KR20110035565A - Audio output device capable of conncting a mobile terminal using short-range communication and operation control method thereof - Google Patents

Abstract

PURPOSE: An operation control method of a connectable audio output device by using a local communication with a portable terminal are provided to block transmitting a reproducing command to the portable terminal, redialing command or volume control command during predetermined time through a connection through the local communication with the portable terminal. CONSTITUTION: An audio control unit determines AVRCP(Audio Video Remote Control Profile) connection state about a portable terminal if a replay key is inputted(S300,S305). If it is not a AVRCP connection state, the audio control unit controls an AVRCP connection with the portable terminal(S310). If it is a A2DP(Advanced Audio Distribution Profile) connection state about the portable terminal, the audio control unit processes a AVRCP replay command(S315,S320). If it is the A2DP connection state, the audio control unit controls the A2DP connection with the portable terminal(S325).

Description

Audio output device capable of conncting a mobile terminal using short-range communication and operation control method

The present invention relates to an audio output device and a method for controlling the operation thereof, and more particularly, to an audio output device and an operation control method for preventing malfunction when connected to the portable terminal using a short-range communication.

Headsets and earphones are a type of audio output device that is mounted in close contact with a person's ear and delivers sound directly to the person's ear by outputting an audio signal. There are various forms of such audio output devices. Recently, with the development of various wireless headsets using near field communication technologies such as Bluetooth, users are demanding more comfortable structures and methods.

The audio output device may be connected to the portable terminal through short-range communication such as Bluetooth to output an audio signal. In this case, the portable terminal refers to a portable device that is portable and has at least one function of performing a voice and video call, a function of inputting / outputting information, and a function of storing data.

However, in the case of an audio output device such as a Bluetooth headset, a command remaining when connecting to the portable terminal is transmitted to the portable terminal, and noise or other unintended operation may occur. In addition, even if such noise or an unintended operation does not occur, an automatic system recovery (ASR) menu or the like is executed, and a cancel operation or the like must be additionally performed to escape the noise.

Accordingly, an object of the present invention is to provide an audio device and an operation control method for preventing an occurrence of an unintentional operation by a user by blocking transmission of an incorrect command when connecting to a portable terminal through short-range communication.

In order to achieve the above object, an operation control method of an audio output device connected to a portable terminal according to the present invention through short-range communication may include: a first key signal for controlling a first profile for music listening and controlling a reproduction operation; The method may include connecting to the portable terminal according to the first profile, and blocking a command corresponding to the first key signal from being transmitted to the portable terminal for a predetermined time.

On the other hand, the audio output device according to the present invention, the communication unit for connecting the portable terminal via short-range communication, the control and playback operation of the first profile for listening to music when the first key, and the input of the first key, And an audio control unit for connecting the communication unit with the portable terminal according to the first profile, and for preventing a command corresponding to the first key signal from being transmitted to the portable terminal for a predetermined time.

According to the present invention, a portable terminal for playing a music file and a portable terminal connected to the portable terminal through short-range communication may control a first profile for listening to music and a first key signal for controlling playback of the music file. When input, the system is provided with an audio output device connected to the portable terminal according to the first profile and for preventing a command corresponding to the first key signal from being transmitted to the portable terminal for a predetermined time.

According to the present invention, when the mobile terminal is connected through short-range communication, the reproduction command, the redial command, the volume control command, and the like are blocked from being transmitted to the mobile terminal for a predetermined time, thereby generating noise or silence. It is possible to prevent the operation that other users do not intend to occur.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a block diagram of a portable terminal connectable through short-range communication to an audio output device according to the present invention. The portable terminal described in the present specification includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), navigation, and the like. In addition, the suffixes "module" and "unit" for the components used in the following description are merely given in consideration of ease of preparation of the present specification, and do not give particular meanings or roles by themselves. Therefore, the "module" and "unit" may be used interchangeably.

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

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 113, a wireless Internet module 115, a short distance communication module 117, and a GPS module 119.

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

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal. The broadcast related information may also be provided through a mobile communication network, and in this case, may be received by the mobile communication module 113. Broadcast related information may exist in various forms.

The broadcast receiving module 111 may receive a broadcast signal using various broadcast systems, and may receive a digital broadcast signal using a digital broadcast system. In addition, the broadcast receiving module 111 may be configured to be suitable for all broadcast systems providing broadcast signals as well as such digital broadcast systems. Broadcast signals or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

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

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

The short-range communication module 117 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and the like can be used as the short distance communication technology.

The GPS (Global Position System) module 119 receives position information from a plurality of GPS satellites.

