KR20150140050A - Mobile terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a mobile terminal and a method for controlling the same. The mobile terminal according to an embodiment of the present invention controls to output sound through a sound output path of the mobile terminal between a first speaker and a second speaker for outputting sound in an osteophony (bone conduction) method by converting a sound signal into a vibration signal, according to intensity of external noise. Therefore, the mobile terminal can appropriately use advantage of a common earphone and an osteophony earphone.

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal and a control method thereof that can improve a user's convenience by controlling an acoustic output path according to a noise situation around the user.

A terminal can be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal according to whether the terminal can be moved. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

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.

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, by using the bone conduction type speaker and the general speaker as the sound output path, the sound output path can be controlled according to the surrounding noise situation to enhance the sophistication of the sound output.

Further, according to at least one of the embodiments of the present invention, by applying the vibration characteristic of the wearable device to the sound output, sound can be outputted according to the user's situation.

According to an aspect of the present invention, there is provided a mobile terminal including: a microphone; a first speaker; A second speaker for converting an acoustic signal into a vibration signal and outputting the acoustic signal in a bone conduction manner; And a controller for controlling the sound output path so that the sound signal is output to at least one of the first speaker and the second speaker according to a level of noise detected through the microphone.

Wherein when the level of the noise detected through the microphone exceeds a reference value while the acoustic signal corresponding to the reproduction of the multimedia contents is output through the first speaker, It is possible to switch to the second speaker.

The control unit may switch the output path of the sound signal to the first speaker when the level of the noise is equal to or less than the reference value.

The control unit may control the second speaker to output the second sound signal when an event of outputting the second sound signal of the first sound signal through the first speaker is generated.

The second sound signal may include at least one of an alarm indicating the occurrence of an event received from an external device or an alarm set at the mobile terminal.

The mobile terminal may further include a touch screen, and the control unit may display a control area on the touch screen for controlling a rate at which the sound signal is output through at least one of the first speaker and the second speaker .

The mobile terminal may further include a sensing unit that senses proximity to a user's body part as a wearable device. The sensing unit senses that the user wears the wearable device. When the sound signal is output in a state where the sound signal is not output, the sound signal may be output through the second speaker.

The intensity of the vibration signal output through the second speaker may be greater than the intensity of the vibration signal output by the user wearing the wearable device.

The first speaker and the second speaker may be provided in an acoustic output module that can be connected to the mobile terminal either in a wired or wireless manner and may be controlled by at least one of the first speaker and the second speaker under the control of the controller of the mobile terminal, Can be output.

A control method of a mobile terminal according to another aspect of the present invention relates to a control method of a mobile terminal including a first speaker and a second speaker that converts an acoustic signal into a vibration signal and outputs the vibration signal in a bone conduction manner Sensing a level of noise through a microphone; And controlling an acoustic output path so that an acoustic signal output from the mobile terminal is output to at least one of the first speaker and the second speaker according to the level of the noise.

The present invention provides a mobile terminal and a control method thereof, which can improve the accuracy of sound output by controlling an acoustic output path in accordance with surrounding noises by using a bone conduction type speaker and a general speaker as an acoustic output path.

Meanwhile, the present invention provides a mobile terminal and a control method thereof, which can output sound according to the user's situation by applying the vibration characteristics of the wearable device to the sound output.

1A is a block diagram illustrating a mobile terminal according to the present invention.
1B and 1C are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions.
FIG. 2 is an exploded view of the mobile terminal of FIG. 1b.
3 is a diagram for explaining an example in which the earphone set is applied to the sound output means of the mobile terminal.
4 is a diagram for explaining an example in which a wearable device of a glass type is used as a mobile terminal.
5 is a flowchart illustrating a method of controlling a mobile terminal according to an exemplary embodiment of the present invention.
6 is a flowchart of a method of controlling a mobile terminal according to another embodiment of the present invention.
FIG. 7 is a view for explaining the embodiment shown in FIG.
8 is a view for explaining an example for controlling the output specific gravity of the bone conduction speaker and the general speaker.
9 is a diagram for explaining an application example in which a control method of a mobile terminal according to an embodiment of the present invention is applied to a wearable device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. 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. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

1A to 1C are block diagrams for explaining a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual diagrams showing an example of a mobile terminal according to the present invention in different directions.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, ), And the like. The components shown in FIG. 1A are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be connected between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and another mobile terminal 100 or between the mobile terminal 100 and the external server 100. [ Lt; RTI ID = 0.0 > wireless < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100. Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and may be operated by the control unit 180 to perform the operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1A in order to drive an application program stored in the memory 170. FIG. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with one another to implement a method of operation, control, or control of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170. [

Hereinafter, the various components of the mobile terminal 100 will be described in detail with reference to FIG. 1A.

