KR20180070462A - Apparatuse for retransmitting atsc 3.0 digital tv broadcast and method thereof - Google Patents

Abstract

Disclosed are an apparatus for retransmitting an ATSC 3.0 digital TV broadcast and methods thereof. According to an embodiment, the retransmission apparatus includes: a receiver for selectively receiving at least one among a digital broadcasting signal based on Advanced Television System Committee (ATSC) 3.0 and an Internet protocol (IP) packet; a controller for creating a Moving Picture Experts Group-2 Transport Stream (MPEG-2 TS) packet by converting an audio/video (A/V) packet and signaling information on the basis of an output signal of the receiver to be received by a second network, and extracting and providing information related to a broadcast program so that a system information (SI) system of a digital broadcasting head-end may create an SI table related to the broadcast program converted into MPEG-2 TS; and a transmitter for transmitting a broadcast data converted from the MPEG-2 TS packet and information related to the broadcast program through the second network. The embodiments may provide a technique of converting and retransmitting an ATSC 3.0-based digital broadcast as a conventional broadcast based on MPEG-2 TS.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an ATSC 3.0 digital TV broadcast retransmission apparatus,

The following embodiments relate to an ATSC 3.0 digital TV broadcast retransmission apparatus and method thereof.

Conventional digital TV broadcasting systems such as terrestrial, cable, and satellite transmit video, audio, and additional data in the MPEG-2 Transport Stream (TS) transmission format for real-time transmission of digital broadcasting.

In recent years, the consumption of broadcast contents using portable smart terminals capable of IP connection around the world is rapidly increasing. In addition, broadcasters and consumer electronics companies are increasingly interested in high-capacity UHD broadcasting services.

The ATSC 3.0 broadcasting standard, which was established in North America, aims to improve the transmission capacity by changing the transmission method of the physical layer so that a large capacity UHD broadcasting contents can be transmitted through the terrestrial broadcasting network, Based broadcasting contents transmission method in order to provide more efficient and compatible broadcasting service by using both broadcasting service and broadband network.

The digital broadcasting retransmission system is mainly used for relaying broadcasts between heterogeneous networks. For example, the digital broadcasting retransmission system transmits digital terrestrial or satellite broadcasting received through an antenna of a dwelling house to each household through a joint reception facility for common viewing, or transmits digital terrestrial broadcasting received by a cable broadcasting station to a digital cable transmission network As shown in FIG.

However, digital broadcasting based on the recently standardized ATSC 3.0 standard can not use the existing digital broadcasting retransmission system because the modulation method, video and audio compression and transmission method, and broadcasting signaling method are different from the existing digital broadcasting method.

Embodiments can provide a technique of converting an ATSC 3.0-based digital broadcast into an existing MPEG-2 TS-based broadcast and retransmitting the same.

In addition, the embodiments can provide a technique for watching digital broadcasting of a new type while using existing IPTV, cable and satellite broadcasting receivers intact.

A retransmission apparatus according to an exemplary embodiment includes a receiver for selectively receiving at least one of an ATSC (Advanced Television System Committee) 3.0 digital broadcasting signal and an IP (Internet Protocol) packet input through a first network, 2 TS (Moving Picture Experts Group-2 Transport Stream) packet by converting an audio / video (A / V) packet and signaling information so as to be receivable in a second network based on a signal, A TS (System Information) system of the present invention extracts and provides broadcast program related information so as to generate an SI table related to a broadcast program converted into an MPEG-2 TS; And a transmitter for transmitting the broadcast program related information through the second network.

The ATSC 3.0 based digital broadcast signal may be an ATSC 3.0 based RF signal.

The broadcast data may be at least one of the second network-based digital broadcast signal modulating the MPEG-2 TS packet, and the second network-based IP packet converting the MPEG-2 TS packet.

The receiver may include an IP input interface for receiving the ATSC 3.0 based IP packet, and a demodulator for demodulating the ATSC 3.0 based RF signal and extracting the ATSC 3.0 based IP packet.

