KR102281856B1 - Apparatus for converting broadcasting signal method for using the same - Google Patents

Abstract

A broadcast signal conversion apparatus and method are disclosed. A broadcast signal conversion apparatus according to an embodiment of the present invention includes: a demux unit for receiving a terrestrial broadcast signal and generating a terrestrial signaling signal; a signaling converter that parses the terrestrial signaling signal and converts it into a cable signaling signal; and a cable multiplexer that multiplexes the cable signaling signal to generate a cable broadcasting signal, and a cable modulation unit that modulates the cable broadcasting signal and transmits it to a cable broadcasting network.

Description

Broadcast signal conversion apparatus and method {APPARATUS FOR CONVERTING BROADCASTING SIGNAL METHOD FOR USING THE SAME}

The present invention relates to broadcast communication technology, and more particularly, to a technology for converting a terrestrial broadcast signal into a cable broadcast signal for retransmission over a cable network.

Terrestrial or cable digital broadcasting, which is currently called DTV, is based on PSI (Program Specific Information) defined by MPEG (Moving Picture Experts Group) and PSIP (Program and System Information Protocol) standard defined by ATSC (Advanced Television Systems Committee). It is transmitted to each DTV receiver through the signaling signal of

In this case, 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.

The recently appeared terrestrial UHDTV broadcasting service can be provided by a signaling method newly defined as ATSC 3.0 without using the above signaling method. This ATSC 3.0-based signaling method is IP service friendly and is defined to minimize the correlation between service providing layers. This is because the ATSC 3.0 transport protocol includes a broadband domain, and all of them aim at IP-based content transmission. In addition, while transport in current DTV consists of one area as MPEG-2 TS, in UHDTV based on ATSC 3.0, AV media is divided into several areas such as MPU/DASH, MMT/ROUTE, UDP, and IP. There are many differences in the signaling configuration as it is transmitted.

Meanwhile, Korean Patent Laid-Open No. 10-2014-0090288 "UHD terrestrial broadcasting retransmission device through cable broadcasting network" converts main terrestrial broadcasting data corresponding to low-spec UHD images into high-spec UHD images according to the viewer's choice to create a cable broadcasting network. Disclosed is a device for retransmitting Ultra High Definition (UHD)-class terrestrial broadcasting that can be retransmitted through

However, Korean Patent Laid-Open No. 10-2014-0090288 has a limitation 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 broadcasting service as a cable broadcasting service through a cable network.

Another object of the present invention is to convert a terrestrial broadcasting signal into a cable broadcasting signal in consideration of whether the transmission protocol area and the cable network are suitable.

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

According to an embodiment of the present invention, there is provided a broadcast signal conversion apparatus comprising: a demux unit for receiving a terrestrial broadcast signal and generating a terrestrial signaling signal; a signaling converter that parses the terrestrial signaling signal and converts it into a cable signaling signal; and a cable multiplexer that multiplexes the cable signaling signal to generate a cable broadcasting signal, and a cable modulation unit that modulates the cable broadcasting signal and transmits it to a cable broadcasting network.

In this case, when the demux unit receives the terrestrial broadcast signal through the wireless network, the demodulation is performed to generate a baseband signal, and the baseband depacketizing and ATSC link are performed on the baseband signal. -Layer PROTOCOL, ALP) depacketizing may be performed to generate the terrestrial signaling signal.

In this case, when the demux unit receives the terrestrial broadcast signal through a wired network, it may perform demultiplexing to generate a terrestrial signaling signal corresponding to each IP format.

At this time, the signaling converter obtains information on the location of the SLS (Service Layer Signaling) signal from the information parsed the LLS (Low Level Signaling) signal of the terrestrial signaling signal, and demultiplexes the SLS signal corresponding to the location information. It may make a request to the unit, parse the SLS signal, and transmit information parsed by the SLS signal to the demux unit.

In this case, the demux unit may generate a terrestrial broadcast media signal based on information parsed by the SLS signal.

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

In this case, the signaling converter may generate the cable signaling signal using the LLS signal and the SLS signal parsed information and pre-stored cable basic information.

In this case, the signaling converter 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 broadcasting media signal into one stream.

In this case, the cable multiplexer may additionally multiplex the external media signal and the additional data signal input by the user into the one stream.

In this case, the cable multiplexer may generate the cable broadcasting signal by multiplexing the one stream into an MPEG-2 stream or an IP packet format.

