KR20180058211A - Method and apparatus for broadcasting retransmission - Google Patents

Abstract

A broadcast retransmission method and an apparatus thereof are provided. The method is a method for retransmitting the broadcast of a second broadcasting station which is connected to a first broadcasting station through a distribution network and is connected to a broadcast receiving apparatus through a broadcasting network. The method includes a step of extracting an audio/video (AV) signal, a signaling signal and an electronic service guide (ESG) signal from a first broadcast signal received through the distribution network, a step of converting the signaling signal and the ESG signal according to pre-set or local broadcasting information inputted by an operator, a step of generating a second broadcast signal by multiplexing the converted signaling and ESG signals and the AV signal, and a step of transmitting the second broadcast signal through the broadcasting network.

Description

[0001] METHOD AND APPARATUS FOR BROADCASTING RETRANSMISSION [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast retransmission method and apparatus, and more particularly, to a technique for retransmitting a broadcast signal received from a head office broadcast station in a coverage area of a local broadcast station.

Typically, the broadcast system includes a head office broadcast station and a local station broadcast station. Our head office broadcasts programs, produces them, and sends them to the cover area of the head office broadcasting station. Regional broadcasting stations also organize and produce broadcasting programs and transmit them to the coverage areas of the broadcasting stations of the regional broadcasting stations. However, since there are many cases where the content production resources are insufficient, a part or a substantial part of the broadcasting programs are transmitted from the broadcasting stations of the broadcasting stations of the regional broadcasting stations.

However, it is unreasonable for the head office broadcasting station to manage all the broadcasting information of the broadcasting stations of the regional broadcasting stations. It is desirable that the broadcasting station of the regional station manages its own programming information. At this time, it is difficult to automatically reflect the programming information of the broadcasting station of the head office in the regional broadcasting program information.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for converting a broadcasting signal transmitted from a main broadcasting station to a local broadcasting and retransmitting the broadcasting signal according to local broadcasting.

According to one aspect of the present invention, a broadcast retransmission method is a broadcast retransmission method of a second broadcast station connected to a first broadcast station through a distribution network and connected to a broadcast receiving apparatus through a broadcast network, 1) extracting an AV (Audio, Video) signal, a signaling signal and an ESG (Electronic Service Guide) signal from a broadcasting signal, and converting the signaling signal and the ESG signal according to local broadcasting information pre- Generating a second broadcast signal by multiplexing the signal, the converted signaling signal and the ESG signal, and the AV signal, and transmitting the second broadcast signal through the broadcast network.

The method of claim 1, wherein the converting comprises: decoding the signaling signal to extract signaling data; and receiving low level signaling (LLS) and service layer signaling (SLS) data from the signaling data. And converting the partial data, wherein the second broadcasting signal is generated by multiplexing the signaling data including the converted partial data.

The step of converting the partial data may further comprise the step of converting an identifier of an entire broadcast stream, an ESG, or a base URL for obtaining a service layer signaling file among service list table (SLT) data of the low level signaling (LLS) Resource Locator), a service identifier identifying the service in the broadcast area, a service name, and a URL for accessing internet signaling for the service, to a value entered or set by the operator.

The step of converting the partial data may further comprise the steps of: translating the Service Layer Signaling (SLS) data of the Real Time Object Delivery over Unidirectional Transport (ROUTE) protocol into User Service Bundle Description (USBD) and Service-based Transport Session Instance Description (S-TSID) At least one, and the USBD of the MMT (MPEG Media Transport) protocol, can be converted into values entered or set by the operator.

Converting the partial data comprises: an Internet identifier identifying a T-UHD (Ultra High Definition) service; a reference identifier for a matching service entry in a low level signaling (LLS); a T-UHD service name; and a USD Or a reference identifier for the corresponding service element in the service description.

The method of claim 1, wherein transforming the partial data comprises: identifying an Internet identifier identifying a T-UHD (Ultra High Definition) service; a reference identifier for matching service entries in a low level signaling (LLS); Attribute of the object.

The converting step includes decoding the ESG signal to extract service data, schedule data, and content data, and changing the schedule data and the content data into schedule data and content data of a local broadcast input by an operator The ESG data including the converted schedule data and the content data may be generated by multiplexing the second broadcast signal.