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 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. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

The mobile communication module 112 may be a mobile communication module or a mobile communication module such as a mobile communication module or a mobile communication module that uses technology standards or a communication method (e.g., Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution And an external terminal, or a server on a mobile communication network established according to a long term evolution (AR), a long term evolution (AR), or the like.

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. The wireless Internet module 113 is configured to transmit and receive a wireless signal in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, wireless LAN (WLAN), wireless fidelity (Wi-Fi), wireless fidelity (Wi-Fi) Direct, DLNA (Digital Living Network Alliance), WiBro Interoperability for Microwave Access, High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) 113 transmit and receive data according to at least one wireless Internet technology, including Internet technologies not listed above.

The wireless Internet module 113 for performing a wireless Internet connection through the mobile communication network can be used for wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE or LTE- May be understood as a kind of the mobile communication module 112.

The short-range communication module 114 is for short-range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB) (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The short-range communication module 114 is connected to the mobile terminal 100 and the wireless communication system through the wireless area networks, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 ) And the other mobile terminal 100 (or the external server). The short-range wireless communication network may be a short-range wireless personal area network.

Here, the other mobile terminal 100 may be a wearable device (e.g., a smartwatch, a smart glass, etc.) capable of interchanging data with the mobile terminal 100 according to the present invention (smart glass), HMD (head mounted display)). The short range communication module 114 may detect (or recognize) a wearable device capable of communicating with the mobile terminal 100 around the mobile terminal 100. [ If the detected wearable device is a device authenticated to communicate with the mobile terminal 100 according to the present invention, the control unit 180 may transmit at least a part of the data processed by the mobile terminal 100 to the short- 114 to the wearable device. Therefore, the user of the wearable device can use the data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a telephone is received in the mobile terminal 100, the user performs a telephone conversation via the wearable device, or when a message is received in the mobile terminal 100, It is possible to check the message.

The position information module 115 is a module for obtaining the position (or current position) of the mobile terminal, and a representative example thereof is a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, when the mobile terminal utilizes the GPS module, it can acquire the position of the mobile terminal by using a signal transmitted from the GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, it can acquire the position of the mobile terminal based on information of a wireless access point (AP) that transmits or receives the wireless signal with the Wi-Fi module. Optionally, the location information module 115 may perform any of the other functions of the wireless communication unit 110 to obtain data relating to the location of the mobile terminal, in addition or alternatively. The location information module 115 is a module used to obtain the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or obtains the location of the mobile terminal.

Next, the input unit 120 is for inputting image information (or signal), audio information (or signal), data, or information input from a user. For inputting image information, Or a plurality of cameras 121 may be provided.

The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. [ A plurality of cameras 121 provided in the mobile terminal 100 may be arranged to have a matrix structure and various angles or foci may be provided to the mobile terminal 100 through the camera 121 having the matrix structure A plurality of pieces of image information can be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to acquire a left image and a right image for realizing a stereoscopic image.

The microphone 122 processes the external acoustic signal into electrical voice data. The processed voice data can be utilized variously according to a function (or a running application program) being executed in the mobile terminal 100. Meanwhile, the microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 123 is for receiving information from a user and when the information is inputted through the user input unit 123, the control unit 180 can control the operation of the mobile terminal 100 to correspond to the input information . The user input unit 123 may include a mechanical input means (or a mechanical key such as a button located on the front, rear or side of the mobile terminal 100, a dome switch, a jog wheel, Jog switches, etc.) and touch-type input means. For example, the touch-type input means may comprise a virtual key, a soft key or a visual key displayed on the touch screen through software processing, The virtual key or the visual key can be displayed on the touch screen with various forms. For example, the virtual key or the visual key can be displayed on the touch screen, ), An icon, a video, or a combination thereof.

