KR20110092713A - System and method for offering real time multimedia service - Google Patents

Abstract

PURPOSE: A real time multimedia service providing method and a system for the same are provided to cancel the transmission of an unnecessary packet by the reproduce mode of a multimedia data. CONSTITUTION: A multimedia providing server(200) transmits multimedia data in real time. A mobile terminal(100) transmits a port blocking message to the multimedia providing server when a video mode is activated. The video data is reproduced in the video mode among the real time multimedia data reproduction. The mobile terminal transmits the port blocking message to the multimedia server when the audio mode is activated.

Description

Method and system for providing real-time multimedia service {SYSTEM AND METHOD FOR OFFERING REAL TIME MULTIMEDIA SERVICE}

The present invention relates to a method and a system for providing a real time multimedia service. More particularly, the present invention relates to a method and a system for providing a real time multimedia service according to a reproduction mode of a multimedia data.

In addition to the voice call function, the mobile terminal has a variety of additional functions such as text message transmission and reception function, picture taking function, music listening function, digital broadcasting service function, e-mail service function and instant messenger service. Function and so on. In particular, recent portable terminals provide a multimedia service for receiving and playing multimedia data from a server in real time.

The portable terminal providing the real-time multimedia service may select an audio mode for playing only audio data or a video mode for playing only video data. When the video mode is selected, the conventional portable terminal sets the audio volume to zero ("0"). Alternatively, when the audio mode is selected, the conventional portable terminal hides the video data reproduction region or outputs a preset image in place of the video data. Such a conventional portable terminal performs decoding by receiving audio data from a multimedia providing server that does not require actual reproduction but only sets the audio output volume to zero in the video mode. In addition, although the video data is not output to the display unit in the audio mode, the portable terminal receives the video data from the server and performs decoding. That is, the conventional real-time multimedia providing method has a problem that unnecessary packet data fee occurs in the user side. In addition, there is a problem in that resources are wasted due to decoding of unnecessary audio packet data or video packet data in terms of a portable terminal.

Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a method and system for providing a real-time multimedia service that can stop the transmission of unnecessary packet data according to a multimedia data playback mode. have.

According to an aspect of the present invention, there is provided a method of providing a real-time multimedia service, including: checking whether a video mode for playing only video data or an audio mode for playing only audio data is activated when real-time multimedia data is played; And generating a port blocking message for requesting blocking of a port for transmitting audio data when the video mode is activated, and transmitting the generated port blocking message to a multimedia providing server, and requesting for blocking the port for transmitting video data when the audio mode is activated. And generating and transmitting the same to the multimedia providing server.

Real-time multimedia service providing system according to an embodiment of the present invention for achieving the above object is a multimedia providing server for transmitting multimedia data in real time; And a port blocking message requesting blocking of a port for transmitting audio data when the video mode for playing only video data is played during real-time multimedia data playback, to the multimedia server, and transmitting video data when activating an audio mode for playing audio data only. And a portable terminal for transmitting a port blocking message requesting blocking of a port to the multimedia server.

As described above, the method and system for providing a real-time multimedia service according to the present invention can save packet data charges by receiving only packet data necessary according to a multimedia playback mode. In addition, the present invention can prevent battery consumption and resource waste of the mobile terminal due to decoding of unnecessary packet data.

1 is a view schematically showing a system for providing a real-time multimedia service according to the present invention;
2 is a block diagram schematically illustrating a configuration of a portable terminal according to an embodiment of the present disclosure;
3 is a flowchart illustrating a method of providing a real-time multimedia service of a multimedia providing server according to an exemplary embodiment of the present invention.
4 is a flow chart illustrating a real-time multimedia playback method of a mobile terminal according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. In addition, detailed descriptions of well-known functions and configurations that may blur the gist of the present invention will be omitted.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

Prior to the description, a portable terminal according to an embodiment of the present invention is a terminal that can use a real-time multimedia service, a mobile communication terminal, a personal digital assistant (PDA), a smart phone, a portable multimedia player (Portable Multimedia) Player: PMP), PC (Personal Computer), notebook (Note Book), IPTV (Internet Protocol TeleVision), digital TV and the like can be included. Hereinafter, for convenience of description, a mobile communication terminal will be described as an example.

