KR100439231B1 - transmission system of digital TV using an INTERNET and controlling method therefore - Google Patents

Abstract

The present invention is a digital television broadcasting network transmission system, the transmission unit for converting and outputting the digital broadcast signal to a signal standard for transmission, and converts the transmission signal output from the transmission unit to the Internet transmission signal to the transmission station transmission apparatus via the Internet A broadcasting station transmission device comprising an Internet transmission signal conversion device unit for transmitting; A digital broadcast signal processing unit for restoring and outputting an internet transmission signal input through the Internet from the internet transmission signal conversion unit of the broadcasting station transmission device to a digital broadcast signal, and modulating the digital broadcast signal input from the digital broadcast signal output processing unit Transmission system and control method of digital television using the Internet, comprising a transmitter transmission device including a modulator for transmitting a radio wave through an antenna and generating a synchronous clock signal therein and providing the synchronous clock signal as the synchronous clock signal of the digital broadcasting transmission signal processor. To provide.

As described above, the present invention converts and transmits a digital broadcast signal to an Internet transmission signal using the Internet established between a broadcasting station and a transmission station, and restores it to a digital broadcast signal and transmits it over the air to separate the broadcast signal. Since the digital broadcasting signal is transmitted using the existing infrastructure without the need for installing expensive transmission equipment, the installation cost of the digital television transmission network can be considerably reduced.

Description

Transmission system of digital TV using an INTERNET and controlling method therefore}

The present invention relates to a digital television transmission system using the Internet and a control method thereof. In particular, the digital broadcasting signal is transmitted by using the existing infrastructure as it is by transmitting the digital broadcasting signal using the Internet established between a broadcasting station and a transmitting station. The present invention relates to a transmission system of a digital television using the Internet for transmitting a digital camera and a control method thereof.

In general, digital broadcasting refers to a television broadcast that compresses and transmits a television signal in a digital form in which an information signal is encoded and recorded. Conventional analog television broadcasting had to carry only one image on one radio wave, and audio had to be transmitted on another radio wave. On the other hand, the digital broadcasting as described above can carry a plurality of images or audio in one radio wave, and can compress information without degrading the quality. Therefore, 4 to 8 channels in the frequency band of the conventional analog broadcasting channel Can be set. In addition, such digital broadcasting is an interactive system that can easily control information using a computer and can also transmit information ordered.

However, the above-mentioned digital broadcasting cannot directly transmit broadcasting signals produced by broadcasting stations to digital TV receivers scattered in unspecified multiple areas of a long distance. A transmitter station must be installed. At this time, a transmission line is connected between the broadcasting station and the transmission station, and transmission equipment is installed therebetween to transmit a carrier signal.

Then, referring to FIG. 1, a digital broadcasting transmission system using the conventional transmission line as described above, the transmission system as described above is a broadcasting station 70 for producing and transmitting a digital broadcasting signal, the broadcasting station 70 and the transmission line 69 Can be divided into a transmission station 71 for transmitting the digital broadcast signal inputted by the airwaves.

The broadcasting station compresses and outputs a broadcast signal generator 72 for generating a drama, news, or other information signal as a digital broadcast signal, and a video signal of a digital broadcast signal input from the broadcast signal generator 72. A digital video signal processing block 73, a digital audio signal processing block 74 for compressing and outputting an audio signal of a digital broadcast signal input from the broadcast signal generator 72, and the digital video / audio signal processing A service multiplex block 75 which synthesizes and outputs additional signals including control signals to the compressed video / audio signals input from blocks 73 and 74, respectively, and outputs from the service multiplex block 75; Converted digital broadcast signal into SMPTE 310M, a signal standard for long-distance transmission, and transmitted through transmission line 69 And a transmission unit 76 for transmitting to the address 71.

In addition, the transmitting station 71 channel-codes the SMPTE 310M signal transmitted from the transmitting unit 76 of the broadcasting station 70, and then executes an error elimination signal processing to output the channel coding unit 77, and the channel coding unit And a modulator 79 for modulating the digital broadcast signal input from the 77, for example, the SMPTE 310M signal, and transmitting it over the air via the antenna 78.