Meanwhile, the sensing unit 140 senses at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information, and generates a corresponding sensing signal. The control unit 180 may control the driving or operation of the mobile terminal 100 or may perform data processing, function or operation related to the application program installed in the mobile terminal 100 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 140 will be described in more detail.

First, the proximity sensor 141 refers to a sensor that detects the presence of an object approaching a predetermined detection surface, or the presence of an object in the vicinity of the detection surface, without mechanical contact by using electromagnetic force or infrared rays. The proximity sensor 141 may be disposed in the inner area of the mobile terminal or in proximity to the touch screen, which is covered by the touch screen.

Examples of the proximity sensor 141 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. In the case where the touch screen is electrostatic, the proximity sensor 141 can be configured to detect the proximity of the object with a change of the electric field along the proximity of the object having conductivity. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, the act of recognizing that the object is located on the touch screen in proximity with no object touching the touch screen is referred to as "proximity touch & The act of actually touching an object on the screen is called a "contact touch. &Quot; The position at which the object is closely touched on the touch screen means a position where the object corresponds to the touch screen vertically when the object is touched. The proximity sensor 141 can detect 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, have. Meanwhile, the control unit 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141 as described above, and further provides visual information corresponding to the processed data It can be output on the touch screen. Furthermore, the control unit 180 can control the mobile terminal 100 such that different operations or data (or information) are processed according to whether the touch to the same point on the touch screen is a proximity touch or a touch touch .

The touch sensor uses a touch (or touch input) applied to the touch screen (or the display unit 151) by using at least one of various touch methods such as a resistance film type, a capacitive type, an infrared type, an ultrasonic type, Detection.

For example, the touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen or a capacitance generated in a specific portion to an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, a capacitance at the time of touch, and the like where a touch object touching the touch screen is touched on the touch sensor. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor.

Thus, when there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and 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. Here, the touch controller may be a separate component from the control unit 180, and may be the control unit 180 itself.

On the other hand, the control unit 180 may perform different controls or perform the same control according to the type of the touch object touching the touch screen (or a touch key provided on the touch screen). Whether to perform different controls or to perform the same control according to the type of the touch object may be determined according to the current state of the mobile terminal 100 or an application program being executed.

On the other hand, the touch sensors and the proximity sensors discussed above can be used independently or in combination to provide a short touch (touch), a long touch, a multi touch, a drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, and the like. Touch can be sensed.

The ultrasonic sensor can recognize the position information of the object to be sensed by using ultrasonic waves. Meanwhile, the controller 180 can calculate the position of the wave generating source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the fact that the light is much faster than the ultrasonic wave, that is, the time when the light reaches the optical sensor is much faster than the time the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generating source can be calculated using the time difference with the time when the ultrasonic wave reaches the reference signal.

The camera 121 includes at least one of a camera sensor (for example, a CCD, a CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to sense a touch of the sensing object with respect to the three-dimensional stereoscopic image. The photosensor can be laminated to the display element, which is adapted to scan the movement of the object to be detected proximate to the touch screen. More specifically, the photosensor mounts photo diodes and TRs (Transistors) in a row / column and scans the contents loaded on the photosensor using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the object to be sensed according to the amount of change of light, and position information of the object to be sensed can be obtained through the calculation.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

In addition, the display unit 151 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

In the stereoscopic display unit, a three-dimensional display system such as a stereoscopic system (glasses system), an autostereoscopic system (no-glasses system), and a projection system (holographic system) can be applied.

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 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 unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 153 may be vibration. The intensity and pattern of the vibration generated in the haptic module 153 can be controlled by the user's selection or the setting of the control unit. For example, the haptic module 153 may synthesize and output different vibrations or sequentially output the vibrations.

In addition to vibration, the haptic module 153 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, a touch on the skin surface, 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 153 can transmit the tactile effect through the direct contact, and the tactile effect can be felt by the user through the muscles of the finger or arm. The haptic module 153 may include two or more haptic modules 153 according to the configuration of the mobile terminal 100.

The light output unit 154 outputs a signal for notifying the occurrence of an event using the light of the light source of the mobile terminal 100. Examples of events that occur in the mobile terminal 100 may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output from the light output unit 154 is implemented as the mobile terminal emits light of a single color or a plurality of colors to the front or rear surface. The signal output may be terminated by the mobile terminal detecting the event confirmation of the user.

