KR20110040500A - Mobile terminal capable of conncting an audio device using short-range communication and operation control method thereof - Google Patents

Abstract

PURPOSE: A mobile terminal capable of connecting an audio device using a short-range communication is provided to perform a transmission hold of a audio stream, displaying a holding state, and process hold for an input of a user. CONSTITUTION: A control unit is connected to an audio output device and an A2DP(Advanced Audio Distribution Profile)(S300). A controller transmits the generated A2DP stream to the audio device(S305). If the AVDTP suspend command is received, the controller stops the A2DP stream(S310,S320). The controller indicates a message about the pause of the replay operation to the display unit(S325). The controller stops the processing of the user input related to the control of the reproduction operation except a reproduction end(S330).

Description

Mobile terminal capable of conncting an audio device using short-range communication and operation control method

The present invention relates to a portable terminal and a method for controlling the operation thereof, and more particularly, to a portable terminal capable of being connected to an audio output device using near field communication and a method for controlling the operation thereof.

A portable terminal is a portable device that is portable and has one or more functions for making voice and video calls, inputting and outputting information, and storing data. As the functions of the portable terminal have diversified, they have complicated functions such as photographing and photographing, playing music files and video files, receiving games, receiving broadcasts, and wireless internet, and have developed a comprehensive multimedia player, .

In addition, the portable terminal may be connected to an audio output device such as a headset or earphone to output a sound signal. Recently, various wireless headsets using short-range communication technologies such as Bluetooth have been developed, and provide various functions such as phonebook, call history inquiry, message search, file transfer, etc. in addition to basic sound output functions.

However, Bluetooth has a limited transmission bandwidth, and even if the EDR (Enhanced data rate) is used, the theoretical limit is only 3 Mbps. The output may be interrupted. Accordingly, the audio output device transmits a command for pausing the playback operation to the portable terminal, stops the playback operation, and then uses another function. When the function is finished, the portable terminal issues a command to resume playback. The way to deliver is used.

In this case, the portable terminal must process the pause command received from the audio output device. In the past, the pause command is regarded as an end, and the playback operation is completely terminated, or the audio stream is generated from the mobile terminal. Is not used.

However, when processing in this manner, the sound signal may not be output in response to a command to start reproduction, or the sound signal may be output but no reconstruction is performed, or the sound signal remaining in the previous buffer may be output. In addition, a command input by a user through a player whose playback operation is stopped may be transmitted to the audio output device, thereby causing an incorrect operation.

Accordingly, an object of the present invention is to provide a portable terminal and an operation control method thereof, which are connected to an audio output device through short-range communication and can prevent the occurrence of an erroneous operation in a process of performing a reproduction operation.

In accordance with an aspect of the present invention, there is provided a method for controlling an operation of a portable terminal, the method comprising: connecting to an audio output device through short-range communication according to a first profile for distributing an audio stream, and transmitting the audio stream to the audio output device. Step, when receiving a command for requesting the pause of the playback operation from the audio output device, stopping the transmission of the audio stream, and displays a message indicating that the playback operation is paused on the display, and playback Causing the processing of the user input related to the control of the reproduction operation except for termination to be stopped.

Meanwhile, the portable terminal according to the present invention may be connected to the audio output device according to a display unit, a wireless communication unit connecting to an audio output device through short range communication, and a first profile for distributing an audio stream through the wireless communication unit. And transmitting an audio stream to the audio output device, and receiving a command for requesting a pause of a playback operation from the audio output device, stopping transmission of the audio stream and stopping the playback operation on the display unit. It includes a control unit for displaying a message indicating that the status.

In addition, according to the present invention, an audio output device for outputting an audio signal corresponding to the audio stream received through the short-range communication connected according to the first profile for distribution of the audio stream, and the audio stream through the short-range communication And upon receipt of a command requesting a pause of a playback operation from the audio output device, stops transmission of the audio stream, displays a message indicating that the playback operation is paused, and excludes playback termination. A system is provided that includes a portable terminal that causes processing of user input associated with control of a playback operation to be suspended.

According to the present invention, when a command for requesting a pause of a playback operation is received in the process of being connected to the audio output device through short-range communication and performing a playback operation, a message indicating importance of transmission of an audio stream and indicating a pause state is received. It is possible to stop the processing of the user input related to the reproduction operation except the reproduction termination. Accordingly, other functions requested by the audio output apparatus during the reproduction operation can be processed without malfunction.

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

FIG. 1 is a block diagram of a portable terminal according to an exemplary embodiment of the present invention. Referring to FIG. 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.

