KR20080111924A - Multimedia network system and multimedia sharing method using ultra wide band communication for vehicle - Google Patents

Abstract

A multimedia network system and a multimedia sharing method of vehicles using ultra-wideband wireless communication are provided to transmit and receive a file or multimedia in a streaming method by using ultra-wideband wireless communication. Multimedia is received in streaming according to an ultra-wideband protocol. A plurality of ultra-wideband apparatus(202-1~n) outputs and performs audio/video process of the received multimedia according to a type of multimedia to the ultra-wideband protocol selected ultra-wideband apparatus by a user. An input part includes a selection key for selecting ultra-wideband apparatus transmitting the multimedia.

Description

MULTIMEDIA NETWORK SYSTEM AND MULTIMEDIA SHARING METHOD USING ULTRA WIDE BAND COMMUNICATION FOR VEHICLE}

1 is a view showing the configuration of a multimedia network system of a vehicle using ultra-wideband wireless communication according to the present invention

2 is a diagram illustrating a configuration of the audio system of FIG.

3 is a diagram illustrating the configuration of the ultra-wideband device of FIG.

4 is a flowchart illustrating a multimedia sharing method in an audio system of a multimedia network system of a vehicle using ultra wideband wireless communication according to the present invention.

5 is a flowchart illustrating a multimedia sharing method of a multimedia network system of a vehicle using ultra-wideband wireless communication according to the first embodiment of the present invention.

6 is a flowchart illustrating a multimedia sharing method of a multimedia network system of a vehicle using ultra-wideband wireless communication according to a second embodiment of the present invention.

7 is a flowchart illustrating a multimedia sharing method of a multimedia network system of a vehicle using ultra-wideband wireless communication according to a third embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: audio control unit 20, 211: storage unit

30, 212: input unit 40, 213: display unit

50: multimedia processing unit 60, 215: ultra-wideband interface unit

100: audio system 200: ultra-wideband device

210: UWB control unit 216: video processing unit

217: audio processing unit 219: wired interface unit

The present invention relates to a multimedia network system of a vehicle, and more particularly, to a multimedia network of a vehicle using ultra wideband wireless communication, which can transmit and receive files and multimedia by streaming using ultra wideband (UWB) wireless communication. It relates to a system and a multimedia sharing method.

In general, a vehicle is equipped with a car audio system to reduce the freeness of the driver and passengers while driving. Such car audio systems are usually equipped with a radio receiver for receiving AM / FM radio and a tape player for playing music recorded on tape. Recently, however, car audio systems have been introduced with various functions such as digital multimedia broadcasting (DMB) receivers, CD players, DVD players, MP3 players, and DiVX players as well as radios and tapes. Typically, the body of a car audio system is installed in the center fascia of the dashboard of the vehicle, and the speakers connected to the car audio system are connected to the upper surface of the vehicle dashboard or the inner side of the vehicle front door and the upper side of the rear dashboard or the inner side of the vehicle rear door. It is installed on the back.

In addition, in recent years, the rear occupant, that is, the passenger sitting in the rear seat of the vehicle directly controls the operation of the car audio system installed in the center plane of the dashboard to play the multimedia media provided by the car audio system body or the car audio system. A lot of rear entertainment systems (RESs) that can play separate multimedia media are also being installed.

In addition, the vehicle is also equipped with a rear alarm system, a rear image recording device, a vehicle independent type that is purchased separately and installed by the driver without being integrated with a vehicle such as a navigation terminal and a portable multimedia player (PMP). Devices are also on the rise.

The systems and devices installed in these vehicles are basically connected by wires, and recently, multimedia devices that are integrally mounted in a vehicle are connected to a MOST network for forming a network using optical cables. Is connected by.

As described above, as many electronic systems and devices are installed in a vehicle, wires such as wires and optical cables for connecting the electronic systems and devices are increased, which leads to complicated wiring of the vehicle and increases in weight of the vehicle by the wires. there was.