The interface unit 160 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data in the mobile terminal 100 to an external device. For example, a port for connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an audio I / O port, a video I / O port, an earphone port, and the like may be included in the interface unit 160.

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 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 interface unit 160. [

The interface unit 160 may be a path through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, And various command signals may be transmitted to the mobile terminal 100. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The memory 170 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 170 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 170 may be a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), a multimedia card micro type ), Card type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read memory, a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs the storage function of the memory 170 on the Internet.

Meanwhile, as described above, the control unit 180 controls the operations related to the application program and the general operation of the mobile terminal 100. [ For example, when the state of the mobile terminal meets a set condition, the control unit 180 can execute or release a lock state for restricting input of a user's control command to applications.

In addition, the control unit 180 performs control and processing related to voice communication, data communication, video call, or the like, or performs pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively . Further, the controller 180 may control any one or a plurality of the above-described components in order to implement various embodiments described below on the mobile terminal 100 according to the present invention.

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 power supply unit 190 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

In addition, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of an interface 160 through which an external charger for supplying power for charging the battery is electrically connected.

As another example, the power supply unit 190 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 may use at least one of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission apparatus and a magnetic resonance coupling method based on an electromagnetic resonance phenomenon Power can be delivered.

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

Referring to FIGS. 1B and 1C, 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 folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . A description of a particular type of mobile terminal, although relevant to a particular type of mobile terminal, is generally applicable to other types of mobile terminals.

Here, the terminal body can be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

The mobile terminal 100 includes a case (for example, a frame, a housing, a cover, and the like) that forms an appearance. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on a front surface of the terminal body to output information. The window 151a of the display unit 151 may be mounted on the front case 101 to form a front surface of the terminal body together with the front case 101. [

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, a rear cover 103 for covering the mounted electronic components can be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the engagement. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

These cases 101, 102, and 103 may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The mobile terminal 100 may be configured such that one case provides the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components. In this case, a unibody mobile terminal 100 in which synthetic resin or metal is connected from the side to the rear side can be realized.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) for preventing water from penetrating into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

The mobile terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

1B and 1C, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, an optical output unit (not shown) A second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, And a mobile terminal 100 having a second sound output unit 152b and a second camera 121b disposed on a rear surface thereof.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

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, a 3D display, and an e-ink display.

In addition, the display unit 151 may exist in two or more depending on the embodiment of the mobile terminal 100. In this case, the mobile terminal 100 may be provided with a plurality of display portions spaced apart from each other or disposed integrally with one another, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like.

The touch sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as a user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along an assembly gap (for example, a gap between the window 151a and the front case 101) between the structures. In this case, the appearance of the mobile terminal 100 can be made more simple because the hole formed independently for the apparent acoustic output is hidden or hidden.

The optical output unit 154 is configured to output light for notifying the occurrence of an event. Examples of the event include a message reception, a call signal reception, a missed call, an alarm, a schedule notification, an email reception, and reception of information through an application. The control unit 180 may control the light output unit 154 to terminate the light output when the event confirmation of the user is detected.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in the photographing mode or the video communication mode. The processed image frame can be displayed on the display unit 151 and can be stored in the memory 170. [

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of a user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100 have. The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

The rear input unit may be disposed so as to overlap with the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit may be disposed at the rear upper end of the terminal body such that when the user holds the terminal body with one hand, the rear input unit can be easily operated using the index finger. However, the present invention is not limited thereto, and the position of the rear input unit may be changed.

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 may be configured as a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing the fingerprint of the user, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive the user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations to receive stereophonic sound.

The interface unit 160 is a path through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 may include a connection terminal for connection with another device (for example, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port A wireless LAN port, or the like), or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

And a second camera 121b may be disposed on a rear surface of the terminal body. In this case, the second camera 121b has a photographing direction which is substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. Such a camera can be named an 'array camera'. When the second camera 121b is configured as an array camera, images can be taken in various ways using a plurality of lenses, and a better quality image can be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1A) may be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1A) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to be wirelessly chargeable through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

The rear cover 103 is configured to be coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

The mobile terminal 100 may be provided with an accessory that protects the appearance or supports or expands the function of the mobile terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the mobile terminal 100. [ The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the mobile terminal 100. Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

Meanwhile, the mobile terminal can be extended to a wearable device that can be worn on the body beyond the dimension that the user mainly grasps and uses. These wearable devices include smart watch, smart glass, and head mounted display (HMD). Hereinafter, examples of a mobile terminal extended to a wearable device will be described.

