KR20170074445A - Mobile terminal and operating method thereof - Google Patents

Abstract

A short range communication module that transmits a signal strength request signal to a plurality of speakers and receives a signal strength response signal corresponding to a signal strength request signal from a plurality of speakers; And a controller for calculating a distance between the mobile terminal and each speaker based on the transmitted signal strength request signal and the received signal strength response signal, and transmitting the control command to the plurality of speakers based on the calculated distance.

Description

[0001] MOBILE TERMINAL AND OPERATING METHOD THEREOF [0002]

The present invention relates to a mobile terminal and a method of operating the same.

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

The functions of mobile terminals are diversified. For example, there are data and voice communication, image shooting and video shooting through a camera, voice recording, music file playback through a speaker system, and output of 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 broadcast and multicast signals that provide visual content such as video or television programs.

Such a terminal has various functions, for example, in the form of a multimedia player having a complex function of shooting an image or moving picture, playing music or moving picture file, receiving a game, receiving a broadcast, 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.

Meanwhile, the mobile terminal can provide a function of controlling the multi-room speaker.

Multi-room speaker can control multiple speakers by using one controller. Group Play function that allows multiple speakers to play the same music at the same time, and Each Play function that each speaker can play different music do.

Conventionally, when controlling a plurality of speakers by using a mobile terminal, it is difficult to know where the speaker items actually displayed on the display unit are located.

Accordingly, when the user desires to adjust an arbitrary speaker, the user may have to individually check the speaker items of the speakers displayed on the display unit. In such a case, it is difficult to control the volume of other speakers that are not desired.

An object of the present invention is to provide a mobile terminal and a method of operating the same that can help each speaker item displayed in a mobile terminal to know which speaker item is actually located when the plurality of speakers are controlled using the mobile terminal do.

A mobile terminal according to an embodiment of the present invention includes a local area communication module that transmits a signal strength request signal to a plurality of speakers and receives a signal strength response signal corresponding to the signal strength request signal from the plurality of speakers; And a control unit for calculating a distance between the mobile terminal and each speaker on the basis of the transmitted signal strength request signal and the received signal strength response signal and transmitting a control command to the plurality of speakers based on the calculated distance .

According to another aspect of the present invention, there is provided a method of controlling a speaker of a mobile terminal, comprising: transmitting a receiver strength request signal to a plurality of speakers; Receiving a signal strength response signal corresponding to the signal strength request signal from the plurality of speakers; Calculating a distance between the mobile terminal and each speaker based on the transmitted signal strength request signal and the received signal strength response signal; And transmitting a control command to the plurality of speakers based on the calculated distance.

The mobile terminal and the method of operating the same according to an embodiment of the present invention may further include a display unit for displaying speaker items corresponding to the plurality of speakers in order of the calculated distances, The control unit may transmit a control command corresponding to the input to the corresponding speaker as it receives an input to one of the speaker items.

According to another aspect of the present invention, there is provided a mobile terminal and a method of operating the same, wherein the controller receives a volume control input for controlling a volume bar included in the speaker item, A corresponding control command can be transmitted.

According to an aspect of the present invention, there is provided a mobile terminal and an operation method thereof, wherein the controller receives an input to a volume key of the mobile terminal or an input to a representative volume control item displayed on the display unit And the control command corresponding to the input may be transmitted to the speaker whose distance is the closest.

According to an aspect of the present invention, there is provided a mobile terminal and method for operating the same, the method comprising: adjusting a volume of the mobile terminal to a greater distance as the calculated distance is closer to the plurality of speakers; Control command to be adjusted.

According to at least one of the embodiments of the present invention, speaker items of a plurality of speakers may be displayed in order from the mobile terminal in order to provide an intuitive volume control function.

In addition, according to at least one embodiment of the present invention, the volume of the speaker located closest to the mobile terminal can be adjusted by using the volume control button of the mobile terminal.

Also, according to at least one of the embodiments of the present invention, the volume of the near speaker may be increased, and the volume of the far speaker may be decreased to save power consumed by the plurality of speakers.