In addition, there is a problem that the fuel economy of the vehicle is lowered due to the weight increase of the vehicle by the wire.

Accordingly, an object of the present invention is to provide a multimedia network system and a multimedia sharing method of a vehicle using ultra wide band wireless communication capable of transmitting and receiving files and multimedia by streaming using ultra wide band (UWB) wireless communication. .

The apparatus of the present invention for achieving the above object; A plurality of ultra-wideband devices that receive multimedia by streaming according to the ultra-wideband protocol and perform audio and / or image processing according to the multimedia form and output the multimedia, and ultra-wideband devices and users registered in advance when playing multimedia And a car audio system that transmits the multimedia being played by streaming according to the ultra-wideband protocol after establishing communication with the ultra-wideband devices selected by.

The method of the present invention for achieving the above object; Determining, by the audio system, whether the event is an event occurring in the audio system or an ultra wideband device when a multimedia playback event occurs; and when the event is an event in the audio system, a first ultra wideband device connected to speakers. Transmitting audio multimedia to the first ultra-wideband device by streaming after establishing communication with each other; and if the event is generated from the second ultra-wideband device, whether the event is due to a multimedia playback request or not. Determining whether it is, and if it is determined by the multimedia playback request, playing the requested multimedia after establishing communication with the second ultra wideband device, transmitting the reproduced multimedia to the second ultra wideband device by streaming, and multimedia Occupancy As long as by blue comprises the step of reproducing the first to receive the streaming 2 seconds after setting, and communication speed device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to deviate from the gist of the present invention.

1 is a view showing the configuration of a multimedia network system of a vehicle using ultra-wideband wireless communication according to the present invention.

Referring to FIG. 1, a multimedia network system of a vehicle using ultra wide band wireless communication according to the present invention includes an audio system 100 and a plurality of ultra wide band devices 200.

The audio system 100, as a host, has identification information and characteristic information on a plurality of ultra-wideband devices 200, and plays back a plurality of ultra-wideband devices 200 which are preset or selected by a user during multimedia playback. The multimedia data being used is transmitted by streaming according to the ultra wideband (UWB) protocol, or the multimedia data is received by the streaming according to the UWB protocol from the UWB device 200 to be played or stored and displayed. The identification information may be registered and stored at the time of production, or may be registered by a user. Since the registration of the UWB device 200 is made according to the UWB specification, the description thereof will be omitted. Here, multimedia data means moving picture and audio data received by a DMB receiver, audio data obtained by converting an analog audio signal received by a radio into a digital signal, and audio data obtained by converting an analog audio signal reproduced by a tape player into a digital signal. , Video and audio data and MP3 data played from a CD or DVD player. Therefore, control information including the type information of the transmitted multimedia data should be inserted into the header of the frame format according to the UWB specification. The characteristic information is information such as whether the specific UWB device 200 outputs only audio, only video, or both video and audio. This is to prevent unnecessary allocation of channels by transmitting unnecessary multimedia data to the UWB device 200. For example, if the UWB device 200-1 is a device connected to any speaker of the vehicle, the audio system 100 does not need to transmit multimedia data for an image, and thus only the multimedia data for audio may be transmitted.

The ultra-wideband device 200 performs data communication with the audio system 100 according to the UWB protocol as a host or a client, and receives multimedia data from the audio system as streaming. In addition, the ultra-wideband device 200 having a host function receives a multimedia signal or data from an external device and transmits it to the audio system 100 according to the UWB protocol.

In FIG. 1, the first UWB device 200-1 shows a case where the speaker 201 of the audio system 100 is connected. When four speakers 201 are provided in a vehicle, four first UWB devices 200-1 should be provided in the vehicle.

The second UWB device 200-2 shows a case where the RES 202 is connected, and the third UWB device 200-3 shows a case where the monitor 203 and the headset 204 are connected, and the nth The UWB device 200-n shows a case where a PMP is connected. In addition to the PMP, the UWB device 200 may also be connected to a laptop, a computer, or the like, so that the file system may be shared with the audio system 100 and the laptop and the computer.