Meanwhile, referring to the operation of the digital broadcasting transmission system using the conventional transmission line as described above, first, the broadcasting signal generator 72 of the broadcasting station 70 generates a drama or news or other broadcasting signal using a camera or other recording equipment. The video signal of the generated broadcast signal is output to the digital video signal processing block 73, and the audio signal is output to the digital audio signal processing block 74. Then, the digital video signal processing block 73 compresses and inputs the input digital video signal to the service multiplex block 75. The digital audio signal processing block 74 also compresses and inputs the input digital audio signal to the service multiplex block 75. Accordingly, the service multiplex block 75 includes control signals in the compressed video and audio signals input from the digital video signal processing block 73 and the digital audio signal processing block 74, respectively. The synthesizer is output to the transmission unit 76. Then, the transmission unit 76 of the broadcasting station 70 converts the digital broadcast signal output from the service multiplex block 75 into SMPTE 310M, which is a signal standard for long-distance transmission, and transmits the signal through the transmission line 69. To send).

Here, when the transmitting station 71 is located relatively far from the broadcasting station 70, the broadcasting signal is transmitted through a microwave or a separate transmission device.

At this time, the channel coding unit 77 of the transmitting station 71 performs channel coding on the SMPTE 310M signal transmitted from the transmitting unit 76 of the broadcasting station 70 through the transmission line 69, and then uses an error canceling signal process such as randomizer, Reed-solomon coding, Trellis encoding, and interleaver are performed to reduce errors during radio transmission, and then output to modulator 79. The modulator 79 modulates a digital broadcast signal, for example, an SMPTE 310M signal, input from the channel coding unit 77, and transmits the modulated digital broadcast signal through the antenna 78 as airwaves. Then, the digital TV 80 scattered in an unspecified number of areas receives the broadcast signal transmitted from the transmitting station 71 and watches the TV program in a normal manner.

However, in the digital broadcasting transmission system using the conventional transmission line as described above, since the SMPTE 310M signal, which is a signal standard of the broadcast signal transmitted from the broadcasting station 70 to the transmitting station 71, is not a signal suitable for long distance transmission, the transmitting station 71 is a broadcasting station. In the case of being relatively far from 70, it is necessary to transmit broadcast signals through expensive microwave or separate transmission equipment, which is a factor to significantly increase the cost of installing a digital television transmission network.

In addition, the digital broadcasting transmission system using the conventional transmission line as described above has a problem that the compatibility of the transmission device for digital broadcasting is also significantly degraded because it cannot be connected to an existing infrastructure such as a communication network such as the Internet. .

Accordingly, the present invention has been invented to solve the above conventional problems, converts and transmits a digital broadcasting signal to an Internet transmission signal using the Internet established between a broadcasting station and a transmitting station, and restores it to a digital broadcasting signal again at the transmitting station. By transmitting the air over the air, the digital broadcasting signal is transmitted using the existing infrastructure without the need for installing a separate expensive transmission equipment for transmitting the broadcast signal. It is an object of the present invention to provide a transmission system for digital television and a control method thereof.

It is another object of the present invention to provide a digital broadcasting transmission signal processing unit capable of restoring a digital broadcasting signal converted into an internet transmission signal in a digital television receiver, so that a separate transmission station system is not required, thereby miniaturizing the digital broadcasting system. The present invention provides a digital television transmission system using the Internet and a control method thereof.

The present invention for achieving the above object is a digital television broadcasting network transmission system, the transmission unit for converting and outputting the digital broadcast signal to a signal standard for transmission, and the transmission signal output from the transmission unit as the Internet transmission signal A broadcasting station transmission device comprising an Internet transmission signal conversion device unit for converting and transmitting the conversion signal to a transmission station transmission device through the Internet; A digital broadcast signal processing unit for restoring and outputting an internet transmission signal input through the Internet from the internet transmission signal conversion unit of the broadcasting station transmission device to a digital broadcast signal, and modulating the digital broadcast signal input from the digital broadcast signal output processing unit Transmission system and control method of digital television using the Internet, comprising a transmitter transmission device including a modulator for transmitting a radio wave through an antenna and generating a synchronous clock signal therein and providing the synchronous clock signal as the synchronous clock signal of the digital broadcasting transmission signal processor. To provide.

1 is an explanatory diagram illustrating a conventional digital broadcast signal transmission system.

2 is an explanatory diagram illustrating a transmission system of the present invention.

3 is an explanatory diagram for explaining an Internet transmission signal conversion apparatus unit of the transmission system of the present invention.

4 is an explanatory diagram for explaining a digital broadcast transmission signal processor of the present invention transmission system.

5 is an explanatory diagram illustrating a typical internet connection structure.

