KR20180058615A - Apparatus for converting broadcasting signal method for using the same - Google Patents

Abstract

A broadcast signal conversion apparatus and method are disclosed. According to an aspect of the present invention, there is provided a broadcast signal conversion apparatus including a demultiplexer for receiving a terrestrial broadcast signal and generating a terrestrial signaling signal; A signaling conversion unit for converting the terrestrial signaling signal into a cable signaling signal; A cable multiplexer for multiplexing the cable signaling signal to generate a cable broadcasting signal, and a cable modulator for modulating the cable broadcasting signal and transmitting the modulated cable broadcasting signal to a cable broadcasting network.

Description

Technical Field [0001] The present invention relates to a broadcast signal converting apparatus and a broadcast signal converting apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast communication technology, and more particularly, to a technique for converting a terrestrial broadcast signal into a cable broadcast signal for retransmission to a cable network.

The terrestrial or cable digital broadcasting, which is now called DTV, is a broadcasting service which is composed of PSI (Program Specific Information) defined by MPEG (Moving Picture Experts Group) and Program and System Information Protocol (PSIP) defined by ATSC Lt; RTI ID = 0.0 > DTV < / RTI > receiver

At this time, the DTV receiver first parses the received signaling signal to analyze the broadcast service configuration information, and then decodes and plays the AV media based on the analyzed information.

Recently, the terrestrial UHDTV broadcasting service can provide a service according to the signaling method defined by the ATSC 3.0 name without using the above signaling method. These ATSC 3.0-based signaling schemes are defined to be IP-service friendly and to minimize the association between service provisioning layers. This is because the ATSC 3.0 transport protocol includes the broadband area, all aimed at IP-based content delivery. In addition, while the current DTV transport is composed of MPEG-2 TS, UHDTV based on ATSC 3.0 divides AV media into MPU / DASH, MMT / ROUTE, UDP, And there are many differences in the signaling configuration.

Korean Patent Laid-Open No. 10-2014-0090288, entitled " UHD class terrestrial broadcast retransmission device via cable broadcasting network ", converts terrestrial broadcast data corresponding to low-grade UHD video into high-definition UHD video according to a viewer's choice, (UHD) terrestrial broadcast retransmission apparatus capable of retransmitting the UHD terrestrial broadcast data through the UHD.

However, Korean Patent Publication No. 10-2014-0090288 has a limit in terms of converting a terrestrial broadcasting signal into a cable broadcasting signal suitable for a cable network.

An object of the present invention is to provide a terrestrial broadcast service as a cable broadcast service through a cable network.

It is another object of the present invention to convert a terrestrial broadcast signal into a cable broadcasting signal in consideration of a transmission protocol area and a cable network.

It is another object of the present invention to apply the present invention not only to retransmission of a terrestrial broadcast signal to a cable network but also to retransmission to satellite and IPTV.

According to an aspect of the present invention, there is provided a broadcast signal converting apparatus including a demultiplexer for receiving a terrestrial broadcast signal and generating a terrestrial signaling signal; A signaling conversion unit for converting the terrestrial signaling signal into a cable signaling signal; A cable multiplexer for multiplexing the cable signaling signal to generate a cable broadcasting signal, and a cable modulator for modulating the cable broadcasting signal and transmitting the modulated cable broadcasting signal to a cable broadcasting network.

In this case, when the demux unit receives the terrestrial broadcast signal through the wireless network, the demultiplexer demodulates the baseband signal to generate a baseband signal, and performs baseband depacketizing and AITC Link -Layer PROTOCOL, ALP) to generate the terrestrial signaling signal.

In this case, when the terrestrial broadcasting signal is received through the wired network, the demux unit may perform demultiplexing to generate a terrestrial signaling signal corresponding to each of the IP formats.

At this time, the signaling conversion unit obtains information on the SLS (Service Layer Signaling) signal from the information obtained by parsing the LLS signal of the terrestrial signaling signal, and outputs the SLS signal corresponding to the D- And transmits the parsed SLS signal to the demux unit.

In this case, the demultiplexer may generate a terrestrial broadcast media signal based on information obtained by parsing the SLS signal.

In this case, the broadcast signal conversion apparatus may further include a media conversion unit for converting the terrestrial broadcast media signal into a cable broadcast media signal.

In this case, the signaling conversion unit may generate the cable signaling signal using information obtained by parsing the LLS signal and the SLS signal, and pre-stored cable basic information.

In this case, the signaling conversion unit may control the cable signaling signal in consideration of a transmission period and a transmission order.