According to another aspect of the present invention, a broadcast retransmission apparatus is a broadcast retransmission apparatus of a second broadcast station connected to a first broadcast station through a distribution network and connected to a broadcast receiving apparatus through a broadcast network, A demultiplexer for demultiplexing the first broadcast signal into a first AV (Audio, Video) signal, a first signaling signal, and a first ESG (Electronic Service Guide) signal; And a second ESG signal, the second ESG signal, and the first ESG signal, and a second ESG signal generating unit for receiving the second AV signal of the second broadcasting station, An AV switch for selectively outputting the first AV signal or the second AV signal, and an AV switch for selectively outputting the first AV signal or the second AV signal, the second signaling signal, and the second ESG signal output from the AV switch It hwahan claim and comprising a multiplexer for transmitting the second broadcast signal to the broadcasting network.

Wherein the broadcast conversion unit includes a service list table (SLT) data of low level signaling (LLS) data extracted from the first signaling signal, a service of a real time object delivery over unidirectional transport (ROUTE) (SLS) data of service layer signaling (SLS) data of an MMT (MPEG Media Transport) protocol according to the local broadcasting information, A signaling conversion unit for generating the second signaling signal including table SLT data and service layer signaling (SLS) data, and converting service data, schedule data and content data of the first ESG signal according to the local broadcast information And includes the converted service data, schedule data, and content data And an ESG converting unit for generating the second ESG signal.

The signaling conversion unit may include a decoder for decoding the first signaling signal and extracting the low level signaling (LLS) data, the service layer signaling (SLS) data of the ROUTE protocol, and the SLS data of the MMT protocol, Some items in the service list table (SLT) data of the decoded low level signaling (LLS) data, some items of USBD (User Service Bundle Description) among the service layer signaling (SLS) data of the ROUTE protocol, S A signaling integration module for converting at least one item of the Service-based Transport Session Instance Description (TSID) and a part of USBD among service layer signaling (SLS) data of the MMT protocol; Service list table (SLT) data of low level signaling (LLS) data, And encoders for signaling data including service layer signaling (SLS) data of the ROUTE protocol and service layer signaling (SLS) data of the MMT protocol to generate the second signaling signal.

The signaling integration module includes a basic URL (Uniform Resource Locator) for acquiring an identifier of an entire broadcast stream, an ESG or a service layer signaling file among service list table (SLT) data of the low level signaling (LLS) data, (T-UHD) service among the service layer signaling (SLS) data of the ROUTE protocol, at least one of a service identifier for identifying a service, a service name, and a URL for accessing internet signaling for a service At least one of a reference identifier for a corresponding service entry in a low level signaling (LLS), a reference identifier for a corresponding service element in a T-UHD service name and a USD (User Service Description) Identifying the T-UHD service among the service layer signaling (SLS) data Internet identifier, it is possible to convert at least one of a reference identifier, T-UHD properties that describe the service name and the service on the service entry to meet the low-level signaling (LLS).

The ESG conversion unit may include a decoder for decoding the first ESG signal to extract service data, schedule data, and content data, an integrated DB for storing service data, schedule data, and content data extracted by the decoder, data stored in the integrated DB An operator interface unit for providing an inquiry screen including the service data, the schedule data and the content data reflecting the information inputted by the operator, And encoders the data to generate the second ESG signal.

According to another aspect of the present invention, there is provided a broadcast retransmission apparatus including: a communication device connected to a first broadcasting station through a distribution network, connected to a broadcasting reception device through a broadcasting network, for transmitting / receiving a broadcasting signal, 1 program for converting a first broadcast signal into a second broadcast signal and transmitting the second broadcast signal to the broadcast network, and at least one processor for executing the program, (Video) signal, a signaling signal, and an ESG (Electronic Service Guide) signal, converts the signaling signal and the ESG signal according to pre-set or local broadcasting information input by an operator, converts the converted signaling signal and the ESG signal And instructions for multiplexing the AV signal to generate a second broadcast signal.

Wherein the program further comprises a service list table (SLT) data of low level signaling (LLS) data extracted from the signaling signal, a ROUTE (SLS) data of the Real Time Object Delivery over Unidirectional Transport (SLS) protocol and Service Layer Signaling (SLS) data of the MMT (MMT) protocol according to the local broadcast information And converting the service data, the schedule data and the content data of the ESG signal according to the local broadcasting information.

According to the embodiment of the present invention, the local broadcasting operator can change the ESG (Electronic Service Guide) data, which is the signaling data of the broadcast signal transmitted from the head office broadcasting station and the broadcasting program information, It can be converted and re-transmitted.

