KR101058814B1 - Mobile storage device capable of transmitting and receiving multimedia data - Google Patents

Abstract

A mobile storage device capable of transmitting and receiving multimedia data is provided. According to the present invention, in a mobile storage device for storing data, a USB communication unit capable of receiving multimedia data through a USB communication method, an AV that can output multimedia data received through the USB communication unit through a display or a speaker An AV data processor for converting into data, an AV data compression unit for compressing AV data, and a wireless communication unit capable of wirelessly transmitting AV data. As a result, it supports HD, consumes less power, and can be used conveniently by the viewer.

Multi Media, USB, Mobile, Storage

Description

Mobile storage apparatus capable of transmitting and receiving multi-media data

The present invention relates to a mobile storage device capable of transmitting and receiving multimedia data, and more particularly, to a mobile storage device that supports HD, consumes less power, and can be used conveniently by a viewer.

Techniques for improving the convenience to viewers using multimedia devices using various devices have been developed.

In particular, the technology of receiving data transmitted wirelessly from the set-top box to the viewer has been an issue, but any conventional device does not support HD, is high in power consumption, high in manufacturing cost, or in actual use. It is difficult for the viewer to use it conveniently.

An object of the present invention is to provide a transmitter-type mobile storage device that supports HD, consumes less power, and can be used conveniently by a viewer.

On the other hand, an object of the present invention is to provide a receiver-type mobile storage device that supports HD, low power consumption, and can be conveniently used by viewers.

In addition, an object of the present invention is to provide a transmission and reception combined mobile storage device that supports HD, low power consumption, and can be conveniently used by a viewer.

According to an aspect of the present invention, there is provided a transmitter-type mobile storage device comprising: a USB communication unit capable of receiving multimedia data through a USB communication method; An AV data processor for converting multimedia data received through the USB communication unit into AV data that can be output through a display or a speaker; An AV data compression unit for compressing AV data; And a wireless communication unit capable of wirelessly transmitting AV data.

In addition, the transmitter-type mobile storage device, AV data communication unit that can receive the AV data; The AV data compression unit may further include: compressing the AV data changed by the AV data processor or the AV signal received by the AV data communication unit. The wireless communication unit may compress the AV data compressed by the AV data compression unit. Can be sent.

The transmitter-type mobile storage device may further include an IR interface unit for receiving a channel change signal from a user.

The wireless communication unit may also receive a channel change signal.

According to an aspect of the present invention, there is provided a receiver-type mobile storage device, comprising: a USB communication unit capable of outputting or receiving data through a USB communication method; A wireless communication unit capable of wirelessly receiving the compressed AV data; An AV data compression unit which decompresses the AV data received through the wireless communication unit; And an AV data communication unit for outputting the decompressed AV data to the display device. It may include.

The receiver-type mobile storage device may further include an IR interface unit for receiving a channel change signal from a user.

In accordance with another aspect of the present invention, there is provided a transceiving combined mobile storage device, comprising: a USB communication unit capable of receiving or outputting multimedia data through a USB communication method; An AV data processor for converting multimedia data received through the USB communication unit into AV data that can be output through a display or a speaker; An AV data communication unit capable of receiving or outputting AV data; An AV data compression and decompression unit for compressing the AV data or decompressing the compressed AV data; And a wireless communication unit capable of wirelessly transmitting or receiving AV data.

On the other hand, the combined transmission and reception mobile storage device may further include an IR interface unit for receiving a channel change signal from the user.

The wireless communication unit may also receive a channel change signal.

On the other hand, the dual transmission and reception type mobile storage device further includes an operation mode selection user interface unit that can be selected from the user of the transmitter-type operation mode and the receiver-type operation mode; when the transmitter-type operation mode is selected And converting the multimedia data input through the USB communication unit into AV data that the AV data processor can output through a display or a speaker. The AV data compression unit compresses the converted AV data, The communication unit may transmit the compressed AV data to the outside.

