KR101604680B1 - Mobile terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a mobile terminal and a control method thereof, in which usage of a terminal can be realized by further considering convenience of a user. According to at least one of the embodiments of the present invention, it is possible to minimize the inconvenience in use of the mobile terminal when it is necessary to cancel the wireless communication connection between the mobile terminal and the external device irrespective of the intention of the terminal user The wireless communication can be disconnected at a time point when the wireless communication is established.

Description

[0001] MOBILE TERMINAL AND METHOD FOR CONTROLLING THE SAME [0002]

The present invention relates to a mobile terminal and a control method thereof, in which usage of a terminal can be realized by further considering convenience of a user.

The terminal can move And can be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

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

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

Recently, a mobile terminal has a function of establishing a wireless communication connection with an external device through a short distance communication, for example. The external device may be a convenience device related to utilization of the mobile terminal, such as a headset, or may be another mobile terminal. However, when it is necessary to cancel the wireless communication connection between the mobile terminal and the external device irrespective of the intention of the terminal user, when the inconvenience of the use of the mobile terminal is minimized, Need to be.

Disclosure of Invention Technical Problem [8] The present invention has been made in view of the above-mentioned need, and it is an object of the present invention to minimize the inconvenience in use of the mobile terminal when the need arises to release the wireless communication connection between the mobile terminal and the external device, And the control method of the mobile terminal is provided.

According to an aspect of the present invention, there is provided a wireless communication system including a user input unit, a display unit, a wireless communication unit for establishing a wireless communication connection with an external device, And a control unit for controlling the time of the wireless communication connection release based on the signal strength.

In order to achieve the above object, according to the present invention, there is provided a wireless communication method comprising the steps of: performing a wireless communication connection with an external device; and transmitting, when a response is not received from the external device after the wireless communication is established, And determining a time point of the communication connection release.

Effects of the mobile terminal and the control method according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, it is possible to minimize the inconvenience in use of the mobile terminal when it is necessary to cancel the wireless communication connection between the mobile terminal and the external device irrespective of the intention of the terminal user The wireless communication can be disconnected at a time point when the wireless communication is established.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation and the like. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

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

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

Hereinafter, the components will be described in order.

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

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

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. 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 broadcast signal or a radio broadcast signal.

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

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

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (DVF-H) A digital broadcasting system such as DVB-CB, OMA-BCAST, or Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

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

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

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

The short-range communication module 114 refers to a module for short-range communication. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module. According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites, and then applies trigonometry to the calculated information to obtain a three-dimensional string of latitude, longitude, The location information can be accurately calculated. At present, a method of calculating position and time information using three satellites and correcting an error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 can calculate speed information by continuously calculating the current position in real time.

Referring to FIG. 1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes an image frame such as a still image or moving image obtained by the image sensor in the video communication mode or the photographing mode. 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. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through 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 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control 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, and the like.

The sensing unit 140 senses the current state of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. It is also possible to sense whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. Meanwhile, the sensing unit 140 may include a proximity sensor 141. This will be discussed later in connection with touch screens.

The output unit 150 is for generating an output relating to visual, auditory or tactile sense and includes a display unit 151, an acoustic output module 152, an alarm unit 153, a haptic module 154, 155, and the like.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another or may be disposed integrally with each other, or may be disposed on different surfaces.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

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

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller (not shown). The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like.

The proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is enclosed by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

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

Hereinafter, for convenience of explanation, the act of recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

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

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

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. In this case, the display unit 151 and the sound / voice output module 152 may be a kind of the alarm unit 153. The display unit 151 and the sound / . ≪ / RTI >

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

In addition to the vibration, the haptic module 154 may include a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. At least two haptic modules 154 may be provided according to the configuration of the mobile terminal 100.

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

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

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

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

The memory unit 160 may store a program for processing and controlling the controller 180 and may store data to be input / output (e.g., a telephone directory, a message, audio, a still image ) For the temporary storage. The memory unit 160 may store the frequency of use of each of the data (for example, each telephone number, each message, and frequency of use for each multimedia).

In addition, the memory unit 160 may store data on vibration and sound of various patterns output when the touch is input on the touch screen.

The memory unit 160 may store Received Signal Strength Indication (RSSI) of the wireless communication unit for at least a predetermined period of time. The received signal strength may be stored for each received signal corresponding to each module of the wireless communication unit 110.

