KR102364308B1 - Mobile terminal and operating method thereof - Google Patents

Abstract

The present invention provides a user input unit for receiving an input for displaying a content playlist; a short-range communication module for performing short-range communication with a plurality of speakers; and a control unit for controlling the user input unit and the short-range communication module, wherein the control unit transmits a first command for downloading the content included in the content playlist to the speaker that is not downloading any content among the plurality of speakers, A second command for transmitting a request signal for finding a speaker from which the content has been downloaded according to 1 command to a plurality of speakers, receiving a response signal corresponding to the request signal, and transmitting the downloaded content to other speakers is a response signal is transmitted to the transmitting speaker.

Description

Mobile terminal and its operating method {MOBILE TERMINAL AND OPERATING METHOD THEREOF}

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

The terminal may be divided into a 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 depending on whether the user can carry it directly.

The functions of mobile terminals are diversifying. For example, there are functions for data and voice communication, image and video shooting through a camera, voice recording, music file playback through a speaker system, and an image or video output to the display unit. Some terminals add an electronic game play function or perform a multimedia player function. In particular, recent mobile terminals can receive multicast signals that provide broadcast and visual content such as video or television programs.

As such a terminal is diversified in functions, for example, in the form of a multimedia device (Multimedia player) equipped with complex functions such as image or video recording, music or video file playback, game, broadcast reception, etc. is being implemented.

Meanwhile, the mobile terminal may include a function of controlling a multi-room speaker.

A multi-room speaker is used by controlling multiple speakers with a single controller, and provides a Group Play function that allows multiple speakers to play the same music at the same time, and a Each Play function that enables each speaker to play different music. .

Conventionally, when a mobile terminal controls a multi-room speaker, the control is divided into a master speaker for downloading a sound source and a slave speaker for receiving a sound source from the master speaker.

Therefore, according to the prior art, the slave speakers only need to receive the decoded data, while the master speaker downloads the content to be played alone, decodes the downloaded content, and transmits the decoded data to the slave speakers. The CPU usage of the master speaker is very high.

For this reason, the master speaker has a higher CPU throughput than the slave speakers, and a large memory is required. In addition, there is a problem in that the number of occurrences of buffering increases because sound source caching takes a long time.

An object of the present invention is to provide a mobile terminal in which a plurality of speakers distribute and perform downloading of content to be reproduced, decoding of downloaded content, and transmission of decoded data to other speakers, and an operating method thereof, in order to solve the above-mentioned problems.

A mobile terminal according to an embodiment of the present invention includes: a user input unit for receiving an input for displaying a content playlist; a short-range communication module for performing communication with a plurality of speakers; and a control unit for controlling the user input unit and the short-range communication module, wherein the control unit sends a first command for downloading the content included in the content playlist to a speaker that is not downloading any content among a plurality of speakers transmit, transmit a request signal for finding a speaker from which the content is downloaded according to the first command to the plurality of speakers, receive a response signal corresponding to the request signal, and transmit the downloaded content to other speakers A second command for transmission is transmitted to the speaker that has transmitted the response signal.

In accordance with an embodiment of the present invention, there is provided a method for controlling a speaker in a mobile terminal, the method comprising: receiving an input for displaying a content playlist; transmitting a first command for downloading content included in the content playlist to a speaker that is not downloading any content among a plurality of speakers; transmitting a request signal to search for a speaker from which the content has been downloaded to the plurality of speakers according to the first command; receiving a response signal corresponding to the request signal; and transmitting a second command for transmitting the downloaded content to other speakers to the speaker that has transmitted the response signal.

In a mobile terminal according to an embodiment of the present invention for achieving the object, the controller transmits a third command for playing the downloaded content or content received from another speaker to the plurality of speakers.

In a mobile terminal according to an embodiment of the present invention for achieving the object, the first command downloads a previously played content or a content to be played next based on the content playlist based on the content currently being played. contains instructions to

In a mobile terminal according to an embodiment of the present invention for achieving the object, the first command includes a command for preferentially downloading a content having the highest number of reproductions based on the content play list.

According to at least one of the embodiments of the present invention, there is an advantage in that the CPU processing amount and memory required for each speaker are lowered. Accordingly, there is an effect of reducing the frequency of playback interruptions and the buffering time required for song switching.

1 is a block diagram illustrating a mobile terminal related to the present invention.
2 is a block diagram for explaining a speaker related to the present invention.
3 is a flowchart illustrating a method for a mobile terminal to control a plurality of speakers according to an embodiment of the present invention.
4 is a diagram for explaining an example of a content play list.
5 is a diagram for explaining a connection relationship between a mobile terminal and a plurality of speakers according to the present invention.
6 is a view for explaining a step for the mobile terminal according to the present invention to transmit a content playback command to a plurality of speakers.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numbers regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, 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 system, and a slate PC. , tablet PCs, ultrabooks, wearable devices, for example, watch-type terminals (smartwatch), glass-type terminals (smart glass), HMD (head mounted display), etc. may be included. there is.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiment described in this specification may be applied to a fixed terminal such as a digital TV, a desktop computer, and a digital signage, except when applicable only to a mobile terminal. will be.

1 is a block diagram illustrating a mobile terminal related 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 the mobile terminal, so the mobile terminal described in this specification may have more or fewer components than those listed above.