1 is a block diagram illustrating a broadcasting system according to an embodiment of the present invention.
2 is a diagram illustrating a broadcast protocol stack according to an embodiment of the present invention.
3 is a block diagram illustrating a broadcast retransmission apparatus according to an embodiment of the present invention.
4 is a block diagram illustrating a detailed configuration of the broadcast conversion unit of FIG. 3 according to an embodiment of the present invention.
FIG. 5 is a block diagram illustrating a detailed configuration of the broadcast conversion unit of FIG. 3 according to another embodiment of the present invention.
6 is a flowchart illustrating a broadcast retransmission method according to an embodiment of the present invention.
7 is a flowchart illustrating a signaling signal conversion process according to an embodiment of the present invention.
8 is a flowchart illustrating an ESG signal conversion process according to an embodiment of the present invention.
9 is a hardware block diagram of a broadcast retransmission apparatus to which an embodiment of the present invention can be applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

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 the like described in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software .

Hereinafter, embodiments of the present invention are described according to the ATSC standard (Advanced Television System Committee Standard), but the present invention is not limited to the ATSC standard.

In this specification, 'signaling' refers to transmission / reception of service information (SI) provided in a broadcasting system, an Internet broadcasting system, and / or a broadcasting / Internet convergence system.

Herein, the term 'broadcast signal' refers to a broadcast signal such as an internet broadcast, a broadband broadcast, a communication broadcast, a data broadcast and / or a video on demand (VOD) in addition to a terrestrial broadcast, a cable broadcast, a satellite broadcast, And is defined as a concept including signals and / or data provided in broadcasting.

Now, a broadcast retransmission method and apparatus according to an embodiment of the present invention will be described with reference to the drawings.

1 is a block diagram illustrating a broadcasting system according to an embodiment of the present invention, which may be an ATSC 3.0-based terrestrial UHD (Ultra-HD) broadcasting system.

Referring to FIG. 1, a broadcasting system according to an embodiment of the present invention includes a main broadcasting station 10, a distribution network 20, a local broadcasting station 30, a broadcasting network 40, and a broadcast receiving apparatus 50.

The head office broadcasting station 10 organizes and produces a head office broadcasting program and transmits a broadcasting program to a cover area of the head office broadcasting station 10. The head office broadcasting station 10 also broadcasts the head office broadcasting program to the local broadcasting station 30.

The distribution network 20 is a network used by the head office broadcasting station 10 to transmit the main broadcasting program to each local broadcasting station 30. [ The distribution network 20 may be implemented in a wired or wireless manner.

The local broadcasting station 30 organizes and produces local broadcasting programs, and broadcasts the programs to the coverage areas of the local broadcasting stations 30. Also, the local broadcasting station 30 may receive the main broadcasting program from the main broadcasting station 10 and utilize it as a broadcasting program of the local broadcasting station.

The broadcasting network 40 is a route for the local broadcasting station 30 to transmit the local broadcasting program to the broadcasting receiving device 50. The broadcasting network 40 includes a terrestrial broadcasting network, a satellite broadcasting network, and a cable broadcasting network.

The broadcast receiving apparatus 50 realizes digital broadcasting by separating the received broadcast program into a video stream, an audio stream, a data stream, and broadcast programming information. The broadcast receiving apparatus 50 is also called a set-top box among those skilled in the art.

An example of a broadcasting protocol used in such a broadcasting system is shown in Fig.

FIG. 2 is a diagram illustrating a broadcast protocol stack according to an embodiment of the present invention. FIG. 2 illustrates a broadcast protocol stack according to a terrestrial UHD (Ultra High Definition TeleVision) TV broadcast transmission / reception matching standard.

The broadcast protocol stack is composed of a plurality of layers. The lowest layer is the physical layer 11. The physical layer 11 includes a broadcast and a broadband. The upper layer adjacent to the physical layer 11 is the IP layer 13. The upper layer adjacent to the IP layer 13 is the transport layer 15. The transport layer 15 includes UDP (User Datagram Protocol) and TCP (Transmission Control Protocol). When the broadcast is used in the physical layer 11, the transport layer 15 uses UDP. When broadband is used in the physical layer 11, the transport layer 15 uses TCP.

The application layer 17 includes a service delivery layer. Processing for transmission to the service data is performed in the service delivery layer. The service data is encoded into a broadcast signal and transmitted through the broadcast or broadband of the physical layer 11.

The service data includes video and audio data, signaling data, and a non-real time file (hereinafter, referred to as an 'NRT' file).

The broadcast transmission method uses two transmission protocols and the broadband transmission method uses one transmission protocol.

First, there are two methods for service delivery through broadcasting.