In addition, the dual-transmitting and receiving mobile storage device further includes an operation mode selection user interface unit capable of selecting one of a transmitter type operation mode and a receiver type operation mode, and when the transmitter type operation mode is selected, The AV data compression unit compresses the AV data input through the AV data communication unit, and the wireless communication unit may transmit the compressed AV data to the outside.

When the receiver type operation mode is selected, the AV data compression and decompression unit decompresses the compressed AV data received through the wireless communication unit, and the AV data communication unit or the USB communication unit decompresses the decompressed AV data. You can output to the outside.

On the other hand, the combined transmission and reception mobile storage device further includes a control unit for automatically recognizing the operation mode, in the transmitter type operation mode, the AV data compression unit compresses the AV data input through the AV data communication unit and The wireless communication unit transmits the compressed AV data to the outside, and in the receiver type operation mode, the AV data compression and decompression unit decompresses the compressed AV data received through the wireless communication unit, and the AV data. The communication unit or the USB communication unit may output the decompressed AV data to the outside.

As described above, according to the present invention, HD is supported, power consumption is low, and the viewer can use it conveniently. In particular, by using a mobile storage device called as a USB storage device, it is possible to watch the multimedia data, it is possible to maximize the convenience of the user by not needing a separate device in the home or office. In particular, a mobile storage device capable of both transmitting and receiving can achieve both the purpose of data storage and multimedia data viewing without the need for additional equipment.

In addition, according to the present invention, it is possible to provide multimedia data to viewers at the HD level.

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

1 is a view provided to explain a system in which a mobile storage device according to an embodiment of the present invention is used.

Referring to FIG. 1, a system in which the mobile storage device is used includes a device 1 (hereinafter, referred to as a source device), a transmitter type mobile storage device 3, a receiver type mobile storage device 5a, which provides multimedia data. 5b), and display devices 9a and 9b.

The source device 1 is a device for providing multimedia data, and may be, for example, a computer such as a set top box or a PC. The source device 1 can provide multimedia files or AV data.

The transmitter-type mobile storage device 3 receives the multimedia data from the source device 1 and transmits the multimedia data to the receiver-type mobile storage devices 5a and 5b, respectively.

As used herein, the term "multi-media data" is used to mean data related to video or data related to audio or data related to video and audio, and may be output in the form of a file or audio or video ( AV data).

The term "AV data" refers to multimedia data in a form that can be output as video or audio.

In addition, the term "multimedia data file" means data related to video or audio, which is in the form of a file, and such a multimedia file cannot be directly output to a monitor or a speaker, and is converted into the form of AV data. Data that can then be output to a monitor or speaker.

 The transmitter-type mobile storage device 3 according to an embodiment of the present invention converts the multimedia file into AV data when the multimedia file is input (or received) from the source device 1, and compresses the converted AV data. The receiver-type mobile storage 5a, 5b.

The transmitter-type mobile storage device 3 according to another embodiment of the present invention compresses the received AV data when receiving AV data from the source device 1, and then receives the receiver-type mobile storage devices 5a and 5b. To send.

The transmitter-type mobile storage device 3 according to another embodiment of the present invention converts the multimedia file into AV data when the multimedia file is input from the source device 1, compresses the converted AV data, and then receives the receiver type. When the AV data is input from the source device 1, the AV data is compressed and then transmitted to the receiver-type mobile storage devices 5a and 5b. That is, in the present embodiment, the transmitter-type mobile storage device 3 may distinguish whether the data received from the source device 1 is AV data or a multimedia file, and perform an operation according to the result of the classification. have.

The receiver-type mobile storage devices 5a and 5b decompress AV data received from the transmitter-type mobile storage device 3 and output them to the display devices M1 and M2 9a and 9b.

Hereinafter, operations of the transmitter-type mobile storage device and the receiver-type mobile storage device will be described in more detail.

2 is a functional block diagram of a transmitter-type mobile storage device according to an embodiment of the present invention.

