KR20110016272A - Mobile terminal and operation control method thereof - Google Patents

Abstract

PURPOSE: A mobile terminal and an operation control method thereof are provided to change the sound output direction depending on the position of a user. CONSTITUTION: A camera(121) receives an image of a user, and a control unit(180) calculates the location of a user from the image of the user. A sound output module(153) changes the sound output direction according to the location of the user calculated by the control unit, and includes a speaker and a speaker driving unit. The speaker driving unit adjusts the direction of a speaker according to the location of the user calculated by the control unit.

Description

MOBILE TERMINAL AND OPERATION CONTROL METHOD THEREOF

The present invention relates to a mobile terminal and a control method thereof, and more particularly, to a mobile terminal and a control method for changing the sound output direction according to the position of the user.

A mobile terminal is a portable device that is portable and has one or more functions of making voice and video calls, inputting and outputting information, and storing data. As the functions of the mobile terminals are diversified, the mobile terminals are equipped with complex functions such as taking a picture or a video, playing a music file or a video file, a game, a broadcast reception, a wireless Internet, and the like. It is implemented in the form.

With the mobile terminal implemented in the form of such a multimedia device, the sound output from the mobile terminal during video call, music, or video viewing is reduced according to the user's location, so that the optimized sound cannot be provided. In addition, in the case of stereo speakers or surround stereo sound system, the direction of sound output according to the position of the user is important.

The problem to be solved by the present invention is to provide a mobile terminal and a control method for changing the sound output direction according to the position of the user.

Another object of the present invention is to provide a mobile terminal and a control method thereof capable of tracking the location of a user.

Another object of the present invention is to provide a mobile terminal and a control method thereof capable of changing the direction of sound.

A mobile terminal according to an embodiment of the present invention for achieving the above object is, a camera for receiving a user's image, a control unit for calculating the position of the user from the user's image input to the camera, the control unit calculates It includes a sound output module for changing the sound output direction according to the position of a user.

In addition, the control method of the mobile terminal according to an embodiment of the present invention, the step of receiving an image of the user, calculating the position of the user from the image of the input user, and the calculated position of the user Changing the sound output direction accordingly.

According to the mobile terminal and the control method of the present invention has one or more of the following effects.

First, there is an advantage that can change the sound output direction according to the user's location by tracking the user's location.

Second, there is an advantage of minimizing the attenuation of sound pressure by changing the direction of sound output in accordance with the location of the user.

Third, there is an advantage of implementing an improved call environment and sound quality by changing the sound output direction according to the user's location.

Fourth, there is an advantage that can efficiently track the location of the user by using a camera that receives the user's image.

Fifth, there is also an advantage that the speaker can be rotated to the mobile terminal to change the sound output direction effectively.

Hereinafter, a mobile terminal according to the present invention will be described in more detail with reference to the accompanying drawings. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other.

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

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

Referring to FIG. 1, the mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, and an output unit 150. , A memory 160, an interface unit 170, a controller 180, and a power supply unit 190. Such components may be configured by combining two or more components into one component, or by dividing one or more components into two or more components as necessary when implemented in an actual application.

The wireless communication unit 110 may include one or more modules that enable wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and a 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 113, a wireless internet module 115, a short range communication module 117, and a GPS module 119. .

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

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also 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 also be provided through a mobile communication network, and in this case, may be received by the mobile communication module 113. Broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

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

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

The wireless internet module 115 refers to a module for wireless internet access. The wireless internet module 115 may be embedded or external to the mobile terminal 100. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short-range communication module 117 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 the short distance communication technology.

The GPS (Global Position System) module 119 is a module for obtaining a location of a mobile terminal and receives location information from a plurality of GPS satellites.

The 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 123. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151.

The camera 121 receives an image of the user and transmits the image to the controller 180 so that the controller 180 can calculate the location of the user by tracking the user's movement. The camera 121 preferably receives the user's image continuously so that the user can track the movement.

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

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

The user input unit 130 generates key input data input by the user for controlling the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, a finger mouse, and the like. In particular, when the touch pad has a mutual layer structure with the display unit 151 described later, this may be referred to as a touch screen.