A 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 for rotating 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. The 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 portable terminal 100 is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. 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 e-paper can be implemented on any substrate such as plastic, metal, paper, etc., and the image is maintained even after the power is cut off, and there is no back light power, so the battery life of the mobile terminal 100 is long. Can be maintained. As the electronic paper, a hemispherical twist ball filled with a telephone can be used, or an electrophoresis method and a microcapsule can 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 may output a signal to inform the call signal when the call signal or the 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 the respective units 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 example of an audio output device connected to a portable terminal 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 briefly, 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.

FIG. 3 is a block diagram of the audio output device shown in FIG. 2. 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 audio stream 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 (Profile) used in the operation control method of the mobile terminal according to the present invention, HSP (Headset Profile), HFP (Hands Free Profile), A2DP (Advanced Audio Distribution Profile), AVRCP (Audio Video Remote Control Profile) These profiles 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.

In addition, various profiles such as PBAP (Phone Book Access Profile) that supports downloading the phone book to car kits, OPP (Object Push Profile) / FTP (File Transfer Profile) that support file transfer, etc. exist.

On the other hand, when the audio output device 200 is connected to the mobile terminal 100, the audio output device 200 to obtain a list of profiles that can be supported, all connected, but from the audio output device 200 to the mobile terminal 100 In case of connection, 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.

4A and 4B are flowcharts provided to explain an operation control method of a mobile terminal according to an embodiment of the present invention.

Referring to FIG. 4A, in response to a playback key being pressed on the audio output device 200 or a user input through the portable terminal 100, the controller 180 may communicate with the audio output device 200 through the wireless communication unit 110. It is connected to the above-described A2DP (S300). After the A2DP connection, the controller 180 transmits the A2DP stream generated by performing a playback operation on the file selected for playback to the audio output device 200 (S305).

During transmission of the A2DP stream, if the AVDTP Suspend command is received from the audio output device 200 to request the pause of the playback operation (S310), the controller 180 stops the transmission of the A2DP stream (S310).

The A2DP Suspend command is used to perform Phonebook, Call history, SMS search, etc. When using Phone Book Access Profile (PBAP), Object Push Profile (OPP) / FTP (File Transfer) Profile) can be used to pause the playback operation in the case of sending data such as a file or vCard from the audio output device 200.

After the transmission of the A2DP stream is stopped, the controller 180 displays a message indicating that the playback operation is paused on the display unit 151 (S325). In addition, the controller 180 stops the processing of the user input related to the control of the reproduction operation except for the termination of reproduction (S330). That is, in response to a key input or a touch input through the display unit 151, an operation related to the control of the reproducing operation such as rewinding, fast forwarding, and continuous reproducing may be prevented, thereby preventing a wrong operation. However, when the key input corresponding to the end of playback or the icon corresponding to the end of playback is touched, the playback operation may be completely terminated.

Upon receipt of the A2DP Suspend command, processing of the command related to the AVRCP profile is also stopped, so that a command corresponding to an operation such as Play, Pause, Fast forward, Rewind, forward, backward, etc. cannot be transmitted from the audio output device 200. .

If the AVDTP Suspend command is not received, but the end of the operation through the mobile terminal 100 is selected, the controller 180 ends the reproduction operation (S315).

Referring to FIG. 4B, when a command related to a profile other than A2DP or ACRCP is received (S335), the controller 180 controls to perform an operation corresponding to the received command (S340). Examples of commands related to other profiles include commands related to call function or volume control using HSP / HFP, commands related to phonebook or call history inquiry, SMS search, object push profile (FTP) / File Transfer Profile ), A command related to the transmission of data such as a file or a vCard from the audio output device 200.

If the end of playback is selected, the controller 180 causes the playback operation to end completely (S345).

However, upon receiving the AVDTP Start command, which is a command for requesting the start of the playback operation, from the audio output device 200, the controller 180 recovers to the state before receiving the AVDTP Suspend command (S335). As a result, the message indicating that the playback operation is paused disappears, and user input related to the control of the playback operation is normally processed.

The controller 180 returns to step S305 to resume transmission of the suspended A2DP stream. As transmission of the A2DP stream resumes, an audio signal is output to the audio output device 200 again.

By this process, after the stream transmission is stopped, it can be restarted from the stopped state again.