The wearable device can be made to be able to exchange (or interlock) data with another mobile terminal 100. The short range communication module 114 can detect (or recognize) a wearable device capable of communicating with the mobile terminal 100. If the detected wearable device is a device authenticated to communicate with the mobile terminal 100, the control unit 180 may transmit at least a part of the data processed by the mobile terminal 100 to the wearable device 100 via the short- Lt; / RTI > Accordingly, the user can use the data processed by the mobile terminal 100 through the wearable device. For example, when a telephone is received in the mobile terminal 100, it is possible to perform a telephone conversation via the wearable device or to confirm the received message via the wearable device when a message is received in the mobile terminal 100 .

FIG. 2 is an exploded view of the mobile terminal of FIG. 1b.

Referring to FIG. 2, a window 251b is coupled to one surface of the front case (101 of FIG. 1B). A touch center (not shown) may be mounted on the window 251b. The touch sensor is formed to sense a touch input and is made of light transmissive. The touch sensor is mounted on the front surface of the window 251b and may be configured to convert a change in voltage or the like occurring in a specific portion of the window 251b into an electrical input signal.

The window 251b is mounted on the bezel 203 of the front case (101 in Fig. 1B). Unlike the present embodiment, the bezel 203 may be provided separately from the front case (101 of FIG. 1B).

The display 251a may be disposed on the rear surface of the window 251b and the circuit board 217 may be mounted on the rear case 202. [ The circuit board 217 may be configured as an example of a controller (180 in FIG. 1) for operating various functions of the mobile terminal. On the other hand, the camera 221 'is connected to the circuit board 217 so as to take an external image at the back of the terminal. In the drawings, a camera (see 121a in FIG. 1B) for capturing an image at the front of the terminal is not shown, but a configuration without such a camera is also possible.

A frame 204 is formed to support the display portion 251 between the front and rear surfaces of the terminal body. The frame 204 is configured as a front case (101 in Fig. 1). For example, the frame 204 includes a portion exposed to the exterior of the terminal and a portion extended inward from the exposed portion to mount the electronic component. More specifically, the exposed portion forms a bezel, and the display portion 251a is disposed in the mounted portion. For example, the mounting portion may include a receiving portion 205 for receiving the display 251a.

Meanwhile, according to an embodiment of the present invention, the sound output unit 261 is connected to the circuit board 217 to transmit the sound of the front face of the terminal. The sound output unit 261 is formed to transmit sound using bone conduction vibration. The sound output unit 261 may include, for example, a bone conduction speaker, a bone conduction receiver, and the like.

Bone conduction involves the use of a bone conduction transducer that converts an electrical signal into a vibrating signal, and the sound is conducted to the skull without passing through the eardrum and is delivered directly to the inner ear. This concept corresponds to the air conduction that sounds in the air reach the inner ear through the ear canal, tympanic membrane, and calvarial bone. A bone conduction transducer is attached to the bone conduction speaker or the bone conduction receiver. The bone conduction transducer can perform a vibration speaker function that converts an electrical signal into a vibration signal to transmit a sound.

According to an exemplary embodiment of the present invention, the sound output unit of the mobile terminal 100 may include a general speaker and a bone conduction type speaker. The general speaker has been described in the sound output unit 152 of FIG. A structure for outputting sound through the bone conduction type speaker will be described in more detail with reference to FIG.

2, the sound output unit 261 is connected to the frame 204 to transmit the vibration to the display unit 251a. The sound output unit 261 is disposed on the opposite side (the rear surface of the frame) of the receiving unit 205 so as to overlap the display unit 251a received in the receiving unit 205 and the thickness direction of the terminal body. A seating surface 206 having a step with respect to the bottom of the receiving portion 205 may be formed on the frame 204 so that the window 251b covers the display portion 251a while being seated. Owing to this structure, the vibration of the sound output section 261 is transmitted to the window 251b via the frame 204 or via the frame 204 and the display section 251a, As the user touches the window 251b, the user can recognize the sound.

The mobile terminal 100 according to one embodiment of the present invention has the sound output unit 152, the first sound output unit 152a, and the second sound output unit 152b described with reference to Figs. 1A to 1C. (For example, 261 in FIG. 2) different from the sound output method of the sound output unit.