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

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

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

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

The controller 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively. The control unit 180 may extract a predetermined desired image portion from a predetermined image through the pattern recognition process.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

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

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control unit 180 itself.

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

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

The disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

The cases may be formed by injection molding a 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 sound output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, the interface 170, and the like may be disposed in the front body 101 have.

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

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100 and may include a plurality of operation units 131 and 132. The operation units 131 and 132 may be collectively referred to as a manipulating portion.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 The touch recognition mode can be activated or deactivated.

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

Referring to FIG. 2B, a camera 121 'may be further mounted on the rear surface of the terminal body, that is, the rear case 102. The camera 121 'may have a photographing direction substantially opposite to that of the camera 121 (see FIG. 2A), and may be a camera having the same or different pixels as the camera 121.

For example, the camera 121 may have a low pixel so that the face of the user can be photographed and transmitted to the other party in case of a video call or the like, and the camera 121 ' It is desirable to have pixels at a high level. The cameras 121 and 121 'may be installed in the terminal body so as to be rotatable or pop-upable.

A flash 123 and a mirror 124 may be additionally disposed adjacent to the camera 121 '. The flash 123 illuminates the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to shoot himself / herself (self-photographing) using the camera 121 '.

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

In addition to the antenna for communication, a broadcast signal receiving antenna 116 may be additionally disposed on the side of the terminal body. The antenna 116, which forms part of the broadcast receiving module 111 (see FIG. 1), can be installed to be able to be drawn out from the terminal body.

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

The rear case 102 may further include a touch pad 135 for sensing a touch. The touch pad 135 may be of a light transmission type for the display unit 151. [ In this case, if the display unit 151 is configured to output the time information on both sides (i.e., in the directions of both the front and back sides of the mobile terminal), the time information can be recognized through the touch pad 135 do. The information output on both sides may be all controlled by the touch pad 135. [

Meanwhile, the display for exclusive use of the touch pad 135 may be separately installed, so that the touch screen may be disposed in the rear case 102 as well.

The touch pad 135 operates in correlation with the display portion 151 of the front case 101. The touch pad 135 may be disposed parallel to the rear of the display unit 151. The touch pad 135 may have a size equal to or smaller than that of the display unit 151.

Hereinafter, embodiments related to a control method that can be implemented in the mobile terminal configured as above will be described with reference to the accompanying drawings. It goes without saying that the embodiments described below can be used alone or in combination with each other.

Referring initially to Figure 3, an example of a wireless environment in which an embodiment of the present invention may be implemented is described.

Figure 3 illustrates an example of a wireless environment in which embodiments of the present invention may be implemented.

As shown in FIG. 3, the mobile terminal 100 may be connected to the external device 500 in a wireless communication manner.

The wireless communication may be any one of the mobile communication, the wireless Internet communication, and the short-range communication. And the Bluetooth communication, the RFID communication, the infrared communication, the UWB communication, and the ZigBee communication when the wireless communication is the short distance communication.

Hereinafter, it is assumed that the wireless communication is the Bluetooth communication. However, it goes without saying that the embodiment of the present invention is not limited thereto.

The external device 500 may be any device capable of performing the Bluetooth communication, such as a Bluetooth headset, another mobile terminal of the other party, a printer, and the like.

Hereinafter, it is assumed that the wireless communication is the Bluetooth headset or another mobile terminal. However, it goes without saying that the embodiment of the present invention is not limited thereto.

The Bluetooth headset 500 includes a wireless communication module 510, a modem module 520, an audio output module (e.g., a speaker) 530 and an audio input module (e.g., a microphone) 540 can do.

The wireless communication module 510 can perform short-range wireless communication with the mobile terminal 100 according to the communication standard.

The modulation and demodulation module 530 demodulates a signal received from the mobile terminal 100 through the wireless communication or modulates a signal to be transmitted to the mobile terminal 100.

The audio output module 530 outputs audio according to the demodulated received signal, and the audio input module 530 receives audio from the user for the transmission signal.

Meanwhile, although not shown, the another mobile terminal may be the same as the mobile terminal described above, but may be different if the Bluetooth communication is possible.

An embodiment of a control method of a mobile terminal according to the present invention will be described with reference to Figs. 4 and 5. Fig.

FIG. 4 is a flowchart of a method of controlling a mobile terminal according to the present invention, and FIG. 5 is a state diagram of a display screen in which an embodiment of a method of controlling a mobile terminal according to the present invention is implemented.