2, the transmitter-type mobile storage device 200 according to an embodiment of the present invention, USB connector 201, USB communication unit 203, data storage unit 205, AV data processor 207, An AV data compressor 209, a wireless communication unit 211, a control unit 213, and a connection unit 202 are included.

The USB connector 201 provides a physical interface for USB (Universal Serial Bus) communication.

The USB communication unit 203 may receive or transmit a multimedia data file in a USB communication method.

The data storage unit 205 may store a program or data necessary for operating the transmitter-type mobile storage device, and may store data input (or received) through the USB communication unit 203. In FIG. 2, the data storage unit 205 is illustrated as one, but it may be configured to have two or more data storage units. In such a case, data such as a program may be distinguished from data input through the USB communication unit 203. Can be configured to save.

The AV data processor 207 may convert the multimedia data received through the USB communication unit 203 into AV data that can be output through a display or a speaker.

The AV data compressor 213 may compress AV data. Preferably, the AV data compression unit 213 can compress using a compression method such as H.264.

The AV data compression unit 213 according to an embodiment of the present invention receives the AV data output from the AV data processor 207, converts the received AV data into an analog form, and converts the converted analog data into digital data. And compress it using the H.264 compressor method.

The radio communication unit 211 can transmit AV data wirelessly.

The control unit 213 controls at least one of the above-described components (USB connector, USB communication unit, data storage unit, AV data processor, AV data compression unit, wireless communication unit), so that the above-described first function of each component To make it work.

When the multimedia data is input through the USB connector 201, the controller 213 controls the AV data processor 207 to convert the AV data into AV data, and the AV data compression unit ( 209 and the wireless communication unit 211 are respectively controlled to compress and transmit AV data wirelessly.

According to another embodiment of the present invention, when the controller 213 receives multimedia data through the USB connector 201 and receives a command from the outside to display such multimedia data, the controller 213 receives the AV data processor 207. The control unit converts the AV data into AV data, and controls the AV data compression unit 209 and the wireless communication unit 211 to compress and transmit the AV data wirelessly.

The command to display the multimedia data may be input together with the multimedia data through, for example, the USB connector 201. Alternatively, although not shown in FIG. 2, it is possible by adding a user interface unit (not shown) that can directly receive a command to display multimedia data from a user. When the user receives a command to display the multimedia data through the user interface unit (not shown), the controller 213 may perform the above-described control operations.

The connection 202 is provided for data input or output between each component. Although the connection part 202 shown in FIG. 2 is implemented in a bus form, this is an exemplary configuration, and of course, the connection part 202 may be configured in a manner of being directly connected between the interacting components.

3 is a functional block diagram of a transmitter-type mobile storage device according to another embodiment of the present invention.

Referring to FIG. 3, the transmitter-type mobile storage device 300 according to another embodiment of the present invention may include a USB connector 301, a USB communication unit 303, a data storage unit 305, an AV data processor 307, An AV data compressor 309, a wireless communication unit 311, a control unit 313, a connection unit 302, an AV data communication unit 315, and an AV connector 317 are included.

3 is different from the embodiment of FIG. 2 in that the AV data communication unit 315 and the AV data connector 317 are additionally included.

The AV data communication unit 315 will be mainly described for the function performed by the addition of the AV data connector 317, and other components not described in FIG. 3 are assigned to the components of the embodiment of FIG. Since and function are the same, please refer to the description of FIG.

The AV connector 317 provides a physical interface for receiving or outputting AV data. The AV connector 317 includes at least one of, for example, a D-Sub terminal, an S video terminal, component terminals R, G, and B, and a composite terminal.

The AV data communication unit 315 may transmit or receive AV data.

When the multimedia data is input through the USB connector 301, the controller 313 controls the AV data processor 307 to convert the AV data into AV data, and the AV data compression unit 309. ) And the wireless communication unit 311, respectively, to compress and transmit the AV data wirelessly.

