the expansion module via 1-Wire communication via the first pin when a signal of a first logic level is input through the first pin, Level signal, the communication with the extension module can be terminated.

Also, the terminal body may indicate a connection state with the expansion module when the signal of the first logic level is inputted through the first pin.

Also, in the acoustic output mode, it is possible that the audio signal is transmitted via the second and third pins.

In addition, the connection connector may further include a fourth pin for transmitting a wake-up signal while the terminal main body is in the power saving mode.

In addition, the connection connector may further include a fifth pin and a sixth pin for performing USB communication.

The connection connector may further include a seventh pin to which a ground power is connected, and an eighth pin used as a power supply terminal.

According to the portable terminal of the present invention, in addition to the main body of the mobile terminal, an extension module which can be electrically connected to the portable terminal can be accommodated, thereby supplementing the limited functionality of the existing portable terminal and expanding additional functions desired by the user .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of a terminal main body according to the present invention, a multifunctional accessory (extension module) and an interface thereof applied thereto, and an organic operation principle between them will be described in detail with reference to the accompanying drawings.

1 to 7 illustrate a functional configuration included in a terminal main body according to the present invention and an interface configuration applied to such a terminal main body. FIG. 1 is a functional configuration of a terminal main body 100 according to the present invention, FIG. 2 is a block diagram illustrating an organic control system according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating the functional configuration of the terminal main body 100 according to the present invention and the arrangement of each component of the extension module 200 performing various additional functions FIG. 3 is a rear perspective view showing an example of the arrangement of each component for realizing the functional configuration of the terminal main body 100 according to the present invention, FIG. 4 is an enlarged perspective view showing an extension 5 is an exploded perspective view of the terminal main body 100 showing an example of the arrangement structure of the connector 260 (261) of the terminal main body 100 for performing an electrical connection function with the module 200. Fig. 6 is a schematic circuit diagram for explaining the interface structure between the terminal main body 100 and the expansion module 200 applied to the present invention. Pin connection structure, and FIG. 7 is a time-input / output level graph for explaining the operation of the ID pin implemented by the present invention.

The terminal main body described in this specification includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (personal digital assistant), a portable multimedia player (PMP), navigation and the like.

FIG. 1 is a block diagram of a terminal main body according to an embodiment of the present invention. Referring to FIG. 1, the terminal main body 100 included in the present invention will be described in terms of components according to functions .

1, a terminal body 100 according to the present invention includes a wireless communication unit 110, an audio / video (A / V) input unit 120, a user input unit 130, a sensing unit 140, A memory unit 160, an interface unit 170, a control unit 180, and a power supply unit 190. The memory unit 160 may include a display unit 150, a memory 160, These components may be composed of two or more components as a single component, or one component may be subdivided into two or more components as needed in actual application.

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 113, a wireless Internet module 115, a short distance communication module 117, and a GPS module 119.

The broadcast receiving module 111 receives at least one of a broadcast signal and broadcast related information from an external broadcast management server through a broadcast channel. At this time, the broadcast channel may include a satellite channel, a terrestrial channel, and the like. The broadcast management server may refer to a server for generating and transmitting at least one of a broadcast signal and broadcast related information and a server for receiving at least one of the generated broadcast signal and broadcast related information and transmitting the broadcast signal to the terminal.

The broadcast-related information may be information related to a broadcast channel, a broadcast program, or a broadcast service provider, and may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 113, For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H). In addition, the broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV or radio broadcast signal.

The broadcast receiving module 111 receives broadcasting signals using various broadcasting systems. In particular, the broadcasting receiving module 111 may be a digital multimedia broadcasting (DMB-T), a digital multimedia broadcasting-satellite (DMB-S) Only Digital Broadcasting-Handheld (DVB-H), Integrated Services Digital Broadcasting-Terrestrial (ISDB-T), and the like. In addition, the broadcast receiving module 111 may be configured to be suitable for all broadcasting systems that provide broadcasting signals, as well as the digital broadcasting system. The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 113 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to a voice call signal, a video call signal, or a text / multimedia message transmission / reception.

The wireless Internet module 115 is a module for wireless Internet access, and may be built in or enclosed in the terminal main body 100.

The local area communication module 117 is a module for local area communication. The local area communication technology includes Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), UWB Wideband, Zig Bee, and the like can be used.

A GPS (Global Position System) module 119 receives position information from a plurality of GPS satellites.