In this case, the cable multiplexer may multiplex the cable signaling signal and the cable broadcast media signal into one stream.

At this time, the cable multiplexer may further multiplex the external media signal and the additional data signal input by the user into the one stream.

At this time, the cable multiplexer may multiplex the one stream in MPEG-2 stream or IP packet format to generate the cable broadcasting signal.

According to another aspect of the present invention, there is provided a method for converting a broadcast signal into a broadcast signal, the method comprising: generating a terrestrial signaling signal by receiving a terrestrial broadcast signal; Parsing the terrestrial signaling signal into a cable signaling signal; Generating a cable broadcasting signal by multiplexing the cable signaling signal, and modulating the cable broadcasting signal and transmitting the modulated cable broadcasting signal to a cable broadcasting network.

In this case, the converting step may include obtaining information on a SLS (Service Layer Signaling) signal from information obtained by parsing a low level signal (LLS) signal of the terrestrial signaling signal, and transmitting the SLS signal corresponding to the positioned information to the terrestrial wave From the signaling signal, and to parse the acquired SLS signal.

At this time, the converting step may generate a terrestrial broadcast media signal based on information obtained by parsing the SLS signal.

At this time, the converting step may convert the terrestrial broadcast media signal into a cable broadcast media signal.

At this time, the converting step may generate the cable signaling signal using information obtained by parsing the LLS signal and the SLS signal and pre-stored cable basic information.

In this case, the converting step may control the cable signaling signal in consideration of a transmission period and a transmission order.

In this case, the step of generating the cable broadcasting signal may multiplex the cable signaling signal and the cable broadcasting media signal into one stream.

In this case, the step of generating the cable broadcasting signal may further multiplex the external media signal and the additional data signal input by the user into the one stream.

At this time, the generating of the cable broadcasting signal may generate the cable broadcasting signal by multiplexing the one stream in MPEG-2 stream or IP packet format.

The present invention can provide a terrestrial broadcast service as a cable broadcast service through a cable network.

In addition, the present invention can be converted into a cable broadcasting signal in consideration of the transmission protocol area of the terrestrial broadcast signal and the suitability of the cable network.

In addition, the present invention can be applied not only to retransmission of terrestrial broadcast signals to a cable network but also to retransmission to satellite and IPTV.

1 is a diagram illustrating a protocol stack of a terrestrial broadcast service according to an embodiment of the present invention.
2 is a diagram illustrating a process of converting a broadcast signal according to an embodiment of the present invention.
3 is a block diagram illustrating a broadcast signal conversion apparatus according to an embodiment of the present invention.
4 is a detailed block diagram illustrating an example of the signaling conversion unit shown in FIG.
5 is a flowchart illustrating a method of converting a broadcast signal according to an exemplary embodiment of the present invention.
FIG. 6 is a flowchart illustrating an example of the signaling signal conversion step shown in FIG. 5 in detail.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Also, the terms " part, "" module, " and " module" in the specification mean units for processing at least one function or operation, Lt; / RTI >

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

1 is a diagram illustrating a protocol stack of a terrestrial broadcast service according to an embodiment of the present invention.

Referring to FIG. 1, a protocol stack of a terrestrial broadcast service according to an embodiment of the present invention can be applied to a broadcast network and a broadband network of an ATSC 3.0 broadcasting standard and a domestic UHD broadcasting transmission / reception matching standard.

As shown in FIG. 1, the ATSC 3.0 North American standard and the UHD broadcasting standard in Korea may include a transmission protocol called MMTP for transmitting an MPU through a broadcasting network, and a ROUTE / DASH transmission protocol for transmitting DASH segments and NRT files. Also, as with ROUTE / DASH, DASH segments and NRT files can be transmitted over TCP / IP over a broadband network.

In this case, the apparatus and method for converting a broadcast signal may convert a terrestrial broadcast signal into a cable broadcast signal in consideration of a protocol stack of a terrestrial broadcast service.

2 is a diagram illustrating a process of converting a broadcast signal according to an embodiment of the present invention.

Referring to FIG. 2, the broadcasting signal conversion process according to an exemplary embodiment of the present invention may receive the terrestrial broadcast signal 20 transmitted by the antenna 10 to the airwave, and may transmit the terrestrial broadcast signal 20 to the broadcast signal conversion apparatus 100.

Also, the terrestrial broadcasting signal 30 that is not modulated based on IP can be input through the wired line.

At this time, the terrestrial broadcast signal may correspond to the terrestrial UHDTV broadcast signal.