FIG. 2 is a diagram illustrating a configuration of the audio system of FIG. 1.

Referring to FIG. 2, an audio system according to the present invention includes an audio control unit 10, a storage unit 20, an input unit 30, a display unit 40, a multimedia processing unit 50, and a UWB interface unit 60. do.

The audio controller 10 controls the overall operation of the audio system 100 according to the present invention. In particular, the audio controller 10 controls multimedia data processing and transmission and reception according to the UWB specification of the present invention.

The storage unit 20 stores an area for storing a control program for controlling the audio system 100 according to the present invention, and identifies the UWB device 200 registered at the time of production and the UWB device 200 registered by the user. It is composed of an area for storing information and characteristic information, and an area for temporarily storing data generated during the execution of the control program.

The input unit 30 includes a plurality of keys including a key for selecting at least one or more UWB devices 200 among the plurality of UWB devices 200 and a key for selecting characteristics of audio, and a user among the keys. The key data on the key pressed by the key is output to the audio controller 10.

The display unit 40 may be a text liquid crystal display device, a graphic liquid crystal display device, or a touch screen. In the case of the text liquid crystal display device, the display unit 40 displays various operation state information of the audio system 100 under the control of the audio control unit 10. In the case of a graphic liquid crystal display or a touch screen, an image as well as operation state information is displayed.

The multimedia processing unit 50 includes a radio receiver, a DMB receiver, a tape player, a CD / DVD player, an MP3 player, and the like, under the control of the audio control unit 10, and the multimedia data reproduced by the receiver and the players. Convert to and print it out. In addition, the multimedia processing unit 50 may process the corresponding image under the control of the audio control unit 10 and display the multimedia data input through the UWB interface unit 60 through the display unit 40, and the multimedia data for audio. The output to the UWB interface unit 60 to transmit to the UWB device 200-1 connected to the vehicle speaker. If the UWB device 200 that has transmitted the multimedia data has a host function, the multimedia data for the image is transmitted to the audio system 100, and the multimedia data for the audio is directly connected to the vehicle speaker. May be sent as 1).

The UWB interface unit 60 performs data communication according to the UWB protocol with the UWB devices 200 under the control of the audio control unit 10. In particular, the UWB interface unit 60 transmits the multimedia data for the multimedia to be reproduced through the multimedia processing unit 50 wirelessly under the control of the audio control unit 10 in accordance with the UWB protocol, and streaming the multimedia data in accordance with the UWB protocol. Received and output to the multimedia processing unit 50 or the audio control unit 10.

FIG. 3 is a diagram illustrating a configuration of the ultra wide band (UWB) device of FIG. 1.

Referring to FIG. 3, the UWB device 200 according to the present invention includes a UWB control unit 210, a storage unit 211, an input unit 212, a display unit 213, a UWB interface unit 214, and a distribution unit 215. And a video processor 216, an audio processor 219, and a wired interface 219.

The UWB control unit 210 controls the overall operation of the UWB device 200 according to the present invention.

The storage unit 211 may include a control program storage area for storing a control program for controlling a host or client operation of the UWB device 200, an identification information storage area for storing its own unique identification information, and the control program during execution. It consists of a temporary storage area for storing the generated data. When the UWB device 200 operates as a host, in addition to the identification information of the UWB device 200, the identification information of the registered UWB device 200 and the characteristic information mapped to each of the identification information are stored. All.

The input unit 212 includes a key for selecting at least one or more UWB devices 200 among the plurality of UWB devices 200 and a key for selecting audio characteristics when the UWB device 200 operates as a host. A plurality of keys are provided, and key data of a key pressed by a user among the keys is output to the audio controller 10. In contrast, when the input unit 212 operates only as a client, the input unit 212 may be configured only with a key for selecting power and output.