The controller analyzes the ATSC 3.0 based IP packet and extracts video and voice packets. The ATSC 3.0 A / V demultiplexer analyzes the ATSC 3.0 based signaling information and extracts the MPEG 2 signaling analyzer and converter for generating TS-based Program and System Information Protocol (PSIP) tables and extracting and providing the broadcast program related information; and a compression and decompression unit for compressing the video and audio packets based on the MPEG- 2 codec for converting and multiplexing video and audio packets based on the MPEG-2 TS and a PSIP table based on the MPEF-2 TS into the MPEG-2 TS packets, TS demultiplexer.

The transmitter includes a modulator for converting the MPEG-2 TS packet into an RF signal based on the MPEG-2 TS, a transmitter for converting the MPEG-2 TS packet into an IP packet based on the MPEG-2 TS, And an IP output interface for transmitting the related information to the SI system.

The ATSC 3.0 A / V demultiplexer can extract the video and voice packets by analyzing LLS (Low Level Signaling), SLT (Service List Table) and SLS (Service Level Signaling) from the ATSC 3.0 based IP packet .

The ATSC 3.0 A / V demultiplexer transmits a User Service Bundle Description (USBD), a Service-based Transport Session Instance Description (S-TSID), and a Media Processing Descriptor (MPD) when the video and voice packets are transmitted in ROUTE Extracts the video and audio packets and extracts the video and audio packets by analyzing the USBD and MP Table (MMT Package Table) when the video and audio packets are transmitted in the MMTP (MPEG Media Transport Protocol) can do.

The ATSC 3.0-based IP packet may include the USBD, the S-TSID, the MPD, and the MP table.

The SLT includes a service identification (ID), a service name, a protocol type, a PLP (Product Liability Prevention) number, an IP address, a port number, a major channel number, a minor channel number, Short Service Name) information.

The PSIP table may include a master guide table (MGT), a virtual channel table (VCT), a rating region table (RRT), a system time table (STT), an event information table (EIT) .

Wherein the codec converter converts the compression method of the video packet into at least one of MPEG-2, AVC (Advanced Video Coding) and HEVC (High Efficiency Video Codec), which is a compression method of the MPEG-2 TS- It is possible to convert the compression scheme of the packet into at least one of MPEG-2 and AC3 (Audio Codec 3), which is a compression scheme of the audio packet based on the MPEG-2 TS.

A method of retransmitting according to an exemplary embodiment includes selectively receiving at least one of an ATSC (Advanced Television System Committee) 3.0 based digital broadcasting signal and an IP (Internet Protocol) packet input through a first network, (Audio / Video) packet and signaling information so as to be receivable in the second network, generates an MPEG-2 Moving Picture Experts Group-2 Transport Stream (TS) packet, Extracting and providing broadcast program related information so that the system information system can generate an SI table related to a broadcast program converted into an MPEG-2 TS; And transmitting the program-related information through the second network.

The ATSC 3.0 based digital broadcast signal may be an ATSC 3.0 based RF signal.

The broadcast data may be at least one of the second network-based digital broadcast signal modulating the MPEG-2 TS packet, and the second network-based IP packet converting the MPEG-2 TS packet.

The receiving step may include receiving the IP packet based on the ATSC 3.0, demodulating the RF signal based on the ATSC 3.0, and extracting the IP packet based on the ATSC 3.0.

The method includes the steps of: extracting video and voice packets by analyzing the IP packet based on the ATSC 3.0; analyzing the signaling information based on the ATSC 3.0; extracting, from the signaling information based on the ATSC 3.0, And extracting and providing the broadcast program related information, and a step of compressing the video and audio packet based on the MPEG-2 TS-based video and audio packet compression method And converting and multiplexing the MPEG-2 TS-based video and audio packets and the MPEF-2 TS-based PSIP table into the MPEG-2 TS packets.

The transmitting step may include converting the MPEG-2 TS packet into an MPEG-2 TS based RF signal, converting the MPEG-2 TS packet into an IP packet based on the MPEG-2 TS, And transmitting the broadcast program related information to the SI system.

The step of extracting the video and audio packet includes extracting the video and audio packet by analyzing LLS (Low Level Signaling), SLT (Service List Table) and SLS (Service Level Signaling) from the ATSC 3.0 based IP packet . ≪ / RTI >

Wherein the extracting comprises analyzing a User Service Bundle Description (USBD), a Service-based Transport Session Instance Description (S-TSID) and a Media Processing Descriptor (MPD) when the video and audio packets are transmitted in ROUTE manner, Extracting the video and voice packets by analyzing the USBD and MP tables (MMT Package Table) when the video and audio packets are transmitted in the MMTP (MPEG Media Transport Protocol) . ≪ / RTI >

The ATSC 3.0-based IP packet may include the USBD, the S-TSID, the MPD, and the MP table.