5A and 5B are diagrams illustrating a state in which an audio stream is transmitted by being connected to a portable terminal and an audio output device according to an embodiment of the present invention. As illustrated in FIG. 5A, the portable terminal 100 may be connected to the audio output device 200 through short-range communication in a multimedia playback mode to transmit an A2DP stream to the audio output device 200. The portable terminal 100 displays a screen 400 corresponding to the multimedia playback mode.

5B illustrates a state in which a playback operation is performed on a file selected as a background mode. In this case, the screen 410 corresponding to the currently operating state may be displayed, and information about a file on which the playback operation is being performed may be displayed in one region of the screen 410.

6A and 6B illustrate a case where an AVDTP Suspend command is received from an audio output device. As shown in FIG. 6A, when the portable terminal 100 receives the AVDTP Suspend command during the playback operation, a message 425 indicating that the playback operation is paused is displayed on the multimedia playback mode screen 420. In addition to the end of the playback, the processing of the user input related to the control of the remaining playback operations is stopped.

In addition, when the AVDTP Suspend command is received while the playback operation is performed on the file selected as the background mode, as shown in FIG. 6B, the screen 430 corresponding to the current operation state indicates that the playback operation is paused. Message 435 is displayed. Also in this case, the processing of the user input related to the control of the remaining playback operations other than the end of playback is stopped.

7A and 7B illustrate a case where an AVDTP Start command is received from an audio output device. As shown in FIG. 7A, when the AVDTP Start command is received while the playback operation is paused in the portable terminal 100, the multimedia playback mode screen 440 in which the message indicating the pause status is disappeared is displayed, and playback is performed. User input related to the control of the operation is processed normally. In addition, transmission of the interrupted audio stream is resumed.

Similarly, when the playback operation is paused in the background mode, the A2DP Start command is received. As shown in FIG. User input is processed normally and transmission of the audio stream is resumed.

In this way, when the AVDTP Start command is received in the pause state, it returns to the state before the pause and transmits the audio stream again.

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 device, and the like, and also include a carrier wave such as transmission through the Internet. The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.

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

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

2 is a view showing an example of an audio output device connectable to a portable terminal according to the present invention;

3 is a block diagram of an audio output device shown in FIG.

4A and 4B are flowcharts provided for describing an operation control method of a mobile terminal according to an embodiment of the present invention;

5A and 5B are views illustrating a state in which an audio stream is transmitted by being connected to a portable terminal and an audio output device according to an embodiment of the present invention;

6A and 6B illustrate a case in which an AVDTP Suspend command is received from an audio output device.

7A and 7B illustrate a case where an AVDTP Start command is received from an audio output device.

Explanation of symbols on the main parts of the drawings

100: mobile terminal 200: audio output device

Claims (11)

Connecting to an audio output device through short-range communication according to a first profile for distributing an audio stream, and transmitting the audio stream to the audio output device; Stopping transmission of the audio stream when receiving a command requesting a pause of a reproduction operation from the audio output device; And Displaying a message indicating that the playback operation is in a pause state on a display unit, and stopping processing of a user input related to the control of the playback operation except for ending playback. The method of claim 1, If the command for requesting the start of the playback operation is received from the audio output device, returning to the state before receiving the pause request command, and resuming transmission of the audio stream. Control method. The method of claim 1, And the first profile is an A2DP profile. The method of claim 1, Connecting to the audio output device according to a second profile, and performing an operation corresponding to a command related to the received second profile. The method of claim 1, The second profile includes a PBAP, OPP, FTP, HSP, and HFP profile. The method of claim 1, And terminating transmission of the audio stream when the reproduction end is requested. A display unit; A wireless communication unit for connecting the audio output device through short-range communication; And Connecting to the audio output device according to a first profile for distribution of an audio stream through the wireless communication unit, transmitting an audio stream to the audio output device, and requesting a pause of a reproduction operation from the audio output device. And a control unit for stopping transmission of the audio stream and displaying a message indicating that the playback operation is paused on the display unit. The method of claim 7, wherein And the controller stops the processing of the user input related to the control of the reproduction operation except for the termination of reproduction. The method of claim 8, The control unit, upon receiving a command for requesting the start of the playback operation from the audio output device, returns to a state before receiving the pause request command and resumes transmission of the audio stream. terminal. The method of claim 8, And the first profile is an A2DP profile. An audio output device for outputting an audio signal corresponding to an audio stream received through short-range communication connected according to a first profile for distributing an audio stream; And A message indicating that the playback operation is paused when the audio stream is transmitted through the short range communication and the command for requesting the pause of the playback operation is received from the audio output device; And a portable terminal to stop processing of a user input related to the control of the reproduction operation except for termination of reproduction.

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