The first method is to process service data in MPU (Media Processing Units) based on MMT (MPEG Media Transport) and transmit it using MMTP (MMT protocol). In this case, the service data transmitted through the MMTP includes the MPU encapsulated in the form of an ISO Base Media File (hereinafter, referred to as 'ISO BMFF') and MMT specific signaling data. Encrypted Media Extension (EME) is used to provide MPU Player / Decoders capable of playing MMTP media in HTML (HyperText Markup Language) 5 / JS (JavaScript), and Common Encryption (CENC ) Is used.

The second method is to process service data into DASH segments based on MPEG (Moving Picture Expert Group) dynamic adaptive streaming over HTTP (DASH) and transmit it using ROUTE (Real Time Object Delivery over Unidirectional Transport) Method. In this case, the service data delivered via the ROUTE protocol includes a DASH segment encapsulated in ISO BMFF format, ROUTE specific signaling data, and an NRT file. That is, non timed data such as an NRT file can be transmitted through the ROUTE protocol. In HTML5 / JS, EME is used to provide DASH Player / Decoders that can play DASH protocol media, and common encryption (CENC) for ISO-BMFF is used. The ROUTE protocol provides HyperText Transfer Protocol (HTTP) Proxy functionality.

Next, service delivery through broadband handles service data into DASH segments and transmits them over HTTP. In this case, the service data transmitted via HTTP includes a DASH segment encapsulated in ISO BMFF format, an NRT file, and all signaling objects (All Signaling Objects).

As described above, the service data is all the data related to the service, including the service components that make up the service, signaling information on the service, NRT data, other files, and the like.

Also, the signaling data may be communicated via MMTP and / or ROUTE, while the bootstrap signaling information is provided by a service list table (SLT).

As described above, the terrestrial UHD broadcasting signal is composed of an NRT file including signaling information, audio and / or video data, and ESG (Electronic Service Guide) information.

At this time, in the embodiment of the present invention, the signaling information and the ESG information transmitted from the head office broadcasting station 10 are converted to local broadcasting in the local broadcasting station 30, and the broadcasting is resent.

FIG. 3 is a block diagram illustrating a broadcast retransmission apparatus according to an embodiment of the present invention. The broadcast retransmission apparatus 100 is included in a local broadcast station 30.

3, the broadcast retransmission apparatus 100 includes a receiving unit 101, a demultiplexing unit 103, an audio / video (AV) switch 105, a broadcast converting unit 107, a multiplexing unit 109 A transmitting unit 111, a local station AV transmitting unit 113, and an operator interface unit 115.

The receiving unit 101 receives the main broadcasting signal from the main broadcasting station 10 through the distribution network 20. [ The receiving unit 101 receives the main broadcasting signal in the form of packets to be streamed in real time.

The demultiplexing unit 103 extracts an audio and / or video (hereinafter referred to as AV) signal (main office), a signaling signal (main office) and an ESG signal (main office) from the main broadcasting signal received by the receiving unit 101 .

The AV switch 105 selectively outputs the AV signal (main office) from the demultiplexing unit 103 and the local station AV signal from the local station AV sending unit 113 to the multiplexing unit 109. The AV switch 105 may not output the AV signal in accordance with the regional station arrangement information.

The broadcasting conversion unit 107 multiplexes the signaling signal (area) and the ESG signal (area) obtained by converting the signaling signal (head office) and the ESG signal (head office) from the demultiplexing unit 103 in accordance with the local broadcasting, .

The multiplexing unit 109 multiplexes the AV signal from the AV switch 105, the signaling signal (area) from the broadcast conversion unit 107, and the ESG signal (area). The multiplexing unit 109 can use the IP MUX to multiplex it with the IP signal.

The transmitter 111 outputs the multiplexed broadcast signal output from the multiplexer 109 to the broadcast network 40.

The local station AV transmitting unit 113 outputs the local station AV signal. The local station AV transmitting unit 113 may store the local station AV signal itself or may be obtained from the database.

The operator interface unit 115 includes input means for receiving the local station signaling information and the local station ESG information.

FIG. 4 is a block diagram illustrating a detailed configuration of the broadcast conversion unit of FIG. 3 according to an exemplary embodiment of the present invention. In particular, FIG. 4 illustrates a configuration for converting a signaling signal.

Referring to FIG. 4, the broadcast conversion unit 107 includes a signaling decoder 117, a signaling integration module 119, and a signaling encoder 121.

The signaling decoder 117 decodes the signaling signal (main office) output from the demultiplexing unit 103 in real time, and extracts the signaling data.

The signaling integration module 119 integrates the signaling data output from the signaling decoder 117 and the signaling data input through the operator interface unit 115 or previously input and stored for reception, and generates signaling data according to the local broadcasting .