6 is an explanatory diagram illustrating another embodiment of the present invention.

7 is a flowchart of the present invention.

8 is a flowchart of another embodiment of the present invention.

<Detailed Description of Codes>

1: Internet 2: Broadcasting station

3: transmitting station 4: broadcasting signal generator

5: Digital video signal processing block 6: Digital audio signal processing block

7: service multiplex block 8: transmission unit

9: Internet transmission signal conversion unit 10: Digital broadcasting transmission signal processing unit

11: antenna 12: modulator

13: digital broadcast signal interface 14: memory buffer

15: control block unit 16: Ethernet interface unit

17: Internet transmission signal processing interface unit 18: buffer

19: control block 20: MPEG header mux unit

21: P / S converter 22: phase encoder

23: line buffer 24: the first clock portion

25: second clock unit 26: digital television

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

The system of the present invention converts a digital broadcast signal produced as shown in FIG. 2 into an Internet protocol (internet protocol) and transmits it through the Internet (1), and the broadcast station (2) and the Internet (1). ) Can be largely divided into a transmission station (3) for converting an Internet transmission signal inputted through a digital signal into a digital broadcast signal.

The broadcasting station 2 compresses and encodes a broadcast signal generator 4 for generating a drama or news information signal as a digital broadcast signal, and a video signal of a digital broadcast signal input from the broadcast signal generator 4. And a digital audio signal processing block 6 for compressing and outputting an audio signal of a digital broadcast signal input from the broadcast signal generator 4, and outputting the digital video / processing block. A service multiplex block 7 which synthesizes and outputs additional signals including control signals to the compressed video / audio signals input from the audio signal processing blocks 5 and 6, and the service multiplex block 7; Transmission unit 8 for converting the digital broadcast signal outputted from the signal into SMPTE 310M, which is a signal standard for long distance transmission, and outputting the SMPTE 310 outputted from the transmission unit 8; Internet transmission signal conversion device section 9 for converting the M signal into an Internet transmission signal and transmitting it to transmission station 3 via Internet 1.

In addition, the transmission station 3 is a digital broadcast that restores and outputs the Internet transmission signal input through the Internet 1 from the Internet transmission signal conversion unit 9 of the broadcasting station 2 into a digital broadcast signal, that is, an SMPTE 310M signal. The digital broadcast transmission signal by modulating the digital broadcast signal inputted from the transmission signal processing unit 10 and the digital broadcasting transmission signal processing unit 10 and transmitting the signal over the air through the antenna 11 and generating a synchronous clock signal therein. And a modulator 12 that provides the synchronization clock signal of the processing unit 10.

Here, the Internet transmission signal conversion unit 9 and the digital broadcast signal interface unit 13 for receiving and interfacing the digital broadcast signal input from the transmission unit 8, that is, SMPTE 310M signal as shown in FIG. The memory buffer 14 temporarily stores the digital broadcast signal input from the digital broadcast signal interface unit 13 and the digital broadcast signal stored in the memory buffer 14, that is, the SMPTE 310M signal by analyzing the Internet (1). Internet conversion signal for the SMPTE 310M signal stored in the memory buffer 14 and the control block unit 15 for processing the Internet transmission signal for transmission to the overall control function of the Internet transmission signal conversion device section 9 and the memory buffer 14 For example, it includes an Ethernet interface unit 16 for interfacing the 100BaseT signal and then transmitting to the Internet 1 according to the function control signal of the control block unit 15.

In addition, the digital broadcasting transmission signal processing unit 10 is an Internet transmission signal processing interface unit 17 for interfacing the Internet conversion signal of the broadcasting station 2 transmitted through the Internet 1, for example, 100BaseT signal, as shown in FIG. ), A buffer 18 for temporarily storing an Internet conversion signal, for example, a 100BaseT signal, for the SMPTE 310M signal input to the Internet transmission signal processing interface unit 17, and a SMPTE 310M signal temporarily stored in the buffer 18. A control block 19 for analyzing the Internet-converted signal, for example, 100BaseT signal, rearranging and processing the original digital broadcast signal, that is, the SMPTE 310M signal, and controlling the function of the digital broadcast transmission signal processor 10; The restored digital broadcast signal of the buffer 18, that is, the MPEG header included in the SMPTE 310M signal is checked in units of bytes, and if there is no MPEG header in the signal, The MPEG header mux unit 20 for outputting and the P / S converter 21 for converting a parallel restored digital broadcast signal input from the MPEG header mux unit 20, that is, an SMPTE 310M signal, into a serial signal and outputting the serial signal. And a phase encoder 22 for line coding the digital broadcast signal output from the P / S converter 21, that is, an SMPTE 310M signal, and a digital broadcast signal output from the phase encoder 22, that is, SMPTE. And a line buffer 23 for buffering the 310M signal and then transmitting the modulator 12 to the modulator 12.