According to another embodiment of the present invention, when the controller 313 receives multimedia data through the USB connector 301 and receives a command to display such multimedia data from the outside, the controller 313 receives the AV data processor 307. The control unit converts the AV data into AV data, and controls the AV data compression unit 309 and the wireless communication unit 311 to compress and transmit the AV data wirelessly.

When the AV data is input through the AV connector 317, the control unit 313 according to another embodiment of the present invention controls the AV data compression unit 309 and the wireless communication unit 311 to compress the AV data. Transmit wirelessly.

Preferably, the controller 313 determines whether multimedia data is input through the USB connector 301 and whether AV data is input through the AV connector 317 to perform the above-described operation. do.

According to another embodiment of the present invention, the control unit 313 receives the multimedia data through the USB connector 301 or the AV data through the AV connector 317, and externally issues a command to display such multimedia data. When received from the AV data processor 307, the AV data compression unit 309, and the wireless communication unit 311, respectively, it is possible to compress and transmit the AV data wirelessly.

The command to display the multimedia data may be input together with the multimedia data through, for example, the USB connector 301 or the AV connector 317. Alternatively, although not shown in FIG. 3, it is possible by adding a user interface unit (not shown) that can directly receive a command to display multimedia data or AV data from a user. When the user receives a command to display the multimedia data through the user interface unit (not shown), the controller 313 may perform the control operations as described above.

For convenience of description, in the embodiments described below, the control unit may be configured to adopt user interface units for receiving a command to display the multimedia data or to receive the multimedia data or the AV data together. It is possible to mention in advance that it is possible, even if not explicitly stated.

4 is a functional block diagram of a receiver-type mobile storage device according to an embodiment of the present invention.

4, the receiver-type mobile storage device 400 according to an embodiment of the present invention is a USB connector 401, USB communication unit 403, data storage unit 405, AV data compressor 419, wireless The communication unit 411, a control unit 413, a connection unit 402, an AV connector 417, and an AV data communication unit 415 are included.

The USB connector 401 provides a physical interface for USB (Universal Serial Bus) communication.

The USB communication unit 403 may receive or transmit a multimedia data file in a USB communication method.

The data storage unit 405 stores a program or data necessary for the receiver-type mobile storage device to operate, and may store data input (or received) through the USB communication unit 403. In FIG. 4, the data storage unit 405 is illustrated as one, but it may be configured to have two or more data storage units. In such a case, data such as a program and data input through the USB communication unit 403 may be distinguished. Can be configured to save.

The AV data decompression unit 419 may decompress the compressed AV data. Preferably, the AV data decompression unit 419 can decompress using a decompression technique such as H.264.

The AV data decompression unit 419 according to an embodiment of the present invention decompresses the data compressed by the H.264 compressor method, and converts the decompressed data into analog AV data.

The AV data communication unit 415 can transmit the AV data in the analog form decompressed by the AV data decompression unit 419 to the outside via the AV connector 417. Here, the outside may be a display device such as a monitor.

The wireless communication unit 411 may wirelessly receive the compressed AV data.

The control unit 413 controls at least one of the above-described components (USB connector, USB communication unit, data storage unit, AV data decompression unit, wireless communication unit, AV connector, AV data communication unit), The above functions can be exerted.

When the AV data compressed through the wireless communication unit 411 is received, the control unit 413 controls the AV data decompression unit 419 to decompress the AV data, and the AV data communication unit. Each of the 415 and the AV connector 417 is controlled and output to the outside.

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FIG. 5 is a functional block diagram of a dual transmit / receive mobile storage device according to an embodiment of the present invention.

Referring to FIG. 5, a dual transmit / receive mobile storage device 500 according to an embodiment of the present invention may include a USB connector 501, a USB communication unit 503, a data storage unit 505, and an AV data processor 507. And an AV data compression and decompression unit 521, a wireless communication unit 511, a control unit 513, a connection unit 502, a user interface unit 523, an AV connector 517, and an AV data communication unit 515. do.