The SLT includes a service identification (ID), a service name, a protocol type, a PLP (Product Liability Prevention) number, an IP address, a port number, a major channel number, a minor channel number, Short Service Name) information.

The PSIP table may include a master guide table (MGT), a virtual channel table (VCT), a rating region table (RRT), a system time table (STT), an event information table (EIT) .

Converting the compression scheme of the video packet into at least one of MPEG-2, AVC and HEVC, which is a compression scheme of the MPEG-2 TS-based video packet, and compressing the audio packet according to the MPEG- 2 < / RTI > and AC3, which is a compression scheme of a TS-based voice packet.

1 shows a schematic block diagram of a retransmission system according to an embodiment.
FIG. 2 shows a broadcast standard protocol stack according to an example of the first network shown in FIG.
3 is a schematic block diagram of the retransmission apparatus shown in FIG.
FIG. 4 is a flowchart illustrating an example of an operation of extracting video and audio packets of the ATSC 3.0 A / V demultiplexer shown in FIG.
FIG. 5 is a flowchart for explaining an example of the ATSC 3.0 signaling analysis shown in FIG. 3 and the PSIP generation operation of the converter.

Specific structural or functional descriptions of the embodiments of the present invention disclosed herein are merely illustrative for purposes of illustrating other embodiments of the inventive concept, May be embodied in various forms and are not limited to the embodiments described herein.

Other embodiments of the inventive concept may be made without departing from the spirit and scope of the invention, as various changes may be made and the embodiments may be varied in many ways. However, it is not intended to limit the embodiments according to the concepts of the present invention to the specific disclosure forms, but includes changes, equivalents, or alternatives falling within the spirit and scope of the present invention.

The terms first, second, or the like may be used to describe various elements, but the elements should not be limited by the terms. The terms may be named for the purpose of distinguishing one element from another, for example without departing from the scope of the right according to the concept of the present invention, the first element being referred to as the second element, Similarly, the second component may also be referred to as the first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It will be understood that, in this specification, the terms " comprises ", or " having ", and the like are to be construed as including the presence of stated features, integers, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the scope of the patent application is not limited or limited by these embodiments. Like reference symbols in the drawings denote like elements.

1 shows a schematic block diagram of a retransmission system according to an embodiment. FIG. 2 shows a broadcast standard protocol stack according to an example of the first network shown in FIG.

Referring to FIGS. 1 and 2, a retransmission system 10 includes a retransmission apparatus 100, a first network 200, and a second network 300.

The retransmission apparatus 100 may selectively receive at least one of a digital broadcasting signal and an IP (Internet Protocol) packet based on the first network 200 transmitted from the first network 200.

Thereafter, the retransmission apparatus 100 generates a digital broadcast signal and an IP packet based on the second network 300 suitable for the second network 300 based on at least one selectively received, Based digital broadcast signals and IP packets to the second network 300. [

For example, the digital broadcasting signal and the IP (Internet Protocol) packet based on the first network 200 may be an ATSC (Advanced Television System Committee) 3.0 based digital broadcasting signal and an IP packet. 2, the first network 200 follows the ATSC 3.0 broadcast standard protocol stack, and the digital broadcasting signals and IP (Internet Protocol) packets based on the first network 200 are transmitted through the ATSC 3.0 broadcast standard protocol stack And then transmitted to the retransmission apparatus 100. At this time, the digital broadcasting signal and the IP (Internet Protocol) packet based on the second network 300 are converted into a digital broadcasting signal based on MPEG-2 TS suitable for MPEG-2 TS (Moving Picture Experts Group-2 Transport Stream) Protocol) packet.

(Not shown) for generating and transmitting an ATSC 3.0-based digital broadcast signal and an IP (Internet Protocol) packet are connected to the first network 200 and an MPEG-2 TS- A target device (e.g., a digital broadcast receiver; not shown) capable of receiving a broadcast signal and an IP (Internet Protocol) packet can be connected. That is, the retransmission apparatus 100 can convert and retransmit a signal so that an existing target apparatus using the MPEG-2 TS scheme can view an ATSC 3.0-based digital broadcast.