Hereinafter, the display screen of the display unit 151 will be referred to as a reference numeral 400.

5, the mobile terminal 100 is in a telephone conversation with the other party, and the mobile terminal 100 is connected to the Bluetooth headset 500 in Bluetooth communication (S41) . Accordingly, the terminal user can make a telephone conversation with the other party through the Bluetooth headset 500. [

The mobile terminal 100 may store received signal strength indication (RSSI) received from the Bluetooth headset 500 in the memory unit 160. [ For example, the strength of the wireless communication received signal during a recent predetermined time during the Bluetooth communication connection can be stored in real time.

Meanwhile, the mobile terminal 100 may periodically or non-periodically transmit a request signal to determine whether the Bluetooth communication connection with the Bluetooth headset 500 is good. The request signal may be a Poll signal.

Upon receiving the request signal, the Bluetooth headset 500 may transmit a response signal to the mobile terminal 100 to confirm that the Bluetooth communication connection is good. The response signal may be a null signal.

The controller of the mobile terminal 100 determines whether the response signal is received (S42).

When the mobile terminal 100 receives the response signal, it determines that the Bluetooth communication connection is good, and maintains the Bluetooth communication with the Bluetooth headset 500 (S41).

The request signal and the response signal can be continuously transmitted while the other party's voice and / or terminal user's voice is not transmitted between the mobile terminal 100 and the Bluetooth headset 500. [

If the mobile terminal 100 does not receive the response signal, the mobile terminal 100 transmits the RSSI of the wireless communication signal from the Bluetooth headset 500 at a point in time when the response signal is not received, Is compared with the threshold value (V _TH ) (S43). The strength of the wireless communication signal received may be an average value of the strength of the wireless communication signal received during a recent predetermined time immediately before the response signal is not received.

If the strength of the wireless communication reception signal is less than the threshold value V _TH , the mobile terminal 100, as shown in (5-2) of FIG. 5, 1 pop-up window 410 on the display screen 400. FIG. The mobile terminal 100 waits for the response signal for a first time (for example, 8 seconds, 10 seconds, 30 seconds, etc.) from the time when the response signal is not received from the Bluetooth headset 500 [S44]. If the response signal is received within the first time, the mobile terminal 100 maintains the Bluetooth communication connection with the Bluetooth headset 500 [S45, S41].

The reason for waiting for the response signal during the first time is as follows. That is, the strength of the wireless communication signal is less than the threshold value V _TH , which means that the mobile terminal 100 and the Bluetooth headset 500 are not broken down in relation to the Bluetooth communication, ) And the Bluetooth (500) is temporarily longer than the predetermined Bluetooth communication limit distance. Accordingly, if the terminal user places the Bluetooth headset 500 within a first time such that the Bluetooth headset 500 is close to the mobile terminal 100, the mobile terminal 100 and the Bluetooth headset The Bluetooth communication between the base station 500 and the base station 500 can be normally performed.

However, if the response signal is not received within the first time, the mobile terminal 100 releases the Bluetooth communication with the Bluetooth headset 500 (S45, S46). The mobile terminal 100 may display a second pop-up window 420 indicating that the Bluetooth communication connection is canceled, as shown in (5-3) of FIG.

If the strength of the wireless communication signal is greater than or equal to the threshold value V _TH , the mobile terminal 100 transmits a Bluetooth communication connection with the Bluetooth headset 500 from the point in time when the response signal is not received, And released after a lapse of time [S46].

Although not shown, the mobile terminal 100 can continue the Bluetooth communication connection with the Bluetooth headset 500 when the response signal is received within a second time period.

The second time may be shorter than the first time. Even the second time may mean immediately after the point in time when the response signal is not received. In this case, the mobile terminal 100 can immediately release the Bluetooth communication connection without waiting for the reception of the response signal.

The first time and the second time may be set by the terminal user through the user input unit 130. [ The second pop-up window 420 indicating that the mobile terminal 100 is disconnected from the Bluetooth communication is displayed as described above.

The mobile terminal 100 may be a replacement module in the mobile terminal 100 that replaces the Bluetooth headset 500 when the BlueShow communication connection is released, i.e., the microphone module 122 and the sound output module 152 ) Can be activated (S47).

Accordingly, the terminal user can continue the telephone conversation with the other party through the microphone module 122 and the sound output module 152. [

The mobile terminal 100 may attempt to reconnect the Bluetooth communication during use of the replacement module after the Bluetooth communication is disconnected. 6 and 7 will be further described with reference to FIG.