Here, at one end of the MEPG header mux 20 and the P / S converter 21, a clock signal (10.76 MHz) provided from the modulator 12 is divided and synchronized with the clock signal of the modulator 12. A first clock unit 24 for generating one clock signal (64.57 MHz) is connected, and one end of the phase encoder 22 is provided with a first clock signal (64.57 MHz) provided by the first clock unit 24. The second clock unit 25 for generating a second clock signal (77.57 MHz) is connected to be synchronized with the clock signal of the modulator 12 by using the.

Here, between the Internet transmission signal conversion unit 9 of the apparatus of the present invention and the digital broadcast transmission signal processing unit 10 connected to the Internet transmission signal conversion unit 9 via the Internet 1 are shown in FIG. As described above, the conventional Internet protocol stack structure may be formed. For example, the Internet transmission signal converting unit 9 and the digital broadcasting transmission signal processing unit 10 may include an application layer and an SMPTE 310M adaptive layer, respectively. It is composed of Network layer, Data layer, and Physical layer.

That is, the SMPTE 310M adaptive layer is a layer that exchanges data in order to convert the SMPTE 310M signal into an Internet transmission signal.

The application layer is a layer implemented in control blocks. The application layer exchanges data with the SMPTE 310M adaptation layer and is a layer responsible for exchanging data with the IP layer toward the Internet.

The network layer corresponds to the third layer of the ISO OSI 7-layer model, and is a layer that is responsible for routing for transmitting data in a communication network.

The data layer corresponds to the second layer of the ISO OSI 7-layer model, and is a layer for transmitting data through an open transport link.

The physical layer corresponds to the first layer of the ISO OSI 7-layer model, and is a layer that is in charge of physical and electrical functions in order to establish, maintain, and cut a physical link.

Next, a control method of the present invention system having the above configuration will be described.

As shown in FIG. 7, the present invention converts the digital broadcast signal generated by the digital broadcast signal processing step S2 in the initial state S1 to STPTE 310MTLS, which is a signal standard for long distance transmission, and outputs the converted digital broadcast signal. After the digital broadcast signal processing step (S2), the process proceeds to the Internet signal conversion step (S3) to convert the digital broadcast signal converted into a signal standard for long distance transmission into an Internet transmission signal. In addition, after the Internet signal conversion step (S3) proceeds to the Internet transmission step (S4) and transmits the digital broadcast signal signal-converted to the Internet transmission signal to the destination via the Internet.

On the other hand, after the Internet transmission step (S4) proceeds to the digital broadcast signal recovery step (S5) to restore the digital broadcast signal transmitted in the form of the Internet transmission signal over the Internet to be transmitted over the air.

That is, the broadcast signal generator 4 of the broadcasting station 2 equipped with the present invention generates a drama or news or other broadcast signal using a camera or other recording equipment, and the video signal of the generated broadcast signal is a digital video signal processing. In block 5, the audio signal is output to the digital audio signal processing block 6. Then, the digital video signal processing block 5 compresses the input digital video signal and inputs it to the service multiplex block 7. The digital audio signal processing block 6 also compresses and inputs the input digital audio signal to the service multiplex block 7. Accordingly, the service multiplex block 7 includes control signals in the compressed video and audio signals input from the digital video signal processing block 5 and the digital audio signal processing block 6, respectively. It synthesizes and outputs it to the transmission part 8. Then, the transmission unit 8 converts the digital broadcast signal output from the service multiplex block 7 into SMPTE 310M, which is a signal standard for long-distance transmission, and then the digital broadcast signal of the Internet transmission signal conversion unit 9. Input to the interface unit 13.