At this time, the broadcast signal conversion apparatus 100 may convert the terrestrial broadcast signals 20 and 30 into the cable broadcast signal 40 and retransmit the same via the cable network.

At this time, the broadcast signal conversion apparatus 100 may receive RF RF signals or IP signals, which are the terrestrial broadcast signals 20 and 30, and convert the signal format according to the cable broadcast signal 40 to be transmitted to the cable network .

The terrestrial broadcast signal according to an embodiment of the present invention can be defined by dividing broadcast service signaling for providing a broadcast service into LLS (Low Level Signaling) and SLS (Service Layer Signaling) as in the ATSC 3.0 standard.

For example, the LLS that is initially received uses the fixed IP address and port number of 224.0.23.60 and 4937, and is mainly used for fast channel scanning and bootstrapping for service acquisition. .

Also, the SLS obtained through parsing of the LLS defines information necessary for providing a broadcasting service such as component information constituting each service, a content acquisition method, and a receiver capability required for providing a service, Lt; / RTI >

That is, the broadcast signal conversion apparatus 100 according to an exemplary embodiment of the present invention can first parse an LLS signal transmitted through another transmission path, extracts and extracts an SLS signal including information for each service, Can be parsed.

3 is a block diagram illustrating a broadcast signal conversion apparatus according to an embodiment of the present invention.

3, the apparatus 100 for converting a broadcast signal according to an exemplary embodiment of the present invention includes a demultiplexer 110, a signaling converter 130, a media converter 140, a cable multiplexer 150, And a cable modulation section 160. [

The demultiplexer 110 receives the terrestrial broadcast signal and can generate a terrestrial signaling signal.

At this time, the terrestrial broadcast signal may correspond to the UHDTV broadcast service signal based on the ATSC 3.0 standard.

At this time, the demultiplexer 110 demodulates the terrestrial broadcast signal received through the wireless network based on the ATSC 3.0 standard, and outputs the baseband signal.

At this time, the demultiplexer 110 performs baseband depacketizing and ATIP (ATSC Link-Layer PROTOCOL, ALP) depacketizing on the baseband signal to generate a terrestrial signaling signal corresponding to the IP stream It is possible.

At this time, the demultiplexer 110 may perform depacketizing to generate signaling signals, video and audio media signals corresponding to each of the IP formats.

In addition, when the terrestrial broadcasting signal is input through the IP to the wired line, the demux unit 110 can demultiplex the terrestrial broadcasting signal and output the IP stream directly.

At this time, the demultiplexer 110 may perform demultiplexing to generate a signaling signal, a video signal, and an audio media signal corresponding to each of the IP formats.

The signaling conversion unit 130 may convert the terrestrial signaling signal into a cable signaling signal.

In this case, the signaling conversion unit 130 may request the demultiplexer 110 to transmit an LLS signal included in the terrestrial signaling signal including basic information for fast channel scanning and service acquisition.

In this case, the demultiplexer 110 may transmit the requested LLS signal to the signaling conversion unit 130. FIG.

In this case, the signaling conversion unit 130 may request the demultiplexer 110 to transmit an SLS signal including service configuration information necessary for providing a broadcast service, using information obtained by parsing the LLS signal and parsing the LLS signal.

In this case, the demultiplexer 110 may transmit the requested SLS signal to the signaling converter 130. [

In this case, the signaling conversion unit 130 may transmit information obtained by parsing the SLS signal and parsing the SLS signal to the demultiplexer 110.

At this time, the demultiplexer 110 can generate a terrestrial broadcast media signal based on information obtained by parsing the SLS signal.

At this time, the demultiplexer 110 can transmit the generated terrestrial broadcast media signal to the media converter 140.

At this time, the terrestrial broadcast media signal may include video media and audio media.

In this case, the signaling conversion unit 130 may generate the cable signaling signal using information obtained by parsing the LLS signal and the SLS signal, and pre-stored cable basic information.

At this time, the cable signaling signal may correspond to the cable PSI / PSIP signal and may be a next generation cable broadcast signaling signal in the future.

At this time, the signaling conversion unit 130 may generate a cable signaling signal by further using the input information of the user for adding a cable media signal or modifying cable transmission information from an external input signal.

In this case, the signaling conversion unit 130 may control the cable signaling signal in consideration of the transmission period and the transmission order.

In this case, the signaling conversion unit 130 may transmit the controlled cable signaling signal to the cable multiplexing unit 150.