More specifically, among the components, the wireless communication unit 110 is between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 and an external server. It may include one or more modules that enable wireless communication between them. 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 reception module 111 , a mobile communication module 112 , a wireless Internet module 113 , a short-range communication module 114 , and a location information module 115 . .

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

The sensing unit 140 may include one or more sensors for sensing at least one of information in the mobile terminal, information on the surrounding environment surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. Sensor (G-sensor), gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor: infrared sensor), fingerprint recognition sensor (finger scan sensor), ultrasonic sensor , optical sensors (eg, cameras (see 121)), microphones (see 122), battery gauges, environmental sensors (eg, barometers, hygrometers, thermometers, radiation detection sensors, It may include at least one of a thermal sensor, a gas sensor, etc.) and a chemical sensor (eg, an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification may combine and utilize information sensed by at least two or more of these sensors.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and includes at least one of a display unit 151 , a sound output unit 152 , a haptip module 153 , and an optical output unit 154 . can do. The display unit 151 may implement a touch screen by forming a layer structure with the touch sensor or being integrally formed. Such a touch screen may function as the user input unit 123 providing an input interface between the mobile terminal 100 and the user, and may provide an output interface between the mobile terminal 100 and the user.

The interface unit 160 serves as a passage with various types of external devices connected to the mobile terminal 100 . The interface unit 160 connects a device equipped with a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and an identification module. It may include at least one of a port, an audio input/output (I/O) port, a video input/output (I/O) port, and an earphone port. In response to the connection of the external device to the interface unit 160 , the mobile terminal 100 may 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) driven in the mobile terminal 100 , data for operation of the mobile terminal 100 , and commands. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the mobile terminal 100 from the time of shipment for basic functions (eg, incoming calls, outgoing functions, message reception, and outgoing functions) of the mobile terminal 100 . Meanwhile, the application program may be stored in the memory 170 , installed on the mobile terminal 100 , and driven to perform an operation (or function) of the mobile terminal by the controller 180 .

In addition to the operation related to the application program, the controller 180 generally controls the overall operation of the mobile terminal 100 . The controller 180 may provide or process appropriate information or functions to the user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170 .

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

The power supply unit 190 receives external power and internal power under the control of the control unit 180 to supply power to each component included in the mobile terminal 100 . The power supply unit 190 includes a battery, and the battery may be a built-in battery or a replaceable battery.

At least some of the respective components may operate in cooperation with each other in order to implement an operation, control, or control method of a mobile terminal according to various embodiments to be described below. Also, 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, before looking at various embodiments implemented through the mobile terminal 100 as described above, the above-listed components will be described in more detail with reference to FIG. 1 .

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

Mobile communication module 112, the technical standards or communication methods for mobile communication (eg, Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (CDMA2000), EV -Enhanced Voice-Data Optimized or Enhanced Voice-Data Only (DO), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), LTE-A (Long Term Evolution-Advanced, etc.) transmits and receives a radio signal to and from at least one of a base station, an external terminal, and a server on a mobile communication network constructed according to.

The wireless signal may include various types of data according to transmission/reception of a voice call signal, a video call signal, or a text/multimedia message.

The wireless Internet module 113 refers to a module for wireless Internet access, and may be built-in or external to the mobile terminal 100 . The wireless Internet module 113 is configured to transmit and receive wireless signals in a communication network according to wireless Internet technologies.

As wireless Internet technology, for example, WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World Interoperability for Microwave Access), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), etc., and the wireless Internet module ( 113) transmits and receives data according to at least one wireless Internet technology within a range including Internet technologies not listed above.

From the point of view that wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is made through a mobile communication network, the wireless Internet module 113 performs wireless Internet access through the mobile communication network. ) may be understood as a type of the mobile communication module 112 .

Short-range communication module 114 is for short-range communication, Bluetooth™, RFID (Radio Frequency Identification), infrared communication (Infrared Data Association; IrDA), UWB (Ultra Wideband), ZigBee, NFC At least one of (Near Field Communication), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, and Wireless Universal Serial Bus (USB) technologies may be used to support short-range communication. The short-distance communication module 114 is, between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or the mobile terminal 100 through wireless area networks (Wireless Area Networks). ) and another mobile terminal (100, or an external server) can support wireless communication between the network located. The local area network may be local area networks (Wireless Personal Area Networks).

Here, the other mobile terminal 100 is a wearable device capable of exchanging (or interworking) data with the mobile terminal 100 according to the present invention, for example, a smart watch, smart glasses. (smart glass) or 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 in the vicinity of the mobile terminal 100 . Furthermore, when the detected wearable device is a device authenticated to communicate with the mobile terminal 100 according to the present invention, the controller 180 transmits at least a portion of data processed by the mobile terminal 100 to the short-range communication module ( 114) to the wearable device. Accordingly, the user of the wearable device may use data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a call is received in the mobile terminal 100, the user performs a phone call through the wearable device, or when a message is received in the mobile terminal 100, the user receives the received call through the wearable device. It is possible to check the message.