In addition, a broadcast signal conversion method according to an embodiment of the present invention for achieving the above object is a method of using a broadcast signal conversion apparatus, the method comprising: receiving a terrestrial broadcast signal and generating a terrestrial signaling signal; parsing the terrestrial signaling signal and converting it 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 may include obtaining information on the location of a Service Layer Signaling (SLS) signal from information parsing a Low Level Signaling (LLS) signal of the terrestrial signaling signal, and converting the SLS signal corresponding to the location information to the terrestrial wave. It is possible to obtain from the signaling signal and parse the obtained SLS signal.

In this case, the converting may generate a terrestrial broadcast media signal based on the information parsed by the SLS signal.

In this case, the converting may include converting the format of the terrestrial broadcasting media signal into a cable broadcasting media signal.

In this case, the converting may generate the cable signaling signal by using the LLS signal and the SLS signal parsed information and pre-stored cable basic information.

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

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

In this case, in the generating of the cable broadcasting signal, an external media signal input by a user and an additional data signal may be additionally multiplexed into the one stream.

In this case, the generating of the cable broadcasting signal may include generating the cable broadcasting signal by multiplexing the one stream into an MPEG-2 stream or an IP packet format.

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

In addition, according to the present invention, the terrestrial broadcast signal can be converted into a cable broadcast signal in consideration of whether the transmission protocol area and the cable network are suitable.

Also, 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 broadcast signal conversion process according to an embodiment of the present invention.
3 is a block diagram illustrating an apparatus for converting a broadcast signal according to an embodiment of the present invention.
FIG. 4 is a detailed block diagram illustrating an example of the signaling converter shown in FIG. 3 .
5 is an operation flowchart illustrating a broadcast signal conversion method according to an embodiment of the present invention.
6 is a detailed operation flowchart illustrating an example of the signaling signal conversion step shown in FIG. 5 .

The present invention will be described in detail with reference to the accompanying drawings as follows. Here, repeated descriptions, well-known functions that may unnecessarily obscure the gist of the present invention, and detailed descriptions of configurations will be omitted. The embodiments of the present invention are provided in order to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer description.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

In addition, terms such as "... unit", "... group", and "module" described in the specification mean a unit that processes at least one function or operation, which is hardware or software or a combination of hardware and software. can be implemented as

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 the ATSC 3.0 broadcast standard and the domestic UHD broadcast transmission/reception matching standard.

1, the ATSC 3.0 North American standard and the domestic UHD broadcasting standard may include a transport protocol called MMTP for transmitting MPU through a broadcasting network and a ROUTE/DASH transport protocol for transmitting DASH segments and NRT files. Also, like ROUTE/DASH, DASH segment and NRT files may be transmitted through TCP/IP through a broadband network.

In this case, the broadcast myth conversion apparatus and method according to an embodiment of the present invention 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 broadcast signal conversion process according to an embodiment of the present invention.

Referring to FIG. 2 , in the broadcast signal conversion process according to an embodiment of the present invention, the antenna 10 may receive the terrestrial broadcast signal 20 transmitted over the air and transmit it to the broadcast signal conversion apparatus 100 .

In addition, the terrestrial broadcast signal 30 that is not modulated based on IP may be received through a wire.

In this case, the terrestrial broadcast signal may correspond to the terrestrial UHDTV broadcast signal.

In this case, the broadcast signal conversion apparatus 100 may convert the terrestrial broadcast signals 20 and 30 into a cable broadcast signal 40 and retransmit it through a cable network.

In this case, the broadcast signal conversion apparatus 100 may receive a wireless RF signal or an IP signal, which is the terrestrial broadcast signal 20 , 30 , convert the signal form to match the wired cable broadcast signal 40 , and transmit it to the cable network. .

A terrestrial broadcast signal according to an embodiment of the present invention may 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 first received LLS uses the fixed IP address and port number as 224.0.23.60 and 4937, and is mainly used to deliver signaling information related to bootstrapping for fast channel scan and service acquisition. can

In addition, in the SLS obtained through parsing of the LLS, information necessary to provide broadcast services, such as component information constituting each service, a content acquisition method, and receiver capability required for service provision, is defined for each broadcast service and transmitted to the receiver. can be transmitted.