1 is a view schematically showing a system for providing a real-time multimedia service according to an embodiment of the present invention.

Referring to FIG. 1, a system according to an embodiment of the present invention may include a mobile terminal 100 and a multimedia providing server 200.

The multimedia providing server 200 may provide a real time multimedia service such as a streaming service, a video on demand service, and the like. For example, the multimedia providing server 200 may transmit multimedia data to the mobile terminal 100 in real time using a Real Time Streaming Protocol (RTSP). However, the present invention is not limited thereto. That is, the multimedia providing server 200 may transmit the multimedia data to the mobile terminal 100 in real time using various protocols capable of providing the multimedia data in real time. The multimedia data is generally composed of video data and audio data, and the video data and audio data may be transmitted to different ports. In particular, the multimedia providing server 200 according to the present invention releases a port blocking message or the blocked port requesting to close some of the ports for transmitting the multimedia data from the mobile terminal 100 (Open). Receive a port block release message requesting to send a), and transmits a response message to the port block message to the mobile terminal (100). The response message may be an OK message of the RTSP. That is, the multimedia providing server 200 may stop the transmission of the video data or the audio data by closing the requested port when the port blocking message is received. On the other hand, the multimedia providing server 200 transmits a response message to the portable terminal 100 when the port block release message is received, and releases the block included in the port block release message (Open). The video data or audio data which has been stopped can be transmitted to the mobile terminal 100.

The mobile terminal 100 is a terminal that can use a real-time multimedia service, such as VOD service. To this end, the portable terminal 100 may request the multimedia providing server 200 to transmit the multimedia data, and receive and reproduce the multimedia data in real time from the multimedia providing server 200. For example, the mobile terminal 100 may establish a streaming session with the multimedia providing server 200 and transmit / receive streaming data using the RTSP. However, the present invention is not limited to using RTSP. That is, the mobile terminal 100 may receive the multimedia data using various protocols capable of providing the multimedia data in real time. In particular, the mobile terminal 100 according to the present invention may generate a port blocking message requesting the transmission of audio data to be stopped and transmit the generated multimedia data to the multimedia providing server 200 when the video mode for playing only video data is activated. have. Alternatively, when the audio mode for reproducing only audio data is activated while the multimedia data is being reproduced, the portable terminal 100 may generate a port blocking message requesting to stop transmission of the video data and transmit the generated port blocking message to the multimedia providing server 200. The port blocking message may be generated using a PAUSE message of RTSP. In detail, the portable terminal 100 may generate a port blocking message by adding a "Transport" field including a specific port number to a conventional PAUSE message as shown in Table 1 below.

Referring to <Table 1>, it can be seen that the port blocking message is a form in which a "Transport" field is added to a conventional PAUSE message. In this case, when the port blocking message requesting transmission of audio data is stopped, the "Transport" field includes a port number on which audio data is being transmitted, and when the port blocking message requesting transmission of video data is "Ported" Field contains the port number on which video data is being transmitted. The port number may include a data port number through which actual audio data or video data is transmitted, and a control port number for transmitting and receiving control signals such as pause and playback. That is, the port blocking message of Table 1 is a message requesting blocking of the 4588 port and the 4589 port. The "CSeq" field and the "Session" field of Table 1 are in accordance with the conventional RTSP standard and will not be described in detail.

Meanwhile, when the video mode or the audio mode is released, the portable terminal 100 may generate a port blocking release message requesting the transmission of the audio data or the video data that has been stopped, and transmit it to the multimedia providing server 200. The unblocking message may be generated using a PLAY message of the RTSP as shown in Table 2 below.