The media conversion unit 140 may convert the terrestrial broadcast media signal into a cable broadcast media signal.

At this time, the media conversion unit 140 may convert the format of the media signal using various methods.

For example, the media conversion unit 140 may decode the terrestrial broadcast media signal into an analog signal, and then encode it into a cable broadcast media signal.

As another example, the media conversion unit 140 may use a method of maintaining basic coding data and converting only the format of the media.

The cable multiplexer 150 may multiplex the cable signaling signals to generate cable broadcast signals.

At this time, the cable multiplexer 150 can multiplex the cable signaling signal and the cable broadcast media signal into one stream.

At this time, the cable multiplexer 150 can further multiplex the external media signal and the additional data signal input by the user into one stream.

At this time, the cable multiplexer 150 can multiplex a single stream in the MPEG-2 stream or IP packet format to generate a cable broadcast signal.

At this time, the cable multiplexer 150 may stream the cable broadcasting signal in a different format according to future technology development.

The cable modulating unit 160 can modulate the cable broadcasting signal and transmit it to the cable broadcasting network.

At this time, the cable modulating unit 160 can modulate the RF signal suitable for the cable broadcasting network.

4 is a detailed block diagram illustrating an example of the signaling conversion unit shown in FIG.

4, the signaling conversion unit 130 includes an LLS parsing unit 131, an SLS parsing unit 132, a parsing information storage unit 133, a cable basic information storage unit 134, a cable PSI / (135) and a cable PSI / PSIP transmission unit (135).

The LLS parsing unit 131 and the SLS parsing unit 132 are independently configured to convert the LLS signal and the SLS signal into the LLS signal and the SLS signal, Can be parsed.

The LLS parsing unit 131 can first request the LUX signal to the demux unit 110 to parse the LLS signal and store the parsed information of the LLS signal in the parsing information storage unit 133. [

The parsing information storage unit 133 can obtain the position of the SLS signal using information obtained by parsing the LLS signal, and can transmit the position of the SLS signal to the SLS parsing unit 132.

The SLS parsing unit 132 may request the SLS signal to the demultiplexer 110 using the received SLS signal and may parse the SLS signal. The parsing unit 133 may parse the SLS signal, Lt; / RTI >

The parsing information storage unit 133 may transmit information obtained by parsing the stored LLS signal and the SLS signal to the demultiplexer 110, the media converter 140, and the cable PSI / PSIP generator 135.

The cable basic information storage unit 134 may store basic cable information for a cable network for transmitting a cable broadcasting signal.

The cable PSI / PSIP generation unit 135 can generate a cable signaling signal by using information obtained by parsing the LLS signal and the SLS signal and pre-stored cable basic information.

At this time, the cable signaling signal may correspond to the cable PSI / PSIP signal and may be a next generation cable broadcast signaling signal in the future.

At this time, the cable PSI / PSIP generation unit 135 may generate the cable signaling signal by further using the input information of the user for adding the cable media signal or modifying the cable transmission information from the external input signal.

For example, the cable PSI / PSIP transmission unit 135 transmits a broadcast stream unique ID, a main channel number, a subchannel number, a language information, and time information to the cable signaling signal using information obtained by parsing the LLS signal and the SLS signal Can be configured.

At this time, the cable PSI / PSIP transmission unit 135 uses the cable basic information stored in the cable basic information storage unit 134 to configure a transmission frequency and a modulation mode in the cable signaling signal for transmission to the cable network .

At this time, the cable PSI / PSIP transmission unit 135 can configure the cable signaling signal as the total number of programs for adding the media using the user input information input from the user, media information, and the like.

The user input information may include various programs and media information according to the purpose of the user who wants to retransmit the terrestrial broadcasting service to the cable broadcasting service.

At this time, the cable PSI / PSIP transmission unit 136 can control the cable signaling signal in consideration of the transmission period and the transmission order.

At this time, the cable PSI / PSIP transmission unit 136 can transmit the controlled cable signaling signal to the cable multiplexing unit 150.

5 is a flowchart illustrating a method of converting a broadcast signal according to an exemplary embodiment of the present invention. FIG. 6 is a flowchart illustrating an example of the signaling signal conversion step shown in FIG. 5 in detail.

Referring to FIG. 5, a broadcasting signal converting method according to an embodiment of the present invention may generate a terrestrial signaling signal (S210).

That is, the step S210 may generate the terrestrial signaling signal by receiving the terrestrial broadcast signal.

At this time, in step S210, the terrestrial broadcast signal received through the antenna 10 may be received, and the terrestrial broadcast signal not modulated on the IP basis may be received through the cable.