FIG. 6 is a flowchart of an embodiment of a method of controlling a mobile terminal according to the present invention, and FIG. 7 is a state diagram of a display screen in which an embodiment of a method of controlling a mobile terminal according to the present invention is implemented.

The mobile terminal activates the microphone module 122 and the sound output module 152 to allow the terminal user to continue the telephone conversation [S61].

The mobile terminal 100 activates the microphone module 122 and the sound output module 152 to allow the terminal user to continue the telephone conversation and to allow the user of the Bluetooth headset 500 to communicate with the Bluetooth headset 500 Try to reconnect [S62]. The mobile terminal 100 displays a third pop-up window 430 informing the reconnection attempt of the Bluetooth communication with the Bluetooth headset 500, as shown in (7-1) of FIG. 7, ). ≪ / RTI >

Then, when the mobile terminal 100 becomes reconnectable with the Bluetooth headset 500, a fourth pop-up window 440 informing the user of the Bluetooth headset 500 as shown in (7-2) of FIG. 7, Lt; / RTI > Then, the mobile terminal 100 may ask the terminal user through the fourth pop-up window 440 if he wants to reconnect the Bluetooth communication.

Then, the terminal user can select whether to reconnect the Bluetooth communication through the appropriate operation of the user input unit 130 (S63).

If the terminal user does not wish to reconnect the Bluetooth communication, the mobile terminal 100 continues to activate the microphone module 122 and the sound output module 152 so that the terminal user can continue the telephone conversation [S61].

However, when the terminal user desires to reconnect the Bluetooth communication, the mobile terminal 100 continues to activate the microphone module 122 and the sound output module 152, and the Bluetooth communication with the Bluetooth headset 500 So that the terminal user can continue the telephone conversation via the Bluetooth headset 500 [S64].

The above description has been made on the determination of the release point of the Bluetooth communication based on the strength of the received signal of the wireless communication. However, the present embodiment may be configured to determine the release time of the Bluetooth communication according to the type of communication (or urgency) between the mobile terminal 100 and the external device 500. This will be further described with reference to FIG.

8 is a flowchart of an embodiment of a method of controlling a mobile terminal according to the present invention.

The mobile terminal 100 is in Bluetooth communication with the external device 500 (S81). The external device 500 may be the Bluetooth headset or another mobile terminal.

The mobile terminal 100 periodically or non-periodically transmits a request signal to the external device 500 in order to check whether the Bluetooth communication connection with the external device 500 is good.

The controller 180 of the mobile terminal 100 determines whether it receives a response signal to the request signal (S82).

If the mobile terminal 100 receives the response signal, it determines that the Bluetooth communication connection is good, and maintains the Bluetooth communication with the Bluetooth headset 500 (S81).

If the mobile terminal 100 does not receive the response signal, the controller 180 of the mobile terminal 100 determines whether the Bluetooth communication between the mobile terminal 100 and the external device 500 is urgent do.

For example, assume that the external device 500 is a Bluetooth headset for making a phone call at the mobile terminal 100. [ If a temporary failure occurs between the communication between the Bluetooth headset 500 and the mobile terminal 100, it may cause a considerable inconvenience to the phone call of the terminal user. In such a case, the Bluetooth communication is considered urgent. In general, when real-time Bluetooth communication is required between the external device 500 and the mobile terminal 100, the Bluetooth communication is urgent.

Meanwhile, it is assumed that the external device 500 is another mobile terminal for file transfer with the mobile terminal 100. Even if a temporary failure occurs between the communication between the another mobile terminal 500 and the mobile terminal 100, it takes a longer time to transfer files between them, and there is no significant problem in the transmission of the file itself. In such a case, the Bluetooth communication is not urgent. In general, if the real time Bluetooth communication between the external device 500 and the mobile terminal 100 is not required, the Bluetooth communication is not urgent.

If it is determined that the Bluetooth communication is not urgent, the mobile terminal 100 waits for the response signal for a first time from the time when the response signal is not received from the external device 500 (S85). If the response signal is received within the first time, the mobile terminal 100 maintains the Bluetooth communication connection with the external device 500 (S86, S81).

However, if the response signal is not received within the first time, the mobile terminal 100 releases the Bluetooth communication with the external device 500 (S86, S87).

Meanwhile, when it is determined that the Bluetooth communication is urgent, the mobile terminal 100 transmits RSSI of the wireless communication reception signal from the external device 500 at a time when the response signal is not received to a predetermined threshold V _TH ) [S83].