Then, the digital broadcast signal interface unit 13 receives and interfaces the digital broadcast signal input from the transmission unit 8, that is, the SMPTE 310M signal, and temporarily stores it in the memory buffer 14. In addition, the control block unit 15 of the Internet transmission signal conversion unit 9 for analyzing the digital broadcast signal stored in the memory buffer 14, that is, SMPTE 310M frame signal of 188 bytes for transmission to the Internet (1) After converting to an Internet transmission signal, for example, by adding a header signal for Internet transmission, converting it into an Internet transmission signal, and converting the converted Internet transmission signal, for example, 100BaseT signal via the Internet 1 through the Ethernet interface unit 16, The digital broadcast transmission signal processor 10 of the transmission station 3 transmits the data.

Then, the Internet transmission signal processing interface unit 17 of the digital broadcasting transmission signal processing unit 10 transmits the broadcasting station 2 transmitted from the Internet transmission signal conversion unit 9 of the broadcasting station 2 through the Internet 1. Internet conversion signal, for example, 100BaseT signal of 19.39bps interfaced to the buffer 18 and temporarily stored. At this time, the control block 19 of the digital broadcast transmission signal processing unit 10 analyzes the Internet conversion signal, e.g., 100BaseT signal, for the SMPTE 310M signal temporarily stored in the buffer 18, that is, the original digital broadcast signal, that is, 188 Byte. The SMPTE 310M is rearranged and processed into an SMPTE 310M frame signal and output to the MPEG header mux unit 20. Then, the MPEG header mux unit 20 checks the MPEG header included in the reconstructed digital broadcast signal output from the buffer 18, that is, the SMPTE 310M frame signal of 188 bytes in byte units, and the MPEG header in the signal. If not present, the P / S converter 21 is outputted to the P / S converter 21. At this time, the MPEG header mux 20 synchronizes the data with the first clock signal (64.77 MHz) of the first clock unit 24. Output to / S conversion section 21. The P / S converter 21 converts a parallel reconstructed digital broadcast signal input from the MPEG header mux unit 20, that is, an SMPTE 310M frame signal of 188 bytes into a serial signal and outputs the serial signal to the phase encoder 22. In this case, the P / S converter 21 outputs data to the phase encoder 22 in synchronization with the first clock signal (64.77 MHz) of the first clock unit 24.

In addition, the serial digital broadcast signal output from the P / S converter 21, that is, the SMPTE 310M signal is line coded by the phase encoder 22 and input to the line buffer 23, wherein the phase encoder ( 22) outputs the output data using a second clock signal (77.57 MHz) input from the second clock unit 25, that is, a two-divided signal of a 77.57 MHz VCO clock that is a multiple of 19.39 MHz. Then, the line buffer 23 buffers the digital broadcast signal output from the phase encoder 22, that is, the SMPTE 310M frame signal of 188 bytes, and transmits it to the modulator 12.

Here, the first clock signal (64.77MHz) and the second clock signal (77.57MHz) are generated using the clock signal (10.76MHz) input from the modulator 12 of the transmission station 3 for synchronization. In this case, the first clock signal (64.77MHz) is a signal obtained by synchronizing the clock signal (10.76MHz) of the modulator 12 by six divisions, and the second clock signal is also synchronized with the clock signal of the modulator 12.

That is, 313 divides the first clock signal (64.77MHz) synchronized with the clock signal (10.76MHz) of the modulator 12 to 206304.87Hz, and divides the second clock signal (77.57MHz) to 376 to make 206304.87Hz. Synchronized to the first clock signal. Therefore, the second clock signal (77.57MHz) is synchronized to the first clock signal (64.77MHz) and the first clock signal (64.77MHz) is again synchronized to the clock signal (10.76MHz) of the modulator 12, the present invention The transmission quality of the data is significantly improved because the transmission device of is completely synchronized with the modulator 12.

On the other hand, the modulator 12 modulates the digital broadcast signal input from the line buffer 23, for example, SMPTE 310M frame signal of 188 Bytes and transmits the air through the antenna (11). Then, the digital TV 26 dispersed in an unspecified number of areas receives the broadcast signal transmitted from the transmitting station 3 and watches the TV program in a normal manner.

In addition, according to another embodiment of the present invention, as shown in FIG. 6, the digital broadcasting transmission signal processor 10 of the present invention is provided inside the digital television 26, and the operation thereof is shown in FIG. As it works the same as the above process.

As in the other embodiment, when the digital broadcast transmission signal processing unit 10 of the present invention is provided in the digital television 26, it is not necessary to install a separate transmission station for digital broadcasting.