At this time, the terrestrial broadcast signal may correspond to the UHDTV broadcast service signal based on the ATSC 3.0 standard.

At this time, the step S210 may demodulate the terrestrial broadcast signal received through the wireless network based on the ATSC 3.0 standard and output a baseband signal.

At this time, in step S210, a terrestrial signaling signal corresponding to the IP stream may be generated by performing baseband depacketizing and ATIP (ATSC Link-Layer PROTOCOL, ALP) depacketizing on the baseband signal .

At this time, step S210 may perform depacketizing to generate signaling signals, video and audio media signals corresponding to each of the IP formats.

In addition, in step S210, when a terrestrial broadcast signal is input via IP to the wired network, demultiplexing may be performed to directly output the IP stream.

At this time, step S210 may perform demultiplexing to generate a signaling signal, a video signal, and an audio media signal corresponding to each of the IP formats.

In addition, the broadcasting signal converting method according to an embodiment of the present invention may perform signaling signal conversion (S220).

Referring to FIG. 6, step S220 may first parse the LLS signal and the SLS signal (S221).

That is, since the terrestrial broadcast signal can be defined as the two-stage service signaling in LLS and SLS in step S221, the LLS signal and the SLS signal can be independently parsed.

The LLS signal may include basic information for fast channel scanning and service acquisition.

The SLS signal may include service configuration information necessary for providing a broadcast service.

In this case, the step S221 may first parse the LLS signal and store the parsed information of the LLS signal.

In this case, in step S221, the position of the SLS signal can be determined using the information obtained by parsing the LLS signal, and the SLS signal can be requested using the position of the SLS signal.

At this time, the step S221 can parse the SLS signal and store information parsed from the SLS signal.

At this time, the step S221 may generate the terrestrial broadcast media signal based on the information obtained by parsing the SLS signal.

In addition, step S220 may generate a cable PSI / PSIP signal (S222).

That is, in step S222, the cable signaling signal may be generated using information obtained by parsing the LLS signal and the SLS signal, and pre-stored cable basic information.

At this time, the cable signaling signal may correspond to the cable PSI / PSIP signal.

At this time, the step S222 may generate the cable signaling signal by further using the input information of the user for adding the cable media signal or modifying the cable transmission information from the external input signal.

For example, in step S222, a broadcast signal unique ID, a main channel number, a subchannel number, language information, time information, and the like may be configured in a cable signaling signal using information obtained by parsing the LLS signal and the SLS signal.

At this time, in step S222, a transmission frequency, a modulation mode, and the like may be configured in the cable signaling signal for transmission to the cable network using the pre-stored cable basic information.

In this case, in step S222, the total number of programs for adding the media using the user input information input from the user, media information, and the like may be configured in the cable signaling signal.

The user input information may include various programs and media information according to the purpose of the user who wants to retransmit the terrestrial broadcasting service to the cable broadcasting service.

In this case, the step S222 may control the cable signaling signal in consideration of the transmission period and the transmission order.

At this time, step S222 may output the controlled cable signaling signal.

In addition, the step S220 may convert the media format (S223).

That is, the step S223 may convert the format of the terrestrial broadcast media signal into the cable broadcast media signal.

At this time, step S223 may be performed after step S221.

At this time, the format of the media signal can be converted using various methods in step S223.

For example, the step S223 may decode the terrestrial broadcast media signal into an analog signal, and then encode it into a cable media signal.

As another example, step S223 may use a method of maintaining basic coding data and converting only the format of the media.

In step S223, after the SLS signal is parsed in step S221 rather than after step S222, the media conversion unit 140

In addition, the broadcasting signal converting method according to an embodiment of the present invention may perform multiplexing (multiplexing) (S230).

That is, the cable broadcasting signal can be generated by multiplexing the cable signaling signal in step S230.

At this time, the step S230 may multiplex the cable signaling signal and the cable broadcast media signal into one stream.

In this case, step S230 may further multiplex the external media signal and the additional data signal input by the user into one stream.

At this time, the step S230 can multiplex the one stream into the MPEG-2 stream or the IP stream format to generate the cable broadcasting signal.

At this time, the step S230 may stream the cable broadcasting signal in a different format according to future technological developments.

In addition, the broadcasting signal converting method according to an embodiment of the present invention may perform the modulation (S240).

That is, in step S240, the cable broadcasting signal can be modulated and transmitted to the cable broadcasting network.