That is, the broadcast signal conversion apparatus 100 according to an embodiment of the present invention may first parse an LLS signal transmitted through a separate transmission path, and through this, extract and extract an SLS signal containing information for each service. can be parsed.

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

Referring to FIG. 3 , the broadcast signal conversion apparatus 100 according to an embodiment of the present invention includes a demux unit 110 , a signaling conversion unit 130 , a media conversion unit 140 , a cable multiplexer 150 and and a cable modulation unit 160 .

The demux unit 110 may receive a terrestrial broadcast signal and generate a terrestrial signaling signal.

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

In this case, the demux unit 110 may perform demodulation based on the ATSC 3.0 standard on the terrestrial broadcast signal received through the wireless network to output the baseband signal.

At this time, the demux unit 110 performs baseband depacketizing and ALP (ATSC Link-Layer PROTOCOL, ALP) depacketizing on the baseband signal to generate a terrestrial signaling signal corresponding to the IP stream. may be

In this case, the demux unit 110 may perform depacketizing to generate a signaling signal, a video, and an audio media signal corresponding to each IP format.

Also, when receiving a terrestrial broadcast signal through IP over a wire, the demux unit 110 may directly output an IP stream by performing demultiplexing.

In this case, the demux unit 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 converter 130 may parse the terrestrial signaling signal and convert it into a cable signaling signal.

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

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

In this case, the signaling conversion unit 130 may parse the LLS signal and request the SLS signal including the service configuration information necessary for providing the broadcast service from the demux unit 110 using the information parsed from the LLS signal.

In this case, the demux unit 110 may transmit the requested SLS signal to the signaling conversion unit 130 .

In this case, the signaling conversion unit 130 may parse the SLS signal and transmit the parsed information of the SLS signal to the demux unit 110 .

In this case, the demux unit 110 may generate a terrestrial broadcast media signal based on information parsing the SLS signal.

In this case, the demux unit 110 may transmit the generated terrestrial broadcast media signal to the media conversion unit 140 .

In this case, the terrestrial broadcast media signal may include video media and audio media.

In this case, the signaling converter 130 may generate a cable signaling signal by using the LLS signal and the SLS signal parsed information and pre-stored cable basic information.

In this case, the cable signaling signal may correspond to a cable PSI/PSIP signal, and may become a next-generation cable broadcasting signaling signal in the future.

In this case, the signaling converter 130 may generate a cable signaling signal by further using user input information for adding a cable media signal or modifying cable transmission information from an external input signal.

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

In this case, the signaling converter 130 may transmit the controlled cable signaling signal to the cable multiplexer 150 .

The media converter 140 may convert a format of a terrestrial broadcast media signal into a cable broadcast media signal.

In this case, the media converter 140 may convert the format of the media signal using various methods.

For example, the media converter 140 may decode a terrestrial broadcast media signal into an analog signal and then encode the terrestrial broadcast media signal back 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 generate a cable broadcasting signal by multiplexing the cable signaling signal.

In this case, the cable multiplexer 150 may multiplex the cable signaling signal and the cable broadcasting media signal into one stream.

In this case, the cable multiplexer 150 may additionally multiplex the external media signal and the additional data signal input by the user into one stream.

In this case, the cable multiplexer 150 may generate a cable broadcasting signal by multiplexing one stream into an MPEG-2 stream or an IP packet format.

In this case, the cable multiplexer 150 may stream a cable broadcast signal in another format according to future technology development.

The cable modulation unit 160 may modulate a cable broadcasting signal and transmit it to a cable broadcasting network.

In this case, the cable modulation unit 160 may modulate an RF signal suitable for a cable broadcasting network.

FIG. 4 is a detailed block diagram illustrating an example of the signaling converter shown in FIG. 3 .

Referring to 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 , and a cable PSI/PSIP generation unit. 135 and a cable PSI/PSIP transmission unit 135 .

Since the signaling conversion unit 130 may define a terrestrial broadcast signal as LLS and SLS service signaling in two stages, the LLS parsing unit 131 and the SLS parsing unit 132 are independently configured to convert the LLS signal and the SLS signal. can be parsed.

The LLS parsing unit 131 may parse the LLS signal by first requesting the LLS signal from the demux unit 110 , and may store the parsing information of the LLS signal in the parsing information storage unit 133 .

The parsing information storage unit 133 may determine the location of the SLS signal by using the information parsed by the LLS signal, and may transmit it to the SLS parsing unit 132 .