The A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 123. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151.

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

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

The user input unit 130 generates key input data input by the user for controlling the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (constant voltage / capacitance), etc. that may receive a command or information by a user's push or touch operation. In addition, the user input unit 130 may be configured as a jog wheel or a jog method or a joystick that rotates a key, a finger mouse, or the like. Particularly, when the touch pad has a mutual layer structure with the display unit 151 described later, it can be called a touch screen.

The sensing unit 140 senses the current state of the portable terminal 100 such as the open / close state of the portable terminal 100, the position of the portable terminal 100, Thereby generating a sensing signal. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, it may be responsible for sensing functions related to whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to an external device, and the like.

The sensing unit 140 may include a detection sensor 141, a pressure sensor 143, a motion sensor 145, and the like. The detection sensor 141 detects the presence of an object approaching the portable terminal 100 or an object existing in the vicinity of the portable terminal 100 without mechanical contact. The detection sensor 141 may detect a proximity object by using a change in an alternating magnetic field or a change in a static magnetic field, or using a change rate of capacitance. The sensor 141 may be provided with two or more according to the configuration aspect.

The pressure sensor 143 may detect whether pressure is applied to the portable terminal 100, the magnitude of the pressure, and the like. The pressure sensor 143 may be installed at a portion where the pressure of the portable terminal 100 is required depending on the use environment. If the pressure sensor 143 is installed in the display unit 151, a touch input through the display unit 151 and a greater pressure than the touch input are applied according to a signal output from the pressure sensor 143. Pressure touch input can be identified. Also, the magnitude of the pressure applied to the display unit 151 at the time of the pressure touch input can be determined according to the signal output from the pressure sensor 143. [

The motion sensor 145 detects the position and movement of the portable terminal 100 using an acceleration sensor, a gyro sensor, or the like. An acceleration sensor that can be used for the motion sensor 145 is a device that converts an acceleration change in one direction into an electric signal and is widely used along with the development of MEMS (micro-electromechanical systems) technology. The acceleration sensor measures the acceleration of a small value built in the airbag system of an automobile and recognizes the minute motion of the human hand and measures the acceleration of a large value used as an input means such as a game There are various types. Acceleration sensors are usually constructed by mounting two or three axes in one package. Depending on the usage environment, only one axis of Z axis is required. Therefore, when the acceleration sensor in the X-axis direction or the Y-axis direction is used instead of the Z-axis direction for some reason, the acceleration sensor may be mounted on the main substrate by using a separate piece substrate.

The gyro sensor is a sensor for measuring the angular velocity, and it can sense the direction of rotation with respect to the reference direction.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, an audio output module 153, an alarm unit 155, and a haptic module 157.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal 100 is in a call mode, the mobile terminal 100 displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the portable terminal 100 is in the video communication mode or the photographing mode, the photographed or received images can be displayed individually or simultaneously, and the UI and the GUI are displayed.

Meanwhile, as described above, when the display unit 151 and the touch pad form a mutual layer structure and constitute a touch screen, the display unit 151 is an input device capable of inputting information by a user's touch in addition to the output device. May also be used.

If the display unit 151 is configured as a touch screen, it may include a touch screen panel, a touch screen panel controller, and the like. In this case, the touch screen panel is a transparent panel attached to the outside and may be connected to the internal bus of the portable terminal 100. The touch screen panel keeps a watch on the contact result, and if there is a touch input, sends the corresponding signals to the touch screen panel controller. The touch screen panel controller processes the signals, and then transmits corresponding data to the controller 180 so that the controller 180 can determine whether the touch input has been made and which area of the touch screen has been touched.

The display unit 151 may be formed of an e-paper. Electronic paper (e-Paper) is a kind of reflective display, and has excellent visual characteristics such as high resolution, wide viewing angle and bright white background as conventional paper and ink. The electronic paper (e-paper) can be implemented on any substrate such as plastic, metal, paper, and the image is retained even after the power is shut off, and the battery life of the portable terminal 100 is long Can be maintained. As the electronic paper, hemispherical twist balls filled with electrostatics may be used, or electrophoresis and microcapsules may be used.

In addition, the display unit 151 may include a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. It may include at least one of (3D display). In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. For example, the external display unit (not shown) and the internal display unit (not shown) may be simultaneously provided in the portable terminal 100.