The display unit 213 is a text liquid crystal display or LED, and displays the operation state of the UWB device 200 under the control of the UWB control unit 210. The operation state information may be information such as whether it is on / off, what multimedia is being transmitted or received, and whether the file is shared.

The UWB interface unit 214 performs data communication according to the UWB protocol with the audio system 100 under the control of the UWB control unit 210.

The distribution unit 215 separates the image data and the audio data, which are multimedia data, from the data input from the UWB interface unit 214 under the control of the UWB control unit 210, and converts the image data into the video processing unit 216. The audio processor 217 outputs the multimedia data to the wired interface unit 219. Also, the distribution unit 215 combines the image data and / or audio data input from the video processing unit 216 and the audio processing unit 217 to output to the UWB interface unit 214 or input from the wired interface unit 219. The multimedia data is output to the UWB interface unit 214.

The video processor 216 includes a composite port, an RGB port, and / or an S-Video input / output port (hereinafter referred to as a "video input / output port"), and the image data input from the distribution unit 215 of the UWB control unit 10. The video signal is output through the composite, RGB port, or S-video port by performing video processing according to the format of the input image data under control. In addition, the video processor 216 converts the video signal input through the video input port into video data of a specific format and outputs it to the distribution unit 215.

 The audio processor 217 includes an audio input / output terminal, converts the audio data input from the distribution unit 215 into an audio signal by performing audio processing of a corresponding format under the control of the UWB controller 210, and converts the audio signal into the audio output terminal. Output through In addition, the audio processor 217 converts the audio input through the audio input terminal into audio data of a specific format and outputs it to the distribution unit 215.

The wired interface unit 219 is an IEEE1394 or USB interface device. The wired interface unit 219 is connected to an external device to transmit and receive general data and multimedia data. The wired interface unit 219 is connected to a PMP, such as the nth UWB device 200-n of FIG. Enables playback of video and audio of CDs / DVDs stored or inserted in system 100.

In the above description, the general purpose UWB apparatus has been described. However, since the UWB device 200-1 connected to the speakers fixed to the vehicle operates only as a client and outputs only audio, the input unit 212, the display unit 213, the video processing unit 216, and the wired line can be used to reduce the production cost. It would be desirable to configure without the interface portion 219.

4 is a flowchart illustrating a multimedia sharing method in an audio system of a multimedia network system of a vehicle using ultra-wideband wireless communication according to the present invention.

2 and 4, first, the controller 10 of the audio system 100 checks whether a multimedia playback event occurs in step 311. The multimedia playback event may include multimedia playback from the audio system 100 itself, multimedia request from the UWB device 200 from the UWB device 200, and multimedia from an external device having an independent multimedia playback function connected to the UWB device 200. Occurs by occupancy request.

When the multimedia playback event occurs in step 311, the controller 10 determines whether the event occurred in the audio system 100 itself or the event generated by the UWB device in steps 313 and 315.

As a result of the determination, if the event is generated from the audio system 100 itself, the controller 10 proceeds to step 317 in which the UWB devices 200 preset, that is, a UWB device to which a speaker, etc., which is essentially connected to the audio system, are connected ( 200 and the communication setting, and in step 318, the multimedia processing unit 50 processes the corresponding multimedia, the image is reproduced through the display unit 40, and the audio is wirelessly transmitted through the UWB interface unit 60. To output through the speakers connected to the UWB devices 200-1.

As described above, the controller 10 proceeds to step 319 to check whether another UWB device 200 is selected from the input unit 30.

If another UWB device 200, for example, UWB device 200-2 is selected in step 319, the controller 10 transmits the multimedia currently being played to the UWB device 200-2 by streaming in step 320. The UWB device 200-2 then processes the multimedia and outputs it through the monitor 203 and / or the headset 204.

On the other hand, if the event occurred in the step 315 from the UWB device 200, the control unit 10 proceeds to step 321 to determine whether the independent multimedia playback, that is, whether the event occurs by the multimedia occupancy request.