Referring to <Table 2>, it can be seen that the port blocking release message is a form in which a "Transport" field is added to a conventional PLAY message. The "Transport" field contains the port number where the transmission was stopped. That is, the port unblocking message of Table 2 is a message for requesting unblocking of ports 4588 and 4589.

Meanwhile, although FIG. 1 illustrates that the multimedia providing server 200 and the portable terminal 100 are connected through a wireless channel, the present invention is not limited thereto. That is, the multimedia providing server 200 and the portable terminal 100 according to the present invention may be connected through at least one of wired and wireless.

2 is a block diagram schematically illustrating a configuration of a mobile terminal 100 according to an embodiment of the present invention.

1 and 2, the portable terminal 100 according to an exemplary embodiment of the present invention includes an audio processor 160, a wireless communication unit 150, an input unit 140, a display unit 130, and a storage unit 120. And a controller 110. The controller 110 may include a multimedia player 111 and an audio data generator 112.

The audio processor 160 transmits an audio signal to a speaker SPK or transmits an audio signal input from a microphone MIC to the controller 110. That is, the audio processor 160 converts the analog voice signal input from the microphone MIC into a digital voice signal and transmits the digital voice signal to the controller 110, or converts the digital voice signal into an analog voice signal to the speaker SPK. ) In particular, the audio processor 160 according to the present invention may decode audio data received from the multimedia providing server 200 and output the decoded audio data to the speaker SPK.

The wireless communication unit 150 is a device for transmitting and receiving a radio signal with a base station, a transmission and reception separation unit (not shown) for separating the transmission and reception signals, RF (Radio Frequency) transmission unit (not shown) for up-converting and amplifying the frequency of the transmission signal And an RF receiver (not shown) for low noise amplifying the received signal and down converting the frequency. In particular, the wireless communication unit 150 according to an embodiment of the present invention may receive real-time multimedia data from the multimedia providing server 200 under the control of the controller 110. In addition, the wireless communication unit 150 may transmit a port blocking message to the multimedia providing server 200 requesting to stop transmission of some of the multimedia data (eg, video data or audio data). For example, when the video mode is activated, the wireless communication unit 150 transmits a port blocking message to the multimedia providing server 200 requesting blocking of a port where audio data is transmitted from the multimedia data. When activated, a port blocking message for requesting blocking of a port where video data is transmitted among the multimedia data may be transmitted to the multimedia providing server 200. In addition, when the video mode or the audio mode is released, the wireless communication unit 150 may transmit a port blocking release message to the multimedia providing server 200 requesting transmission of the stopped audio data or video data. Detailed descriptions of the port blocking release message and the port blocking message will be omitted since they have been described above with reference to FIG. 1.

The input unit 140 may receive a number or various character information, and may include an input key and a function key for setting various functions and controlling the function of the portable terminal 100. For example, the input unit 140 may include a call key for a voice call request, a video call key for a video call request, an end key for requesting an end of a voice call or a video call, a volume key for adjusting an output volume of an audio signal, and the like. It may include. In particular, the input unit 140 according to the present invention may include a function key for requesting multimedia playback, a function key for activating a video mode, a function key for activating an audio mode, and the like. The input unit 140 may be an input device such as a touch pad, a touch screen, a button keypad of a general key arrangement, a QWERTY keypad, or the like according to a form of the portable terminal 100. It may be formed of any one or a combination thereof.

The display unit 130 may display various menu screens of the mobile terminal 100, user data input by the user, function setting information, or various information provided to the user. For example, the display unit 130 may output a boot screen, a standby screen, a menu screen, a video call screen, and the like. In addition, the display unit 130 may output a multimedia playback screen. In particular, in the audio mode, the display unit 130 may output a preset image in place of the multimedia data under the control of the controller 110. The display unit 130 may be formed of a liquid crystal display (LCD), an organic light emitting diode (OLED), an active matrix organic light emitting diode (AMOLED), or the like. In addition, when the display unit 130 is formed in the form of a touch screen, the display unit 130 may be operated as the input unit 140.