Hereinafter, the configuration and operation of the retransmission apparatus 100 will be described in detail with reference to FIGS. 3 to 5

3 is a schematic block diagram of the retransmission apparatus shown in FIG.

Referring to FIG. 3, the retransmission apparatus 100 includes a receiver 110, a controller 130, and a transmitter 150.

The receiver 110 may selectively receive at least one of a digital broadcasting signal and an IP (Internet Protocol) packet based on the first network 200.

The receiver 110 may include a demodulator 110-1 and an IP input interface 110-3. For example, the receiver 110 may receive a signal through at least one of the demodulator 110-1 and the IP input interface 110-3 under the control of the controller 130. For example,

The demodulator 110-1 can receive the digital broadcasting signal based on the first network 200. [ For example, the digital broadcasting signal based on the first network 200 may be an ATSC 3.0 based digital broadcasting signal and an ATSC 3.0 based RF signal.

The demodulator 110-1 demodulates the received digital broadcasting signal and extracts an IP packet including ROUTE (Real-time Object Delivery over Unidirectional Transport) or MMTP (MPEG Media Transport Protocol) from the demodulated digital broadcasting signal can do. The demodulator 110-1 may output the extracted IP packet to the controller 130. [

The IP input interface 110-3 may receive the IP packet based on the first network 200 and output the IP packet to the controller 130. [ At this time, the IP packet based on the first network 200 may be an IP packet based on ATSC 3.0, an IP packet including ROUTE (Real-time Object Delivery over Unidirectional Transport) or MMTP (MPEG Media Transport Protocol).

The IP packet extracted from the demodulator 110-1 and the IP packet received from the IP input interface 110-3 may be IP packets having the same structure.

The controller 130 can control the overall operation of the retransmission apparatus 100. [ For example, the controller 130 may control the operation of each of the components 110 and 150.

The controller 130 also receives the output signal of the receiver 110, for example, the IP packet extracted from the demodulator 110-1 or the IP packet received from the IP input interface 110-3, 300) based on the first network 300 and the IP packet.

At this time, the IP packet may include an LLS (Low Level Signaling) packet including basic information for channel and service gain, and a SLS (Service Layer Signaling) packet including service configuration information. The IP packet may further include a User Service Bundle Description (USBD), a Service-based Transport Session Instance Description (S-TSID), a Media Processing Descriptor (MPD), and an MP Table (MMT Package Table).

For example, the LLS packet may include at least one of Service List Table (SLT), Rating Region Table (RRT), and System Time.

At this time, the SLT includes a service identification (ID), a service name, a protocol type, a PLP (Product Liability Prevention) number, an IP address, a port number, A Minor Channel Number, a Short Channel Name, and a Short Channel Name.

In addition, the RRT may include information on a rating level standard applicable to each region and country, and the System Time may include time information of International Atomic Time (TAI).

The controller 130 includes an ATSC 3.0 audio / video demultiplexer 130-1, an ATSC 3.0 signaling analyzer 130-2, a codec converter 130- 3), and an MPEG-2 TS remultiplexer (MPEG-2 TS re-multiplexer 130-4).

The ATSC 3.0 A / V demultiplexer 130-1 can extract video and voice packets by analyzing IP packets.

For example, the ATSC 3.0 A / V demultiplexer 130-1 can extract video and voice packets by analyzing LLS, SLT, and SLS packets. The video and audio packet extraction operation of the ATSC 3.0 A / V demultiplexer 130-1 will be described later in detail with reference to FIG.

The ATSC 3.0 A / V demultiplexer 130-1 can output the extracted video and audio packets to the codec converter 130-3.

The ATSC 3.0 signaling analysis and converter 130-2 can analyze the broadcast signaling information included in the received IP packet. For example, the ATSC 3.0 signaling analysis and converter 130-2 extracts and analyzes the LLS packet to obtain SLT, RRT, and System Time information, and extracts SLS information and ESG (Electronic Service Guide) information using SLT information And analysis.

The ATSC 3.0 signaling analysis and converter 130-2 may convert the signaling information. For example, the ATSC 3.0 signaling analysis and converter 130-2 may convert ATSC 3.0 based signaling information into a Program and System Information Protocol (PSIP) table used in existing digital broadcasts.