If it is determined that the independent multimedia playback event occurs, the controller 10 proceeds to step 323 and checks whether the audio system 100 is operating through the multimedia processor 50.

As a result of the inspection, if it is in operation, the controller 10 proceeds to step 335 and transmits a rejection response message to the corresponding UWB device 200. However, if the audio system 100 is not playing the multimedia, the controller 10 transmits an acceptance response message to the corresponding UWB device 200 in step 325 and performs communication setup in step 327.

After the communication setting, the control unit 10 checks whether multimedia is received through the UWB interface unit 60.

In this case, when the multimedia is received, the controller 10 processes the image through the multimedia processing unit 50 and displays the image through the display unit 40 in step 331, and the speaker is connected to the audio through the UWB interface unit 60 again. Audio is transmitted by transmitting to the UWB devices 200-1.

On the other hand, if it is a dependent multimedia playback event instead of the independent multimedia playback event in step 321, that is, the UWB device 200 requests the playback of the multimedia received by the audio system 100 or recorded or stored in a CD / DVD title. If the event is generated by the multimedia playback request, the controller 10 determines whether the audio system is operating in step 333.

If the determination result is in operation, the controller 10 proceeds to step 335 and transmits a rejection response message to the corresponding UWB device 200. If not, the controller 10 proceeds to step 337 and transmits an acceptance response message to the corresponding UWB device 200. do.

After the transmission of the acceptance response message, the controller 10 proceeds to step 339 to drive and play the corresponding multimedia receiver and player, and transmits the played multimedia to the corresponding UWB device 200 through the UWB interface unit 60. do.

In FIG. 3, the multimedia sharing method in the aspect of the audio system 100 has been described. Hereinafter, a method for sharing multimedia according to the present invention will be described with reference to FIGS. 4 to 7 through a procedure diagram between the audio system 100 and the UWB device 200.

4 is a flowchart illustrating a multimedia sharing method of a multimedia network system of a vehicle using ultra-wideband wireless communication according to the first embodiment of the present invention. Hereinafter, a case in which the UWB device is selected by the audio system 100 to transmit multimedia data by streaming will be described with reference to FIGS. 1 and 4.

First, when power is supplied to the audio system 100, communication setting with the first UWB devices 200-1 is performed in step 411, and the audio system 100 is reproduced according to the operation mode previously set or the newly set operation mode in step 413. Multimedia, that is, audio data is transmitted to the first UWB devices 200-1. Then, the first UWB devices 200-1 output the multimedia played by the audio system 100 as an audible sound through the speaker. In this case, if the reproduced multimedia includes an image, the image may be output through the display unit 40 of the audio system 100.

After step 413, the audio system 100 determines whether a specific UWB device 200 is selected through the input unit 30 in step 415.

If the UWB device is selected in step 415, the audio system 100 performs communication setup with the UWB device 200 selected in step 417, and transmits the multimedia being played to the selected UWB device 200 in streaming in step 415.

For example, if the selected UWB device 200 is the second UWB device 200-1 to which the RES 202 is connected, the audio system 100 performs a communication setup with the RES 202, and is currently connected to the RES 202. Send streaming multimedia.

In this case, if the multimedia to be transmitted includes both video and audio, the audio system 100 may select and transmit only one of the video or the audio.

5 is a flowchart illustrating a multimedia sharing method of a multimedia network system of a vehicle using ultra-wideband wireless communication according to a second embodiment of the present invention.

In order to perform the process of FIG. 5, in order for the UWB device 200 to make a multimedia playback request, the audio system 100 is turned on, or the UWB interface unit 214 of the audio system 100 is connected to the audio system 100. Even when the power is off, it should be configured so that the minimum power is applied from the power supply unit (not shown) to check whether the multimedia playback request is generated from the UWB devices 200. In addition, when a multimedia playback request is generated, the audio system 100 should be configured to supply power to the UWB device 200 with components for transmitting the multimedia by streaming.