The location information module 115 is a module for obtaining a location (or current location) of a mobile terminal, and a representative example thereof includes a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, if the mobile terminal utilizes a GPS module, it can acquire the location of the mobile terminal by using a signal transmitted from a GPS satellite. As another example, if the mobile terminal utilizes the Wi-Fi module, the location of the mobile terminal may be obtained based on information of the Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module 115 may perform any function of the other modules of the wireless communication unit 110 to obtain data on the location of the mobile terminal as a substitute or additionally. 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 input of image information (or signal), audio information (or signal), data, or information input from a user. For input of image information, the mobile terminal 100 has one Alternatively, a plurality of cameras 121 may be provided. The camera 121 processes an image frame such as a still image or a moving image obtained by an image sensor in a video call mode or a shooting mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170 . On the other hand, the plurality of cameras 121 provided in the mobile terminal 100 may be arranged to form a matrix structure, and through the cameras 121 forming the matrix structure as described above, various angles or focal points are applied to the mobile terminal 100 . A plurality of image information with 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 an external sound signal as electrical voice data. The processed voice data may be utilized in various ways according to a function (or an application program being executed) being performed by the mobile terminal 100 . Meanwhile, various noise removal algorithms for removing noise generated in the process of receiving an external sound signal may be implemented in the microphone 122 .

The user input unit 123 is for receiving information from a user, and when information is input through the user input unit 123 , the controller 180 may control the operation of the mobile terminal 100 to correspond to the input information. . Such a user input unit 123 is a mechanical input means (or a mechanical key, for example, a button located on the front, rear or side of the mobile terminal 100, a dome switch (dome switch), a jog wheel, jog switch, etc.) and a touch input means. As an example, the touch input means consists of a virtual key, a soft key, or a visual key displayed on the touch screen through software processing, or a part other than the touch screen. It may be made of a touch key (touch key) disposed on the. On the other hand, the virtual key or the visual key, it is possible to be displayed on the touch screen while having various forms, for example, graphic (graphic), text (text), icon (icon), video (video) or these can be made by a combination of

On the other hand, 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 sensing signal corresponding thereto. The controller 180 may control the driving or operation of the mobile terminal 100 or perform data processing, function, or operation related to an 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 or absence of an object approaching a predetermined detection surface or an object existing in the vicinity without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor 141 may be disposed in an inner region of the mobile terminal covered by the touch screen described above or near 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 type proximity sensor, a magnetic type proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the proximity sensor 141 may be configured to detect the proximity of an object having conductivity by a change in an electric field according to the proximity of the object. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of description, the act of approaching an object on the touch screen without contacting it so that the object is recognized that it is located on the touch screen is called “proximity touch”, and the touch The act of actually touching an object on the screen is called "contact touch". The position where the object is touched in proximity on the touch screen means a position where the object is perpendicular to the touch screen when the object is touched in proximity. The proximity sensor 141 may detect a proximity touch and a proximity touch pattern (eg, proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, etc.) there is. Meanwhile, the controller 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 printed on the touch screen. Furthermore, the controller 180 may control the mobile terminal 100 to process different operations or data (or information) according to whether a touch to the same point on the touch screen is a proximity touch or a contact touch. .

The touch sensor receives a touch (or touch input) applied to the touch screen (or the display unit 151) using at least one of various touch methods such as a resistive film method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method. detect

As an example, the touch sensor may be configured to convert a change in pressure applied to a specific part of the touch screen or a change in capacitance occurring in a specific part of the touch screen into an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, an electrostatic capacitance at the time of touch, etc. in which a touch object applying a touch on the touch screen is touched on the touch sensor. Here, the touch object is an object that applies a touch to the touch sensor, and may be, for example, a finger, a touch pen, a stylus pen, or a pointer.

As such, when there is a touch input to the touch sensor, a signal(s) corresponding thereto is sent to the touch controller. The touch controller processes the signal(s) and then transmits corresponding data to the controller 180 . Accordingly, the controller 180 can know which area of the display unit 151 has been touched, and the like. Here, the touch controller may be a component separate from the controller 180 , or may be the controller 180 itself.

Meanwhile, the controller 180 may perform different controls or may perform the same control according to the type of the touch object that touches the touch screen (or a touch key provided in addition to the touch screen). Whether to perform different control or the same control according to the type of the touch object may be determined according to the current operating state of the mobile terminal 100 or a running application program.

On the other hand, the above-described touch sensor and proximity sensor independently or in combination, a short (or tap) touch on the touch screen (short touch), long touch (long touch), multi touch (multi touch), drag touch (drag touch) ), flick touch, pinch-in touch, pinch-out touch, swype touch, hovering touch, etc. It can sense touch.

The ultrasonic sensor may recognize position information of a sensing target by using ultrasonic waves. Meanwhile, the controller 180 may calculate the position of the wave source through information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source may be calculated using the property that light is much faster than ultrasonic waves, that is, the time at which light arrives at the optical sensor is much faster than the time at which ultrasonic waves reach the ultrasonic sensor. More specifically, the position of the wave source may be calculated using a time difference from the time that the ultrasonic wave arrives using light as a reference signal.

On the other hand, the camera 121 as seen in the configuration of the input unit 120 includes at least one of a camera sensor (eg, CCD, CMOS, etc.), a photo sensor (or image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to detect a touch of a sensing target for a 3D stereoscopic image. The photo sensor may be stacked on the display device, and the photo sensor is configured to scan the motion of a sensing target close to the touch screen. More specifically, the photo sensor mounts a photo diode and TR (transistor) in rows/columns and scans the contents placed on the photo sensor using an electrical signal that changes according to the amount of light applied to the photo diode. That is, the photo sensor calculates the coordinates of the sensing target according to the amount of change in light, and through this, location information of the sensing target can be obtained.

