KR20150140147A - Method and apparatus for supporting backword compatibility in hybrid broadcasting environment - Google Patents

Method and apparatus for supporting backword compatibility in hybrid broadcasting environment Download PDF

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Publication number
KR20150140147A
KR20150140147A KR1020140068558A KR20140068558A KR20150140147A KR 20150140147 A KR20150140147 A KR 20150140147A KR 1020140068558 A KR1020140068558 A KR 1020140068558A KR 20140068558 A KR20140068558 A KR 20140068558A KR 20150140147 A KR20150140147 A KR 20150140147A
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South Korea
Prior art keywords
application program
version
terminal
ait
address information
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KR1020140068558A
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Korean (ko)
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류영선
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삼성전자주식회사
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Priority to KR1020140068558A priority Critical patent/KR20150140147A/en
Priority to PCT/KR2015/005647 priority patent/WO2015186986A1/en
Publication of KR20150140147A publication Critical patent/KR20150140147A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast

Abstract

Disclosed are a method and a device for providing lower level version compatibility for hybrid broadcasting. A method for providing lower level version compatibility for hybrid broadcasting according to the present invention comprises the steps of: receiving a broadcasting stream through a broadcasting channel, and extracting an application information table (AIT) from the broadcasting stream; extracting address information of an application program from the AIT when a version of a terminal is equivalent to or higher than a version of an application program provided from the AIT, and driving the application program by using the address information; and extracting address information of an application program of a lower level version from a descriptor tag corresponding to a version of the terminal included in the AIT when a version of the terminal is lower than a version of the application program provided from the AIT, and driving the application program of a lower level version by using the address information.

Description

[0001] METHOD AND APPARATUS FOR SUPPORTING BACKWORD COMPATIBILITY IN HYBRID BROADCASTING ENVIRONMENT [0002]

The present invention relates to a method and apparatus for providing compatibility with a lower version of an application program in a broadcasting environment in which a broadcast channel and a broadband channel are simultaneously provided.

The HbbTV (Hybrid Broadcasting TV) standard established in Europe is one of technologies for hybrid broadcasting which is concurrently connected to broadcast channels and broadband channels. The HbbTV standard defines an environment in which broadcasting information is received through a broadcasting network and data can be received through a connected IP (Broadband Internet Protocol) broadband channel.

The HbbTV standard is v1.1 in 2010 and now HbbTV v1.1 service is provided by broadcasting companies in many European countries and HbbTV v1.1 is provided from many terminals (DTV (Digital Television), STB (Set Top Box) .1 standards. However, the HbbTV v1.1 standard only provides a basic framework for providing application programs that are linked with broadcasts. Therefore, the need for expansion has been constantly raised, and adaptive streaming technology based on HbbTV v1.1 Supported v1.5 standards were enacted in 2012, and the manufacturers that previously manufactured v1.1-based terminals and the broadcasters who provided the service are preparing to support it. In addition, HbbTV v2.0 specification works supporting HTML5 (Hypertext Markup Language version 4) -based application program environment is changed to HTML5 (Hypertext Markup Language version 5) and companion screen is in progress.

As the availability of the hybrid broadcasting environment utilizing the IP broadband network is steadily expanding, various services using the IP broadband network have been increasingly required to support the new technology. HbbTV, which establishes hybrid broadcasting standards, therefore continues to reflect these requirements.

However, unlike mobile terminals, DTV has a comparatively long replacement period (7 to 10 years) since its launch, and it is not easy to replace software (SW) unlike a PC (personal computer). Accordingly, when a broadcaster provides services according to the latest standards, there arises a problem that users having existing legacy terminals can not use the services.

In order to solve this problem, it is possible to consider a method of supporting all the functions of the lower standard in the new standard. However, in this case, various restrictions of the function of the new standard may occur. In this case, There is no guarantee.

The present invention provides a method and apparatus for providing compatibility with a lower version of an application program in a broadcast environment where an existing broadcast channel and an IP broadband channel are simultaneously provided.

The present invention provides a method and apparatus for supporting compatibility with an old terminal in a broadcasting system when the terminal supporting the hybrid broadcasting is an old terminal that can not support the latest version of the application program.

The present invention provides a method and apparatus for maintaining compatibility with a terminal supporting a lower standard when a broadcasting service provider provides a service in a hybrid broadcasting environment in which a broadcast channel and a broadband channel are concurrently connected.

The present invention provides a method and apparatus for delivering application program information for a old version terminal to a broadcast channel in a hybrid broadcasting environment in which a broadcast channel and a broadband channel are concurrently connected.

A method according to an embodiment of the present invention comprises: A method of providing a lower version compatibility for a hybrid broadcast, the method comprising: receiving a broadcast stream through a broadcast channel and extracting an application information table (AIT) from the broadcast stream; Extracting the address information of the application program from the AIT and running the application program using the address information if the version of the terminal is lower than the version of the application program provided by the AIT Extracting address information of a lower version application program from the descriptor tag corresponding to the version of the terminal included in the AIT, and driving the lower version application program using the address information.