1 is a block diagram illustrating a mobile terminal according to the present invention.
2 is a flowchart illustrating a method for controlling a plurality of speakers of a mobile terminal according to an exemplary embodiment of the present invention.
3 is a graph showing a distance according to the RSSI value.
4 is a diagram illustrating a plurality of speakers through which a mobile terminal transmits control commands.
5 is a view for explaining an example of a speaker control screen for a plurality of speakers displayed by a display unit in the related art.
6 is a view for explaining a speaker control screen according to the first embodiment of the present invention.
7 to 8 are views for explaining a speaker control operation of the mobile terminal according to the second embodiment of the present invention.
9 is a diagram for explaining a speaker control operation of the mobile terminal according to the third embodiment of the present invention.
10 to 11 are views for explaining a speaker control operation of the mobile terminal according to the fourth embodiment of the present invention.

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.

1 is a block diagram illustrating a mobile terminal according to the present invention.

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 a power supply unit 190 ), And the like. The components shown in FIG. 1 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. 1 in order to drive an application program stored in the memory 170. 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 components listed above will be described in more detail with reference to FIG. 1 before explaining various embodiments implemented through the mobile terminal 100 as described above.

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, And a touch key disposed on the touch panel. Meanwhile, the virtual key or the visual key can be displayed on a touch screen having various forms, for example, a graphic, a text, an icon, a video, As shown in FIG.

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 then transmits the corresponding data to the control unit 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 .

Also, 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 allows data in the mobile terminal 100 to be transmitted 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 on 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 the magnetic induction phenomenon and a magnetic resonance coupling based on the electromagnetic resonance phenomenon from an external wireless power transmission apparatus 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.

Next, a communication system that can be implemented through the mobile terminal 100 according to the present invention will be described.

First, the communication system may use different wireless interfaces and / or physical layers. For example, wireless interfaces that can be used by a communication system include Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA) ), Universal mobile telecommunication systems (UMTS) (in particular Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A)), Global System for Mobile Communications May be included.

Hereinafter, for the sake of convenience of description, the description will be limited to CDMA. However, it is apparent that the present invention can be applied to all communication systems including an OFDM (Orthogonal Frequency Division Multiplexing) wireless communication system as well as a CDMA wireless communication system.

A CDMA wireless communication system includes at least one terminal 100, at least one base station (BS) (also referred to as a Node B or Evolved Node B), at least one Base Station Controllers (BSCs) , And a Mobile Switching Center (MSC). The MSC is configured to be coupled to a Public Switched Telephone Network (PSTN) and BSCs. The BSCs may be paired with the BS via a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL or xDSL. Thus, a plurality of BSCs may be included in a CDMA wireless communication system.

Each of the plurality of BSs may comprise at least one sector, and each sector may comprise an omnidirectional antenna or an antenna pointing to a particular direction of radial emission from the BS. In addition, each sector may include two or more antennas of various types. Each BS may be configured to support a plurality of frequency assignments, and a plurality of frequency assignments may each have a specific spectrum (e.g., 1.25 MHz, 5 MHz, etc.).

The intersection of sector and frequency assignment may be referred to as a CDMA channel. The BS may be referred to as a base station transceiver subsystem (BTSs). In this case, a combination of one BSC and at least one BS may be referred to as a "base station ". The base station may also indicate a "cell site ". Alternatively, each of the plurality of sectors for a particular BS may be referred to as a plurality of cell sites.

A broadcast transmission unit (BT) transmits a broadcast signal to terminals 100 operating in the system. The broadcast receiving module 111 shown in FIG. 1 is provided in the terminal 100 to receive a broadcast signal transmitted by the BT.

In addition, a Global Positioning System (GPS) may be associated with the CDMA wireless communication system to identify the location of the mobile terminal 100. The satellite aids in locating the mobile terminal 100. Useful location information may be obtained by two or more satellites. Here, the position of the mobile terminal 100 can be tracked using all the techniques capable of tracking the location as well as the GPS tracking technology. Also, at least one of the GPS satellites may optionally or additionally be responsible for satellite DMB transmissions.