The sensing unit 140 detects a current state of the mobile terminal 100 such as an open / closed state of the mobile terminal 100, a location of the mobile terminal 100, presence or absence of user contact, and the like to control the operation of the mobile terminal 100. Generate a sensing signal. For example, when the mobile terminal 100 is a slide type, whether the mobile terminal is opened or closed may be sensed. In addition, it may be responsible for sensing functions related to whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to an external device, and the like.

The sensing unit 140 may include a proximity sensor 141. The proximity sensor 141 detects the presence or absence of an object approaching or an object present in the vicinity without mechanical contact. The proximity sensor 141 may detect a proximity object by using a change in an alternating magnetic field or a change in an electromagnetic field, or by using a change rate of capacitance. Examples of the proximity sensor 141 include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. Two or more proximity sensors 141 may be provided according to the configuration aspect.

The sensing unit 140 may include a gyro sensor 142. The gyro sensor 142 is a concept including a sensor for detecting the movement of an object using a gyroscope, an inertial sensor, and an acceleration sensor. Gyroscopes include mechanical gyroscopes, ring laser gyroscopes, and fiber optic gyroscopes. The gyro sensor 142 detects the movement of the mobile terminal and provides a signal for controlling the mobile terminal.

The sensing unit 140 may include a gravity sensor 143. The gravity sensor 143 is a concept including all kinds of sensors for detecting the rotation state of the mobile terminal. The gravity sensor 143 connects the weight to the variable resistor and detects the current state of rotation of the terminal by the change of resistance according to the rotation, or places the conductive object in the center, and corresponds to the direction in which the conductive object is in contact with the rotation. The rotation state can be detected.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 includes a display unit 151, an audio output module 153, an alarm unit 155, a vibration module 157, and the like. This may be included.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal 100 is in a call mode, the mobile terminal 100 displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 may display captured or received images respectively or simultaneously, and display a UI and a GUI.

Meanwhile, as described above, when the display unit 151 and the touch pad form a mutual layer structure to form a touch screen, the display unit 151 may be used as an input device in addition to the output device. If the display unit 151 is configured as a touch screen, the display unit 151 may include a touch screen panel, a touch screen panel controller, and the like. In this case, the touch screen panel is a transparent panel attached to the outside and may be connected to the internal bus of the mobile terminal 100.

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

The touch screen panel keeps an eye on the contact result and sends corresponding signals to the touch screen panel controller when there is a touch input. The touch screen panel controller processes the signals and then transmits the corresponding data to the controller 180 so that the controller 180 can know whether there is a touch input and which area of the touch screen has been touched.

In addition, the display unit 151 may include a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. It may include at least one of the display (3D display).

Some of these displays can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparent OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the 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 implementation form of the mobile terminal 100. For example, an external display unit (not shown) and an internal display unit (not shown) may be simultaneously provided in the mobile terminal 100.

The audio output module 153 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, In addition, the sound output module 153 outputs a sound signal related to a function performed in the mobile terminal 100, for example, a call signal reception sound and a message reception sound. The sound output module 153 may include a receiver, a speaker, a buzzer, and the like.

The sound output module 153 changes the sound output direction according to the position of the user during a video call, music, video playback, or broadcast viewing. The sound output module 153 changes the sound output direction according to the position of the user to minimize the attenuation of the sound pressure to implement an improved call environment and sound quality.

The alarm unit 155 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal 100 include call signal reception, message reception, and key signal input. The alarm unit 155 outputs a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal may be output in the form of vibration. The alarm unit 155 may output a signal for notifying when a call signal or a message is received. In addition, when the key signal is input, the alarm unit 155 may output the signal as a feedback to the key signal input. The user may recognize the occurrence of an event through the signal output from the alarm unit 155. Of course, the signal for event occurrence notification may be output through the display unit 151 or the sound output module 153.

The haptic module 157 generates various haptic effects that a user can feel. A representative example of the haptic effect generated by the haptic module 157 is a vibration effect. When the haptic module 157 generates vibration by the tactile effect, the intensity and pattern of the vibration generated by the haptic module 157 may be converted, and may be output by synthesizing different vibrations or sequentially.