Under the above conditions, if the multimedia playback request is received from the UWB device 200 in step 511, the audio system 100 determines whether to operate, and in step 512, the UWB device 200 requesting the multimedia playback in response to the operation. Send according to the UWB protocol.

After the transmission of the response message, the audio system 100 establishes communication with the UWB device 200 that has made a multimedia playback request in step 513, and plays back through the multimedia processing unit 50 in step 515.

The reproduced multimedia is transmitted to the UWB device 200 through the UWB interface unit 60 in streaming in step 517. At this time, the audio system 100 does not play its own multimedia. That is, the UWB device 200 which performs a multimedia playback request without outputting the multimedia being played through the first UWB device 200-1 to which the display unit 40 and the vehicle speaker of the audio system 100 in the vehicle are connected. Output only through external device connected with. For example, when the RES 202 requests the multimedia playback, the multimedia is output only through the RES 200. As another example, when a multimedia request is generated from the third UWB device 200-3 to which the monitor 203 and the headset 204 are connected, the multimedia is output only through the monitor 203 and the headset 204.

FIG. 6 is a flowchart illustrating a multimedia sharing method of a multimedia network system of a vehicle using ultra-wideband wireless communication according to a third embodiment of the present invention. ) Shows how to play. That is, when the external device is the RES 202, the multimedia played by the RES 202 itself may be output through speakers connected to the display unit 40 and the first UWB device 200-1 of the audio system 100. The method is shown.

First, in step 611, the second UWB device 200-2 checks whether a multimedia output is selected from the input unit 212.

If the multimedia output is selected in step 611, the second UWB device 200-2 makes a multimedia occupation request in step 613.

Then, the audio system 100 checks whether the modern audio system 100 operates, and transmits an accept or reject response message to the second UWB device 200-2 in step 615 according to the operation.

If the response message is an accept response message, the audio system 100, the second UWB device 200-2, and the first UWB device 200-1 perform communication setup in steps 617 and 618, and in step 619, the RES (202). The multimedia is reproduced from the input and transmitted to the audio system 100 by streaming.

Then, the audio system 100 outputs the image through the display unit 40 if the image is included in the multimedia, and the audio transmits the multimedia audio to the first UWB device 200-1 to which the speaker is connected by streaming. At this time, the first UWB device 200-1 outputs audio as an audible sound through the speaker.

In the above, the case in which the multimedia audio is transmitted to the first UWB device 200-1 through the audio system 100 has been described. However, the second UWB device 200-2 outputs a multimedia image to the audio system 100, and the multimedia is transmitted. Audio may be directly transmitted to the first UWB device 200-1. In this case, the second UWB device 200-2 should include information indicating that the first UWB device 200-2 will directly occupy the multimedia occupancy request, and receive an acceptance response signal from the audio system 100.

In addition, although the case of requesting the audio system 100 has been described above, the multimedia occupancy request may be performed by the third UWB device 200-3.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention has an advantage of preventing the weight increase due to the wiring of the wires in the vehicle since many electronic systems and devices are connected to the vehicle through ultra-wideband wireless communication enabling high-speed data transmission.

In addition, since the weight of the vehicle can be reduced, the fuel efficiency of the vehicle can be improved.

In addition, the present invention can share the multimedia and files that are played on a variety of devices in the vehicle, in particular large vehicles can increase the utilization of the audio system, and various multimedia can be used in a variety of locations to satisfy the passengers of the vehicle Has the advantage to increase.