The storage unit 120 is an operating system (OS) of the portable terminal 100 according to an embodiment of the present invention, other options (options) function, for example, sound playback function, image or video playback function, broadcast playback function, etc. In addition to necessary application programs, user data and data transmitted and received through the wireless communication unit 150 may be stored. In particular, the storage unit 120 according to the present invention can store a multimedia playback application program for real-time multimedia data playback. In addition, the storage unit 120 may store an image or a video output in place of video data in the audio mode.

The controller 110 controls the overall operation of the mobile terminal 100 and the signal flow between the internal blocks of the mobile terminal 100, and functions as a data processor for processing data transmitted and received through the wireless communication unit 150. It may include. In particular, the controller 110 according to the present invention may include a multimedia player 111 and an audio data generator 112.

The audio data generator 112 may generate synchronization audio data for smooth reproduction of the video data when the video mode is activated. This is because video data is generally reproduced in synchronization with audio data. In other words, when audio data is not periodically transmitted, the video data may not be smoothly reproduced due to the non-existence of the audio data for synchronization. To prevent this, the audio data generation unit 112 may generate synchronization audio data by extracting synchronization information from audio data of multimedia data being played when the video mode is activated. The synchronization audio data may be stored in the storage 120. The stored synchronization audio data may be used when the multimedia data is replayed. Meanwhile, if the multimedia player 111 is not designed to reproduce video data in synchronization with audio data, the audio data generator 112 may be omitted.

The multimedia player 111 may decode and play multimedia data received in real time through the wireless communication unit 150. The multimedia player 111 may play at least one of video data and audio data according to a playback mode (general mode, audio mode, and video mode) of the multimedia data. In particular, the multimedia player 111 according to the present invention may receive and play only audio data from the multimedia providing server 200 in the audio mode. In this case, the multimedia player 111 may output the preset image or video to the display unit 130 in place of the video data. To this end, the controller 110 may generate a port blocking message requesting to stop transmission of video data when the audio mode is activated, and transmit the generated port blocking message to the multimedia providing server 200 through the wireless communication unit 150. have. Alternatively, the multimedia player 111 may receive and play only video data from the multimedia providing server 200 in the video mode. At this time, the multimedia player 111 sets the output volume of the audio processor 160 to zero (0), and synchronizes the audio data generated by the audio data generator 112 with the synchronized audio data. Data can be played back. To this end, the controller 110 may generate a port blocking message requesting the transmission of the audio data when the video mode is activated, and transmit the generated port blocking message to the multimedia providing server 200 through the wireless communication unit 150. have. In addition, when the video mode or the audio mode is released and the playback mode of the multimedia data is changed to the normal mode, the multimedia player 111 may play the audio data and the video data together. To this end, the controller 110 checks whether a video mode or audio mode release signal is input through the input unit 140, and when the video mode or audio mode release signal is input, transmits the blocked audio data or video data. A port blocking release message may be generated and transmitted to the multimedia providing server 200 through the wireless communication unit 150.

Meanwhile, although not shown in FIG. 2, the portable terminal 100 may include a camera module for capturing an image or a video, a short range communication module for short range wireless communication, a broadcast receiving module for broadcast reception, and a digital sound source reproducing module such as an MP3 module. And components having additional functions such as an internet communication module that performs an internet function. These components may not be enumerated because all of them vary according to the convergence trend of digital devices. However, the mobile terminal 100 according to the present invention may further include components of the same level as those mentioned above. It may include.

In the above, the schematic configuration of the mobile terminal 100 according to the embodiment of the present invention has been described. Hereinafter, a method of providing a real-time multimedia service according to an embodiment of the present invention will be described.

3 is a flowchart illustrating a method of providing a real-time multimedia service by the multimedia providing server 200 according to an exemplary embodiment of the present invention.