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

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

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

In addition to the vibration, the haptic module 157 may be provided with a function of stimulating by a pin arrangement vertically moving with respect to the contact skin surface, an effect of stimulating air through the injection or suction force of the air through the injection port or the suction port, The effect of stimulation through contact of an electrode (eletrode), the effect of stimulation by electrostatic force, and the effect of reproducing a cold sensation using a device capable of endothermic or exothermic can be generated. The haptic module 157 can be implemented not only to transmit the tactile effect through direct contact but also to feel the tactile effect through the muscular sense of the user's finger or arm. Two or more haptic modules 157 may be provided according to a configuration aspect of the mobile terminal 100.

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

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM , And a ROM. ≪ / RTI > In addition, the mobile terminal 100 may operate a web storage that performs a storage function of the memory 150 on the Internet.

The interface unit 170 serves as an interface with all external devices connected to the portable terminal 100. Examples of the external device connected to the portable terminal 100 include a wired / wireless headset, an external charger, a wired / wireless data port, a memory card, a SIM (Subscriber Identification Module) card, a UIM An audio input / output (I / O) terminal, a video I / O (input / output) terminal, and an earphone. The interface unit 170 receives data from the external device or receives power from the external device and transmits the data to each component in the portable terminal 100 so that data in the portable terminal 100 can be transmitted to the external device .

The interface unit 170 is a path through which power from the cradle connected when the portable terminal 100 is connected to the external cradle is supplied to the portable terminal 100 or various command signals inputted from the cradle by the user are carried And may be a passage to be transmitted to the terminal 100.

The controller 180 typically controls the operation of each unit to control the overall operation of the mobile terminal 100. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia playback module 181 for multimedia playback. The multimedia playback module 181 may be configured in hardware in the controller 180 or may be configured in software separately from the controller 180.

The 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 mobile terminal 100 having such a configuration can be configured to be operable in a communication system capable of transmitting data through a frame or a packet, including a wired / wireless communication system and a satellite-based communication system. have.

2 is a view showing an audio output device according to an embodiment of the present invention. Referring to FIG. 2, the audio output apparatus 200 is connected to the first sound output unit 203 and the second sound output unit 205 provided on the left and right sides by a frame 207 to be mounted on a user's head. It is configured to be.

The audio output device 200 having such a configuration may be connected to the mobile terminal 100 through short-range communication such as Bluetooth. The audio output device 200 may directly transmit sound to the user's ear by outputting a sound signal corresponding to the AV data received from the mobile terminal 100.

One of the first and second sound output units 203 and 205 may be provided with a first key (not shown). At this time, when the first key is pressed shortly, playback starts and when long presses the playback, the playback is stopped or vice versa.

In addition, one of the first and second sound output units 203 and 205 may be provided with a second key (not shown). A short press of the second key performs a redial and a long press of the second key adjusts the volume or vice versa.

3 is a block diagram of an audio output device according to an embodiment of the present invention. Referring to FIG. 3, the audio output device 200 may include a communication unit 210, a key input unit 220, a memory unit 230, an audio input / output unit 240, and an audio control unit 250.

The communication unit 210 provides a wireless transmission / reception interface necessary for exchanging voice signals or data with the portable terminal 100 wirelessly. The key input unit 220 includes a key for playing, stopping playback, redialing, adjusting a volume, and the like. The memory unit 230 stores a program or other data for the operation of the audio output device 200. The audio input / output unit 240 amplifies the output sound signal so as to ring through the speaker, or amplifies the voice signal input through the microphone to be transmitted to the mobile terminal 100.

The audio controller 250 is a part for controlling each component of the audio output device 200, and transmits and receives various data with the portable terminal 100 through the communication unit 210, and controls the audio input / output unit 240. Controls the interruption and the gain of the sound signal, and reads or stores data from the memory unit 230.

By such a configuration, the audio output apparatus 200 may output an audio signal corresponding to the AV data transmitted from the portable terminal 100, and transmit the audio signal input through the audio input / output unit 240 to the portable terminal ( 100).

On the other hand, the Bluetooth profile used in the operation control method of the audio output device according to the present invention, HSP (Headset Profile), HFP (Hands Free Profile), A2DP (Advanced Audio Distribution Profile), AVRCP (Audio Video Remote Control) Profile), which can be divided into functions for calling and listening to music. When implementing a Bluetooth application, the profile defines the type of protocol, its structure, and how to use it for each specific application.

HSPs and HFPs support answering, hanging up, and redialing as profiles for phone calls. Here, HSP is the most commonly used profile provided for voice and monaural music, and is mainly used in Bluetooth mono headsets. HFP is a more advanced version of the HSP profile, which supports voice dialing, redialing, call forwarding, and answer / end calls.