Specifically, the ATSC 3.0 signaling analysis and converter 130-2 can generate a PSIP table by analyzing LLS, SLT, RRT, System Time, and SLS packets. For example, the PSIP table may be a program and system information protocol of a digital broadcasting system based on MPEG-2 TS. The PSIP table generation operation of the ATSC 3.0 signaling analysis and converter 130-2 will be described later with reference to FIG.

The ATSC 3.0 signaling analysis and conversion unit 130-2 analyzes SI of the existing digital broadcasting headend so that the system information (SI) of the existing digital broadcasting headend can generate an SI table related to the broadcasting program converted into the MPEG- The system can provide broadcast program related information.

For example, the ATSC 3.0 signaling analysis and converter 130-2 analyzes the SLT and SLS packets to determine whether the SI of the digital broadcast headend is capable of generating an SI table associated with a broadcast program converted to an MPEG- 3.0 signaling information and ESG (Electronic Service Guide) information to the SI system of the existing digital broadcasting head end. At this time, the ATSC 3.0 signaling analysis and converter 130-2 can extract the ESG information by parsing the SLT included in the LLS packet and grasping the route through which the ESG is transmitted.

The ATSC 3.0 signaling analysis and conversion unit 130-2 includes a service ID, a major channel number, a minor channel number, and a service name included in the SLT so that an SI system of an existing digital broadcast headend can generate a VCT (Virtual Channel Table) Value to the SI system of the existing digital broadcast headend

The ATSC 3.0 signaling analysis and conversion unit 130-2 includes an ATSC 3.0 signaling analysis and conversion unit 130-2 that is included in the service fragment of the ATSC 3.0-based ESG so that the SI system of the existing digital broadcasting headend can generate an EIT (Event Information Table) It is possible to transmit the Name, Description, and ContentAdvisory values included in the Content ID, startTime, endTime, duration, and Content Fragment included in the Major Channel No., Minor Channel No., and Schedule Fragment to the SI system of the existing digital broadcasting headend.

The ATSC 3.0 signaling analysis and converter 130-2 may output the generated PSIP table to the MPEG-2 TS remultiplexer 130-4. The ATSC 3.0 signaling analysis and conversion unit 130-2 can output information for generating the SI table, that is, information related to the broadcast program, to the SI system of the digital broadcast headend.

The codec converter 130-3 can convert the compression method of the video and audio packets into the compression method of the video and audio packets based on the MPEG-2 TS. For example, the codec converter 130-3 may compress the video packet using at least MPEG-2, AVC (Advanced Video Coding), and HEVC (High Efficiency Video Codec), which are video packet compression methods based on the MPEG- Can be converted into one. The codec converter 130-3 may convert the compression method of the voice packet into at least one of MPEG-2 and AC3 (Audio Codec 3), which is a compression method of a voice packet based on the MPEG-2 TS.

In the case where video and audio packets based on the first network 200 and the second network 300 are different from each other, the codec converter 130-3 includes a second network 300 for retransmitting video and audio packet compression schemes ) Based video and audio packet compression scheme.

If the video and audio packets based on the first network 200 and the second network 300 have the same compression scheme, the codec converter 130-3 may not convert the video and audio packet compression scheme.

The codec converter 130-3 can output the MPEG-2 TS-based video and audio packets to the MPEG-2 TS remultiplexer 130-4.

The MPEG-2 TS demultiplexer 130-4 can multiplex the video and audio packets based on the MPEG-2 TS and the PSIP table into MPEG-2 TS packets. For example, the MPEG-2 TS remultiplexer 130-4 can generate an MPEG-2 TS packet by multiplexing video and audio packets based on the MPEG-2 TS and a PSIP table. The MPEG-2 TS packet may be a packet conforming to the standard of the International Organization for Standardization / International Electrotechnical Commission (ISO / IEC) 13818-1 (MPEG-2 System).

The MPEG-2 TS demultiplexer 130-4 can output the MPEG-2 TS packet to the transmitter 150. [

The transmitter 150 may convert (and / or modulate) an MPEG-2 TS packet into a digital broadcast signal and an IP packet based on the second network 300. For example, the digital broadcasting signal and the IP packet based on the second network 300 may be an MPEG-2 TS-based digital broadcasting signal and an IP packet. At this time, the digital broadcasting signal based on the MPEG-2 TS may be an RF signal based on the MPEG-2 TS, and the IP packet based on the MPEG-2 TS may be the MPEG-2 TS over IP packet for the IP based real time streaming.