According to the ATSC 3.0 standard, the signaling data consists of Low Level Signaling (LLS) data and Service Layer Signaling (SLS) data. Here, the service layer signaling (SLS) data supports two types of signaling according to the transmission protocol, ROUTE protocol and MMT protocol.

The signaling integration module 119 converts the SLT data of the low level signaling (LLS) data among the signaling data output from the signaling decoder 117 into a value input from the operator interface unit 115. That is, among the SLT data of low-level signaling (LLS) information, conversion is performed on data to be corrected according to local broadcasting.

Among the SLT data of the low level signaling (LLS) data, the data that can be changed in the local broadcasting station 30 is as follows.

bsid Identifier of the entire Broadcast Stream. sltInetUrl Base URL to acquire ESG or service level signing files available via broadband for services in this SLT. serviceId Integer number that identifies this service within the scope of this Broadcast area. shortServiceName Short name of the Service svcInetUrl URL to access Internet signing for this service

The signaling integration module 119 includes an identifier (bsid) of the entire broadcast stream in Table 1, sltInetUrl, which is a base URL (Uniform Resource Locator) for obtaining an ESG or a service layer signaling file, a service identifier (svcInetUrl) for accessing the Internet signaling for the service to the value input from the operator interface unit 115. In this case,

Service layer signaling (SLS) data according to the ROUTE protocol is composed of User Service Bundle Description (USBD), Service-based Transport Session Instance Description (S-TSID) and Media Presentation Description (MPD).

The signaling integration module 119 converts the service layer signaling (SLS) data according to the ROUTE protocol among the signaling data output from the signaling decoder 117 into a value received from the operator interface unit 115. That is, the service layer signaling (SLS) data according to the ROUTE protocol performs conversion on data to be modified according to local broadcasting.

Herein, data that can be changed in the local broadcasting station 30 among the SLS data of the service layer signaling according to the ROUTE protocol are shown in the following Tables 2 and 3.

USBD globalServiceId A globally unique URI that identifies the T-UHDTV service. This parameter is used to link ESG data (Service @ globalServiceID). serviceId Reference to corresponding service entry in LLS (SLT). The value of this attribute is the same value of serviceId assigned to the entry. name Name of the T-UHDTV service as given by the lang attribute

S-TSID serviceId Reference to corresponding service element in the USD. The value of this attribute shall be a reference to a service with a corresponding value of service_id.

The signaling integration module 119 includes an Internet identifier (globalServiceId) identifying the T-UHD (Ultra High Definition) service in Table 2, a reference identifier (serviceId) for matching service entries in the low level signaling (LLS) And changes at least one of the service names to values received from the operator interface unit 115.

In addition, the signaling integration module 119 changes some items in the USD (User Service Description) of the S-TSID in Table 3. That is, USD, which is one of the SLS fragments, changes the reference identifier (serviceId) for the corresponding service element to the value input from the operator interface unit 115.

Also, the service layer signaling (SLS) data of the MMT scheme is composed of MMT Package Table and USBD.

The signaling integration module 119 converts the service layer signaling (SLS) data according to the MMT protocol from the signaling data output from the signaling decoder 117 into a value received from the operator interface unit 115. That is, the service layer signaling (SLS) data according to the MMT protocol performs conversion on data to be modified according to local broadcasting.

Table 4 shows the data that can be changed in the local broadcasting station 30 among the SLS data of the service layer according to the MMT protocol.

USBD globalServiceId A globally unique URI that identifies the T-UHDTV service. This parameter is used to link ESG data (Service @ globalServiceID). serviceId Reference to corresponding service entry in LLS (SLT). The value of this attribute is the same value of serviceId assigned to the entry. name Name of the T-UHDTV service as given by the lang attribute serviceDescrText Attribute indicates description of the service.

The signaling integration module 119 includes an Internet identifier (globalServiceId) identifying the T-UHD service in Table 4, a reference identifier (serviceId) for matching service entries in low level signaling (LLS), a T- (ServiceDescrText) to the value received from the operator interface unit 115.

As described above, the signaling integration module 119 receives SLT data of low level signaling (LLS), SLS data of the ROUTE protocol, and SLS data of the MMT protocol from the decoded signaling data as a value received from the operator interface unit 115 Conversion. And generates local broadcast signaling data by summing the converted SLT data and untransformed data from the decoded signaling data, and outputs the generated signal to the signaling encoder 121. [

The signaling encoder 121 encodes the local broadcasting signaling data input from the signaling integration module 119 to generate a signaling signal (region), and outputs the signaling signal (region) to the multiplexing unit 109.