Claims (10)

A plurality of ultra-wideband devices for receiving multimedia by streaming according to the ultra-wideband protocol and performing audio and / or image processing according to the multimedia form and outputting the multimedia; In the case of the multimedia playback, the ultra-wideband device of the vehicle using the ultra-wideband wireless communication including a pre-registered ultra-wideband devices selected by the user and the car audio system for transmitting the streaming multimedia in accordance with the ultra-wideband protocol after communication setting Multimedia network system. The method of claim 1, The car audio system, An input unit having a selection key for selecting an ultra-wideband device for transmitting the multimedia; A multimedia multimedia processing unit for processing and outputting multimedia including audio and / or video according to the multimedia reproduction; An ultra-wideband interface unit for transmitting the multimedia by streaming according to the ultra-wideband protocol; The ultra wideband device of the vehicle using the ultra-wideband wireless communication includes a pre-registered ultra-wideband device and a control unit for outputting the multimedia being played back to the ultra-wideband interface unit after communication setting with the ultra wideband devices selected by the user through the input unit. Multimedia network system. The method of claim 1, The pre-registered ultra-wideband device, The multimedia network system of the vehicle using the ultra-wideband wireless communication connected to the speaker of the vehicle to receive and reproduce the audio multimedia received and reproduced in the audio system in accordance with the ultra-wideband protocol to output audible sound through the speaker. The method of claim 3, The ultra-wideband device, An ultra-wideband interface unit for receiving and outputting audio multimedia transmitted from the audio system according to an ultra-wideband protocol; An audio processor connected to the speaker for audio processing the multimedia output from the ultra wideband interface unit and outputting the audio multimedia through the speaker; An ultra-wideband wireless communication including an ultra-wideband controller configured to output audio multimedia received through the ultra-wideband interface to a speaker through the audio processor after performing communication setting according to an ultra-wideband protocol through the audio system and the ultra-wideband interface; Vehicle multimedia network system. The method of claim 1, The selected ultra-wideband device, An ultra-wideband interface unit for receiving and outputting multimedia transmitted from the audio system according to an ultra-wideband protocol; A distribution unit for separating and outputting audio and video from the multimedia; A video processor configured to output an image to an external device connected to the image output port by processing an input image; An audio processing unit having an audio output port and outputting audio to an external device connected to the audio output port by audio processing; After performing the communication setting according to the ultra-wideband protocol through the audio system and the ultra-wideband interface, the multimedia unit received through the ultra-wideband interface is divided into audio and video by the distribution unit, and the corresponding audio and A multimedia network system for a vehicle using ultra-wideband wireless communication including an ultra-wideband controller configured to perform video output. The method of claim 5, The multimedia network system of a vehicle using ultra-wideband wireless communication, characterized in that the external device is a rear seat entertainment system. The method of claim 5, The ultra-wideband device, And a wired interface unit having a port for wired connection with an external device, and performing data communication between the external device connected through the port and the ultra-wideband controller; And the ultra-wideband control unit performs file sharing between the external device and the audio system through the ultra-wideband interface unit, the distribution unit, and the wired interface unit. The method of claim 7, wherein The ultra-wideband device, And a display unit for displaying an operation state of the ultra-wideband device. Determining, by an audio system, whether an event occurs in the audio system or an event from an ultra-wideband device when a multimedia playback event occurs; Transmitting an audio multimedia stream to the first ultra wideband devices after establishing communication with the first ultra wideband devices connected to speakers if the event is an event generated in an audio system; Determining whether the event is caused by a multimedia play request or a multimedia occupancy request when the event is generated from a second ultra-wideband device; If it is determined that the multimedia playback request is based on the communication setting with the second ultra-wideband device, the requested multimedia is played back, the played multimedia is transmitted to the second ultra-wideband device by streaming, and if the multimedia occupancy request is the first; 2. A method of sharing a multimedia of a multimedia network system of a vehicle using ultra-wideband wireless communication, comprising: receiving and playing by streaming after setting up communication with an ultra-wideband device. The method of claim 9, Determining whether an audio system is operating if the event is an event generated from a second ultra-wideband device; And if the audio system is in operation, transmitting a rejection response message to the second ultra-wideband device, and if not, transmitting an accept response message to transmit the multimedia to the second ultra-wideband device. Multimedia sharing method of vehicle multimedia network system using ultra wideband wireless communication.

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