Prior to the detailed description, it will be described on the assumption that the portable terminal 100 and the multimedia providing server 200 has formed a communication channel.

1 to 3, the multimedia providing server 200 according to an exemplary embodiment of the present invention may determine whether a real-time multimedia data transmission request message is received from the mobile terminal 100 in step 301. If the real-time multimedia data transmission request message is not received, the multimedia providing server 200 may proceed to step 319 to perform a corresponding function. On the other hand, when the real-time multimedia data transmission request message is received, the multimedia providing server 200 may proceed to step 303 to transmit the requested multimedia data to the mobile terminal 100. The multimedia data includes video data and audio data, and the multimedia providing server 200 may transmit the video data and the audio data to the portable terminal 100 through different ports.

In operation 307, the multimedia providing server 200 may determine whether a port blocking message (eg, a PASP message of an RTSP having a “Transport” field added) is received. If the blocking message is not received, the multimedia providing server 200 may proceed to step 319 to perform a corresponding function. For example, the multimedia providing server 200 may pause transmission of multimedia data when a pause request is received from the mobile terminal 100. On the other hand, when the blocking message is received, the multimedia providing server 200 may proceed to step 309 to close a specific port (Close). To this end, the multimedia data providing server 200 checks the existence of the "Transport" field when receiving the PASP message of the RTSP, and if the "Transport" field exists, it is determined to be a port blocking message and included in the "Transport" field. You can close the port.

Next, in step 313, the multimedia providing server 200 may check whether a port block release message (eg, a PSP message of an RTSP having a “Transport” field added) is received. If the port blocking release message is not received, the multimedia providing server 200 may proceed to step 319 to perform a corresponding function. For example, the multimedia providing server 200 may pause transmission of multimedia data when a pause request is received from the mobile terminal 100. On the other hand, when the port blocking release message is received, the multimedia providing server 200 may proceed to step 315 to release the port blocking (Open). To this end, the multimedia providing server 200 checks the existence of the "Transport" field when receiving a PLAY message of the RTSP, and if the "Transport" field exists, it is determined to be a port blocking release message and included in the "Transport" field. You can open the port.

In operation 317, the multimedia providing server 200 may check whether an end signal is input. The end signal may be generated when the reproduction of the multimedia data is completed or by a user request (eg, a reproduction end key input). If the end signal is not input, the multimedia providing server 200 may return to step 303 to repeat the above-described process. On the other hand, when the end signal is input, the multimedia providing server 200 may stop the multimedia data transmission and terminate the real-time multimedia service.

4 is a flowchart illustrating a real-time multimedia playback method of the mobile terminal 100 according to an embodiment of the present invention.

Prior to the detailed description, it will be described on the assumption that the portable terminal 100 and the multimedia providing server 200 has formed a communication channel.

1 to 4, the controller 110 may determine whether a real-time multimedia playback request occurs in step 401. If the real-time multimedia playback is not requested, the control unit 110 proceeds to step 423 to perform the corresponding function. On the other hand, if the real-time multimedia playback is requested, the controller 110 proceeds to step 403 to transmit the multimedia data transmission request message to the multimedia providing server 200 and to receive the real-time multimedia data from the multimedia providing server 200 wireless communication unit The controller 150 may be controlled to control the multimedia player 111 to decode and play the received multimedia data.

The controller 110 may check whether the video mode or the audio mode is activated in step 405. The video mode or the audio mode may be activated through a touch input when a preset function key input or the display unit 130 is formed as a touch screen. If the video mode or the audio mode is not activated, the controller 110 proceeds to step 421 described later. On the other hand, if the video mode or the audio mode is activated, the controller 110 proceeds to step 407 to generate a port blocking message (eg, a PAUSE message of the RTSP with the “Transport” field added), and then the wireless communication unit 150. The generated port blocking message may be transmitted to the multimedia providing server 200. Here, in the video mode, the port blocking message includes a port number through which audio data is transmitted and an audio control port number through which a control command for transmitting and receiving audio data is transmitted and received. In the audio mode, the port blocking message is a video. It may include a port number to which data is transmitted and a video control port number to which a control command for transmitting and receiving control of video data is transmitted and received.