If the strength of the wireless communication reception signal is less than the threshold value V _TH , the mobile terminal 100 waits for the response signal for a first time from the time when the response signal is not received from the external device 500 [S85]. If the response signal is received within the first time, the mobile terminal 100 maintains a Bluetooth communication connection with the external 500 (S86, S81).

However, if the response signal is not received within the first time, the mobile terminal 100 releases the Bluetooth communication with the external device 500 (S86, S81).

If the strength of the wireless communication reception signal is equal to or higher than the threshold V _TH , the mobile terminal 100 transmits a Bluetooth communication connection with the external device 500 after a lapse of a second time from when the response signal is not received [S87].

Although not shown, the mobile terminal 100 can continue the Bluetooth communication connection with the external device when the response signal is received within a second time period.

The second time may be shorter than the first time. Even the second time may mean immediately after the point in time when the response signal is not received. In this case, the mobile terminal 100 can immediately release the Bluetooth communication connection without waiting for the reception of the response signal.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

For example, in the embodiments of the present invention described above, the first time is described as being longer than the second time. However, the first time may not be necessarily longer than the second time, but may be shorter. For example, it may be desirable to quickly disconnect the Bluetooth communication if the strength of the wireless communication received signal of the mobile terminal 100 is weakened due to lack of battery power of the Bluetooth headset 500 to be.

The present invention described above can be implemented as a computer readable code on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer-readable medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) . Also, the computer may include a control unit 180 of the terminal.

Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

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

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

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

Figure 3 illustrates an example of a wireless environment in which embodiments of the present invention may be implemented.

4 is a flowchart of an embodiment of a method of controlling a mobile terminal according to the present invention.

5 is a state diagram of a display screen on which an embodiment of a control method of a mobile terminal according to the present invention is implemented.

6 is a flowchart of an embodiment of a control method of a mobile terminal according to the present invention.

7 is a state diagram of a display screen on which an embodiment of a control method of a mobile terminal according to the present invention is implemented.

8 is a flowchart of an embodiment of a method of controlling a mobile terminal according to the present invention.

Claims (15)

A user input section; A display unit; A wireless communication unit for making a wireless communication connection with an external device; A memory in which a received signal strength of the wireless communication during a recent period is recorded; And And a control unit for controlling the time of the wireless communication connection release based on an average value of a received signal strength of the wireless communication for a predetermined period when there is no specific response from the external apparatus after the wireless communication is established with the external apparatus Mobile terminal. delete The apparatus of claim 1, And determines the time point of the wireless communication connection release based on an average value of the received signal strength of the wireless communication immediately before the specific response is absent during a recent predetermined period. The apparatus of claim 1, And controls the time of the wireless communication connection cancellation to be quicker when the received signal strength of the wireless communication is higher than a specific value when the received signal strength of the wireless communication is less than a specific value. 5. The apparatus of claim 4, Wherein the control unit waits for a specific time from a point in time when the received signal strength of the wireless communication is less than a specific value and stops the wireless communication connection if the response does not continue for the predetermined time. Claim 6 has been abandoned due to the setting registration fee. 6. The apparatus of claim 5, And controls the specific time to be set by the user. Claim 7 has been abandoned due to the setting registration fee. 6. The apparatus of claim 5, And controls to release the wireless communication connection immediately at a point in time when the received signal strength of the wireless communication is not less than a specific value. The apparatus of claim 1, And controls the time of the wireless communication connection cancellation to be further delayed when the received signal strength of the wireless communication is a specific value or more than when the received signal strength of the wireless communication is less than a specific value. The method according to claim 1, Wherein the wireless communication is short- The short-distance communication is Bluetooth communication, Wherein the external device is a Bluetooth headset. delete 10. The method of claim 9, MIC; And An audio output module, Wherein, And controls to activate at least one of the microphone and the sound output module when the wireless communication connection is released. The apparatus of claim 1, And controls to display on the display unit that the wireless communication connection with the external device is canceled. delete The apparatus of claim 1, And controls to determine a time point of the wireless communication connection release based on urgency of the wireless communication. Connecting wireless communication with an external device; Recording a received signal strength of the wireless communication for a recent period; And Determining a time point of the wireless communication connection release based on an average value of a received signal strength of the wireless communication for a predetermined period when there is no specific response from the external device after the wireless communication with the external device is established; / RTI >

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