Transmitter 150 may transmit broadcast data and broadcast program related information that has been converted (and / or modulated) an MPEG-2 TS packet through the second network. For example, the broadcast data may be at least one of a digital network signal based on a second network, that is, an MPEG-2 TS, and an IP packet.

The transmitter 150 includes a modulator 150-1 and an IP output interface 150-3.

The modulator 150-1 modulates the MPEG-2 TS packets converted and multiplexed from the MPEG-2 TS remultiplexer 130-4 into a digital broadcast signal based on the second network 300, Based digital broadcasting signal to the second network 300. [

For example, the modulator 150-1 modulates an MPEG-2 TS packet into a digital broadcast signal based on an MPEG-2 TS-based RF signal transmission scheme, and transmits the MPEG-2 TS packet to a MPEG- can do.

In another example, the modulator 150-1 modulates an MPEG-2 TS packet into a domestic cable broadcasting signal based on a QAM (Quadrature Amplitude Modulation) modulation method in the case of a domestic cable broadcasting system, and modulates the frequency of the domestic cable broadcasting system As shown in FIG.

The IP output interface 150-3 can convert an MPEG-2 TS packet into an IP packet based on the second network 300. [

The IP output interface 150-3 can transmit the IP packet and the broadcast program related information based on the converted second network 300 to the second network 300. [ For example, the IP output interface 150-3 may transmit the broadcast program related information to the SI system of the digital broadcast head end through the second network 300. [

The IP output interface 150-3 can convert the MPEG-2 TS packet into an IP packet based on the MPEG-2 TS by including it in the payload of the IP packet and transmit it. In addition, the IP packet based on MPEG-2 TS may be TS over IP data.

FIG. 4 is a flowchart illustrating an example of an operation of extracting video and audio packets of the ATSC 3.0 A / V demultiplexer shown in FIG.

Referring to FIG. 4, the ATSC 3.0 A / V demultiplexer 130-1 may receive an LLS packet (S410). At this time, the LLS packet can be defined as ATPC port number as 4937, and the destination address is 224.0.23.60 in the ATSC 3.0 specification.

The ATSC 3.0 A / V demultiplexer 130-1 analyzes the SLT included in the LLS packet (S420), and confirms the ATSC 3.0 based transmission protocol based on the SLT analysis (S430).

When the protocol is ROUTE, the ATSC 3.0 A / V demultiplexer 130-1 receives and analyzes the SLS packet and generates a User Service Bundle Description (USBD), a Service-based Transport Session Instance (S-TSID) ) And MPD (Media Processing Descriptor), and receive and analyze USBD, S-TSID, and MPD (S440).

The ATSC 3.0 A / V demultiplexer 130-1 can extract the video and audio packets included in the IP packet based on the analysis of the USBD, the S-TSID, and the MPD (S450).

When the protocol is not ROUTE, for example, when the protocol is MMT, the ATSC 3.0 A / V demultiplexer 130-1 receives and analyzes the SLS packet and transmits the USBD and MP Table (MMT Package Table) And receive and analyze USBD and MP Table (S460).

The ATSC 3.0 A / V demultiplexer 130-1 may extract the video and voice packets included in the IP packet based on the analysis of the USBD and the MP table (S470).

FIG. 5 is a flowchart for explaining an example of the operation of generating the PSIP table of the ATSC 3.0 signaling analysis and converter 130-2 shown in FIG.

Referring to FIG. 5, the ATSC 3.0 signaling analysis and converter 130-2 may receive an LLS packet (S505).

The ATSC 3.0 signaling analysis and conversion unit 130-2 confirms the SLT (S510), and provides the virtual channel information in the PSIP using the service ID, majorChannel No., minorChannel No., and Service Name value included in the SLT (VCT) (step S515).

The ATSC 3.0 signaling analysis and converter 130-2 may identify the RRT (S520) and generate a RRT (Region Rating Table) table providing the region and the viewing rating information in the PSIP (S525).