The location information module 115 included in the mobile terminal is for detecting, computing, or identifying the location of the mobile terminal, and may include a Global Position System (GPS) module and a WiFi (Wireless Fidelity) 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 GPS module 115 calculates distance information and accurate time information from three or more satellites and then applies trigonometry to the calculated information to accurately calculate three-dimensional current location information according to latitude, longitude, and altitude can do. At present, a method of calculating position and time information using three satellites and correcting an error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 can calculate speed information by continuously calculating the current position in real time. However, it is difficult to accurately measure the position of the mobile terminal by using the GPS module in the shadow area of the satellite signal as in the room. Accordingly, a WPS (WiFi Positioning System) can be utilized to compensate the positioning of the GPS system.

The WiFi Positioning System (WPS) is a system in which a mobile terminal 100 uses a WiFi module included in the mobile terminal 100 and a wireless AP (wireless access point) transmitting or receiving a wireless signal with the WiFi module, Is a technology for tracking a location of a wireless local area network (WLAN) using WiFi.

The WiFi location tracking system may include a Wi-Fi location server, a mobile terminal 100, a wireless AP connected to the mobile terminal 100, and a database in which certain wireless AP information is stored.

The mobile terminal 100 connected to the wireless AP can transmit the location information request message to the Wi-Fi location server.

The Wi-Fi position location server extracts information of the wireless AP connected to the mobile terminal 100 based on the location information request message (or signal) of the mobile terminal 100. The information of the wireless AP connected to the mobile terminal 100 may be transmitted to the Wi-Fi position location server through the mobile terminal 100, or may be transmitted from the wireless AP to the Wi-Fi location server.

The information of the wireless AP to be extracted based on the location information request message of the mobile terminal 100 includes a MAC address, an SSID (Service Set IDentification), a Received Signal Strength Indicator (RSSI), a Reference Signal Received Power (RSRP) Reference Signal Received Quality), channel information, Privacy, Network Type, Signal Strength, and Noise Strength.

As described above, the Wi-Fi position location server can receive the information of the wireless AP connected to the mobile terminal 100 and extract the wireless AP information corresponding to the wireless AP to which the mobile terminal is connected from the pre-established database. In this case, the information of any wireless APs stored in the database includes at least one of MAC address, SSID, channel information, privacy, network type, radius coordinates of the wireless AP, building name, Available), the address of the AP owner, telephone number, and the like. At this time, in order to remove the wireless AP provided using the mobile AP or the illegal MAC address in the positioning process, the Wi-Fi location server may extract only a predetermined number of wireless AP information in order of RSSI.

Then, the Wi-Fi location server can extract (or analyze) the location information of the mobile terminal 100 using at least one wireless AP information extracted from the database. And compares the received information with the received wireless AP information to extract (or analyze) the location information of the mobile terminal 100.

As a method for extracting (or analyzing) the position information of the mobile terminal 100, a Cell-ID method, a fingerprint method, a triangulation method, and a landmark method can be utilized.

The Cell-ID method is a method of determining the position of the mobile station with the strongest signal strength among neighboring wireless AP information collected by the mobile terminal. Although the implementation is simple, it does not cost extra and it can acquire location information quickly, but there is a disadvantage that positioning accuracy is lowered when the installation density of the wireless AP is low.

The fingerprint method collects signal strength information by selecting a reference position in a service area, and estimates the position based on the signal strength information transmitted from the mobile terminal based on the collected information. In order to use the fingerprint method, it is necessary to previously convert the propagation characteristics into a database.

The triangulation method is a method of calculating the position of the mobile terminal based on the coordinates of at least three wireless APs and the distance between the mobile terminals. (Time of Arrival, ToA), Time Difference of Arrival (TDoA) in which a signal is transmitted, and the time difference between the wireless AP and the wireless AP, in order to measure the distance between the mobile terminal and the wireless AP. , An angle at which a signal is transmitted (Angle of Arrival, AoA), or the like.

The landmark method is a method of measuring the position of a mobile terminal using a landmark transmitter that knows the location.

Various algorithms can be utilized as a method for extracting (or analyzing) the location information of the mobile terminal.

The location information of the extracted mobile terminal 100 is transmitted to the mobile terminal 100 via the Wi-Fi location server, so that the mobile terminal 100 can acquire the location information.

The mobile terminal 100 may be connected to at least one wireless AP to obtain location information. At this time, the number of wireless APs required to acquire the location information of the mobile terminal 100 may be variously changed according to the wireless communication environment in which the mobile terminal 100 is located.