Next, the controller 110 may check whether a response message (for example, an RTSP OK message) is received from the multimedia providing server 200 in step 409. If the response message is not received, the controller 110 may return to step 403. In this case, although not shown, the controller 110 may output a pop-up window indicating that the response message is not received to one side of the display unit 130 when the response message is not received. On the other hand, when the response message is received, the controller 110 may proceed to step 411 to close the specific port. That is, the controller 110 may control to receive and play only video data among multimedia data in the video mode, and to receive and play only audio data among multimedia data in the audio mode. Although not shown in FIG. 4, in the video mode, the controller 110 controls the audio data generator 112 to generate synchronous audio data, and sets the output volume of the audio processor 160 to zero (“0”). It can also be set to "). Alternatively, in the audio mode, the controller 110 may control to output the preset image to the display 130 in place of the video data.

Next, the controller 110 may check whether a mode release signal is input in step 413. The mode release means changing the play mode of the multimedia data from the video mode or the audio mode to the normal mode. If the mode release signal is not input, the controller 110 may proceed to step 421 described later. On the other hand, if the mode release signal is input, the controller 110 proceeds to step 415 to generate a port blocking release message and transmit it to the multimedia providing server 200 through the wireless communication unit 150. The port blocking release message may be generated by adding a "Transport" field to the PLAY message of the RTSP. In this case, the "Transport" field includes port information to be unblocked.

In operation 417, the controller 110 may determine whether a response message for the port blocking release message is received. If the response message is not received, the controller 110 may return to step 411. In this case, although not shown, the controller 110 may output a pop-up window indicating that the response message is not received to one side of the display unit 130 when the response message is not received. On the other hand, if a response message is received, the controller 110 may proceed to step 419 to release the blocking of a specific port. That is, the controller 110 may control the wireless communication unit 150 to receive both video data and audio data, and change the multimedia player 111 to the normal mode. In detail, when the audio mode is released, the controller 110 stops the output of an image or a video output instead of the video data, and when the video mode is released, stops the generation of the synchronization audio data, and the audio processor The output volume of 160 may be restored to the previous output volume.

The controller 110 may check whether a termination signal is input in step 421. The end signal may be generated by the completion of playing of the multimedia or by a user request (for example, input of a play end key). If the end signal is not input, the controller 110 may return to step 403 to repeat the above-described process. On the other hand, when the end signal is input, the controller 110 may transmit a message requesting the suspension of multimedia data transmission to the multimedia providing server 200 and terminate the real-time multimedia playback.

On the other hand, it has been described above that the video mode or the audio mode is activated during multimedia data reproduction, but the present invention is not limited thereto. For example, the present invention may request the playback of multimedia after selecting the playback mode of the multimedia data as the video mode or the audio mode. When the video mode or the audio mode is selected as described above, when the multimedia data is requested to be played back, the control unit 110 requests the playback request message requesting the playback of the multimedia to block transmission of any one of the audio data or the video data. It may include and transmit to the multimedia providing server 200. Alternatively, the controller 110 may transmit the playback request message and the port blocking message together.

In addition, according to the present invention, the multimedia playback mode may be set to a video mode or an audio mode according to the state of the portable terminal 100. For example, when the portable terminal 100 is in the vibration mode, the controller 110 may automatically set the playback mode of the multimedia data to the video mode. Alternatively, in the vibration mode, the controller 110 may notify the vibration mode and output a pop-up window for selecting a playback mode to the display unit 130.