Support for the HSP and HFP profiles enables hands-free features such as answering, hanging up, and redialing, while delivering normal mono sound quality. Mono Bluetooth headsets usually only support these two profiles.

A2DP and AVRCP deliver stereo sound quality and support functions such as play and stop and volume control. Here, A2DP is a profile that supports stereo music. This profile is designed to transmit a stereo audio stream such as music from an MP3 player to a headset or car radio.

AVRCP is a profile that supports remote control. This profile is designed to provide a standard interface for controlling TVs and Hi-Fi devices, allowing a single remote control and allowing users to control all accessing A / V devices.

Stereo Bluetooth headsets support A2CP and AVRCP profiles for wireless control of music playback, stop, next track, previous track and volume control.

In addition, in an audio output device such as a Bluetooth stereo headset, a key for controlling an A2DP / AVRCP profile is usually provided, and a key for controlling an HSP / HFP profile is provided. In general, A2DP / AVRCP is assigned to a playback key, while HSP / HFP is assigned to a volume key or a redial key.

When the audio output device 200 is connected to the mobile terminal 100, the user obtains a list of profiles supported by the audio output device 200, but connects all the audio output devices 200 to the mobile terminal 100 from the audio output device 200. Automatic connection method and manual connection method are used. The automatic connection method is a method in which the audio output device 200 is connected to the mobile terminal 100 previously connected while being powered on. On the other hand, the manual connection method is a method of connecting to the mobile terminal 100 previously connected by pressing a specific key in the audio output device 200.

4 to 7 are flowcharts provided to explain an operation control method of an audio output device according to an exemplary embodiment of the present invention. An operation control method of an audio output device according to an embodiment of the present invention may be applied to a case in which the audio output device 200 is connected to the portable terminal 100 by a manual connection method.

4 is a flowchart illustrating an operation process when a play key is input in an operation control method of an audio output device according to an embodiment of the present invention.

Referring to FIG. 4, when a play key is input (S300), the audio controller 250 determines whether the portable terminal 100 is connected to the AVRCP described above (S305). If it is determined that the mobile terminal 100 is not connected to the AVRCP, the audio controller 250 controls the mobile terminal 100 to be connected to the AVRCP (S310).

Next, the audio controller 250 determines whether the portable terminal 100 is connected to the A2DP and, if connected to the A2DP, allows the AVRCP playback command to be processed according to a normal process (S315 and S320). Accordingly, the playback command is transmitted to the mobile terminal 100, and the audio signal is output from the audio output device 200.

However, as a result of the determination in step S315, if it is not connected to the A2DP, the audio controller 250 is connected to the mobile terminal 100 to A2DP (S325), sets a timer, and cancels the AVRCP playback command (S330). , S335). Then, it waits until the set timer ends (S340). Accordingly, transmission of the playback command to the mobile terminal 100 is blocked for a predetermined time set in the timer. That is, in the case of the playback, if the playback operation is performed immediately in the state connected to A2DP, the playback operation is performed in the state in which the sound path is not changed in the mobile terminal 100, and there is noise or abnormal operation. To prevent this.

By this process, when attempting to connect with the mobile terminal, it is possible to prevent abnormal operation by blocking the transmission of the play command for a predetermined time.

5 is a flowchart illustrating an operation process when a redial key is input in an operation control method of an audio output device according to an embodiment of the present invention.

Referring to FIG. 5, when a redial key is input (S350), the audio controller 250 determines whether the portable terminal 100 is connected to the aforementioned HFP or HSP (S355). As a result of the determination, when connected to the HFP or HSP, the audio controller 250 causes the redial command to be processed according to a normal process (S360). Accordingly, the redial command is transmitted to the mobile terminal 100, and the redial operation is performed to the previous telephone number.

However, if the state is not connected to the HFP or HSP, the audio control unit 250 is connected to the mobile terminal 100 to the HFP or HSP (S365), set a timer, and the redial command is canceled (S370, S375). ). Then, it waits until the set timer ends (S380). Accordingly, the redial command is blocked from being transmitted to the mobile terminal 100 for a predetermined time set in the timer.

By such a process, the redial command remaining in the connection process may be transmitted to the mobile terminal 100 to prevent the user from making a call.

6 is a flowchart illustrating an operation process when a volume key is input in an operating method of an audio output device according to an embodiment of the present invention.

Referring to FIG. 6, when a great key is input (S400), the audio controller 250 determines whether the portable terminal 100 is connected to the above-described HFP or HSP (S405). As a result of the determination, when connected to the HFP or the HSP, the audio controller 250 causes the volume control command to be processed according to a normal process (S410). Accordingly, the volume control command is transmitted to the mobile terminal 100, the volume is adjusted.

