KR20080016255A - Method and system for receiving digital multimedia broadcasting using the user's computer - Google Patents

Abstract

A DMB(Digital Multimedia Broadcasting) receiving system using a user computer is provided to enable the user of a portable DMB receiver to watch, store or edit a DMB program through a personal computer by connecting the DMB receiver directly to the personal computer, without the necessity of additionally purchasing a dedicated DMB receiver to connect the personal computer. A DMB receiving system consists of a portable DMB receiver(100) and a user computer(200). The portable DMB receiver(100) comprises an RF receiving part(110), a signal demodulation part(120), a signal decoding part(130), a coding part(150), and the first transmit/receive interface part(160). The RF receiving part(110) receives and outputs DMB signals of a selected channel. The signal demodulation part(120) demodulates and outputs the DMB signals. The signal decoding part(130) creates a transport stream from the demodulated DMB signals and outputs it. The coding part(150) codes the transport stream according to a certain coding scheme. The first transmit/receive interface part(160) transmits the coded transport stream to the user computer(200).

Description

Method and system for receiving digital multimedia broadcasting using the user's computer

1 is a block diagram showing the configuration of a general DMB receiving apparatus.

2 is a block diagram showing the configuration of a portable DMB receiving apparatus and a user computer according to a preferred embodiment of the present invention.

3 is a flowchart illustrating a digital multimedia broadcasting reception method using a user computer according to a preferred embodiment of the present invention.

4 is a block diagram showing the configuration of a portable DMB receiving apparatus and a user computer according to another exemplary embodiment of the present invention.

The present invention relates to a digital multimedia broadcasting (DMB) receiving system and method, and more particularly, to a method and system for reproducing DMB signals received from a portable DMB terminal such as a DMB phone or a DMB dedicated receiver through a computer. It is about.

Digital Multimedia Broadcasting (DMB), which enables users to watch broadcasts through mobile communication terminals, is emerging as a new concept of next-generation broadcasting that enables users to enjoy high-definition video and CD-level music anytime, anywhere in the mobile. As is widely known, DMB broadcasts are broadly classified into satellite DMB, which transmits via satellite, and terrestrial DMB, which transmits through terrestrial repeaters.

DMB broadcasting can be basically viewed through DMB receiving mobile communication terminals developed to receive DMB broadcasting such as mobile phones, PDAs, and car receivers, but communication terminals (computers, laptops, mobile phones) that do not support DMB reception In the case of a personal portable terminal and a television, a technology for receiving DMB broadcasting has been developed by installing a separate DMB receiver.

1 is a block diagram showing the configuration of a general DMB receiving apparatus. Referring to FIG. 1, the DMB receiving apparatus includes an RF receiver 10, a signal demodulator 20, a signal decoder 30, an image processor 40, a sound processor 60, a display unit 50, and a speaker ( 70).

First, the RF receiver 10 receives a signal of a channel selected by a user from among digital multimedia broadcasting signals (multiplexed broadcasting signals) transmitted from a satellite DMB broadcasting station or a terrestrial DMB broadcasting station, and outputs the signal to the signal demodulation unit 20.

The signal demodulator 20 converts the analog broadcast signal received from the RF receiver 10 into digital, performs OFDM demodulation, and outputs the demodulated signal to the signal decoder 30.

The signal decoder 30 performs convolutional deinterleaving and RS decoding on the signal received from the signal demodulator 20 to generate an MPEG-2 TS stream, and demultiplexes the video signal to decode the video signal according to the H.264 method. The audio signal is output to the image processor 40, and the audio signal is decoded according to the BSAC codec method and output to the sound processor 60.

The image processor 40 processes the image signal input from the signal decoder 30 to display on the display and outputs the image signal to the display unit 50, and the audio processor 60 receives the audio input from the signal decoder 30. The signal is processed to be output through the speaker 70 and output to the speaker 70.