The ATSC 3.0 signaling analysis and converter 130-2 checks the System Time (S530), converts the time value obtained from the System Time into GPS time, and generates a STT (System Time Table) table providing time information in the PSIP (S535).

After generating the PSIP table including the VCT, the RRT, and the STT, the ATSC 3.0 signaling analysis and conversion unit 130-2 may generate a MGT (Master Guide Table) that provides information such as the table identification values of the PSIP (S540).

The ATSC 3.0 signaling analysis and conversion unit 130-2 stores the PSIP table (S545) and outputs the PSIP table at the designated time intervals (S550).

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the apparatus and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA) , A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing unit may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

The software may include a computer program, code, instructions, or a combination of one or more of the foregoing, and may be configured to configure the processing device to operate as desired or to process it collectively or collectively Device can be commanded. The software and / or data may be in the form of any type of machine, component, physical device, virtual equipment, computer storage media, or device , Or may be permanently or temporarily embodied in a transmitted signal wave. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (20)

A receiver for selectively receiving at least one of an ATSC (Advanced Television System Committee) 3.0 based digital broadcasting signal and an IP (Internet Protocol) packet input through a first network;
(Moving Picture Experts Group-2 Transport Stream) packet by converting an audio / video (A / V) packet and signaling information so as to be received in a second network based on an output signal of the receiver, A controller for extracting and providing broadcast program related information so that a SI (System Information) system of a digital broadcast head end can generate an SI table related to a broadcast program converted into an MPEG-2 TS; And
A transmitter for transmitting broadcast data obtained by converting the MPEG-2 TS packet and the broadcast program related information through a second network,
.
The method according to claim 1,
The ATSC 3.0 based digital broadcast signal is the ATSC 3.0 based RF signal,
Wherein the broadcasting data is at least one of the second network-based digital broadcasting signal modulating the MPEG-2 TS packet, and the second network-based IP packet converting the MPEG-2 TS packet.
3. The method of claim 2,
The receiver includes:
An IP input interface for receiving the IP packet based on the ATSC 3.0; And
A demodulator for demodulating the RF signal based on the ATSC 3.0 and extracting the IP packet based on the ATSC 3.0;
.
The method of claim 3,
The controller comprising:
An ATSC 3.0 A / V demultiplexer for extracting video and voice packets by analyzing the IP packet based on the ATSC 3.0;
The signaling information based on the ATSC 3.0 is analyzed, a Program and System Information Protocol (PSIP) table based on the MPEG-2 TS is generated from the signaling information based on the ATSC 3.0, and a signaling Analysis and converter;
A codec converter for converting the compression method of the video and audio packets into the compression method of the video and audio packets based on the MPEG-2 TS; And
2 TS TS demultiplexer for converting and multiplexing the MPEG-2 TS-based video and audio packets and the MPEF-2 TS-based PSIP table into the MPEG-2 TS packets,
.
5. The method of claim 4,
The transmitter includes:
A modulator for converting the MPEG-2 TS packet into an RF signal based on the MPEG-2 TS; And
An IP output interface for converting and transmitting the MPEG-2 TS packet into the IP packet based on the MPEG-2 TS, and transmitting the broadcast program related information to the SI system
.
5. The method of claim 4,
The ATSC 3.0 A / V demultiplexer includes:
And analyzing the LLS (Low Level Signaling), SLT (Service List Table) and SLS (Service Level Signaling) from the ATSC 3.0 based IP packet to extract the video and voice packets.
The method according to claim 6,
The ATSC 3.0 A / V demultiplexer includes:
When the video and audio packets are transmitted in the ROUTE scheme, the video and audio packets are extracted by analyzing a User Service Bundle Description (USBD), a Service-based Transport Session Instance Description (S-TSID) and a Media Processing Descriptor (MPD) and,
Extracting the video and audio packets by analyzing the USBD and MP Table (MMT Package Table) when the video and audio packets are transmitted in the MMTP (MPEG Media Transport Protocol)
Wherein the ATSC 3.0-based IP packet includes the USBD, the S-TSID, the MPD, and the MP table.
The method according to claim 6,