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 in 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.

A three-dimensional display method such as a stereoscopic method (glasses method), an auto stereoscopic method (glassesless method), or a projection method (holographic method) may be applied to the stereoscopic display unit.

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, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output unit 152 also outputs a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100 . The sound 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 representative example of the tactile effect generated by the haptic module 153 may be vibration. The intensity and pattern of vibration generated by the haptic module 153 may be controlled by a user's selection or setting of the controller. For example, the haptic module 153 may synthesize and output different vibrations or output them sequentially.

In addition to vibration, the haptic module 153 is configured to respond to stimuli such as a pin arrangement that moves vertically with respect to the contact skin surface, a jet force or suction force of air through a nozzle or an inlet, rubbing against the skin surface, contact of an electrode, electrostatic force, etc. Various tactile effects can be generated, such as the effect of heat absorption and the effect of reproducing a feeling of coolness and warmth using an element capable of absorbing heat or generating heat.

The haptic module 153 may not only deliver a tactile effect through direct contact, but may also be implemented so that the user can feel the tactile effect through a muscle sense such as a finger or arm. Two or more haptic modules 153 may be provided according to the configuration of the mobile terminal 100 .

The light output unit 154 outputs a signal for notifying the occurrence of an event by using the light of the light source of the mobile terminal 100 . Examples of the event occurring in the mobile terminal 100 may be 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 optical output unit 154 is implemented as the mobile terminal emits light of a single color or a plurality of colors toward the front or rear. The signal output may be terminated when the mobile terminal detects the user's event confirmation.

The interface unit 160 serves as a passage with all external devices connected to the mobile terminal 100 . The interface unit 160 receives data from an external device, receives power and transmits it to each component inside the mobile terminal 100 , or transmits data inside the mobile terminal 100 to an external device. For example, a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, a port for connecting a device equipped with an identification module (port), an audio I/O (Input/Output) port, a video I/O (Input/Output) port, an earphone port, etc. may be included in the interface unit 160 .

On the other hand, the identification module is a chip storing various types of information for authenticating the use authority of the mobile terminal 100, a user identification module (UIM), a subscriber identity module (subscriber identity module; SIM), universal user authentication It may include a universal subscriber identity module (USIM) and the like. A device equipped with an identification module (hereinafter, 'identification device') may be manufactured in the form of a smart card. Accordingly, the identification device may be connected to the terminal 100 through the interface unit 160 .

In addition, when the mobile terminal 100 is connected to an external cradle, the interface unit 160 becomes a passage through which power from the cradle is supplied to the mobile terminal 100, or is input from the cradle by a user. Various command signals may be a path through which the mobile terminal 100 is transmitted. Various command signals or the power input from the cradle may be operated as signals 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 may temporarily store input/output data (eg, a phone book, a message, a still image, a moving picture, etc.). The memory 170 may store data related to vibrations and sounds of various patterns output when a touch input on the touch screen is input.

Memory 170 is a flash memory type (flash memory type), hard disk type (hard disk type), SSD type (Solid State Disk type), SDD type (Silicon Disk Drive type), multimedia card micro type (multimedia card micro type) ), card-type memory (such as SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read (EEPROM) -only memory), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk may include at least one type of storage medium. The mobile terminal 100 may be operated in relation to a web storage that performs a storage function of the memory 170 on the Internet.

Meanwhile, as described above, the controller 180 controls the operation related to the application program and the general operation of the mobile terminal 100 in general. For example, if the state of the mobile terminal satisfies a set condition, the controller 180 may execute or release a lock state restricting input of a user's control command to applications.

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

The power supply unit 190 receives external power and internal power under the control of the control unit 180 to supply power required for operation of each component. The power supply unit 190 includes a battery, and the battery may be a built-in battery configured to be rechargeable, 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 the interface 160 to which an external charger that supplies 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 uses one or more of an inductive coupling method based on a magnetic induction phenomenon or a resonance coupling method based on an electromagnetic resonance phenomenon from an external wireless power transmitter. power can be transmitted.

Meanwhile, various embodiments below may be implemented in a computer-readable recording medium 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 air interfaces and/or physical layers. For example, the air interfaces available by a communication system include Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA). ), Universal Mobile Telecommunications Systems (UMTS) (especially Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A)), Global System for Mobile Communications (GSM), etc. may be included.

Hereinafter, for 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 CDMA wireless communication systems as well as OFDM (Orthogonal Frequency Division Multiplexing) wireless communication systems.

The CDMA wireless communication system includes at least one terminal 100, at least one base station (Base Station, BS (also referred to as Node B or Evolved Node B)), and at least one base station controller (Base Station Controllers, BSCs). ), and a mobile switching center (MSC). The MSC is configured to be connected to a Public Switched Telephone Network (PSTN) and BSCs. BSCs may be connected in pairs with a BS through a backhaul line. The backhaul line may be provided according to at least one of E1/T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, and xDSL. Accordingly, a plurality of BSCs may be included in a CDMA wireless communication system.