At this time, step S240 may be performed by modulating the RF signal suitable for the cable broadcasting network.

As described above, the apparatus and method for converting a broadcasting signal according to an embodiment of the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments may be modified in various ways All or some of the embodiments may be selectively combined.

10: terrestrial broadcast receiving antenna 20, 30: terrestrial broadcast signal
40: Cable broadcasting signal
100: Broadcast signal conversion device
110: DEMUX unit 130: Signaling conversion unit
131: LLS parsing unit 132: SLS parsing unit
133: Parsing information storage unit 134: Cable basic information storage unit
135: Cable PSI / PSIP generation unit 136: Cable PSI / PSIP transmission unit
140: media conversion unit 150: cable multiplexing unit
160: Cable modulation section

Claims (20)

A demultiplexer for receiving a terrestrial broadcast signal and generating a terrestrial signaling signal;
A signaling conversion unit for converting the terrestrial signaling signal into a cable signaling signal;
A cable multiplexer for multiplexing the cable signaling signal to generate a cable broadcasting signal; And
A cable modulating unit for modulating the cable broadcasting signal and transmitting the modulated cable broadcasting signal to a cable broadcasting network;
The broadcast signal converting apparatus comprising: The method according to claim 1,
The demultiplexer
Modulating the baseband signal to generate a baseband signal, and transmitting the baseband signal to a baseband demultiplexer (ATSC Link-Layer PROTOCOL, ALP) And generates the terrestrial signaling signal by performing packet timing. The method of claim 2,
The demultiplexer
Wherein when the terrestrial broadcasting signal is received through the wired network, demultiplexing is performed to generate the terrestrial signaling signal corresponding to each of the IP formats. The method of claim 3,
The signaling conversion unit
And acquires position information of an SLS (Service Layer Signaling) signal corresponding to information obtained by parsing an LLS (Low Level Signaling) signal of the terrestrial signaling signal. The method of claim 4,
The signaling conversion unit
Requesting the demultiplexer to obtain an SLS signal corresponding to the position information, acquiring the SLS signal, and parsing the obtained SLS signal and transmitting the parsed SLS signal to the demultiplexer. The method of claim 5,
The demultiplexer
And generates a terrestrial broadcast media signal based on information obtained by parsing the SLS signal. The method of claim 6,
The broadcast signal converter
Further comprising a media conversion unit for converting a format of the terrestrial broadcast media signal into a cable broadcast media signal. The method of claim 7,
The signaling conversion unit
And generates the cable signaling signal using information obtained by parsing the LLS signal and the SLS signal and pre-stored cable basic information. The method of claim 8,
The signaling conversion unit
Wherein the control unit controls the cable signaling signal in consideration of a transmission period and a transmission order. The method of claim 9,
The cable multiplexer
And multiplexes the cable signaling signal and the cable broadcast media signal into one stream. The method of claim 10,
The cable multiplexer
And further multiplexes the external media signal and the additional data signal input by the user into the one stream. The method of claim 11,
The cable multiplexer
And multiplexes the one stream in one of an MPEG-2 stream and an IP stream to generate the cable broadcasting signal. A method of using a broadcast signal conversion apparatus,
Generating a terrestrial signaling signal by receiving a terrestrial broadcast signal;
Parsing the terrestrial signaling signal into a cable signaling signal;
Generating a cable broadcasting signal by multiplexing the cable signaling signal; And
Modulating the cable broadcasting signal and transmitting it to a cable broadcasting network;
And converting the broadcast signal into a broadcast signal. 14. The method of claim 13,
The converting step
Wherein the position information of the SLS (Service Layer Signaling) signal corresponding to the information obtained by parsing the LLS signal of the terrestrial signaling signal is obtained. 15. The method of claim 14,
The converting step
Acquires the SLS signal using the position information of the SLS signal, and parses the obtained SLS signal. 16. The method of claim 15,
The converting step
And generating a terrestrial broadcast media signal based on information obtained by parsing the SLS signal. 18. The method of claim 16,
The converting step
And converting the terrestrial broadcast media signal into a cable broadcast media signal. 18. The method of claim 16,
The converting step
Wherein the cable signaling signal is generated using information obtained by parsing the LLS signal and the SLS signal and pre-stored cable basic information. 19. The method of claim 18,
The converting step
Wherein the control unit controls the cable signaling signal in consideration of a transmission period and a transmission order. The method of claim 19,
The step of generating the cable broadcast signal
Wherein the cable signaling signal and the cable broadcast media signal are multiplexed into one stream.

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