The USB connector 501 provides a physical interface capable of Universal Serial Bus (USB) communication.

The USB communication unit 503 may receive or transmit a multimedia data file in a USB communication method.

The data storage unit 505 may store a program or data necessary for operating the dual transmission / reception type mobile storage device 500, and may store data input (or received) through the USB communication unit 503. Although one data storage unit 505 is shown in FIG. 5, the data storage unit 505 may be configured to have two or more data storage units. In this case, data such as a program, a USB communication unit 503, a wireless communication unit 511, and the like may be configured. It can be configured to classify and save the data input through it.

The AV data compression and decompression unit 521 may i) decompress the compressed AV data, or ii) compress the AV data. Preferably, the AV data compression and decompression unit 521 may compress or decompress using a technique such as H.264.

In the decompression operation, the AV data compression and decompression unit 521 decompresses the compressed data by the H.264 technique, and converts the decompressed data into analog AV data. I can convert it. On the other hand, the AV data compression and decompression unit 521 may convert the data into an analog form and then digitize it again and compress it using the H.264 technique during the compression operation.

The radio communication unit 511 may wirelessly receive or transmit the compressed AV data.

The control unit 513 controls at least one of the above-described components (USB connector, USB communication unit, data storage unit, AV data compression and decompression unit, wireless communication unit, AV data processor, user interface unit), It is possible to perform the above-described functions of the components.

The user interface unit 523 provides a user interface unit to be selected by the user to operate as either a transmitter type mobile storage device or a receiver type mobile storage device. For example, the user interface 523 can be configured as a switch.

The operation in the case where it is selected to operate as a receiver type mobile storage device through the user interface unit 523 will first be described.

When the control unit 513 is selected to operate as a receiver type mobile storage device, and when the compressed AV data is received through the wireless communication unit 511, the control unit 513 controls the AV data compression and decompression unit 519 to compress the AV data. Then, the AV data communication unit 515 and the AV connector 517 are controlled to output to the outside.

Now, an operation in the case where it is selected to operate as a transmitter-type mobile storage device through the user interface unit 523 will be described first.

In this case, when the multimedia data is input through the USB connector 501, the control unit 513 controls the AV data processor 507 to convert the AV data into AV data, and the AV data compression and decompression unit 521 and the wireless device. Each of the communication units 511 is controlled to compress AV data and wirelessly transmit the AV data.

Although the embodiment of FIG. 5 is provided with a user interface unit 523 that can select an operation mode separately, a configuration without the user interface unit 523 is also possible. That is, it is also possible to configure the control unit 513 to select the operation mode by itself, instead of receiving the operation mode from the user.

For example, the control unit 513 controls i) other components to operate as a receiver type mobile storage device when i) compressed AV data is received by the wireless communication unit 511, and ii) the AV data communication unit 515. Control other components to operate as a transmitter-type mobile storage device when AV data is received from the device, and iii) control other components to act as a transmitter-type mobile storage device when AV data is received from the USB communication unit 503. Can be.

6 is a functional block diagram of a receiver-type mobile storage device according to another embodiment of the present invention.

Referring to FIG. 6, a receiver-type mobile storage device 600 according to an embodiment of the present invention may include a USB connector 601, a USB communication unit 603, a data storage unit 605, an AV data compressor 619, and a wireless device. The communication unit 611, a control unit 613, a connection unit 602, an AV connector 617, an AV data communication unit 615, and an IR interface unit 625 are included.

Comparing the embodiment of FIG. 6 with the embodiment of FIG. 4, the only difference is that it further includes an IR interface unit 625. Therefore, the description of the components that perform the same function will be described with reference to FIG. 4, and only the functions of the IR interface unit 625 and the control unit 613 will be described.

The IR interface unit 625 may receive a signal (ie, an infrared ray) including a user's command from the outside (for example, a remote controller capable of changing a channel with infrared rays). When a user command is input through the IR interface unit 625, the controller 625 controls each component in response to the user command.