In addition to the vibration, the haptic module 157 is not only caused by vibration, but also by stimulation by an arrangement of pins vertically moving with respect to the contact skin surface. Various tactile effects can be generated, such as effects of stimulation through contact of electrodes, effects of stimulation using electrostatic force, and effects of reproducing cold and cold feeling using elements capable of endotherm or heat generation. The haptic module 157 may not only deliver the haptic effect through direct contact, but also implement the haptic effect through the muscles of the user's finger or arm. Two or more haptic modules 157 may be provided according to a configuration aspect of the mobile terminal 100.

The memory 160 may store a program for processing and controlling the controller 180 and may provide a function for temporarily storing input or output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done.

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), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. In addition, the mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 150 on the Internet.

The interface unit 170 serves as an interface with all external devices connected to the mobile terminal 100. Examples of external devices connected to the mobile terminal 100 include a wired / wireless headset, an external charger, a wired / wireless data port, a memory card, a card socket such as a SIM / UIM card, and audio I / O (Input). / Output) terminal, video I / O (Input / Output) terminal, earphone, and the like. The interface unit 170 may receive data from the external device or receive power and transmit the data to each component in the mobile terminal 100, and may transmit the data in the mobile terminal 100 to the external device. .

The interface unit 170 may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user. May be a passage that is delivered to the mobile terminal. Various command signals or power input from the cradle may be operated as signals for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the operation of each unit to control the overall operation of the mobile terminal 100. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia playback module 181 for multimedia playback. The multimedia playback module 181 may be configured in hardware in the controller 180 or may be configured in software separately from the controller 180. The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, respectively.

The controller 180 calculates the position of the user from the image of the user input to the camera 121 and changes the direction of the sound output by the sound output module 153 according to the calculated position of the user. The controller 180 tracks the user's movement from the user's image input to the camera 121 to calculate the user's position from the speed, direction, position, and distance of the user.

The controller 180 calculates an angle and direction of a sound to be output by the sound output module 153 based on the calculated position of the user. The controller 180 may calculate an angle and a direction of the speaker included in the sound output module 153.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

In the above, the mobile terminal related to the present invention has been described in terms of components according to functions. Hereinafter, referring to FIG. 2, the mobile terminal related to the present invention will be further described in terms of components according to appearance. Hereinafter, for convenience of description, a bar type mobile terminal having a front touch screen among various types of mobile terminals such as a folder type, a bar type, a swing type, a slider type, and the like will be described as an example. However, the present invention is not limited to the bar type mobile terminal, but can be applied to all types of mobile terminals including the above-described type.

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

Referring to FIG. 2, various electronic components are embedded in the case 101 forming the exterior of the mobile terminal 100. The case 101 may be composed of a front case, a rear case and at least one intermediate case. The case 101 may be formed by injecting a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti).

The case 101 may include a display unit 151, an audio output module 153, a camera 121, and a user input unit 130.

The display unit 151 includes a liquid crystal display (LCD), organic light emitting diodes (OLED), and the like, which visually express information. Since the touch pad is superimposed on the display unit 151 in a layer structure, the display unit 151 may operate as a touch screen, so that input of information by a user's touch may be possible.

The user input unit 130 may be adopted in any manner as long as the user is operating in a tactile manner while giving a tactile feeling. For example, the user input unit 130 may be implemented as a dome switch or a touch pad that may receive a command or information by a user's push or touch operation, or a wheel or jog method that rotates a key, or a manipulation method such as a joystick. Or the like.

The camera 121 may be implemented to be suitable for capturing an image or a video of a user or the like. The camera 121 disposed on the front of the case 101 is used to photograph a face of a user in a video call or the like. The camera 121 receives an image of the user and transmits the image to the controller 180 so that the controller 180 can calculate the location of the user by tracking the user's movement. The camera 121 preferably receives the user's image continuously so that the user can track the movement.