Next, an operation method of the mobile terminal according to the embodiment of the present invention will be described with reference to FIG. 2 to FIG.

2 is a flowchart illustrating a method for adjusting a volume of a plurality of speakers of a mobile terminal according to an exemplary embodiment of the present invention.

The short-range communication module 114 transmits a signal strength RSSI request signal to a plurality of speakers (S101).

The short range communication module 114 may transmit a signal strength RSSI signal to a plurality of speakers to calculate the distance between the mobile terminal 100 and each of the speakers. The RSSI may be an index that can calculate the distance between the mobile terminal 100 and each speaker.

The meaning of the RSSI is as follows.

Received Signal Strength Indication (RSSI) refers to the amount of power received at the wireless receiver. The unit is dBm, and the range of RSSI values is usually from -99 to -35. Since the RSSI is inversely proportional to the square of the distance, the larger the value, the stronger the received signal is. Likewise, as the distance increases, the strength of the signal becomes weaker.

Generally, the closer the distance between the beacon and the beacon, the stronger the intensity of the signal. Therefore, the larger the RSSI value, the closer the distance is. Therefore, the RSSI value can be used as an index in calculating the distance. For example, if the RSSI value of the signal received from beacon B is -60 and the RSSI value of the signal received from beacon C is -40, then beacon A is closer to beacon C than beacon B Location.

FIG. 3 is a graph showing a distance according to a received signal strength (RSSI) value.

3, it can be seen that the larger the RSSI value is, the closer the distance is, and the smaller the RSSI value is, the greater the distance is.

However, there may be an error with the graph shown in FIG. 3 depending on the difference in the method of calculating the distance according to the RSSI value or the surrounding environment for calculating the signal size.

Fig. 2 will be described again.

The short-range communication module 114 receives the RSSI response signal corresponding to the RSSI request signal from the plurality of speakers (S103).

Upon receipt of the RSSI request signal from the mobile terminal 100, a plurality of speakers may transmit an RSSI response signal to the mobile terminal 100.

The short range communication module 114 of the mobile terminal 100 may receive an RSSI response signal of each speaker transmitted from a plurality of speakers.

The control unit 180 calculates a distance between the mobile terminal 100 and each speaker based on the RSSI request signal and the RSSI response signal (S105).

The strength of the RSSI request signal transmitted from the mobile terminal 100 may be referred to as Tx power and the strength of the RSSI response signal received by the mobile terminal 100 from the plurality of speakers may be referred to as Rx power.

A method of calculating the distance between the mobile terminal 100 and each speaker using TX power and Rx power is as follows.

Path loss = (Tx power) - (Rx power) (1)

Path loss = 20 log (d1 / d2) (2)

distance = 10 ^ ((d2-Rx power) / 20) (3)

The path loss can be calculated from equation (1). The path loss may mean the difference between the transmitted signal strength and the received signal strength. Therefore, the path loss can be calculated by the difference between Tx power and Rx power.

Next, d2 can be calculated through equation (2). d1 and d2 may mean the distance between the transmitting point and any one point different from each other. d1 may correspond to a reference value for calculating the distance using the path loss. Therefore, for example, when d1 is 1m, d2 can be calculated by substituting the path loss obtained by equation (1) into equation (2).

Finally, the distance between the mobile terminal 100 and the speaker can be calculated through Equation (3). distance can be obtained by calculating the difference between d2 and the received signal strength obtained from Eq. (2), and dividing the value by 20 by n.

The mobile terminal 100 may calculate the distance between the mobile terminal 100 and each of the speakers by applying the above calculation process to the plurality of speakers.

The control unit 180 may periodically calculate the distance between the mobile terminal 100 and the speaker as described above.

Specifically, the control unit 180 periodically transmits the RSSI request signal to the plurality of speakers and receives the RSSI response signal to update the distance between the mobile terminal 100 and the plurality of speakers, which can be continuously changed. have.

As the user moves with the mobile terminal 100, the distance between the mobile terminal 100 and each speaker can be continuously changed.

Next, the control unit 180 transmits a control command to a plurality of speakers based on the calculated distance (S107).

Next, referring to Figs. 4 to 11, various embodiments in which the control unit 180 transmits a control command to a plurality of speakers based on the calculated distance will be described. Fig.