Each of the plurality of BSs may include at least one sector, and each sector may include an omni-directional antenna or an antenna pointing in a specific radial direction from the BS. In addition, each sector may include two or more antennas of various types. Each BS may be configured to support multiple frequency assignments, and each of the multiple frequency assignments may have a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of sector and frequency allocation may be referred to as a CDMA channel. BSs may be referred to as Base Station Transceiver Subsystems (BTSs). In this case, one BSC and at least one BS may be collectively referred to as a “base station”. A base station may also refer to a “cell site”. Alternatively, each of a plurality of sectors for a specific BS may be referred to as a plurality of cell sites.

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

In addition, a global positioning system (GPS) for confirming the location of the mobile terminal 100 may be linked to the CDMA wireless communication system. The satellite helps to locate the mobile terminal 100 . Useful location information may be obtained by two or fewer or more satellites. Here, the location of the mobile terminal 100 may be tracked using not only the GPS tracking technology but also all techniques capable of tracking the location. In addition, at least one of the GPS satellites may optionally or additionally be responsible for satellite DMB transmission.

The location information module 115 provided in the mobile terminal is for detecting, calculating, or identifying the location of the mobile terminal, and representative examples thereof may include a Global Position System (GPS) module and a Wireless Fidelity (WiFi) module. If necessary, the location information module 115 may perform any function of the other modules of the wireless communication unit 110 to obtain data on the location of the mobile terminal as a substitute or additionally.

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. Currently, a method of calculating position and time information using three satellites and correcting errors in the calculated position and time information using another one satellite is widely used. In addition, the GPS module 115 may calculate the speed information by continuously calculating the current location in real time. However, it is difficult to accurately measure the position of the mobile terminal using the GPS module in the shaded area of the satellite signal, such as indoors. Accordingly, in order to compensate for positioning by the GPS method, a WiFi Positioning System (WPS) may be utilized.

A WiFi positioning system (WPS) uses a WiFi module provided in the mobile terminal 100 and a wireless AP (Wireless Access Point) that transmits or receives a wireless signal with the WiFi module, the mobile terminal 100 As a technology for tracking the location of a wireless network, it refers to a wireless local area network (WLAN)-based positioning technology using WiFi.

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

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

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

Based on the location information request message of the mobile terminal 100, the extracted wireless AP information is MAC Address, Service Set IDentification (SSID), Received Signal Strength Indicator (RSSI), Reference Signal Received Power (RSRP), RSRQ ( Reference Signal Received Quality), channel information, Privacy, Network Type, signal strength, and noise strength may be at least one.

As described above, the Wi-Fi positioning server may receive information of a wireless AP connected to the mobile terminal 100 and extract wireless AP information corresponding to a wireless AP to which the mobile terminal is connected from a pre-established database. At this time, the information of arbitrary wireless APs stored in the database includes MAC Address, SSID, channel information, Privacy, Network Type, latitude and longitude coordinates of the wireless AP, the name of the building where the wireless AP is located, the number of floors, and detailed indoor location information (GPS coordinates). available), the AP owner's address, phone number, and the like. In this case, in order to remove a mobile AP or a wireless AP provided using an illegal MAC address in the positioning process, the Wi-Fi positioning server may extract only a predetermined number of wireless AP information in order of increasing RSSI.

Thereafter, the Wi-Fi positioning server may extract (or analyze) the location information of the mobile terminal 100 by using at least one wireless AP information extracted from the database. By comparing the included information and the received wireless AP information, the location information of the mobile terminal 100 is extracted (or analyzed).

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

The Cell-ID method is a method of determining the location of a wireless AP having the strongest signal strength among surrounding wireless AP information collected by the mobile terminal as the location of the mobile terminal. It has the advantages of being simple to implement, not requiring additional cost, and being able to quickly obtain location information, but has a disadvantage in that the positioning accuracy is lowered when the installation density of the wireless AP is low.

The fingerprint method is a method of collecting signal strength information by selecting a reference position in a service area, and estimating the position through signal strength information transmitted from a mobile terminal based on the collected information. In order to use the fingerprint method, it is necessary to make a database of propagation characteristics in advance.

The triangulation method is a method of calculating the position of a mobile terminal based on the coordinates of at least three wireless APs and the distance between the mobile terminal. In order to measure the distance between the mobile terminal and the wireless AP, the signal strength is converted into distance information, the time at which a wireless signal is transmitted (Time of Arrival, ToA), and the time difference of the signal is transmitted (Time Difference of Arrival, TDoA) , the angle at which the signal is transmitted (Angle of Arrival, AoA), etc. may be used.

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

In addition to the enumerated methods, various algorithms may be utilized as a method for extracting (or analyzing) location information of a mobile terminal.

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

The mobile terminal 100 may acquire location information by being connected to at least one wireless AP. In this case, 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, FIG. 2 is a block diagram for explaining a speaker related to the present invention.

The speaker 200 may include a wireless communication unit 210 , an output unit 250 , an interface unit 260 , a memory 270 , a control unit 280 , and a power supply unit 290 . The components shown in FIG. 2 are not essential for implementing the speaker, so the speaker described in this specification may have more or fewer components than those listed above.