The SLS parsing unit 132 may parse the SLS signal by requesting the SLS signal from the demux unit 110 using the location of the received SLS signal, and the parsing information storage unit 133 parses the SLS signal. can be stored in

The parsing information storage unit 133 may transmit the stored LLS signal and information parsed with the SLS signal to the demux unit 110 , the media conversion unit 140 , and the cable PSI/PSIP generation unit 135 .

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

The cable PSI/PSIP generator 135 may generate a cable signaling signal using information parsed from the LLS signal and the SLS signal and pre-stored basic cable information.

In this case, the cable signaling signal may correspond to a cable PSI/PSIP signal, and may become a next-generation cable broadcasting signaling signal in the future.

In this case, the cable PSI/PSIP generating unit 135 may generate a cable signaling signal by further using user input information for adding a cable media signal or modifying cable transmission information from an external input signal.

For example, the cable PSI/PSIP transmission unit 135 uses information parsed from the LLS signal and the SLS signal to provide a broadcast stream unique ID, a main channel number, a sub-channel number, language information, and time information to the cable signaling signal. configurable.

At this time, the cable PSI/PSIP transmission unit 135 configures the transmission frequency and modulation mode in the cable signaling signal for transmission to the cable network using the cable basic information pre-stored in the cable basic information storage unit 134 . can

In this case, the cable PSI/PSIP transmission unit 135 may configure the total number of programs for adding media and media information to the cable signaling signal using the user input information received from the user.

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 cable PSI/PSIP transmission unit 136 may control the cable signaling signal in consideration of the transmission period and the transmission order.

In this case, the cable PSI/PSIP transmitter 136 may transmit the controlled cable signaling signal to the cable multiplexer 150 .

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

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

That is, in step S210, a terrestrial signaling signal may be generated by first receiving a terrestrial broadcast signal.

In this case, in step S210, a terrestrial broadcast signal received through the antenna 10 may be received, or an IP-based unmodulated terrestrial broadcast signal may be input through a wire.

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

In this case, in step S210, the demodulation based on the ATSC 3.0 standard may be performed on the terrestrial broadcast signal received through the wireless network to output the baseband signal.

At this time, in step S210, baseband depacketizing and ATSC Link-Layer PROTOCOL (ALP) depacketizing are performed on the baseband signal to generate a terrestrial signaling signal corresponding to the IP stream. .

In this case, in step S210, a signaling signal, a video, and an audio media signal corresponding to each of the IP formats may be generated by performing depacketizing.

In addition, in step S210, when a terrestrial broadcast signal is received through IP over a wire, demultiplexing may be performed to output an IP stream immediately.

In this case, in step S210, a signaling signal, a video signal, and an audio media signal corresponding to each of the IP formats may be generated by performing demultiplexing.

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

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

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

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

The SLS signal may include service configuration information required to provide a broadcast service.

In this case, in step S221 , the LLS signal may be parsed first, and information obtained by parsing the LLS signal may be stored.

In this case, in step S221 , the location of the SLS signal may be determined using the information parsed from the LLS signal, and the SLS signal may be requested using the location of the SLS signal.

In this case, in step S221 , the SLS signal may be parsed and information obtained by parsing the SLS signal may be stored.

In this case, step S221 may generate a terrestrial broadcast media signal based on the information parsed from 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 the LLS signal and the SLS signal parsed information and pre-stored basic cable information.

In this case, the cable signaling signal may correspond to the cable PSI/PSIP signal.

In this case, step S222 may generate a cable signaling signal by further using user input information for adding a cable media signal or modifying cable transmission information from an external input signal.

For example, in step S222, a broadcast stream unique ID, a main channel number, a sub-channel number, language information, time information, etc. may be configured in the cable signaling signal using the LLS signal and the information parsed from the SLS signal.

In this case, in step S222, the transmission frequency and modulation mode 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 media and media information may be configured in the cable signaling signal using the user input information received from the user.

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

In this case, step S222 may output a controlled cable signaling signal.

Also, in step S220, the media format may be converted (S223).

That is, in step S223, a format of a terrestrial broadcast media signal may be converted into a cable broadcast media signal.

In this case, step S223 may be performed after step S221.

In this case, in step S223, the format of the media signal may be converted using various methods.