4 is a diagram illustrating a plurality of speakers through which a mobile terminal transmits control commands.

As shown in FIG. 4, the mobile terminal can adjust the volume of four speakers. Four speakers may be referred to as a first speaker 401, a second speaker 402, a third speaker 403, and a fourth speaker 404, respectively. However, this is illustrative and the number of speakers that the mobile terminal 100 controls is not limited.

The mobile terminal 100 adjusts the volume of the first speaker 401, the second speaker 402, the third speaker 403 and the fourth speaker 404, It is assumed that the distance between the first speaker 401, the second speaker 402, the third speaker 403, and the fourth speaker 404 in this order.

The mobile terminal 100 may transmit a control command to at least one of the first speaker 401, the second speaker 402, the third speaker 403 and the fourth speaker 404.

The user can control at least one of the first speaker 401, the second speaker 402, the third speaker 403 and the fourth speaker 404 through the mobile terminal 100. [

Next, a first embodiment of a control command transmitted from the mobile terminal 100 to a plurality of speakers will be described with reference to Figs. 5 to 6. Fig.

5 is a view for explaining an example of a speaker control screen for a plurality of speakers displayed on the display unit 151 according to the related art.

For example, the speaker control screen can display the speaker items of a plurality of speakers by name.

The speaker control screen may include at least one of a representative volume control item 500, a speaker A item 501, a speaker B item 502, a speaker C item 503, and a speaker D item 504.

The representative volume control item 500 may be a menu for adjusting the volume of the speakers A, B, C, and D at one time. For example, if the volume is increased by 2 through the representative volume control item 500, the volume of the speaker A, speaker B, speaker C, and speaker D may increase by 2 in the current volume, respectively.

Each speaker speaker item 501 to 504 is an item for individually controlling each speaker. For example, if the volume of speaker A 501 is increased by 3, only the volume of speaker A is increased by 3 from the current volume, and the speakers B, C, and D can maintain the current volume.

However, according to the prior art, there is a disadvantage that each speaker displayed on the speaker control screen can not know where the speaker is located. For example, the user desires to adjust the volume of the first speaker 401 shown in FIG. 4, but it has a disadvantage in that it is not possible to know which speaker item controls the first speaker in the speaker control screen shown in FIG. 5 have.

In order to solve this disadvantage, the display unit 151 may display speaker items in order of distance between the mobile terminal 100 and a plurality of speakers.

6 is a view for explaining a speaker control screen in which speaker items are displayed in order of distance between a mobile terminal and a plurality of speakers.

The control unit 180 may receive an input for selecting the sorting by distance sorting icon 640. [

The dashed mark in the sort icon 640 can be displayed as it receives the input clicking on the sort icon 640.

The sort icon 640 may include at least one of a name order, a distance order, and a frequency order.

The control unit 180 may display the speaker items in the order of the closest distance speaker based on the distance calculated between the mobile terminal 100 and the plurality of speakers.

6 is displayed in the order of Speaker C, Speaker B, Speaker D, and Speaker A, and the controller 180 controls the first speaker 401 of FIG. 4 through the speaker C item 601, The third speaker 403 of Figure 4 is connected to the speaker D item 603 and the fourth speaker 404 is connected to the speaker A item 604 via the speaker B item 602, Lt; / RTI >

The speaker control screen may further include an indicator 650 indicating a calculated distance for each of the speakers.

The control unit 180 may transmit a control command corresponding to the input to the corresponding speaker upon receiving the input of any one of the speaker items.

In addition, the user can adjust the volume of the speaker closest to the mobile terminal 100 through the speaker item 601 of the speaker C through the speaker control screen as shown in FIG.

The control command may include at least one of a volume control command of the speaker through the volume bar 610, a song playback control command via the playback bar 620, and an audio equalizer control command via the EQ icon 630 as shown in FIG. 6 . ≪ / RTI >

Next, a second embodiment of a control command transmitted by the mobile terminal 100 to a plurality of speakers will be described with reference to Figs. 7 to 8. Fig.