More specifically, among the components, the wireless communication unit 210 performs wireless communication between the speaker 200 and the wireless communication system, between the speaker 200 and another speaker 200, or between the speaker 200 and an external server. It may include one or more modules that enable In addition, the wireless communication unit 210 may include one or more modules for connecting the speaker 200 to one or more networks.

The wireless communication unit 210 may include at least one of a wireless Internet module 213 and a short-range communication module 214 .

According to the present invention, the wireless Internet module 213 may download content from an external server. By accessing the URL including the content to be played, the content can be downloaded and cached.

The short-range communication module 214 transmits and receives commands and data between the mobile terminal 100 and the speaker 200 . In addition, content may be transmitted/received between the speaker 200 and another speaker 200 through the short-range communication module 214 .

The output unit 250 is for generating an output related to sight and sound, and includes an audio output unit 252 . A display unit 251 may be further included.

The display unit 251 displays information processed by the speaker 200 . For example, the name of the currently playing content may be displayed.

The sound output unit 252 may output audio data. For example, the sound output unit 252 may decode and output sound source data of the content being reproduced.

Alternatively, multimedia data such as a moving picture may be output through the display unit 251 and the sound output unit 252 .

The interface unit 260 serves as a passage with various types of external devices connected to the speaker 200 . In response to the connection of the external device to the interface unit 260 , the speaker 200 may perform appropriate control related to the connected external device.

In addition, the memory 270 stores data supporting various functions of the speaker 200 . The memory 270 may store sound source data of content to be reproduced. The sound source data may be received from an external server through the wireless Internet module 213 or from another speaker 200 through the short-distance communication module 214 .

The controller 280 may control to reproduce the content stored in the memory 270 . Furthermore, the controller 280 may operate by combining at least two or more of the components included in the speaker 200 with each other. Specifically, the controller 280 may control the wireless communication unit 210 and the output unit 250 .

The controller 280 receives a command for downloading the content included in the content playlist from the mobile terminal 100, receives a signal requesting whether the content is being downloaded, and sends a response signal corresponding to the request signal. It is possible to transmit to the mobile terminal 100 , receive a command for transmitting the downloaded content to other speakers, and transmit the downloaded content to other speakers.

Alternatively, the controller 280 may receive content from other speakers 200 .

The controller 280 may reproduce the downloaded content or the content received from the other speaker 200 .

The power supply unit 290 receives external power and internal power under the control of the control unit 280 to supply power to each component included in the speaker 200 .

Next, an operating method of a mobile terminal according to an embodiment of the present invention will be described with reference to FIGS. 3 to 6 .

3 is a flowchart illustrating a method for a mobile terminal to control a plurality of speakers according to an embodiment of the present invention.

The user input unit 123 receives an input for displaying a content playlist (S101).

The controller 180 may receive an input for displaying a content playlist through the user input unit 123 . Alternatively, the controller 180 may receive an input for generating a content playlist through the user input unit 123 and display the generated content playlist on the display unit 151 .

The user may create a content playlist by selecting and inputting contents to be reproduced. Alternatively, the user may input for displaying the generated content playlist on the display unit 151 .

The content playlist may be a pre-stored list or a list newly created by a user selecting each content, but this is only an example.

An example of the content play list may be a list as shown in FIG. 4 .

4 is a diagram for explaining an example of a content play list.

The content play list may include at least one of a content name 301 and an icon 302 for indicating the content being played. Here, the content may be a music file, but is not limited thereto, and may mean multimedia content such as a moving picture.

The controller 280 may control the plurality of speakers by receiving an input for the displayed content playlist by displaying the content playlist.

Fig. 3 will be described again.

The short-range communication module 114 transmits a command for downloading the content included in the content playlist to a speaker that is not downloading the content among the plurality of speakers (S103).

The controller 180 may control the short-range communication module 114 to transmit a command to download the content included in the content playlist to a speaker that is not downloading any content among a plurality of speakers.

When there are a plurality of speakers that do not download content, the controller 180 may transmit a content download command according to a preset priority.

For example, the controller 180 may preferentially transmit a content download command to a speaker located closest among a plurality of speakers that do not download the content. Alternatively, the controller 180 may transmit a content download command to a speaker having the best performance among a plurality of speakers that do not download the content. The speaker with the best performance may mean a speaker with the fastest CPU processing speed, but this is exemplary and may mean a speaker with the largest memory 270 . Alternatively, the controller 180 may transmit a content download command to a speaker most frequently used among a plurality of speakers that do not download content.

Conventionally, the short-range communication module 114 transmits a command for downloading content only to the master speaker among a plurality of speakers. Therefore, high CPU throughput and large memory were required for the master speaker, as the master speaker alone had to download all the content.

According to an embodiment of the present invention, the short-range communication module 114 distributes and transmits a content download command to a plurality of speakers. Accordingly, since each speaker distributes the content download, the CPU throughput required for each speaker is small, and a large memory is not required.

The short-range communication module 114 transmits a content download command to, among the plurality of speakers, in particular a speaker that is not currently downloading any content.

Next, an operation in which the mobile terminal 100 transmits a content download command to a plurality of speakers will be described with reference to FIG. 5 as an example.

For example, it is assumed that there are a first speaker 401 , a second speaker 402 , and a third speaker 403 , but this is merely exemplary.