The sound output module 153 may be implemented in the form of a receiver or a speaker for outputting sound. The sound output module 153 changes the sound output direction according to the position of the user during a video call, music or video playback, or broadcast viewing. The sound output module 153 outputs sound according to the angle and direction of the sound calculated by the controller 180. The sound output module 153 changes the sound output direction according to the position of the user to minimize the attenuation of the sound pressure to implement an improved call environment and sound quality.

The sound output module 153 may include one or a plurality of speakers, and virtual surround stereo sound may be implemented regardless of the number of speakers. When the sound output module 153 includes one speaker, the user's face and the speaker direction are preferably 0 degrees. When the sound output module 153 includes stereo speakers, the direction of the center of the user's face and the left and right speakers may be 45 degrees. When the sound output module 153 implements the virtual surround stereo sound method, it is preferable to output sound at an appropriate position or direction according to the implementation method.

The sound output module 153 is preferably provided to be rotatable above the case 101. The sound output module 153 may be provided with various places such as the upper or lower part of the front of the case 101 and the side of the case 101 in various types of mobile terminals such as a folder type, a bar type, a swing type, a slider type, and the like. have. The sound output module 153 may be rotated in any of up, down, left, and right directions so as to output sound in any position or direction.

3 is a view showing the operation of a mobile terminal according to an embodiment of the present invention.

3A illustrates a case where the user U is located in front of the mobile terminal 100. When the camera 121 receives an image of the user and transmits the image to the controller 180, the controller 180 tracks the user's movement. The sound output module 153 preferably outputs sound toward the front during first reproduction.

As shown in FIG. 3B, when the user U moves, the camera 121 receives a moving image of the user and transmits it to the controller 180. The controller 180 tracks the user's movement, calculates the user's position from the speed, the direction, and the distance change of the user, and calculates the angle and the direction of the sound output by the sound output module 153 based on the calculated user's position. Calculate The sound output module 153 outputs sound according to the angle and direction of the sound calculated by the controller 180.

4 is a diagram illustrating a structure of a sound output module 153 of a mobile terminal according to an embodiment of the present invention.

The sound output module 153 includes a speaker 153a for outputting sound, a speaker driver 153b for adjusting the direction of the speaker, and a speaker housing 153c for forming an appearance.

The speaker housing 153c includes a speaker 153a and electronic components for outputting sound. One or more speakers 153a may be provided. In this embodiment, one speaker is provided.

The speaker driver 153b drives the speaker housing 153c to adjust the direction of the speaker 153a. The speaker driver 153b is configured to rotate the speaker housing 153c in any of up, down, left, and right directions. The speaker driver 153b may be implemented by four flesh and rotating pillars whose height is adjusted to yaw, pitch, and roll the speaker housing 153c. The speaker driver 153b may be implemented as a universal joint or a ball joint to implement the above-described motion. The speaker driver 153b may drive the speaker housing 153c by including a small motor or a small actuator.

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

The camera 121 receives an image of the user (S110). The camera 121 preferably receives the user's image continuously so that the user can track the movement. The camera 121 transmits the input image of the user to the controller 180.

The controller 180 tracks the user's movement from the input image of the user (S120). The controller 180 tracks the user's speed, direction, position, and distance change from the user's image input to the camera 121.

The controller 180 calculates the location of the user by tracking the user's movement (S130). The controller 180 calculates the user's position from the speed, the direction, the position, and the distance change of the user.

The controller 180 calculates the angle and direction of the speaker 153a based on the calculated user's position (S140). The controller 180 calculates an angle and direction of a sound to be output by the sound output module 153. It is preferable to calculate the angle and direction of the speaker 153a according to the number or location of the speakers 153a and whether the virtual surround stereo sound system is implemented.

The controller 180 adjusts the angle and direction of the speaker 153a (S150). The controller 180 sends a command signal to the speaker driver 153b according to the calculated angle and direction, and the speaker driver 153b yaws, pitches, and rolls the speaker housing 153c. Adjust the angle and direction of the speaker 153a.

6 is a perspective view of a mobile terminal according to another embodiment of the present invention.

The mobile terminal 200 according to another embodiment of the present invention includes a case 201, a display unit 251, an audio output module 253, a camera 221, and a user input unit 230.