The A / V (Audio / Video) input unit 120 is for inputting audio or video signals, and may include a camera 121 and a microphone 123. The camera 121 processes an image frame such as a still image or moving image obtained by the image sensor in a video communication mode or a photographing mode and the processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

The microphone 123 receives an external sound signal by a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 113 and output when the voice data is in the call mode. The microphone 123 may use various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 130 generates key input data that the user inputs for controlling the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (static / static), a jog wheel, a jog switch, a finger mouse, and the like. Particularly, when the touch pad has a mutual layer structure with the display unit 151 to be described later, it can be called a touch screen.

The sensing unit 140 senses the current state of the terminal main body 100, such as the open / closed state of the terminal main body 100, the position, presence or absence of user touch, and generates a sensing signal for controlling its own operation. For example, when the terminal body 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, a sensing function related to whether or not the power supply unit 190 is powered on, whether the interface unit 170 is coupled to an external device, and the like can be handled.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, an audio output module 153, and an alarm unit 155.

The display unit 151 displays and outputs information processed by the terminal main body 100. For example, when the terminal main body 100 is in the call mode, a UI (User Interface) or GUI (Graphic User Interface) associated with the call is displayed. When the terminal main body 100 is in the video call mode or the photographing mode The captured or received images can be displayed individually or simultaneously, and the UI or GUI is displayed.

Meanwhile, in the case where the display unit 151 and the touch pad have a mutual layer structure to constitute a touch screen as described above, the display unit 151 may be used as an input device in addition to the output device. In the case where the display unit 151 is configured as a touch screen, the touch screen panel may include a touch screen panel, a touch screen panel controller, and the like. The touch screen panel is a transparent panel that is attached to the outside, ) To the internal bus. The touch screen panel monitors the touch result and sends corresponding signals to the touch screen panel controller when there is a touch input. The touch screen panel controller processes the signals and transmits corresponding data to the controller 180, The control unit 180 can know information about whether or not a touch input was made, whether an area of the touch screen is touched, and the like.

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (LCD), an organic light emitting diode (OLED), a flexible display, And a three-dimensional display (3D display). There may be two or more display units 151 according to the embodiment of the terminal main body 100. For example, the external display unit and the internal display unit may be provided in the terminal body 100 at the same time.

The sound output module 153 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, In addition, the sound output module 153 outputs sound signals related to functions performed in the terminal main body 100, that is, call signal reception tones, message reception tones, and the like. The sound output module 153 may include a speaker or a buzzer.

The alarm unit 155 outputs a signal for notifying the occurrence of an event of the terminal main body 100. Examples of events generated in the terminal main body 100 include call signal reception, message reception, key signal input, and the like. The alarm unit 155 outputs a signal for informing occurrence of an event in a form other than an audio or video signal. For example, it is possible to output a signal in a vibration mode. When a call signal is received or a message is received, the alarm unit 155 may output a vibration to notify it. Alternatively, when the key signal is input, the alarm unit 155 can output the vibration by the feedback to the key signal input. With this vibration output, the user can recognize the occurrence of an event. Of course, a signal for notifying the occurrence of an event may also be output through the display unit 151 or the sound output module 153. [

A program for processing and controlling the controller 180 may be stored in the memory 160 and may be stored in the memory 160 for temporary storage of data such as input / output data, i.e., a phone book, a message, Function may be performed.

The memory 160 may be a memory of a card type such as a flash memory type, a hard disk type, a multimedia card micro type, an SD or an XD memory, a RAM, And may include at least one type of storage medium. Also, the terminal main body 100 may operate a web storage that performs a storage function of the memory 150 on the Internet.

The interface unit 170 serves as an interface with all the external devices connected to the terminal main body 100. Examples of the external device connected to the terminal main body 100 include a card socket such as a wired / wireless headset, an external charger, a wired / wireless data port, a memory card, a SIM / UIM card, / Output, Video I / O, or Earphone. The interface unit 170 may transmit data from the external device or supply power to each component in the terminal main body 100 and may transmit data in the terminal main body 100 to an external device have.

The control unit 180 controls the overall operation of the terminal main body 100 by controlling the operation of each device unit. For example, for voice calls, data communications, video calls, and the like. In addition, the control unit 180 may include a multimedia playback module 181 for multimedia playback. The multimedia playback module 181 may be configured in hardware in the controller 180 or in software separate from the controller 180. [

The power supply unit 190 applies external power or internal power under the control of the controller 180 to supply power required for operation of each component.