In the above description of the preferred embodiments through the present specification and drawings with respect to a method and system for providing a real-time multimedia service according to an embodiment of the present invention, although specific terms are used, it is only easy to describe the technical content of the present invention It is only used in a general sense to help the understanding of the present invention is not limited to the above-described embodiment. That is, it is apparent to those skilled in the art that various embodiments based on the technical idea of the present invention are possible.

100: mobile terminal 110: control unit
111: multimedia playback unit 112: audio data generation unit
120: storage unit 130: display unit
140: input unit 150: wireless communication unit
160: audio processing unit 200: multimedia providing server

Claims (14)

In the real-time multimedia service providing method,
Checking whether a video mode for reproducing only video data or an audio mode for reproducing only audio data is activated when real-time multimedia data is reproduced; And
Generates a port blocking message requesting the blocking of the port for transmitting audio data when the video mode is activated and transmits it to the multimedia providing server, and generates a port blocking message requesting the blocking of the port for transmitting video data when the audio mode is activated. Real-time multimedia service providing method comprising the step of transmitting to the multimedia providing server. The method of claim 1,
And receiving a response message to the port blocking message from the multimedia providing server. The method of claim 1,
The port blocking message
Method for providing a real-time multimedia service, characterized in that the port information to be blocked is added to the PAUSE message of the Real Time Streaming Protocol (RTSP). The method of claim 1,
Generating a port unblocking message requesting unblocking of a port for transmitting audio data when the video mode is released and transmitting the generated message to a multimedia providing server; And
And generating a port blocking release message for requesting release of a port for transmitting video data when the audio mode is released and transmitting the same to a multimedia providing server. The method of claim 4, wherein
The port unblocking message is
Method for providing a real-time multimedia service, characterized in that the port information to be unblocked is added to the PLAY message of the Real Time Streaming Protocol (RTSP). The method of claim 1,
Generating synchronization audio data for synchronizing the video data when the video mode is activated; And
And at least one of setting the output volume of the audio to zero. The method of claim 1,
And outputting a predetermined image or video to one side of the display unit when the audio mode is activated. In the system for providing a real-time multimedia service,
A multimedia providing server for transmitting multimedia data in real time; And
Transmitting a port blocking message requesting the blocking of a port for transmitting audio data to the multimedia server when a video mode for playing only video data is played during real-time multimedia data playback, and transmitting video data for activating an audio mode for playing audio data only. And a portable terminal for transmitting a port blocking message requesting blocking of a port to the multimedia server. The method of claim 8,
The mobile terminal
A port for generating a block release message for requesting release of a port for transmitting audio data when the video mode is released and transmitting the message to the multimedia providing server, and for requesting for release of a port for transmitting video data when the audio mode is released. Real-time multimedia service providing system, characterized in that for generating a block release message and transmitting to the multimedia providing server. 10. The method of claim 9,
The mobile terminal
Generating the port blocking message by adding port information to be blocked to a PAUSE message of RTSP (Real Time Streaming Protocol), and generating the port unblocking message by adding port information to be unblocked to a PLAY message of RTSP; Real time multimedia service providing system. The method of claim 8,
The mobile terminal
And synchronous audio data for synchronizing the video data when the video mode is activated, and setting the audio output volume to zero. The method of claim 8,
The mobile terminal
And outputting a predetermined image or video to one side of the display unit in place of the video data when the audio mode is activated. The method of claim 8,
The mobile terminal
A multimedia player for playing multimedia;
An input unit configured to input an input signal for activating the video mode or the audio mode when the multimedia data is reproduced; And
Receiving multimedia data, transmitting the port blocking message to the multimedia providing server in response to the video mode or the audio mode, and transmitting a port blocking release message to the multimedia providing server when the video mode or the audio mode is released; Real-time multimedia service providing system comprising a wireless communication unit. The method of claim 13,
The mobile terminal
And an audio data generation unit for extracting synchronization information from the audio data of the multimedia data when the video mode is activated and generating synchronization audio data for synchronizing the video data using the extracted synchronization information. Real time multimedia service providing system.

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