The SLT includes a service identification (ID), a service name, a protocol type, a PLP (Product Liability Prevention) number, an IP address, a port number, a major channel number, a minor channel number, Short Service Name
.
5. The method of claim 4,
The PSIP table includes:
(MGT), a virtual channel table (VCT), a rating region table (RRT), a system time table (STT), an event information table (EIT)
.
5. The method of claim 4,
Wherein the cortex converter comprises:
(MPEG-2), Advanced Video Coding (AVC) and High Efficiency Video Codec (HEVC), which are compression methods of video packets based on the MPEG-2 TS,
And converting the compression method of the voice packet into at least one of MPEG-2 and AC3 (Audio Codec 3) which is a compression method of a voice packet based on the MPEG-2 TS.
Selectively receiving at least one of an ATSC (Advanced Television System Committee) 3.0 based digital broadcasting signal and an IP (Internet Protocol) packet input through a first network;
(Audio / Video) packet and signaling information so as to be receivable in the second network based on the at least one, generating an MPEG-2 Moving Picture Experts Group-2 Transport Stream (TS) packet, Extracting and providing broadcast program related information so that a system information (SI) system of a head end can generate an SI table related to a broadcast program converted into an MPEG-2 TS; And
Transmitting the broadcast data obtained by converting the MPEG-2 TS packet and the broadcast program related information through a second network
/ RTI >
12. The method of claim 11,
The ATSC 3.0 based digital broadcast signal is the ATSC 3.0 based RF signal,
Wherein the broadcasting data is at least one of the second network-based digital broadcasting signal modulating the MPEG-2 TS packet, and the second network-based IP packet converting the MPEG-2 TS packet.
13. The method of claim 12,
Wherein the receiving comprises:
Receiving the IP packet based on the ATSC 3.0; And
Demodulating the RF signal based on the ATSC 3.0, and extracting the IP packet based on the ATSC 3.0
/ RTI >
14. The method of claim 13,
Wherein the generating comprises:
Extracting video and voice packets by analyzing the IP packet based on the ATSC 3.0;
Analyzing the ATSC 3.0 based signaling information, generating a Program and System Information Protocol (PSIP) table based on the MPEG-2 TS from the ATSC 3.0 based signaling information, extracting and providing the broadcast program related information ;
Converting the compression method of the video and audio packets into a compression method of video and audio packets based on the MPEG-2 TS; And
Converting and converting the MPEG-2 TS-based video and audio packets and the MPEF-2 TS-based PSIP table into the MPEG-2 TS packets
/ RTI >
15. The method of claim 14,
Wherein the transmitting comprises:
Converting the MPEG-2 TS packet into an RF signal based on the MPEG-2 TS; And
Converting and transmitting the MPEG-2 TS packet into an IP packet based on the MPEG-2 TS, and transmitting the broadcast program related information to the SI system
/ RTI >
15. The method of claim 14,
Wherein the extracting of the video and audio packets comprises:
Extracting the video and voice packets by analyzing LLS (Low Level Signaling), SLT (Service List Table) and SLS (Service Level Signaling) from the ATSC 3.0 based IP packet
/ RTI >
17. The method of claim 16,
Wherein the extracting comprises:
When the video and audio packets are transmitted in the ROUTE scheme, the video and audio packets are extracted by analyzing a User Service Bundle Description (S-TSD), a Service-based Transport Session Instance Description (S-TSID) and a Media Processing Descriptor (MPD) ; And
Extracting the video and audio packets by analyzing the USBD and MP Table (MMT Package Table) when the video and audio packets are transmitted in the MMTP (MPEG Media Transport Protocol)
Lt; / RTI >
Wherein the ATSC 3.0-based IP packet includes the USBD, the S-TSID, the MPD, and the MP table.
17. The method of claim 16,
The SLT includes a service identification (ID), a service name, a protocol type, a PLP (Product Liability Prevention) number, an IP address, a port number, a major channel number, a minor channel number, Short Service Name
/ RTI >
15. The method of claim 14,
The PSIP table includes:
(MGT), a virtual channel table (VCT), a rating region table (RRT), a system time table (STT), an event information table (EIT)
/ RTI >
15. The method of claim 14,
Wherein the converting comprises:
Converting the compression method of the video packet into at least one of MPEG-2, AVC and HEVC, which is a compression method of the MPEG-2 TS-based video packet; And
Converting the compression method of the voice packet into at least one of MPEG-2 and AC3 which is a compression method of a voice packet based on the MPEG-2 TS;
/ RTI >

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