For example, in step S223, the terrestrial broadcast media signal may be decoded into an analog signal and then encoded again 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 addition, step S223 is not after step S222, but after parsing the SLS signal in step S221, the media conversion unit 140

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

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

In this case, in step S230, the cable signaling signal and the cable broadcasting media signal may be multiplexed into one stream.

In this case, in step S230, the external media signal and the additional data signal input by the user may be additionally multiplexed into one stream.

In this case, in step S230, a cable broadcasting signal may be generated by multiplexing one stream into an MPEG-2 stream or an IP stream format.

In this case, in step S230, a cable broadcasting signal may be streamed in another format according to future technological development.

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

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

In this case, step S240 may be modulated with an RF signal suitable for the cable broadcasting network.

As described above, in the apparatus and method for converting a broadcast signal according to an embodiment of the present invention, the configuration and method of the embodiments described above are not limitedly applicable, but the embodiments are provided so that various modifications can be made. All or part of each embodiment may be selectively combined and configured.

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 unit

Claims (20)

a demux unit for receiving a terrestrial broadcast signal and generating a terrestrial signaling signal;
a signaling converter that parses the terrestrial signaling signal and converts it into a cable signaling signal;
a cable multiplexer multiplexing the cable signaling signal to generate a cable broadcasting signal;
a cable modulation unit that modulates the cable broadcasting signal and transmits it to a cable broadcasting network; and
a media converter for converting a format of a terrestrial broadcast media signal into a cable broadcast media signal;
including,
The signaling conversion unit
obtaining location information of a Service Layer Signaling (SLS) signal corresponding to information parsing a Low Level Signaling (LLS) signal of the terrestrial signaling signal;
Requesting and obtaining the SLS signal corresponding to the location information from the demux unit, parsing the obtained SLS signal and transmitting the parsed information of the SLS signal to the demux unit
The demux unit
generating the terrestrial broadcast media signal based on the information parsing the SLS signal;
The cable multiplexing unit
and generating the cable broadcasting signal by multiplexing the cable broadcasting media signal converted from the format of the terrestrial broadcasting media signal by the media converter into one stream. The method according to claim 1,
The demux unit
When the terrestrial broadcast signal is received through a wireless network, demodulation is performed to generate a baseband signal, and the baseband signal is subjected to baseband depacketizing and ATSC Link-Layer PROTOCOL (ALP) depacketization. A broadcast signal conversion apparatus, characterized in that by performing titling to generate the terrestrial signaling signal. 3. The method according to claim 2,
The demux unit
When the terrestrial broadcast signal is received through a wired network, demultiplexing is performed to generate the terrestrial signaling signal corresponding to each IP format. delete delete delete delete 4. The method according to claim 3,
The signaling conversion unit
and generating the cable signaling signal using information parsed from the LLS signal and the SLS signal and pre-stored basic cable information. 9. The method of claim 8,
The signaling conversion unit
A broadcast signal conversion apparatus, characterized in that the cable signaling signal is controlled in consideration of a transmission period and a transmission order. delete 10. The method of claim 9,
The cable multiplexing unit
The apparatus for converting a broadcast signal, characterized in that the one stream is further multiplexed with an external media signal and an additional data signal input by a user. 12. The method of claim 11,
The cable multiplexing unit
and generating the cable broadcasting signal by multiplexing the one stream into any one of an MPEG-2 stream and an IP stream. A method of using a broadcast signal conversion apparatus, comprising:
generating a terrestrial signaling signal by receiving a terrestrial broadcast signal;
parsing the terrestrial signaling signal and converting it 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;
including,
The converting step is
obtaining location information of a Service Layer Signaling (SLS) signal corresponding to information parsing a Low Level Signaling (LLS) signal of the terrestrial signaling signal;
obtaining an SLS signal corresponding to the location information, and parsing the SLS signal by parsing the obtained SLS signal;
generating the terrestrial broadcast media signal based on the information parsing the SLS signal;
The generating of the cable broadcasting signal comprises:
and generating the cable broadcasting signal by multiplexing the cable broadcasting media signal converted from the format of the terrestrial broadcasting media signal and the cable signaling signal into one stream. delete delete delete delete 14. The method of claim 13,
The converting step is
and generating the cable signaling signal using information parsed from the LLS signal and the SLS signal and pre-stored basic cable information. 19. The method of claim 18,
The converting step is
A broadcast signal conversion method, characterized in that the cable signaling signal is controlled in consideration of a transmission period and a transmission order. delete

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