The control unit 180 receives a control command corresponding to the input to the nearest speaker at a distance calculated according to input of the volume key of the mobile terminal 100 or input of the representative volume control item displayed on the display unit 151 Lt; / RTI >

7 is a view for explaining an operation of adjusting a volume of a speaker that is closest to the mobile terminal when receiving an input for adjusting a volume key of the mobile terminal.

As shown in FIG. 7, the control unit 180 may receive an input for adjusting the volume key 700. The control unit 180 may transmit a control command corresponding to the received input to the first speaker 401 of FIG. 4, which is a speaker having a calculated distance closest to the received input, as the control unit 180 receives the volume key control input.

Alternatively, the control unit 180 may transmit the control command to the preset most preferred speaker upon receiving the volume key control input. The most preferred speaker may correspond to a speaker preset from the user.

8 is a view for explaining an operation of adjusting the volume of the speaker closest to the mobile terminal when receiving an input for adjusting a representative speaker item of the mobile terminal.

As shown in FIG. 8, the speaker control screen displayed by the display unit 151 may include a representative volume control item 800.

According to an embodiment of the present invention, when receiving the input for adjusting the representative volume control item 800, the control unit 180 may transmit a control command to all of the plurality of speakers connected to the mobile terminal 100.

Alternatively, when the control unit 180 receives an input for adjusting the representative volume control item 800, the controller 180 controls the input to the input to the closest speaker to the mobile terminal 100, A corresponding control command can be transmitted.

8, the control unit 180 transmits a command for increasing the volume of the speaker to the mobile terminal (for example, the speaker) through the input to the right from the point 801 of the representative volume control item 800, 100 to the nearest speaker. Alternatively, a command for reducing the volume of the speaker may be transmitted from the mobile terminal 100 to the nearest speaker through an input to the left of the point 801 by dragging and dropping. Alternatively, upon receipt of an input for selecting the speaker icon 802, a control command for controlling the speaker to be muted may be transmitted to the speaker closest to the mobile terminal 100.

Next, a third embodiment of a control command transmitted from the mobile terminal to a plurality of speakers will be described with reference to FIG.

According to the third embodiment of the present invention, the control unit 180 may adjust the volume to a larger value as the distance calculated by the plurality of speakers becomes closer, and adjust the volume to be smaller as the calculated distance increases.

The control unit 180 may transmit a control command for adjusting the volume so as to be inversely proportional to the distance when receiving an automatic volume adjustment input through a specific button or receiving an input for selecting a menu displayed on the display unit 151, .

Specifically, it may be an input for adjusting a volume by giving a weight in inverse proportion to a calculated distance to a plurality of speakers.

The mobile terminal 100 has a distance from the first speaker 901 to 3, a distance to the second speaker 902 to 4, a distance to the third speaker 903 to 6, The distance from the speaker 904 can be calculated to be 10. The weight of the first speaker 901 is 10, the weight of the second speaker 902 is 6, the weight of the third speaker 903 is 4, and the weight of the third speaker 903 is 4, The weight of the fourth speaker 904 can be set to 3. [

Therefore, the control unit 180 may transmit a control command to adjust the volume to a plurality of speakers (change volume) by calculating (change volume) = (current volume) x (weight).

The plurality of speakers can adjust the volume according to the received control command (change volume).

As a result, the volume of the speaker closer to the mobile terminal 100 may be increased, and the volume of the speaker may be decreased as the distance from the mobile terminal 100 is increased.

The user has the effect of hearing a louder sound coming from nearby loudspeakers and adjusting the loudspeaker from a distant loudspeaker to be almost inaudible.

The weights given according to the distance between the mobile terminal 100 and the plurality of speakers, which have been described in the foregoing, are exemplary and the volume may be adjusted using weights calculated in other manners.

Next, a fourth embodiment of a control command transmitted by the mobile terminal 100 to a plurality of speakers will be described with reference to FIGS. 10 to 11. FIG.

The mobile terminal 100 can display the speaker control screen in the order of frequently used speakers.

The order of frequently used speakers can be counted according to the frequency of transmission of the control command to each speaker.

For example, the memory 170 controls the first speaker 1001 five times, the second speaker 1002 three times, the third speaker 1003 nine times, and the fourth speaker 1003, The number of times the control command is transmitted twice to the speaker 1004 can be stored.