FIG. 5 is a block diagram illustrating a detailed configuration of the broadcast conversion unit of FIG. 3 according to another embodiment of the present invention. In particular, FIG. 5 illustrates a configuration for converting an ESG signal.

Referring to FIG. 5, the broadcast conversion unit 107 includes an ESG decoder 123, an ESG integrated DB 125, and an ESG encoder 127.

The ESG decoder 123 decodes the ESG signal (main office) in real time, extracts the ESG data, and stores the extracted ESG data in the ESG integrated DB 125. According to the ATSC 3.0 standard, the ESG data includes service data, schedule data, and content fragment data.

The operator interface unit 115 provides an inquiry screen for inquiring ESG data stored in the ESG unified DB 125, that is, service data, schedule data, and content data. After inquiring ESG data stored in the ESG integrated DB 125, the operator inputs the local broadcasting contents at a time when the local broadcasting should be transmitted, and inputs the local broadcasting schedule data after deleting the head office schedule data.

The ESG encoder 127 encodes the ESG data including the ESG data changed by the operator interface unit 115 and the ESG data not changed from the ESG data stored in the ESG unified DB 125 into an ESG signal And outputs it to the multiplexing unit 109. [

As described above, the ESG integrated DB 125 stores service data (main office), schedule data (main office), and content data (main office). The local content is stored in the ESG integrated DB 125 via the operator interface unit 115 and the schedule data (head office) stored in the ESG integrated DB 125 is deleted and then changed to schedule data (area). Then, service data (region), schedule data (main office + area), and content data (main office + area) are encoded and output. Here, the service data (main office) is changed to the service data (area), the main schedule data and the regional schedule data are added to the schedule data, and the main office content data and the regional content data are added together.

A broadcast retransmission method according to an embodiment of the present invention will now be described with reference to the configuration described above.

6 is a flowchart illustrating a broadcast retransmission method according to an embodiment of the present invention.

Referring to FIG. 6, a receiving unit 101 of a broadcast retransmission apparatus 100 receives a broadcast signal (headquarters) through a distribution network 20 (S101).

The demultiplexing unit 103 of the broadcast retransmission apparatus 100 extracts an AV signal (main office), a signaling signal (main office) and an ESG signal (main office) from the broadcast signal (main office) received (S101) (S103).

The broadcast conversion unit 107 of the broadcast retransmission apparatus 100 converts the signaling signal (head office) extracted (S103) to conform to the local broadcast and converts the ESG signal (head office) to conform to the local broadcast (S105, S107 ).

The AV switch 105 selects whether to broadcast the AV signal (main office) extracted (S103) or the AV signal (area) input S109 according to the converted ESG (S107) (S111).

The multiplexing unit 109 multiplexes the broadcast signal (area) generated by multiplexing the selected AV signal (main office or area) S111, the converted signal S105 and the converted ESG signal to the broadcasting network 40 (S113).

FIG. 7 is a flowchart illustrating a signaling signal conversion process according to an embodiment of the present invention, and specifically illustrates step S105 of FIG.

7, the signaling decoder 117 of the broadcast conversion unit 107 decodes the signaling signal (main office) extracted by the demultiplexing unit 103 (S201) and extracts the signaling data (main office) (S203 ).

The signaling integration module 119 of the broadcast conversion unit 107 transmits SLT data of low level signaling (LLS) data, service layer signaling (SLS) data of ROUTE protocol, and service layer signaling (SLS) (115) to the data input by the local operator (S205). Specifically, the signaling integration module 119 of the broadcast conversion unit 107 receives at least one of bsid, sltInetUrl, serviceId, shortServiceName and svcInetUrl in Table 1, globalServiceId, serviceId, name in Table 2, and serviceId At least one of data, globalServiceId, serviceId, name, serviceDescrText in Table 4 is converted into data inputted or stored through the operator interface unit 115. [

The signaling integration module 119 of the broadcast conversion unit 107 includes the converted SLS data and the SLT data and adds the unconverted data among the signaling data decoded in step S203, The signaling data is encoded to generate a signaling signal (region) (S209).

FIG. 8 is a flowchart illustrating an ESG signal conversion process according to an embodiment of the present invention, and specifically illustrates step S107 of FIG.

8, the ESG decoder 123 of the broadcast conversion unit 107 decodes the ESG signal (head office) extracted by the demultiplexing unit 103 (S301) and extracts the ESG data (head office) (S303 ). The ESG data extracted (S303) is stored in the ESG integrated DB (125).

The operator interface unit 115 provides an ESG data inquiry screen stored in the ESG unified DB 125 at step S305 and stores the service data, schedule data and content data received from the operator at step S307 in the ESG unified DB 125 Register.