However, such a conventional portable DMB receiving device such as a DMB phone has an inconvenience of viewing because the screen size for displaying a DMB image to a user is very small, about 2 to 4 inches, due to the limitation of the portable device.

Due to such inconvenience, a DMB receiver capable of directly connecting to a computer via USB has been released due to the need to receive DMB broadcasting through a general computer.

However, since the DMB receiver only performs the function of demodulating the DMB broadcast signal and outputting it to a computer without having to reproduce its own DMB broadcast, watching the DMB broadcast while on the move and using the computer in the home or office to perform the DMB broadcast. A user who wishes to watch should provide both a portable DMB receiving apparatus and a computer receiving apparatus, and a user having a portable DMB receiving apparatus must purchase a computer DMB receiving apparatus separately. Therefore, there is a problem that the user has to pay twice.

In addition, the conventional portable DMB receiving device is only portable to reproduce the DMB broadcast in real time due to the limitation of the portable device, that is, the small storage capacity and the performance of the central processing unit. There was a problem that does not provide the same various functions.

The technical problem to be solved by the present invention is to allow a user who purchases a portable DMB receiver to watch a DMB broadcast through a general computer, and to store and edit the DMB broadcast without paying additional costs. The present invention provides a method and apparatus that can receive and edit a DMB broadcast by receiving a DMB signal.

A digital multimedia broadcasting reception system using a user computer of the present invention for achieving the above technical problem, a portable DMB receiving apparatus for encoding and transmitting the TS stream generated by demodulating the DMB broadcast signal of the channel selected by the user according to a predetermined coding scheme. ; And receiving the encoded TS stream, decoding the TS stream according to a decoding method corresponding to the encoding method, and separating and decoding the video compressed signal, the audio compressed signal, and the data compressed signal from the TS stream, respectively, to provide DMB broadcasting to the user. Includes user computer output.

The above-described portable DMB receiving apparatus includes: an RF receiver configured to receive and output a DMB broadcast signal of a channel selected by a user; A signal demodulator for demodulating and outputting a DMB broadcast signal; A signal decoder for generating and outputting a TS stream from the DMB broadcast signal demodulated by the signal demodulator; An encoding unit encoding the TS stream according to a predetermined encoding method; And a first transmission / reception interface unit configured to transmit the encoded TS stream to the user computer according to a predetermined transmission scheme.

The signal decoder may generate a TS stream by performing convolutional deinterleaving and RS decoding on the DMB broadcast signal demodulated by the signal demodulator.

In addition, the signal decoding unit described above is a video compression signal, an audio compression signal, and a data compression signal from the TS stream instead of outputting the TS stream to the encoder when the portable DMB receiving apparatus and the user computer are not in a computer viewing mode. Each can be separated and decoded to output DMB broadcast to the user.

In addition, the above-described portable DMB receiving apparatus, RF receiving unit for receiving and outputting the DMB broadcast signal of the channel selected by the user; A signal demodulator for demodulating the DMB broadcast signal to generate and output a TS stream; A switching unit for outputting a TS stream to either an encoder or a signal decoder according to a user's DMB broadcast viewing mode; An encoding unit encoding the TS stream input from the switching unit according to a predetermined encoding method; A first transmission / reception interface unit for transmitting the encoded TS stream to a user computer according to a predetermined transmission method; And a signal decoder configured to separate and decode the video compressed signal, the audio compressed signal, and the data compressed signal from the TS stream input from the switching unit, and output the DMB broadcast to the user.

In addition, the user computer described above may store and edit the DMB broadcasts output to the user.

On the other hand, digital multimedia broadcasting receiving method using a user computer of the present invention for achieving the above technical problem, the method comprising the steps of (a) receiving and demodulating the DMB broadcast signal of the channel selected by the user portable DMB receiver; (b) a portable DMB receiving apparatus generating a TS stream from the demodulated DMB broadcast signal; (c) the portable DMB receiving apparatus encoding the TS stream according to a predetermined encoding method and transmitting the encoded stream to a user computer; (d) decoding, by the user computer, the TS stream according to a decoding method corresponding to the encoding method; And (e) the user computer separating, decoding and outputting the multimedia signals from the decoded TS stream to the user.