However, if the state is not connected to the HFP or HSP, the audio control unit 250 is connected to the mobile terminal 100 to the HFP or HSP (S415), set a timer, and cancel the volume control command (S420, S425). ). Then, it waits until the set timer ends (S430). Accordingly, the volume control command is blocked from being transmitted to the mobile terminal 100 for a predetermined time set in the timer.

By this process, the volume control is performed immediately in the state connected to the HFP or HSP, so that the sound path may not be changed in the mobile terminal 100, thereby preventing the silence.

7 is a diagram illustrating a state in which an audio output device and a portable terminal are connected. As shown in FIG. 7, the audio output device 200 is connected to the mobile terminal 100 through short-range communication and shows a state of playing a music file through an A2DP stream.

When the audio output device 200 is connected to the mobile terminal 100 and blocks the transmission of a command for a predetermined time, the audio output device 200 may be configured to display a message related to the mobile terminal 100. In addition, when the portable terminal 100 requests a connection from the audio output apparatus 200, the portable terminal 100 may be configured to ignore playback or redial command for a predetermined time.

Meanwhile, the present invention can be embodied as processor readable codes on a processor readable recording medium. The processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet. . The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.

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

1 is a block diagram of a portable terminal connectable to an audio output device according to an embodiment of the present invention;

2 is a view showing an audio output device according to an embodiment of the present invention;

3 is a block diagram of an audio output device according to an embodiment of the present invention;

4 is a flowchart illustrating an operation process when a play key is input in an operating method of an audio output device according to an embodiment of the present invention;

5 is a flowchart illustrating an operation process when a redial key is input in an operating method of an audio output device according to an embodiment of the present invention;

6 is a flowchart illustrating an operation process when a volume key is input in an operating method of an audio output device according to an embodiment of the present invention;

7 is a view showing a state in which the audio output device and the portable terminal according to an embodiment of the present invention is connected.

Explanation of symbols on the main parts of the drawings

100: mobile terminal 200: audio output device

Claims (13)

In the control method of the operation of the audio output device connected to the portable terminal through the short-range communication, Controlling a first profile for listening to music and receiving a first key signal for controlling a reproduction operation; Connecting with the mobile terminal according to the first profile; And And blocking a command corresponding to the first key signal from being transmitted to the portable terminal for a predetermined time. The method of claim 1, And transmitting a command corresponding to the first key signal to the portable terminal when connected to the portable terminal according to the first profile. The method of claim 1, And the first profile comprises an A2DP and an AVRCP profile. The method of claim 1, When the second key signal for controlling the second profile for voice call and the operation of any one of redial and volume control is input, the second key signal is connected to the mobile terminal according to the second profile, and the second key signal is transmitted for a predetermined time. And blocking a command corresponding to a key signal from being transmitted to the portable terminal. The method of claim 4, wherein And transmitting a command corresponding to the second key signal to the portable terminal when connected to the portable terminal according to the second profile. The method of claim 4, wherein And the second profile comprises an HSP and an HFP profile. The method of claim 1, And outputting a sound signal corresponding to the A / V stream received from the portable terminal. A communication unit connecting with the mobile terminal through short-range communication; A first key to receive a control of a first profile for listening to music and a key signal for controlling a reproduction operation; And An audio control unit connected to the mobile terminal through the communication unit according to the first profile when the first key is input, and preventing a command corresponding to the input of the first key from being transmitted to the mobile terminal for a predetermined time; Audio output device comprising a. The method of claim 8, The controller outputs a command corresponding to the input of the first key to the portable terminal when connected to the portable terminal according to the first profile. The method of claim 8, And the first profile comprises an A2DP and an AVRCP profile. The method of claim 8, And a second key to which a key signal for the operation of any one of redialing and volume adjustment is input, and a second profile for voice call. The controller, when the second key is input, connects the communication unit with the portable terminal according to the second profile, and blocks a command corresponding to the input of the second key from being transmitted to the portable terminal for a predetermined time. Audio output device, characterized in that. The method of claim 11, And the second profile comprises an HSP and an HFP profile. A mobile terminal for playing music files; And When a first key signal for controlling a first profile for listening to music and for controlling playback of the music file is input, the portable terminal is connected to the portable terminal through short-range communication, and is connected to the portable terminal according to the first profile. And an audio output device that blocks a command corresponding to the first key signal from being transmitted to the portable terminal for a predetermined time.

Images