The ESG decoder 123 encodes the ESG data obtained by adding the ESG data changed by the operator interface unit 115 and the unmodified ESG data (S309) out of the ESG data stored in the ESG integrated DB 125, (S311).

FIG. 9 is a hardware block diagram of a broadcast retransmission apparatus to which an embodiment of the present invention can be applied, and shows a hardware configuration of the broadcast retransmission apparatus 100 described with reference to FIG. 1 to FIG.

9, a broadcast retransmission apparatus 200 includes a communication device 201, a memory device 203, a storage device 205, an input device 207, a display 209 and at least one processor 211 And stores a program that is executed in combination with hardware at a specified location.

The communication device 201 is connected to the processor 211 and transmits and / or receives a broadcasting signal through the distribution network 20 and / or the broadcasting network 40. [

The memory device 203 is coupled to the processor 211 and stores a program that includes instructions to cause the configuration and / or method according to the embodiments described in Figs. 1-8 to be executed. The program is implemented in conjunction with hardware such as memory device 203 and processor 211 to implement the present invention.

The storage device 205 stores information necessary for the operation of the broadcast retransmission device 200, the result of the operation of the broadcast retransmission device 200, and / or information input through the input device 207. The processor 211 executes the present invention in combination with hardware such as the memory device 203, the storage device 205, and the like.

The input device 207 is coupled to the processor 211 and is a means for user input operation according to the embodiments described in Figures 1-8.

The display 209 is connected to the processor 211 and outputs data according to the embodiments described in FIGS. 1 to 8 to the screen.

At this time, the input device 207 and the display 209 may be implemented as a single device.

The embodiments of the present invention described above are not implemented only by the apparatus and method, but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded.

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, It belongs to the scope of right.

Claims (14)