In addition, in step (a), the portable DMB receiving apparatus may receive a channel selection signal from a user computer and receive and demodulate a DMB broadcasting signal of a channel selected by the user.

In addition, in the step (c) described above, in the computer viewing mode for watching the DMB broadcast on the user computer, the TS stream may be encoded according to a predetermined encoding method and transmitted to the user computer.

In addition, in step (c), the portable DMB receiving apparatus may separate the multimedia signals from the TS stream, decode the multimedia signals, and output them to the user when the computer is not in the computer viewing mode.

In addition, the above-described method for receiving digital multimedia broadcasting using a user computer may further include storing and editing a DMB signal output to a user by the user computer.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram showing the configuration of the portable DMB receiving apparatus 100 and the user computer 200 according to an embodiment of the present invention. 2, the portable DMB receiving apparatus 100 may include an RF receiver 110, a signal demodulator 120, a signal decoder 130, an encoder 150, a first transmit / receive interface unit 160, and It is configured to include a control unit.

In addition, the signal demodulator 120 includes an A / D converter 122, an OFDM demodulator 124, and a channel decoder 126, and the signal decoder 130 includes an external decoder 131. ), A switching unit 133, a first demultiplexing unit 135, and a first multimedia decoding unit 137.

Meanwhile, the user computer 200 includes a second transmission / reception interface unit 220, a decoding unit 230, a second demultiplexing unit 240, and a second multimedia decoding unit 250.

However, for convenience of description, components common to the above-described conventional portable DMB receiving apparatus 100 and the DMB receiving apparatus of the present invention, for example, an image processor and an image for processing and displaying a video signal to a user Although not illustrated in FIG. 2, the output unit, the sound processing unit for processing the sound signal, and outputting the sound signal to the user are included in the portable DMB receiving apparatus 100 of the present invention.

First, the function of the portable DMB receiving apparatus 100 will be described.

The RF receiver 110 outputs the DMB signal of the channel selected by the controller among the DMB signals received from the DMB broadcasting station to the signal demodulator 120.

The signal demodulator 120 demodulates the DMB broadcast signal input from the RF receiver 110 and outputs the demodulated DMB broadcast signal to the signal decoder 130. In detail, the DMB broadcast signal input from the RF receiver 110 is input to the A / D converter 122, and the A / D converter 122 receives the analog DMB signal input from the RF receiver 110 as a digital signal. Is converted to and output to the OFDM demodulator 124.

The OFDM demodulator 124 demodulates the signal input from the A / D converter 122 according to the OFDM modulation and demodulation method and outputs the demodulated signal to the channel decoder 126. The channel decoding unit performs time deinterleaving and Viterbi decoding in preparation for an error condition of the OFDM demodulated signal and outputs the signal to the signal decoding unit 130. The signal demodulator 120 may be implemented with a DAB chip.

The signal decoder 130 demultiplexes the DMB signal input from the signal demodulator 120 to separate a video signal, an audio signal, and a data signal, respectively, decode and signal process each of them according to a corresponding codec. Play the DMB broadcast to the user. In addition, in the "computer viewing mode" in which the computer is connected to the portable DMB receiving apparatus 100, the TS stream data generated by the signal decoder 130 is transmitted to the computer.

Specifically, the DMB signal input from the signal demodulator 120 is input to the external decoding unit 131, and performs convolutional deinterleaving and RS decoding on the DMB signal demodulated by the external decoding unit 131 to perform a TS stream. And output the generated TS stream to the switching unit 133.