There can be many kinds of user commands, and the channel change is a typical example. A description related to the channel change will be described in detail with reference to FIG. 8.

7 is a functional block diagram of a dual-send and mobile mobile storage device according to another embodiment of the present invention.

Referring to FIG. 7, a dual transmit / receive mobile storage device 700 according to an embodiment of the present invention may include a USB connector 701, a USB communication unit 703, a data storage unit 705, and AV data compression and decompression unit. 721, wireless communication unit 711, control unit 713, connection unit 702, AV connector 717, AV data communication unit 715, AV data processor 707, IR interface unit 725, and operation mode A selection user interface 723 is included.

Comparing the embodiment of FIG. 7 with the embodiment of FIG. 5, the only difference is that it further includes an IR interface unit 725. Therefore, the description of the components that perform the same function will be described with reference to FIG. 5, and only the functions of the IR interface unit 725 and the controller 713 will be described.

The IR interface unit 725 may receive a signal (ie, an infrared ray) including a user's command from the outside (for example, a remote controller capable of changing a channel with infrared rays). When a user's command is input through the IR interface unit 725, the controller 725 controls each component in response to the user's command.

8 is a view provided to explain a channel change function according to an embodiment of the present invention.

Referring to FIG. 8, a system in which the mobile storage device is used includes a source device S for providing multimedia data, a transmitter type mobile storage device TX, a receiver type mobile storage device RX 1 and RX 2, and a display. Devices (M1, M2) and remote control (C).

The channel change operation may be made like the numbers shown in FIG.

① The receiver type mobile storage device RX1 (hereinafter referred to as "RX1") receives a channel change command from the remote controller (C).

② RX1 sends a channel change command to transmitter type mobile storage device (TX) (hereinafter referred to as "TX").

③ TX sends channel change command to source device.

④, ⑤ The source device changes the channel by operating the tuner by the channel change command and transmits the changed channel data to TX.

⑥ TX transmits changed channel data to RX1 and RX2.

⑦ RX1 and RX2 transmit the changed channel data to display device M1 and M2 respectively.

In order to change the channel, each control unit of RX1, RX2, TX is operated.

For example, when the channel change command is received through the IR interface unit, the controller of RX1 transmits the channel change command to the TX through the wireless communication unit. The control unit of TX transmits the received channel change command to the source device when the channel change command is received through the wireless communication unit.

In the embodiments described above, the mobile transceiver for both transmission and reception can be used as either a receiver type mobile storage device or a transmitter type mobile storage device.

In addition, in the above-described embodiment, although the AV data processor, the AV data compression unit, the AV data decompression unit, and the AV data compression and decompression unit are each illustrated as separate functional blocks, these components are integrated into one functional block. It may be implemented.

On the other hand, the AV data processor may include the functions of a graphics card and a sound card, which are commonly referred to.

While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. 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 view provided to explain a system using a mobile storage device according to an embodiment of the present invention,

2 is a functional block diagram of a transmitter-type mobile storage device according to an embodiment of the present invention,

3 is a functional block diagram of a transmitter-type mobile storage device according to another embodiment of the present invention,

4 is a functional block diagram of a receiver-type mobile storage device according to an embodiment of the present invention,

5 is a functional block diagram of a dual-send and mobile mobile storage device according to an embodiment of the present invention.

6 is a functional block diagram of a receiver-type mobile storage device according to another embodiment of the present invention.