3 is a diagram for explaining an example in which the earphone set is applied to the sound output means of the mobile terminal.

Referring to FIG. 3, the mobile terminal 100 may output sound through an earphone, and the earphone may include an earphone set including a first speaker 310 and a second speaker 320. The first speaker 310 is a commonly used earphone speaker, and the second speaker 320 converts an electrical signal corresponding to the acoustic signal into a vibration signal, As shown in FIG. According to an embodiment of the present invention, the control unit 180 may output a predetermined sound signal through the first speaker 310 or the second speaker 320.

3, the first speaker 310 and the second speaker 320 may be separated from the mobile terminal 100. When the earphone set 300 is inserted into the earphone of the mobile terminal 100, It can be used as the sound output means of the mobile terminal 100. [

4 is a diagram for explaining an example in which a wearable device of a glass type is used as a mobile terminal.

4, the mobile terminal 100 may be a glass-type wearable device 400, and the wearable device 400 may include a first speaker 450 and a second speaker 452 . As described above, the first speaker 450 can be detachably attached to the wearable device 400 or integrated into the wearable device 400, and can output sounds using a general speaker method. have. The second speaker 452 is a bone conduction type speaker as described above. In a state in which the wearable device is worn by a user, vibration caused by bone conduction through the speaker module 452, which is in contact with the user's skull, So that sound can be transmitted.

More specifically, the glass-type mobile terminal 400 is configured to be worn on the head of a human body, and a frame (a case, a housing, etc.) for the glass- . The frame portion may be formed of a flexible material to facilitate wearing. This figure illustrates that the frame portion includes a first frame 401 and a second frame 402 of different materials. In general, the mobile terminal 400 may include features of the mobile terminal 100 of Figures 1A-1C or similar features.

The frame portion is supported on the head portion, and a space for mounting various components is provided. As shown in the figure, electronic parts such as the control module 480, the sound output module 452, and the like may be mounted on the frame part. Further, a lens 403 covering at least one of the left eye and the right eye may be detachably mounted on the frame portion.

The control module 480 controls various electronic components included in the mobile terminal 400. The control module 480 can be understood as a configuration corresponding to the control unit 180 described above. This figure illustrates that the control module 480 is provided in the frame portion on one side of the head. However, the position of the control module 480 is not limited thereto.

The display unit 451 may be implemented as a head mounted display (HMD). The HMD type refers to a display method that is mounted on a head and displays an image directly in front of the user's eyes. When the user wears the glass-type mobile terminal 400, the display unit 451 may be arranged to correspond to at least one of the left and right eyes so that the user can directly provide an image in front of the user's eyes. In this figure, the display unit 451 is located at a portion corresponding to the right eye so that an image can be output toward the user's right eye.

The display unit 451 can project an image to the user's eyes using a prism. Further, the prism may be formed to be transmissive so that the user can view the projected image and the general view of the front (the range that the user views through the eyes) together.

As described above, the image output through the display unit 451 may be overlapped with the general view. The mobile terminal 400 can provide an Augmented Reality (AR) in which a virtual image is superimposed on a real image or a background and displayed as a single image using the characteristics of the display.

The camera 421 is disposed adjacent to at least one of the left eye and the right eye, and is configured to photograph a forward image. Since the camera 421 is positioned adjacent to the eyes, the camera 421 can acquire a scene viewed by the user as an image.

Although the camera 421 is provided in the control module 480 in this figure, it is not limited thereto. The camera 421 may be installed in the frame portion, or may be provided in a plurality of ways to obtain a stereoscopic image.

The glass-type mobile terminal 400 may include user input units 423a and 423b operated to receive control commands. The user input units 423a and 423b can be employed in any manner as long as the user operates in a tactile manner such as a touch or a push. This figure illustrates that the frame unit and the control module 480 are provided with user input units 423a and 423b of a push and touch input method, respectively.

In addition, the glass-type mobile terminal 400 may be provided with a microphone (not shown) for receiving sound and processing the sound as electrical voice data and an acoustic output module 452 for outputting sound. The sound output module 452 may be configured to transmit sound in a general sound output mode or a bone conduction mode. When the sound output module 452 is implemented in a bone conduction manner, when the user wears the mobile terminal 400, the sound output module 452 is brought into close contact with the head and vibrates the skull to transmit sound.