The switching unit 133 outputs the TS stream to the first demultiplexer 135 or the encoder 150 according to a control signal input to the controller. Specifically, when the computer is not connected to the portable DMB receiver, that is, when the user views the DMB broadcast with the portable DMB receiver, the switching unit 133 first demultiplexes the TS stream such that the DMB broadcast is reproduced by the portable receiver. Output to the unit 135. However, when a computer is connected to the portable DMB receiver, that is, when the user wants to watch DMB broadcasting with the computer, the TS stream is output to the encoder 150 to be transmitted to the computer according to the control signal.

The first demultiplexer 135 demultiplexes the TS stream input from the switching unit 133, and separates the video compressed signal, the audio compressed signal, and the data compressed signal into a multimedia decoder.

The first multimedia decoder 137 is a video decoder that decodes the video compressed signal input from the first demultiplexer 135 according to the H.264 codec, and is input from the first demultiplexer 135 according to the BSAC codec. And an audio decoder for decoding the audio compressed signal, and a data decoder for decoding the data compressed signal according to the BIFS scheme. Each video signal, audio signal, and data signal decoded and output by the first multimedia decoder 137 is output to a user through a display device and a speaker after undergoing a corresponding signal processing.

Meanwhile, the encoder 150 receives the TS stream from the switching unit 133, encodes the TS stream according to a predetermined data encoding method, and outputs the TS stream to the first transmission / reception interface unit 160.

The first transmit / receive interface unit 160 is connected to the second transmit / receive interface unit 220 of the user computer 200 by wire or wirelessly to transmit the encoded TS stream to the user computer 200, and from the user computer 200. Output the input control signal to the controller. The first transceiver interface and the second transceiver interface are wireless, such as Bluetooth, as well as all kinds of wired data transmission / reception interfaces available for mobile phones, such as I / O terminals, earphone jacks, multimedia terminals, IEEE1394, and USB terminals. It may also be implemented as a data transmission and reception interface. Among them, a preferred embodiment of the present invention transmits and receives data between the portable DMB receiving apparatus 100 and the user computer 200 according to the USB method.

As described above, the reason why the portable DMB receiving apparatus 100 encodes the TS stream according to a predetermined encoding method and transmits the TS stream to the user computer 200 is because the DMB broadcasting data is received and reproduced from the portable DMB receiving apparatus 100. This is to allow the playback device that is authorized to play back to the DMB broadcast.

The reproduction apparatus approved for reproduction of DMB broadcast data includes a second control unit 210, a second transmission / reception interface unit 220, a decoding unit 230, a second demultiplexing unit 240 according to the present invention. And the user computer 200 in which the second multimedia decoding unit 250 is installed as a module or in which software implementing the above-described components is installed. In this case, the module or software installed in the DMB playback device implemented as the user computer 200 in the present invention is produced by the same manufacturer as the portable DMB receiving device 100, or is a product of a company that has a license agreement with the manufacturer Will be common.

On the other hand, if the restriction on whether the approval is not applied, the portable DMB receiving apparatus 100 performs the process of encoding the TS stream, the process of decoding the encoded TS stream by the user computer 200, and each of them. The encoder 150 and the decoder 230 may be omitted.

The first control unit 140 not only supports a voice call function, a short message transmission / reception function, various multimedia functions, a wireless Internet function, etc. which are basic functions of the mobile communication terminal, but also the RF receiver 110 and the signal demodulator 120 of the present invention. The control unit performs a function of controlling the signal decoder 130, the encoder 150, and the first transceiving interface unit 160.

The function of each component of the portable DMB receiving apparatus 100 has been described so far. Hereinafter, the components of the user computer 200 related to the functions of the present invention and their functions will be described.

The user computer 200 includes a second transceiver interface 220, a decoder 230, a second demultiplexer 240, a second multimedia decoder 250, and a second controller 210. do. First, the second transmission / reception interface unit 220 outputs a TS stream input from the first transmission / reception interface unit 160 to the decoding unit 230, and outputs a control signal input from the second control unit 210 to the first transmission / reception interface. Output to the unit 160.