The controller 180 may search for an operation currently being processed by a plurality of speakers. Through such a search, it is possible to search for a speaker whose content is not currently being downloaded among a plurality of speakers.

Also, through a search, the controller 180 may recognize that the first speaker 401, the second speaker 402, and the third speaker 403 are playing SONG #3 as shown in FIG. 5 .

In addition, the control unit 180 through the search, the first speaker 401 is downloading SONG #3, the third speaker 403 is downloading SONG #4, but the second speaker 402 is downloading the current content, It can be recognized that there is no

Accordingly, the controller 180 may transmit a command to download any one of the content included in the content playlist to the second speaker 402 .

The controller 180 may transmit a command to download any content included in the content playlist. For example, the controller 180 may transmit a command to download SONG #5 to the second speaker 402 .

Alternatively, the controller 180 may transmit a command to preferentially download the previously played content or the next content to be played based on the content play list based on the content play list. For example, the controller 180 may transmit a command to download SONG #2 to the second speaker 402 .

Alternatively, the controller 180 may transmit a command to preferentially download the content that has been reproduced the most based on the content playlist.

The controller 280 of each speaker 401 , 402 or 403 may receive a command for downloading content. Upon receiving the content download command, the controller 280 of the speaker 401 , 402 or 403 may download content corresponding to the received command.

The controller 280 of each speaker 401 , 402 or 403 may control the wireless Internet module 213 to download content from an external server.

The controller 180 of the mobile terminal 100 transmits a command to download another content included in the content playlist to the corresponding speaker as any one of the plurality of speakers completes the downloading of the content being downloaded. can

For example, when detecting that the first speaker 401 has completed downloading SONG #3 that is being downloaded, the controller 180 gives a command to download SONG #6 that is any one content included in the content playlist. may be transmitted to the first speaker 401 .

In this way, the controller 180 may transmit a command for downloading content, which controls the plurality of speakers 401 , 402 , and 403 to download the content without stopping, to each speaker.

In addition, when the mobile terminal 100 detects that at least one speaker among the plurality of speakers stops downloading the in-progress content due to a communication reason, etc., the mobile terminal 100 transmits a command to continue downloading the content from the time point at which it was stopped to another speaker. can

Alternatively, the controller 180 may transmit a command to download all of the corresponding content to the speaker that has transmitted the corresponding content deletion command and the download command to the speaker that has stopped downloading.

If the control unit 280 of the speaker 200 that has received the download command is downloading the content, after the downloading of the downloaded content is completed, the control unit 280 starts downloading the corresponding content, and the speaker receiving the download command is downloading the content. If not, the download of the corresponding content can be started immediately.

The controller 280 may receive a content download command and download content corresponding to the received command.

The speaker 200 may cache the downloaded content.

Caching is a method of transmitting data by storing content requested by users on a separate server. Since there is no need to store it in the memory 270 , it does not occupy much space in the memory 280 . In addition, since the data is transmitted through a separate server, it is possible to transmit data faster than when the data is retrieved from the memory 280 .

Fig. 3 will be described again.

The controller 180 transmits a request signal for searching for a speaker from which the content to be reproduced is downloaded to the plurality of speakers (S105).

The controller 180 may transmit a request signal to the speaker 200 to search for a speaker from which content corresponding to the command has been downloaded according to the download command.

The controller 180 controls the wireless communication unit 110 to transmit a request signal for searching for a speaker from which a content to be reproduced is downloaded to a plurality of speakers.

Specifically, the controller 180 may transmit a request signal for searching for a speaker from which the content to be reproduced is downloaded to the plurality of speakers in order to reproduce the content to be reproduced next together with the completion of the reproduction of the previous content.

The plurality of speakers 200 may receive a request signal.

The controller 280 acquires whether the content corresponding to the request signal has been downloaded.

According to an embodiment of the present invention, when the content corresponding to the request signal is downloaded, the control unit 280 transmits a response signal corresponding thereto to the mobile terminal 100 , and when the content is not downloaded, the controller 280 to the mobile terminal 100 A response signal may not be transmitted.

According to another embodiment of the present invention, the result of obtaining whether to download the content may be transmitted to the mobile terminal 100 .

The controller 180 receives a response signal corresponding to the request signal (S107).

The controller 180 controls the wireless communication unit 110 to receive a response signal corresponding to the transmission of a request signal for searching for a speaker from which content to be reproduced has been downloaded.

In addition, the mobile terminal 100 may receive a response signal indicating that the speaker is not caching the corresponding content in addition to the response signal that the speaker is caching the corresponding content.

Next, the controller 180 transmits a command for transmitting the downloaded content to other speakers to the speaker that has transmitted the response signal (S109).

Upon receiving the response signal, the controller 180 may control the wireless communication unit 110 to transmit a command to transmit the downloaded content to other speakers to the speaker that has transmitted the response signal.

The controller 280 of the speaker 200 may receive a command for transmitting the corresponding content to other speakers.

A specific example will be described with reference to FIG. 6 .

As the playback of SONG #3 is completed, the controller 180 may want to playback SONG #4.

First, the controller 180 may transmit (510) a request signal for searching for a speaker for downloading and caching SONG #4 to the plurality of speakers 501, 502, and 503.

The plurality of speakers 501, 502 and 503 may receive a request signal to find a speaker that is downloading and caching SONG #4.