Hereinafter, the portable terminal related to the present invention will be described with reference to FIGS. 2 to 4 by referring to the components according to the outline of the present invention, We will look at it from the point of view. Hereinafter, among the various types of terminal bodies such as a folder type, a bar type, a swing type, or a slider type, a bar type terminal body 100 having a touch screen on the front will be described as an example for convenience of explanation. The present invention is not limited to the bar type terminal body but can be applied to all types of terminal bodies including the above-mentioned types.

The portable terminal of the present invention includes a terminal body 100 which can implement various functions as described above and in which a connector 260 for external connection is exposed to one side of the case 100A-1, 100A-2, And a connector 250 which is in contact with the connector 260 and is in contact with the connector 260 at one side of the housing part 210. The extension part 210 includes a housing part 210 capable of housing the terminal body 100, (200).

FIG. 2 illustrates an example of an arrangement of a terminal body 100 according to an embodiment of the present invention and an extension module 200 that can receive the terminal body 100 electrically connected thereto. Is formed by the front case 100A-1 and the rear case 100A-2. Various electronic components are incorporated in the space formed by the front case 100A-1 and the rear case 100A-2. At least one intermediate case may be additionally disposed between the front case 100A-1 and the rear case 100A-2. In this way, the cases may be formed by injection molding of synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The display unit 151, the first sound output module 153a, the first camera 121a, and the first user input unit 130a may be disposed in the front case 100A-1. The second user input unit 130b, the third user input unit 130c, the microphone 123, and the connector 260 may be disposed on the side of the rear case 100A-2.

The display unit 151 includes a liquid crystal display (LCD) or an organic light emitting diode (OLED) for visually expressing information. The display unit 151 may be configured to be operated as a touch screen so that information can be input by the user's touch by overlapping the touch pad with the layer structure in the display unit 151. [

The first sound output module 153a may be implemented in the form of a receiver or a speaker, and the first camera 121a may be configured to appropriately photograph an image or a moving picture for a user or the like.

A command for controlling the operation of the terminal main body 100 is inputted through the first to third user input units 130a, 130b and 130c, and is connected to the joystick key, the touch pad, the track ball, the pointing stick, An input key having a function corresponding to a mouse function may be further provided. That is, the first to third user input units 130a, 130b and 130c and the fourth and fifth user input units 130d and 130e, which will be described later, can be collectively referred to as a 'user input unit 130' , That is, any means that allows the user to operate with a tactile sense (Tactile Means) can be employed. For example, the user input unit 130 may be implemented by a dome switch or a touch pad capable of inputting a command or information by a push or touch operation of the user, or may be a wheel, a jog type, a joystick, As shown in FIG.

In terms of functions, the first user input unit 130a is for inputting commands such as start, end, and scroll, numbers, characters, or symbols, and the second user input unit 130b is for inputting commands, Quot; Hot Key " for activating the special function in the < / RTI >

The microphone 123 may be implemented in a form suitable for inputting user's voice, other sounds, and the like.

The connector on the terminal body 100 may be constituted by, for example, two pairs of 4 pins and one pair of 8 pins, and the connection pins are exposed on the side surface of the rear case 100A-2 In addition, various types of connectors can be constructed. This connector 260 is provided with a lead-in connector 261 on one side of a circuit board 101 mounted in the front case 100A-1, as shown in an exploded perspective view of the terminal body 100 shown in Fig. 2 is provided at the corresponding position of the rear case 100A-2 which abuts the lead-in connector 261 of the front case 100A-1 when the front case 100A-1 and the rear case 100A-2 are assembled And a connector 260 for the connector. Thus, a connection terminal capable of sending and receiving an electrical signal from the side of the circuit board 101 in the main body 100 to the outside can be taken out.

3, the fourth user input unit 130d, the fifth user input unit 130e, and the interlace unit 170 may be disposed on the side of the rear case 100A-2, and the rear case 100A- 2 may be further provided with a second camera 121b.

The second camera 121b may have a photographing direction substantially opposite to that of the first camera 121a and may have different pixels between the two cameras. For example, the first camera 121a may be configured as a low-level pixel to the extent that there is no problem in capturing a user's face and immediately transmitting the face of the user to the other party in case of a video call or the like. The second camera 121b, It is preferable to use a high-resolution pixel which is suitable for the case where it is not necessary to transmit the image immediately.

A flash 125 and a mirror 126 may be further disposed adjacent to the second camera 121b. The flash 125 illuminates the subject when the subject is photographed by the second camera 121b. The mirror 126 allows the user to illuminate the user's own face or the like when the user intends to take a picture of himself / herself (self-photographing) using the second camera 121b.