The decoding unit 230 decodes the encoded TS stream input from the second transmission / reception interface unit 220 in a manner corresponding to the encoding method used for encoding by the encoding unit 150 to decode the second demultiplexer 240. Will output

The second demultiplexer 240 demultiplexes the TS stream input from the decoder 230 to separate the video compressed signal, the audio compressed signal, and the data compressed signal and output the decoded TS stream to the second multimedia decoder 250, respectively. .

The second multimedia decoder 250 is a video decoder that decodes the video compressed signal input from the second demultiplexer 240 according to the H.264 codec, and is input from the second demultiplexer 240 according to the BSAC codec. And an audio decoder for decoding the audio compressed signal, and a data decoder for decoding the data compressed signal according to the BIFS scheme. Each video signal, audio signal, and data signal decoded and output by the second multimedia decoder 250 is output to a user through a display device, a speaker, etc. after a corresponding signal processing process.

The second controller 210 generates a control signal for controlling the portable DMB receiving apparatus 100 according to a user's input value, and generates a first control signal through the first transmission / reception interface unit 160 and the second transmission / reception interface unit 220. The control unit 140 transmits the control to the portable DMB receiving apparatus 100.

In addition, the second controller 210 controls overall operations of the second transceiver interface 220, the decoder 230, the second demultiplexer 240, and the second multimedia decoder 250. A function of storing and editing DMB broadcasting received from the DMB receiving apparatus 100 is performed. In addition, the second control unit 210 performs a general control operation performed in a computer, such as adjusting the size of the media player window and volume of the speaker displayed to the user.

However, it should be noted that the functional blocks of the user computer 200 shown in FIG. 2 are implemented in software.

3 is a flowchart illustrating a digital multimedia broadcasting reception method using a user computer 200 according to an exemplary embodiment of the present invention.

Referring to FIG. 3, first, a user selects a channel using an input means (not shown) installed in the portable DMB receiving apparatus 100 or an input means (not shown) installed in the user computer 200. The RF receiver 110 receives the DMB signal of the channel selected by the user from the DMB signals received through the antenna according to the control signal input from the first controller 140 and outputs the DMB signal to the signal demodulator 120 (S300). ). In this case, when the user computer 200 and the portable DMB receiving apparatus 100 are connected, when the user selects a channel using an input means of the user computer 200, the second controller 210 selects a channel of the user. Receives a signal and outputs a channel selection signal to the second transmission and reception interface unit 220 to transmit to the first control unit 140 through the first transmission and reception interface unit 160, the first control unit 140 is a second control unit ( The channel selection control signal is generated according to the channel selection signal input from 210 and output to the RF receiver 110.

As described above, the signal demodulator 120 converts the analog DMB signal to digital, performs OFDM demodulation, and then performs channel decoding to output the signal to the signal decoder 130 (S310).

As described above, the signal decoder 130 generates an TS stream by performing external decoding on the DMB signal input from the signal demodulator 120, and outputs the TS stream to the switching unit 133 (S320).

When the switching unit 133 receives the TS stream, the switching unit 133 checks whether a switching control signal for instructing the first control unit 140 to output the TS stream to the user computer 200 is received and presently. Determines whether the DMB broadcast viewing mode is the computer viewing mode, and when the determination result is the computer viewing mode, the switching unit 133 outputs the TS stream to the encoding unit 150. Output to the demultiplexing unit 135 (S330). According to a preferred embodiment of the present invention, when the user connects the user computer 200 to the portable DMB device to watch the DMB broadcast by using the computer, it may be implemented to be set to the computer viewing mode automatically. Therefore, the first control unit 140 or the second control unit 210 may generate the viewing mode setting signal to set the viewing mode.

 In the computer viewing mode, the encoder 150 receives the TS stream from the switching unit 133, encodes the TS stream according to a predetermined data encoding method, and outputs the TS stream to the first transmit / receive interface unit 160 (S340). .