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

The control method of the mobile terminal according to an embodiment of the present invention can be implemented in the mobile terminals 100 and 400 described with reference to FIG. 1A to FIG. Hereinafter, a method of controlling a mobile terminal according to an exemplary embodiment of the present invention and an operation of the mobile terminal 100 for implementing the method will be described in detail with reference to the accompanying drawings.

Referring to FIG. 5, the controller 180 performs an audio output function (S100).

The sound output function may be a function of reproducing an audio file built in the mobile terminal 100 or reproducing multimedia contents reproduced in a streaming format from an external server. Meanwhile, the sound output function may be an alarm for notifying the occurrence of a predetermined event regardless of the playback of the multimedia contents.

The control unit 180 may control the first speaker to output the sound signal corresponding to the execution of the sound output function. The first speaker may correspond to the sound output units 152, 152a, and 152b described in FIGS. 1A to 1C.

Meanwhile, the controller 180 may measure the level of ambient noise (S110). The control unit 180 controls the second speaker to output the sound signal output through the first speaker according to whether the noise level detected through the microphone exceeds a predetermined reference value, Or may be controlled to be continuously output to the first speaker.

If the noise level is lower than a predetermined reference value, the control unit 180 may control the sound signal to be output through the first speaker (S130).

Meanwhile, if the noise level exceeds the predetermined reference value, the controller 180 may control the sound signal to be output through the second speaker (bone conduction speaker) (S120).

In the above-described example, it is assumed that a predetermined sound is output through the first speaker. However, the present invention is not limited to this. The mobile terminal 100 may first check the level of the surrounding noise level and output the sound signal to be output to either the first speaker or the second speaker before the sound is outputted through the first speaker have.

In the case of a bone conduction earphone, sound is transmitted by a predetermined vibration in contact with a head portion of a user, so that sound can be transmitted regardless of the surrounding noise. Accordingly, when the surrounding noise level is high, sound can be transmitted in a bone conduction manner, so that accurate sound can be transmitted regardless of the ambient noise.

In the above-described embodiment, one acoustic signal is output through either the first speaker or the second speaker, but the present invention is not limited thereto. For example, a case in which a plurality of acoustic signals are output through at least one of the first speaker and the second speaker will be described with reference to FIGS. 6 to 7. FIG.

6 is a flowchart of a method of controlling a mobile terminal according to another embodiment of the present invention. FIG. 7 is a view for explaining the embodiment shown in FIG.

The control unit 180 may output the first sound signal to the first speaker (S200).

As described above, the first sound signal may be a function of reproducing an audio file built in the mobile terminal 100 or reproducing multimedia contents reproduced in a streaming format from an external server.

When an event for outputting the second sound signal occurs (S210: YES), the controller 180 selects the output path of the first sound signal and the second sound signal.

Here, the second sound signal may be an alarm indicating that a predetermined event has occurred regardless of the playback of the multimedia content.

In this case, the control unit 180 maintains the output of the first sound signal being output through the first speaker through the first speaker (S220), and outputs the second sound signal to be newly output according to the occurrence of the event to the second speaker (Bone conduction speaker), so that the sound output path can be controlled (S230).

That is, in the case of outputting a sound signal according to a predetermined alarm occurrence during reproduction of the multimedia contents, the alarm is continuously outputted to the bone conduction speaker while maintaining the sound output according to the reproduction of the multimedia contents .

Accordingly, by separating the first output signal of the first output signal from the output signal of the second output signal, the output signal of the first output signal can be reduced or the output signal of the second output signal Acoustic signals can be distinguished and provided to the user.

For example, referring to FIG. 7, when the control unit 180 receives a predetermined message while outputting the first sound signal S1 according to the playback of the MP3 file through the first speaker 310 of the earphone , And an alarm (second sound signal, S2) indicating the reception of the message can be transmitted to the user through the second speaker (bone conduction speaker) of the earphone.

Meanwhile, while displaying the control area 10 for controlling the playback of the MP 3 file on the touch screen 151, the mobile terminal 100 also displays a pop-up window 20 informing reception of the message, Can be displayed.

8 is a view for explaining an example for controlling the output specific gravity of the bone conduction speaker and the general speaker.