The control unit 180 may display the speaker control screen in the order of the speaker that has performed the most volume adjustment, as shown in FIG. 11, based on the number of times stored in the memory 170. FIG.

The controller 180 can sort the speaker items of the plurality of speakers according to the frequency at which the control command was transmitted as the controller 180 receives an input for selecting the frequency order from the sorting icon 1105. [

11, the display unit 151 includes a speaker item 1101 of the third speaker, a speaker item 1102 of the first speaker, a speaker item of the second speaker 1103, and a speaker item 1104 of the fourth speaker.

Next, a fifth embodiment of a control command transmitted from the mobile terminal 100 to a plurality of speakers will be described.

When receiving an input for selecting one of the speaker items displayed on the speaker control screen, the control unit 180 transmits a command for outputting a sound informing the position of the speaker to the speaker corresponding to the selected menu. As the selected speaker receives the command, it can output a sound informing its own position.

In this way, the user can hear the position of the sound of the notification sound when the user selects the speaker item, and can know the position of the speaker through which the volume of the speaker can be adjusted through the speaker item.

The volume adjustment for the plurality of speakers according to the first to fifth embodiments may be limited when there are a plurality of mobile terminals 100. [

For example, the first mobile terminal 100 may transmit control commands to the first speaker, the second speaker, the third speaker, and the fourth speaker, respectively. However, in addition to the first mobile terminal 100, the second mobile terminal 100 may also be located within a certain distance of the second speaker. In this case, if the distance between the second mobile terminal 100 and the second mobile terminal 100 is closer than that of the first mobile terminal 100, the second speaker transmits the volume control corresponding to the control command of the first mobile terminal 100 . ≪ / RTI > The second speaker can perform only the volume adjustment corresponding to the control command received from the second mobile terminal 100. [

Through the above-described embodiments, the mobile terminal 100 can perform the volume adjustment of the plurality of speakers more intuitively.

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.

Claims (10)

A short range communication module that transmits a signal strength request signal to a plurality of speakers and receives a signal strength response signal corresponding to the signal strength request signal from the plurality of speakers; And
And a controller for calculating a distance between the mobile terminal and each speaker on the basis of the transmitted call signal strength request signal and the received call signal strength response signal and transmitting a control command to the plurality of speakers based on the calculated distance .
The method according to claim 1,
Further comprising a display unit for displaying speaker items corresponding to each of the plurality of speakers in the order of the calculated distances,
The control unit
And transmits a control command corresponding to the input to the corresponding speaker upon receiving an input to any one of the speaker items.
3. The method of claim 2,
The control unit
And transmits a control command corresponding to the volume control input to the corresponding speaker upon receiving a volume control input for controlling a volume bar included in the speaker item.
3. The method of claim 2,
The control unit
And transmits a control command corresponding to the input to the speaker having the calculated distance as the input of the volume key of the mobile terminal or the input of the representative volume control item displayed on the display unit.
The method according to claim 1,
The control unit
Wherein the controller controls the volume to be larger as the calculated distance approaches the plurality of speakers and controls the volume to be smaller as the calculated distance increases.
Transmitting a signal strength request signal to a plurality of speakers;
Receiving a signal strength response signal corresponding to the signal strength request signal from the plurality of speakers;
Calculating a distance between the mobile terminal and each speaker based on the transmitted signal strength request signal and the received signal strength response signal; And
And transmitting a control command to the plurality of speakers based on the calculated distance.
The method according to claim 6,
Further comprising displaying the speaker items corresponding to each of the plurality of speakers in order of the calculated distances,
The step of transmitting the control command
And transmitting a control command corresponding to the input to the corresponding speaker upon receiving an input to any one of the speaker items.
8. The method of claim 7,
The step of transmitting the control command
And transmitting a control command corresponding to the volume control input to the corresponding speaker upon receiving a volume control input for adjusting a volume bar included in the speaker item.
8. The method of claim 7,
The step of transmitting the control command
And transmitting a control command corresponding to the input to the speaker having the calculated distance as the input of the volume key or the representative volume control item of the mobile terminal is received .
The method according to claim 6,
The step of transmitting the control command
And controlling the volume of the speaker to be larger as the calculated distance approaches the plurality of speakers, and transmitting a control command to adjust the volume to be smaller as the calculated distance increases.

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