A second sound output module (not shown) may be further disposed in the rear case 100A-2. The second sound output module may implement the stereo function together with the first sound rendering module 153a, and may be used for talking in the speakerphone mode. In addition, an antenna (not shown) for receiving broadcast signals may be disposed on one side of the rear case 100A-2, in addition to an antenna for communication. The antenna may be installed to be capable of being drawn out from the rear case 100A-2.

The interface unit 170 is a path for allowing the terminal main body 100 according to the present invention to exchange data with an external device. For example, the interface unit 170 may be at least one of a connection terminal for connection to an earphone or a cordless earphone, a port for short-range communication, or a power supply terminal for supplying power to the terminal main body 100 , A user authentication module such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module), or a card socket for accommodating an external card such as a memory card for information storage.

A power supply unit 190 for supplying power to the terminal main body 100 is mounted on one side of the second rear case 100B-2. The power supply unit 190 refers to a rechargeable battery or the like, and may be detachably coupled to the rear case 100A-2 for the purpose of charging.

In the above description, the second camera 121b and the like are disposed in the rear case 100A-2, but the present invention is not limited thereto. In addition, if the first camera 121a is configured to be rotatable, it is possible to take a multi-directional image even if the second camera 121b is not separately provided.

2, the extension module 200 detachably coupled to the terminal main body 100 of the present invention includes a housing 210 and a terminal body 210 And a hinge portion 220 connecting the housing portion 210 and the lid portion 220 so that the lid portion 220 is pivotable on the housing portion 210 230).

A through hole 212 for exposing the second camera 121b, the flash 125 and the mirror 126 on the rear case 100A-2 side of the terminal main body 100 to the outside And the lid part 220 is also formed with a through hole 223a so that the first sound output module 153a on the front case 100A-1 side of the terminal main body 100 can be opened to the outside.

A connector 250 of the extension module 200 which can be connected to the connector 260 of the main body 100 when the terminal main body 100 is housed is provided at one side of the housing part 210 adjacent to the hinge part 230. [ And a fixing hook 213 for detachably attaching the terminal main body 100 is formed on the inner side surface of the accommodating portion 210. [ 3, a holder 273 is provided on the outer surface of the rear case 100A-2 of the terminal main body 100 to receive and fix the fixing hook 213, as shown in FIG. The other end of the receiving portion 210 is provided with a slot for exposing the fourth and fifth user input portions 130d and 130e and the interface portion 170 or the holder grip 271 of the terminal body 100. [ (211) may be formed.

The holder 273 is operated by a spring (not shown) provided inside the rear case 100A-2 so as to have a tendency to be restored to the home position after being elastically flown, The fixing hook 213 of the extension module 200 can be locked or released by the forward and backward operation of the holder grip 271 provided on one side of the rear case 100A-2.

On the inner side of the lid part 220 is provided a variety of input devices such as a keypad, a touchpad, a speaker (mainly external), a game pad, a display, a projector or an input / And may include and apply any external accessories to implement additional functionality. FIG. 2 shows a case where extended input keypads are arranged as an example.

The outer cover 240 made of natural leather, artificial leather, synthetic resin, metal, or the like may be attached to the outer surface of the receiving part 210 and the cover 220 to provide a decorative property so that more sophisticated aesthetics can be exhibited .

5 shows a signal connected to the connector 260 connected to the extension module 200 in the main body 100 of the terminal. Referring to FIG. 5, a battery (+) power source is connected to the first pin. The battery power of the terminal main body 100 can be supplied to the extension module 200 through the first pin.

Pin 2 is used as an ID pin. The terminal body 100 can distinguish whether the extension module 200 is connected or not and the type of the extension module 200 when the extension module 200 is connected according to a signal input through pin No.2 that is an ID pin.

Pin 3 is used as an interrupt pin. When the terminal main body 100 is in the super power saving mode, the wake-up signal may be transmitted from the expansion module 200 to the terminal main body 100 through the third pin.

Pin 4 and pin 5 are used for communication between the terminal body 100 and the expansion module 200. That is, in the case of IC2 communication, the SDA signal and the SCL signal can be transmitted / received through pin # 4 and pin # 5. In case of UART communication, TX and RX signals can be transmitted and received through pins 4 and 5. Depending on the type of the extension module 200, an audio signal may be transmitted through pins 4 and 5.

Pin 6 and pin 7 are used for USB (Universal Serial Bus) communication and pin 8 is used as a ground line.