The first transmit / receive interface unit 160 transmits the encoded TS stream to the second transmit / receive interface unit 220 of the user computer 200 via wire or wirelessly (S345).

The second transmission / reception interface unit 220 outputs the TS stream input from the first transmission / reception interface unit 160 to the decoding unit 230, and the decoding unit 230 is input from the second transmission / reception interface unit 220. The encoded TS stream is decoded in a manner corresponding to the encoding method used for encoding by the encoder 150 and output to the second demultiplexer 240 (S350).

The second demultiplexer 240 demultiplexes the TS stream input from the decoder 230 to separate the video compressed signal, the audio compressed signal, and the data compressed signal and output the decoded TS stream to the second multimedia decoder 250, respectively. (S360).

The second multimedia decoder 250 decodes and outputs a video compressed signal input from the second demultiplexer 240 according to the H.264 codec, and is input from the second demultiplexer 240 according to the BSAC codec. The audio compression signal is decoded and output, and the data compression signal is decoded and output according to the BIFS method (S365). As described above, each of the video, audio, and data signals decoded and output by the second multimedia decoder 250 are output to the user through a display device and a speaker after undergoing a corresponding signal processing. .

In addition, the DMB broadcast signal data reproduced to the user is stored internally and edited by the user according to the user's operation (S370).

On the other hand, in the above-described step S330, when the search result is not the computer viewing mode, the second demultiplexer 240 receiving the TS stream from the switching unit 133 demultiplexes the TS stream to compress the video compressed signal and the audio. The signal and the data compression signal are separated and output to the first multimedia decoder 137, respectively (S380).

The first multimedia decoder 137 decodes and outputs a video compressed signal input from the first demultiplexer 135 according to the H.264 codec, and is input from the first demultiplexer 135 according to the BSAC codec. The audio compressed signal is decoded and output, and the data compressed signal is decoded and output according to the BIFS method (S385). As described above, each of the video signal, the audio signal, and the data signal decoded and output by the first multimedia decoder 137 undergoes a corresponding signal processing and then displays a display device of the portable DMB receiving apparatus 100; It is output to the user through a speaker.

On the other hand, since the configuration of the portable DMB receiving apparatus 100 according to the preferred embodiment of the present invention shown in FIG. 2 is classified according to a function performed by each component, if the DMB broadcast signal is processed according to the same operation flow, FIG. It may be configured differently than shown in FIG. 2. That is, the signal demodulator 120 of FIG. 2 has been described as being configured to include the A / D converter 122, the OFDM demodulator 124, and the channel decoder 126 for convenience, and the signal decoder 130 ) Has been described as including an external decoding unit 131, a switching unit 133, a first demultiplexing unit 135, and a first multimedia decoding unit 137.

However, as shown in FIG. 4, which is a block diagram showing a configuration according to another embodiment of the present invention, the portable DMB receiving apparatus 100 according to another exemplary embodiment of the present invention may include an RF receiver 110 and a signal recovery unit. The control unit 120-2, the switching unit 133, the signal decoding unit 130-2, the first control unit 140, the encoding unit 150, and the first transmission / reception interface unit 160 may be implemented. The signal demodulator 120-2 includes an A / D converter 122, an OFDM demodulator 124, a channel decoder 126, and an external decoder 131, and the signal decoder 130. 2 may be configured to include a first demultiplexer 135 and a first multimedia decoder 137. In this case, the RF receiver 110, the A / D converter 122, the OFDM demodulator 124, the channel decoder 126, the external decoder 131, the switching unit 133, the first demultiplexer The function of the 135 and the first multimedia decoding unit 137 is the same as described above, and is represented by the same reference numerals because there is a difference only in how each component is combined and configured as a chip, and the description of the function is omitted. do.

In addition, it should be noted that the user computer of the present invention is not limited to a general office computer, but is a concept that includes a general television as long as it is designed to perform the functions of the above-described user computer.