As described above, the present invention converts and transmits a digital broadcast signal to an Internet transmission signal using the Internet established between a broadcasting station and a transmission station, and restores it to a digital broadcast signal and transmits it over the air, thereby transmitting broadcast signals. There is an advantage that can significantly reduce the transmission network installation cost of digital television because the digital broadcasting signal is transmitted by using the existing infrastructure as it is without the need to install a separate expensive transmission equipment.

In addition, according to the present invention, when a digital broadcasting transmission signal processing unit capable of restoring a digital broadcasting signal converted into an internet transmission signal is provided in the digital television receiver, a separate transmission station system is not required. There are also effects that can be achieved.

Claims (9)

In the digital television broadcasting network transmission system, A broadcasting station configured to convert the digital broadcast signal into a signal standard for transmission and output the converted signal; and an internet transmission signal conversion device unit converting the transmission signal output from the transmission unit into an internet transmission signal and transmitting the converted signal to an transmission station transmission device through the Internet. A transmission device; A digital broadcast signal processing unit for restoring and outputting an internet transmission signal input through the Internet from the internet transmission signal conversion unit of the broadcasting station transmission device to a digital broadcast signal, and modulating the digital broadcast signal input from the digital broadcast signal output processing unit A transmission system of a digital television using the Internet, comprising: a transmitter transmitting apparatus including a modulator for transmitting over the air through an antenna and generating a synchronous clock signal therein and providing the synchronous clock signal as the synchronous clock signal of the digital broadcasting transmission signal processor. . delete delete According to claim 1, wherein the digital broadcast signal transmission unit Internet transmission signal processing interface unit for interfacing the Internet conversion signal of the broadcasting station transmitted through the Internet, and the Internet conversion signal for the digital broadcast signal input to the Internet transmission signal processing interface unit A buffer for temporarily storing the data; and a control block unit for analyzing, converting, processing, and outputting an internet conversion signal for the digital broadcast signal temporarily stored in the buffer, and outputting the original digital broadcast signal. A MPEG header mux checks the MPEG headers in bytes and adds an output if there is no MPEG header, and converts and outputs a parallel restored digital broadcast signal input from the MPEG header mux to a serial signal. P / S converter and digital broadcast signal output from the P / S converter And a line encoder configured to line-code and output a line encoder, and a line buffer buffering the digital broadcast signal outputted from the phase encoder and then transmitting the buffered digital broadcast signal to the modulator. 5. The method of claim 4, wherein the digital broadcasting transmission signal processor divides the clock signal provided from the modulator into the MEPG header mux unit and the P / S converter to provide a first clock signal to the MEPG header mux and the P / S converter. And a second clock unit for providing a second clock signal to the phase encoder so as to be synchronized with the clock signal of the modulator by using the first clock unit and the first clock signal of the first clock unit. Transmission system. In digital television, An internet transmission signal processing interface for interfacing the internet conversion signal of a broadcasting station transmitted through the internet to the digital television, a buffer for temporarily storing the internet conversion signal for the digital broadcast signal inputted to the internet transmission signal processing interface, and the buffer; Checking the control block unit for analyzing the Internet conversion signal for the digital broadcast signal temporarily stored therein, rearranging, processing, and outputting the original digital broadcast signal, and MPEG header included in the restored digital broadcast signal of the buffer by byte unit. An MPEG header mux unit for adding and outputting an MPEG header if there is no MPEG header in this signal, a P / S converter for converting and outputting a parallel restored digital broadcast signal input from the MPEG header mux unit into a serial signal, and the P Line-coding the digital broadcast signal output from the / S converter And a digital broadcast transmission signal processor comprising a phase encoder and a line buffer for buffering the digital broadcast signal output from the phase encoder and then transmitting the signal to a modulator. delete Digital broadcasting signal processing step of converting the digital broadcasting signal generated in the broadcasting system into a signal standard for long distance transmission and outputting, and digital broadcasting signal converted into a signal standard for long distance transmission by the digital broadcasting signal processing step for internet transmission. Internet signal conversion step of converting the signal, Internet transmission step of transmitting the digital broadcast signal converted into the Internet transmission signal by the Internet signal conversion step to the destination via the Internet, and Internet transmission through the Internet after the Internet transmission step A method for controlling a digital television transmission system using the Internet, comprising: recovering a digital broadcast signal transmitted in a signal form and transmitting the digital broadcast signal over the airwaves. The method of claim 8, further comprising a clock synchronizing step in which the digital broadcast signal restored during the digital broadcast signal restoration step is synchronized with a clock signal provided from a transmission station modulator. .