7 is a functional block diagram of a transmission and reception combined mobile storage device according to another embodiment of the present invention, and

8 is a view provided to explain a channel change function according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: set top box

3: Transmitter-type removable storage device

5a. 5b: Receiver type portable storage device

9a, 9b: monitor

Claims (13)

In the transmitter-type mobile storage device for transmitting data, The transmitter-type mobile storage device may be detachably connected to a source device that provides multimedia data to a display device. The transmitter-type mobile storage device is: A USB communication unit for receiving the multimedia data from the source device through a USB communication method; An AV data processor for converting multimedia data received through the USB communication unit into AV data that can be output through a display or a speaker; An AV data compression unit for compressing AV data; And And a wireless communication unit capable of wirelessly transmitting AV data, wherein the multimedia data is wirelessly provided from the source device to the display device. The method of claim 1, An AV data communication unit capable of receiving AV data; More, The AV data compression unit compresses the AV data changed by the AV data processor or the AV signal received by the AV data communication unit, The wireless communication unit transmits the AV data compressed by the AV data compression unit. The method of claim 1, And an IR interface unit for receiving a channel change signal from a user. The method of claim 1, The wireless communication unit, the transmitter-type mobile storage device, characterized in that for receiving a channel change signal. A receiver type mobile storage device for receiving data, The receiver-type mobile storage device may be detachably connected to a display device for displaying multimedia data. The receiver-type mobile storage device is: A USB communication unit capable of outputting or receiving data in a USB communication method; A wireless communication unit capable of wirelessly receiving the compressed AV data from a source device providing the compressed AV data; An AV data decompression unit configured to decompress the compressed AV data received through the wireless communication unit; And And an AV data communication unit for outputting the decompressed AV data to the display device. The multimedia data is wirelessly provided from the source device to the display device. The method of claim 5, And an IR interface unit for receiving a channel change signal from a user. In the transmission and reception type mobile storage device for transmitting and receiving data, The mobile storage device may be detachably connected to any one of a source device for providing multimedia data to a display device or the display device. The mobile storage device is: A USB communication unit for receiving or outputting the multimedia data in a USB communication method; An AV data processor for converting multimedia data received from the source device through the USB communication unit into AV data that can be output through a display or a speaker; An AV data communication unit configured to receive AV data from the source device or output the AV data to the display device; An AV data compression and decompression unit for compressing the AV data or decompressing the compressed AV data; A wireless communication unit capable of wirelessly transmitting or receiving AV data to or from the display apparatus; And And an operation mode selector configured to select one of a transmitter type operation mode and a receiver type operation mode, wherein the multimedia data is wirelessly provided from the source device to the display device. The method of claim 7, wherein Transmitting and receiving combined mobile storage device further comprising; an IR interface unit for receiving a channel change signal from the user. The method of claim 7, wherein The wireless communication unit, the transmission and reception combined mobile storage device, characterized in that also for receiving a channel change signal. The method of claim 7, wherein The operation mode selection unit may be selected from the user of the transmitter type operation mode and the receiver type operation mode, When the Transmitter Type Operation Mode is selected, The multimedia data input through the USB communication unit is converted into AV data that the AV data processor can output through a display or a speaker, and the AV data compression unit compresses the converted AV data, and the wireless communication unit Transmitting and receiving combined mobile storage device characterized in that for transmitting the compressed AV data to the outside. The method of claim 7, wherein The operation mode selection unit may be selected from the user of the transmitter type operation mode and the receiver type operation mode, When the Transmitter Type Operation Mode is selected, And the AV data compression unit compresses the AV data input through the AV data communication unit, and the wireless communication unit transmits the compressed AV data to the outside. The method of claim 10, When the receiver type operation mode is selected, The AV data compression and decompression unit decompresses the compressed AV data received through the wireless communication unit, and the AV data communication unit or the USB communication unit outputs the decompressed AV data to the outside. Mobile storage. The method of claim 7, wherein The operation mode selection unit may automatically recognize the operation mode, In the transmitter mode of operation, The AV data compression unit compresses the AV data input through the AV data communication unit, the wireless communication unit transmits the compressed AV data to the outside, In receiver mode of operation, The AV data compression and decompression unit decompresses the compressed AV data received through the wireless communication unit, and the AV data communication unit or the USB communication unit outputs the decompressed AV data to the outside. Mobile storage.

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