The mobile terminal 100 according to an exemplary embodiment of the present invention may display a control area on the touch screen 151 for controlling the sound output through the first speaker and the sound output through the second speaker. That is, since a plurality of sound output paths are provided, a ratio of output through at least one of the first speaker and the second speaker can be controlled through the control region.

For example, referring to FIG. 8, the control area includes a general speaker and a graphic object corresponding to the bone conduction speaker, and a general speaker 310 or a bone conduction speaker 320 To output a sound signal.

For example, when receiving an input for increasing the specific gravity of sound output through the bone conduction speaker with respect to the graphic object, the control unit 180 may control one of the sound signals to increase the specific gravity output through the bone conduction speaker (Fig. 8 (a)).

On the other hand, when receiving an input for increasing the specific gravity of the sound output from the general speaker to the graphic object, the control unit 180 can control the specific gravity output from the general speaker to be increased by one sound signal 8 (b)).

9 is a diagram for explaining an application example in which a control method of a mobile terminal according to an embodiment of the present invention is applied to a wearable device.

A mobile terminal according to an exemplary embodiment of the present invention may be a wearable device. For example, the mobile terminal may be a glass-type wearable device (hereinafter, referred to as a mobile terminal 400).

The mobile terminal 400 may include a sensing unit 441 for sensing proximity to a user's body.

As a result of the sensing of the sensing unit 440, a function for sound output can be performed in a state where the user does not wear the mobile terminal 400. For example, when the user places the glass-type mobile terminal 400 on a predetermined floor, a predetermined sound output function may be performed or an event may be generated. The sound output function may include a function of outputting a bell sound upon receipt of a call or an alarm generating function upon reception of a message. In this case, since the user does not wear the glass-type mobile terminal 400, the control unit 180 determines that the vibration transmitted through the bone conduction speaker 452 is finally transmitted to the floor, Can be done.

The present invention described above can be embodied as computer-readable codes 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 a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, , And may also be implemented in the form of a carrier wave (e.g., 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.

100: mobile terminal 300: earphone set
310: first speaker (general speaker) 320: second speaker (bone conduction speaker)
400: Glass-type mobile terminal

Claims (10)

MIC;
A first speaker;
A second speaker for converting an acoustic signal into a vibration signal and outputting the acoustic signal in a bone conduction manner; And
A control unit for controlling the sound output path so that the sound signal is output to at least one of the first speaker and the second speaker according to a level of noise detected through the microphone;
.
The method according to claim 1,
Wherein,
When the level of the noise detected through the microphone exceeds the reference value while the acoustic signal corresponding to the reproduction of the multimedia contents is outputted through the first speaker, Wherein the mobile terminal performs switching.
3. The method of claim 2,
Wherein,
And switches the output path of the sound signal to the first speaker when the level of the noise is equal to or less than the reference value.
The method according to claim 1,
Wherein,
Wherein the controller controls to output the second sound signal through the second speaker when an event of outputting a second sound signal among the first sound signal output through the first speaker is generated.
5. The method of claim 4,
Wherein the second sound signal includes at least one of an alarm indicating an occurrence of an event received from an external device or an alarm set in the mobile terminal.
The method according to claim 1,
Further comprising a touch screen,
Wherein,
Wherein the controller displays a control area on the touch screen for controlling a rate at which the acoustic signal is output through at least one of the first speaker and the second speaker.
The method according to claim 1,
The mobile terminal includes:
A wearable device, comprising: a sensing unit for sensing proximity to a part of a user's body;
Wherein,
Wherein the controller controls to output the sound signal through the second speaker when the sound signal is output when the user does not wear the wearable device as a result of sensing the sensing unit.
8. The method of claim 7,
Wherein the intensity of the vibration signal output through the second speaker is greater than the intensity of the vibration signal output from the wearable device when the user wears the wearable device.
The method according to claim 1,
Wherein the first speaker and the second speaker are provided in an audio output module connectable to the mobile terminal by wire or wireless.
A method for controlling a mobile terminal having a first speaker and a second speaker for converting a sound signal into a vibration signal and outputting the sound signal in a bone conduction manner,
Sensing a level of noise through a microphone; And
Controlling an acoustic output path so that an acoustic signal output from the mobile terminal is output to at least one of the first speaker and the second speaker according to the level of the noise;
And transmitting the control information to the mobile terminal.

Images