In response to the request signal, the control unit 280 of the third speaker 503 may transmit a response signal indicating that SONG #4 is being downloaded and cached to the mobile terminal 100 .

In response to the transmitted signal, the controller 180 of the mobile terminal 100 may receive 520 a response signal indicating that the third speaker 503 is downloading and caching SONG #4.

Next, the controller 180 may transmit a command for transmitting SONG #4 to other speakers to the third speaker 503 ( 530 ).

The third speaker 503 may transmit 540 SONG #4 to the first speaker 501 and the second speaker 502 upon receiving 530 a command to transmit SONG #4 to other speakers. there is.

The first speaker 501 and the second speaker 502 may receive SONG #4 from the third speaker 503 .

In order to transmit and receive content as described above, a configuration in which the controller 180 transmits a command to change the mode of the plurality of speakers may be premised.

For example, in the above case, the controller 180 sends a command for controlling the third speaker 503 to the Sender Mode and the first speaker 501 and the second speaker 502 to the Receiver Mode to the respective speakers. can be transmitted Upon receiving the command, the third speaker 503 may switch from the receiver mode to the sender mode, and the first speaker 501 and the second speaker 502 may switch from the sender mode to the receiver mode.

Fig. 3 will be described again.

The controller 180 transmits a command to play the downloaded content or content received from another speaker to the plurality of speakers (S111).

The controller 180 controls the wireless communication unit 110 to transmit a command to play the downloaded content or content received from another speaker to the plurality of speakers.

Specifically, referring back to FIG. 6 , the third speaker 503 has downloaded SONG #4, and the first speaker 501 and the second speaker 502 have received SONG #4 from the speaker 3 (503).

When the controller 180 of the plurality of speakers 501, 502 and 503 receives a content playback command from the mobile terminal 100, the third speaker 503 plays the downloaded SONG #4, and the first speaker 501 and the second speaker 502 may reproduce content using the SONG #4 received from the third speaker 503 .

Next, a content download and content transmission/reception method will be described.

The controller 180 may control the plurality of speakers to perform content download and content transmission/reception in the form of PCM data.

PCM data refers to sound wave data stored in the PCM method, which means pulse code modulation. In the case of PCM data transmission, discrete values are assigned to the signal amplitude at a time point of a certain period determined by each signal frequency component to the audio signal, and then converted into a pulse code sequence and transmitted, and the receiving end The code is read and restored to the original signal. Through this, an analog signal can be digitized and transmitted. Even if external noise is mixed with a digital signal, it is difficult to reproduce the signal again within the range that does not affect the determination of the presence or absence of the signal, and it is strong against various noises.

Although the present invention has been described by taking the case of group play of the multi-room speaker as an example, it is obvious that the present invention can also be applied to the case of performing each play of the multi-room speaker.

Specifically, even when a plurality of speakers are playing different content, the mobile terminal 100 may transmit a request signal to find a speaker that is being downloaded and cached with respect to the content to be reproduced by each speaker to the plurality of speakers. When a response signal indicating that the corresponding content is being downloaded and cached is received from one of the speakers that transmitted the request signal, a command to transmit the corresponding content to another speaker may be transmitted to the speaker that transmitted the response signal.

The present invention described above can be implemented as computer-readable codes on a medium in which a program is recorded. The computer-readable medium includes all types of recording devices in which data readable by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is also a carrier wave (eg, transmission through the Internet) includes implementation in the form of. In addition, the computer may include the control unit 180 of the terminal. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (8)

In a mobile terminal,
a user input unit for receiving an input for displaying a content play list;
a short-range communication module for performing communication with a plurality of speakers; and
A control unit for controlling the user input unit and the short-range communication module,
the control unit
Transmitting a first command for downloading the content included in the content playlist to a speaker that is not downloading any content among a plurality of speakers,
Transmitting a request signal to find a speaker from which the content has been downloaded according to the first command to the plurality of speakers,
receiving a response signal corresponding to the request signal;
A mobile terminal for transmitting a second command for transmitting the downloaded content to other speakers to the speaker that has transmitted the response signal. According to claim 1,
the control unit
A mobile terminal for transmitting a third command for playing the downloaded content or content received from another speaker to the plurality of speakers. The method of claim 1,
The first command is
and a command for preferentially downloading previously played content or content to be played next, based on the content play list. The method of claim 1,
The first command is
and a command for preferentially downloading the content having the greatest number of plays based on the content play list. A method for controlling a speaker in a mobile terminal, the method comprising:
receiving an input for displaying a content playlist;
transmitting a first command for downloading content included in the content playlist to a speaker that is not downloading any content among a plurality of speakers;
transmitting a request signal to search for a speaker from which the content has been downloaded to the plurality of speakers according to the first command;
receiving a response signal corresponding to the request signal; and
and transmitting a second command for transmitting the downloaded content to other speakers to a speaker that has transmitted the response signal. 6. The method of claim 5,
and transmitting a third command for playing the downloaded content or content received from another speaker to the plurality of speakers. 6. The method of claim 5,
The first command is
and a command for preferentially downloading content to be played next or previously played content of the content currently being played based on the content play list. 6. The method of claim 5,
The first command is
and a command for preferentially downloading the content having the greatest number of plays based on the content play list.

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