6 and 7 are diagrams for explaining the operation between the terminal body 100 and the expansion module 200 in more detail. First, when the terminal body 100 and the expansion module 200 are coupled, the ID pin is connected as shown in FIG. In this connection state, the level of the GPIO terminal of the terminal main body 100 is changed from the low level to the high level by pulling up through the resistor R2 of the extension module 200. [ Accordingly, the terminal main body 100 recognizes that the expansion module 200 is connected (1 in Fig. 7)

After the 1-Wire communication is set up, the terminal main body 100 checks the ID for authentication (② in FIG. 7). At this time, an interrupt mask can be applied to the ID pin at the extension module 200 for stable checking. The terminal main body 100 checks the ID and reads the ROM data in the expansion module 200 when the authentication is completed, and grasps the type of the expansion module 200 ((3) in FIG. 7).

When the authentication and the type of the extension module 200 are recognized, the communication between the terminal body 100 and the extension module 200 is performed. The ID pin maintains the high level during communication between the terminal main body 100 and the expansion module 200 ((4) in Fig. 7)

When the extension module 200 is disconnected from the terminal main body 100, the level of the GPIO terminal changes from a high level to a low level due to pull-down resistance of the terminal main body 100, It is recognized that the mobile phone 200 is disconnected (⑤ in FIG. 7).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. It is to be understood that such equivalent embodiments are also intended to be included within the scope of the appended claims. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

FIG. 1 is a block diagram illustrating a functional configuration of a terminal main body according to the present invention and an organic control system therebetween.

FIG. 2 is an exploded perspective view showing an example of the arrangement of the components of the extension module for performing the functional configuration of the terminal main body according to the present invention and various additional functions.

3 is a rear side perspective view showing an example of the arrangement of each component for realizing the functional configuration of the terminal main body according to the present invention.

4 is an exploded perspective view of a terminal body showing an example of an arrangement structure of a terminal body side connector for performing an electrical connection function with an extension module applied to the present invention.

5 is a schematic signal circuit diagram for explaining an interface structure between a terminal body and an expansion module according to the present invention.

6 is a schematic circuit diagram for illustrating an ID pin connection structure between a terminal main body and an extension module according to the present invention.

7 is a time-input / output level graph for explaining the operation of the ID pin implemented by the present invention.

Description of the Related Art

100; A terminal main body 100A-1; Front case

100A-2; Rear case 101; Circuit board

105; A broadcasting signal transmission antenna 110; Wireless communication section

111; Broadcast receiving module 113; Mobile communication module

115; Wireless Internet module 117; Local communication module

119; GPS module 120; A / V input section

121; A camera 121a; The first camera

121b; A second camera 123; MIC

125; Flash 126; mirror

130; A user input unit 130a; A first user input

130b; A second user input unit 130c; The third user input

130d; A fourth user input unit 130e; The fifth user input

140; A sensing unit 150; Output portion

151; A display unit 153; Sound Output Module

153a; A first sound output module 155; Alarm part

160; Memory 170; The interface unit

180; A control unit 181; Multimedia playback module

190; A power supply 191; Passage

200; Extension module 210; A storage section

211; Slot 212; Passage

213; A fixed hook 220; The lid portion

223a; Through hole 230; Hinge

240; An outer cover 250, 260, 261; connector

270; A detachable operation portion 271; Holder grip

273; holder

Claims (8)

A terminal body in which the connection connector is exposed to one side of the case; And A lid part which can cover the front surface of the terminal main body after housing the terminal main body in the receiving part; And an expansion module having a hinge for connecting the lead portion and the cover portion and having a connector which is in contact with the connection connector on one side of the housing portion to provide an additional function to the terminal body, Wherein the connection connector comprises: a first pin for authenticating the extension module via 1-Wire communication; a second pin for serial communication with the extension module when the extension module is authenticated to receive the additional function; And a fourth pin for transmitting a wake-up signal from the expansion module to the terminal body when the terminal body is in the power save mode. The method according to claim 1, Wherein the serial communication is one of I2C communication and UART communication. The method according to claim 1, Wherein the terminal body authenticates the expansion module via 1-Wire communication via the first pin when a signal of a first logic level is input via the first pin, And terminates communication with the expansion module when a signal is input. The method of claim 3, Wherein the terminal body displays a connection state with the expansion module when a signal of the first logic level is inputted through the first pin. The method according to claim 1, Wherein in the audio output mode, audio signals are transmitted through the second and third pins. The method according to claim 1, And a keypad or a touch pad is provided on an inner surface of the lid unit. The method according to claim 1, Wherein the connection connector further comprises a fifth pin and a sixth pin for performing USB communication. The method according to claim 1, Wherein the connection connector further comprises a seventh pin to which a ground power is connected, and an eighth pin used as a power supply terminal.

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