A broadcast re-transmission method of a second broadcast station connected to a first broadcast station through a distribution network and connected to a broadcast receiver through a broadcast network,
Extracting an AV (Audio, Video) signal, a signaling signal and an ESG (Electronic Service Guide) signal from a first broadcast signal received through the distribution network,
Converting the signaling signal and the ESG signal according to pre-set or local broadcasting information input by an operator,
Generating a second broadcast signal by multiplexing the converted signaling signal, the ESG signal, and the AV signal, and
Transmitting the second broadcast signal through the broadcasting network
And transmitting the broadcast data. The method of claim 1,
Wherein the converting comprises:
Decoding the signaling signal and extracting signaling data, and
Converting some data of low level signaling (LLS) data and service layer signaling (SLS) data among the signaling data,
Wherein the second broadcast signal comprises:
And the signaling data including the converted partial data is multiplexed and generated. 3. The method of claim 2,
Wherein the converting the partial data comprises:
A basic URL (Uniform Resource Locator) for obtaining an identifier of an entire broadcast stream, an ESG or a service layer signaling file from service list table (SLT) data of the low level signaling (LLS) data, Converting at least one of a service identifier identifying the service, a service name, and a URL for accessing internet signaling for the service into a value entered or set by the operator. 3. The method of claim 2,
Wherein the converting the partial data comprises:
At least one of USBD (User Service Bundle Description) and S-TSID (Service-based Transport Session Instance Description) among service layer signaling (SLS) data of ROUTE (Real Time Object Delivery over Unidirectional Transport) ) ≪ / RTI > protocol of the USBD to an input or set value by the operator. 5. The method of claim 4,
Wherein the converting the partial data comprises:
A reference identifier for a service entry that conforms to a low level signaling (LLS), a T-UHD service name, and a corresponding service element in the USD (User Service Description) And transforming at least one of the reference identifiers. 5. The method of claim 4,
Wherein the converting the partial data comprises:
An Internet identifier identifying a T-UHD (Ultra High Definition) service, a reference identifier for a matching service entry in a low level signaling (LLS), a T-UHD service name, and attributes describing the service Retransmission method. 3. The method of claim 2,
Wherein the converting comprises:
Decoding the ESG signal to extract service data, schedule data, and content data; and
Further comprising changing the schedule data and the content data into schedule data and content data of a local broadcast input by an operator,
Wherein the second broadcast signal comprises:
And the ESG data including the converted schedule data and the content data are multiplexed and generated. 1. A broadcast retransmission apparatus of a second broadcast station connected to a first broadcast station through a distribution network and connected to a broadcast receiving apparatus via a broadcast network,
A receiver for receiving a first broadcast signal from the first broadcast station through a distribution network,
A demultiplexer for dividing the first broadcast signal into a first AV (Audio, Video) signal, a first signaling signal, and a first ESG (Electronic Service Guide) signal,
A broadcast converter for converting the first signaling signal and the first ESG signal according to local broadcast information and outputting a second signaling signal and a second ESG signal,
An AV switch for receiving the second AV signal of the second broadcasting station and selectively outputting the first AV signal and the second AV signal,
A multiplexer for multiplexing the first AV signal or the second AV signal output from the AV switch and the second broadcast signal multiplexed with the second signaling signal and the second ESG signal,
And a broadcast retransmission unit. 9. The method of claim 8,
Wherein the broadcast conversion unit comprises:
A service list table (SLT) data of low level signaling (LLS) data extracted from the first signaling signal, a service layer signaling (SLS) of a real time object delivery over unidirectional transport (ROUTE) Service layer signaling (SLS) data including service data, service layer signaling data, and service layer signaling (SLS) data of an MMT (MPEG Media Transport) protocol according to the local broadcast information, And a signaling conversion unit for generating the second signaling signal including service layer signaling (SLS) data, and
An ESG converting unit for converting the service data, the schedule data and the content data of the first ESG signal according to the local broadcasting information and generating the second ESG signal including the converted service data, the schedule data and the content data,
And a broadcast retransmission unit. The method of claim 9,
Wherein the signaling conversion unit comprises:
A decoder for decoding the first signaling signal to extract low level signaling (LLS) data, service layer signaling (SLS) data of the ROUTE protocol and service layer signaling (SLS) data of the MMT protocol,
Some items in the service list table (SLT) data of the decoded low level signaling (LLS) data, some items of USBD (User Service Bundle Description) among the service layer signaling (SLS) data of the ROUTE protocol, S A signaling integration module for converting at least one item of the USBD among some items of the Service-based Transport Session Instance Description (TSID), Service Level Signaling (SLS) data of the MMT protocol, and
(SLS) data of low level signaling (LLS) data including the transformed items, service layer signaling (SLS) data of the ROUTE protocol and service layer signaling (SLS) data of the MMT protocol An encoder for encoding the data to generate the second signaling signal;
And a broadcast retransmission unit. 11. The method of claim 10,
Wherein the signaling integration module comprises:
A base URL (Uniform Resource Locator) for acquiring an identifier of an entire broadcast stream, an ESG or a service layer signaling file among service list table (SLT) data of the low level signaling (LLS) data, At least one of a service identifier, a service name, and a URL for accessing Internet signaling for a service,
An Internet identifier for identifying a T-UHD (Ultra High Definition) service among service layer signaling (SLS) data of the ROUTE protocol, a reference identifier for a service entry matching the low level signaling (LLS), a T- At least one of a reference identifier for a corresponding service element in a User Service Description ("
An Internet identifier identifying a T-UHD service among service layer signaling (SLS) data of the MMT protocol, a reference identifier for a service entry matching a low level signaling (LLS), a T-UHD service name, And converts at least one of the broadcast signals. The method of claim 9,
Wherein the ESG conversion unit comprises:
A decoder for decoding the first ESG signal to extract service data, schedule data, and content data,
An integrated DB for storing service data, schedule data and content data extracted by the decoder,
An operator interface unit for providing an inquiry screen including data stored in the integrated DB and reflecting the information input by the operator to the data stored in the integrated DB,
The ESG data including service data, schedule data, and content data reflecting the information input by the operator, encodes the ESG data,
And a broadcast retransmission unit. A communication device connected to the first broadcasting station through a distribution network and connected to the broadcasting receiving device through a broadcasting network to transmit and receive a broadcasting signal,
A memory for storing a program for converting a first broadcast signal received from the first broadcast station into a second broadcast signal and transmitting the second broadcast signal to the broadcast network,
And at least one processor for executing the program,
The program includes:
Extracts an AV (Audio, Video) signal, a signaling signal, and an ESG (Electronic Service Guide) signal from the first broadcast signal,
Converts the signaling signal and the ESG signal according to pre-set or local broadcasting information input by an operator,
And instructions for generating a second broadcast signal by multiplexing the converted signaling signal, the ESG signal, and the AV signal. The method of claim 13,
Further comprising an operator interface unit for receiving the local broadcasting information,
The program includes:
A service list table (SLT) data of low level signaling (LLS) data extracted from the signaling signal, a service layer signaling (SLS) of a Real Time Object Delivery over Unidirectional Transport (ROUTE) Signaling data, and Service Layer Signaling (SLS) data of an MMT (MPEG Media Transport) protocol according to the local broadcasting information,
And instructions for converting service data, schedule data, and content data of the ESG signal according to the local broadcast information.

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