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, which are also implemented in the form of a carrier wave (for example, transmission over the Internet). It also includes. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

As described above, according to the present invention, a consumer who purchases a portable DMB receiving device, such as a DMB phone, directly connects his portable DMB receiving device with his general computer without additionally purchasing a dedicated DMB receiving device for connecting to the computer. Thus, the DMB broadcast can be viewed through a computer, and the DMB broadcast can be stored and edited.

Claims (12)

(a) receiving and demodulating the DMB broadcast signal of a channel selected by the user by the portable DMB receiving apparatus; (b) the portable DMB receiving apparatus generating a TS stream from the demodulated DMB broadcast signal; (c) the portable DMB receiving apparatus encoding the TS stream according to a predetermined encoding method and transmitting the encoded TS stream to a user computer; (d) the user computer decoding the TS stream according to a decoding method corresponding to the encoding method; And and (e) separating and decoding the multimedia signals from the decoded TS stream by the user computer and outputting the multimedia signals to the user. The method of claim 1, wherein step (a) And the portable DMB receiving device receives a channel selection signal from the user computer and receives and demodulates the DMB broadcasting signal of the channel selected by the user. The method of claim 1, wherein step (c) And in the computer viewing mode for viewing the DMB broadcast on the user computer, the TS stream is encoded according to a predetermined encoding method and transmitted to the user computer. The method of claim 3, wherein step (c) The portable DMB receiving apparatus separates and decodes the multimedia signals from the TS stream and outputs the decoded multimedia signals to the user when not in the computer viewing mode. The method of claim 1, And storing and editing, by the user computer, the DMB signal outputted to the user. A recording medium in which a method for receiving digital multimedia broadcasting using a user computer according to any one of claims 1 to 5 can be read by a computer, and recorded as executable program code. A portable DMB receiving apparatus for encoding and transmitting a TS stream generated by demodulating a DMB broadcast signal of a channel selected by a user according to a predetermined encoding method; And Receive the encoded TS stream, decode the TS stream according to a decoding scheme corresponding to the encoding scheme, and separate and decode a video compressed signal, an audio compressed signal, and a data compressed signal from the TS stream to a user. And a user computer for outputting DMB broadcasting. The portable DMB receiving apparatus of claim 7, An RF receiver configured to receive and output a DMB broadcast signal of a channel selected by a user; A signal demodulator for demodulating and outputting the DMB broadcast signal; A signal decoder configured to generate and output a TS stream from the DMB broadcast signal demodulated by the signal demodulator; An encoder which encodes the TS stream according to a predetermined encoding method; And And a first transmission / reception interface unit configured to transmit the encoded TS stream to a user computer according to a predetermined transmission method. The method of claim 8, wherein the signal decoder And generating the TS stream by performing convolution deinterleaving and RS decoding on the DMB broadcast signal demodulated by the signal demodulator. The method of claim 8, wherein the signal decoder When the portable DMB receiving device and the user computer are not connected to the computer viewing mode, the video compressed signal, the audio compressed signal, and the data compressed signal are respectively separated from the TS stream instead of outputting the TS stream to the encoder. And decoding and outputting the DMB broadcast to the user. The portable DMB receiving apparatus of claim 7, An RF receiver configured to receive and output a DMB broadcast signal of a channel selected by a user; A signal demodulator for demodulating the DMB broadcast signal to generate and output a TS stream; A switching unit for outputting a TS stream to either an encoder or a signal decoder according to a user's DMB broadcast viewing mode; The encoding unit encoding the TS stream input from the switching unit according to a predetermined encoding method; A first transmission / reception interface unit for transmitting the encoded TS stream to a user computer according to a predetermined transmission method; And And a signal decoder which separates and decodes a video compressed signal, an audio compressed signal, and a data compressed signal from the TS stream input from the switching unit, and outputs a DMB broadcast to a user. . 12. The system of any one of claims 7 to 11, wherein the user computer And storing and editing the DMB broadcast outputted to the user.

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