The sound output module 253 is provided in plurality, and is coupled to the side of the case 201 so that the sound output direction can be changed. The sound output module 253 is composed of stereo speakers so that the direction of the center of the user's face and the left and right speakers is 45 degrees. When the sound output module 253 implements the virtual surround stereo sound system, it is preferable to output sound at an appropriate position or direction according to the implementation method.

Since the case 201, the display unit 251, the camera 221, and the user input unit 230 are the same as or similar to those described in the mobile terminal 100 according to the above-described exemplary embodiment, a description thereof will be omitted.

7 is a perspective view of a mobile terminal according to another embodiment of the present invention.

The mobile terminal 300 according to another embodiment of the present invention includes a case 301, a display unit 351, an audio output module 353, a camera 321, and a user input unit 330. .

The sound output module 353 is provided in plural and is coupled to the lower front surface of the case 301 so that the sound output direction can be changed. The sound output module 353 is configured as a stereo speaker so that the direction of the center of the user's face and the left and right speakers are 45 degrees. When the sound output module 353 implements the virtual surround stereo sound system, it is preferable to output sound at an appropriate position or direction according to the implementation method.

Since the case 301, the display unit 351, the camera 321, and the user input unit 330 are the same as or similar to those described in the mobile terminal 100 according to the above-described embodiment, description thereof will be omitted.

8 is a perspective view of a mobile terminal according to another embodiment of the present invention.

The mobile terminal 400 according to another embodiment of the present invention includes a case 401, a display unit 451, an audio output module 453, a camera 421, and a user input unit 430. .

The sound output module 453 is coupled to the front upper part of the case 401 so that the sound output direction can be changed. The sound output module 453 is configured as a mono speaker so that the direction of the user's face and the speaker is 0 degrees.

Since the case 401, the display unit 451, the camera 421, and the user input unit 430 are the same as or similar to those described in the mobile terminal 100 according to the above-described exemplary embodiment, a description thereof will be omitted.

The mobile terminal and its control method according to the present invention are not limited to the configuration and method of the embodiments described as described above, the embodiments are all or part of each embodiment so that various modifications can be made It may alternatively be configured in combination.

On the other hand, the present invention can be implemented as a processor-readable code in a processor-readable recording medium provided in the mobile terminal, such as MSM (Mobile Station Modem). The processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and also include a carrier wave such as transmission through the Internet. The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

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

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

3 is a view showing the operation of a mobile terminal according to an embodiment of the present invention.

4 is a diagram illustrating a structure of a sound output module of a mobile terminal according to an embodiment of the present invention.

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

6 is a perspective view of a mobile terminal according to another embodiment of the present invention.

7 is a perspective view of a mobile terminal according to another embodiment of the present invention.

8 is a perspective view of a mobile terminal according to another embodiment of the present invention.

Claims (11)

A camera receiving an image of a user; A controller configured to calculate a location of the user from an image of the user input to the camera; And And a sound output module for changing a sound output direction according to the position of the user calculated by the controller. The method of claim 1, The sound output module, A speaker for outputting sound; And A mobile terminal comprising a speaker driver for adjusting the direction of the speaker in accordance with the position of the user calculated by the controller. The method of claim 1, The control unit calculates the position of the user by tracking the movement of the user from the image of the user input to the camera. The method of claim 1, The camera is disposed on the front surface and further comprises a case forming an appearance, The sound output module is rotatably coupled to the case. The method of claim 4, wherein The sound output module is rotatably coupled to the upper side of the case. The method of claim 4, wherein The sound output module is provided with a plurality of mobile terminals are rotatably coupled to each side of the case. The method of claim 4, wherein The sound output module is provided with a plurality of mobile terminals are rotatably coupled to the lower front of the case. The method of claim 4, wherein The sound output module is rotatably coupled to the front of the case. Receiving an image of a user; Calculating a location of the user from the input image of the user; And And changing a sound output direction according to the calculated position of the user. The method of claim 9, The location of the user is a control method of a mobile terminal for tracking and calculating the movement of the user. The method of claim 9, The control method of the mobile terminal to change the sound output direction by adjusting the direction of the speaker for outputting the sound.

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