A method according to an embodiment of the present invention comprises: A method of providing a lower version compatibility for a hybrid broadcast, the method comprising: receiving a broadcast stream through a broadcast channel and extracting an application information table (AIT) from the broadcast stream; Transmitting an application program request including an identifier header identifying a requesting application and a user header identifying a version of the terminal to the support server via the Internet protocol; And receiving a response including information from the support server.

A method according to an embodiment of the present invention comprises: A method for providing a downward version compatibility for a hybrid broadcast, the method comprising: receiving an application program request from the terminal through an Internet protocol; identifying an application program requested from an identifier header included in the application program request; Identifying a version of the terminal from the user header included in the request; and delivering the address information of the version of the application program corresponding to the terminal to the terminal.

An apparatus according to an embodiment of the present invention includes: A terminal apparatus for supporting hybrid broadcasting, the terminal apparatus comprising: a receiver for receiving a broadcast stream through a broadcast channel; an extraction unit for extracting an application information table (AIT) from the broadcast stream and comparing the version of the terminal with a version of the application program provided by the AIT; Extracts the address information of the application program from the AIT, drives the application program using the address information, and if the version of the terminal is lower than the version of the application program provided in the AIT, Extracting address information of a lower version application program from the descriptor tag corresponding to the version of the terminal included in the terminal program, and driving the lower version application program using the address information.

An apparatus according to an embodiment of the present invention includes: A terminal apparatus for supporting hybrid broadcasting, the terminal apparatus comprising: a receiver for receiving a broadcast stream through a broadcast channel and receiving a response including address information of a version of the application program corresponding to the terminal from the support server; An application information table (AIT) is extracted and, if the support server flag included in the AIT is set, an application header including an identifier header for identifying the requesting application and a user header for identifying the version of the terminal A processor for generating a program request, and a transmitter for transmitting the application program request to a support server.

An apparatus according to an embodiment of the present invention includes: A server for supporting hybrid broadcasting, comprising: a network interface for receiving an application program request from a terminal through an Internet protocol and delivering a response including address information of a version of the application program corresponding to the terminal to the terminal; Identifies the requested application program from the identifier header included in the request, identifies the version of the terminal from the user header included in the application program request, and generates a response including the address information of the version of the application program corresponding to the terminal Lt; / RTI >

FIG. 1 illustrates a system configuration of a hybrid broadcasting environment according to an embodiment of the present invention.
FIG. 2 illustrates an example of a system configuration for providing downward compatibility according to an embodiment of the present invention.
3 is a diagram for explaining compatibility between versions in a hybrid broadcasting environment.
4 is a flowchart illustrating an operation of a terminal according to an embodiment of the present invention.
5 is a flowchart illustrating an operation of a support server according to an exemplary embodiment of the present invention.
6 is a block diagram illustrating a structure of a UE according to an embodiment of the present invention.
7 is a block diagram illustrating a structure of a support server according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

FIG. 1 illustrates a system configuration of a hybrid broadcasting environment according to an embodiment of the present invention.

1, a hybrid terminal 110 receives broadcast content through a DVB (Satellite Digital Video Broadcast) satellite 145 and an uplink antenna 140, and receives broadcast content through an IP broadband channel To receive information of an application program for a broadcast service and a broadcast service. The Broadcaster and Application Provider 120 provides audio / video content and application data and signaling via the uplink antenna 140 while providing application data and signaling to the application hosting server 130 on the Internet 100. [ And audio / video content. In addition, the hybrid terminal 110 can interwork with a bidirectional service through a flow of a back channel through IP.

In the hybrid broadcasting environment in which the broadcast channel and the broadband channel are concurrently connected as described above, the broadcasting company 120 provides application program information for the old version terminal through the broadcasting channel in order to maintain compatibility with the terminal supporting the lower standard do.

FIG. 2 illustrates an example of a system configuration for providing downward compatibility according to an embodiment of the present invention. As shown in the figure, the terminal 210 can concurrently connect channels with a broadcasting provider 220, a resolution server 230, and a web server 240.

Each component plays a role as follows.

The broadcasting company 220 refers to a broadcasting network for transmitting a broadcasting stream. In a hybrid broadcast environment, a broadcast stream includes an Application Information Table (AIT) 225 that represents information about an application program. The AIT 225 provides information about an application program, and additionally includes information of an application program capable of operating in an older version terminal.

The terminal 210 may be implemented as a digital television (DTV) or a set-top box (STB) and has an AIT filter 216 for receiving an AIT 225 from a broadcast network through a broadcast channel. The AIT filter 216 extracts the AIT 225 from the broadcast stream and provides the application program information to the web browser 212. In addition, the AIT filter 216 parses the AIT 225 to provide the old version application program information.

The support server 230 is a server for providing information of an application program. If the information of the application program associated with the broadcast is not established at the time of creation of the broadcast stream, or if later change is necessary, accurate application program information can be provided through the support server 230.

Web server 240 provides an application program. Web server 240 may reside within a broadcast network or within another network. The application program can be composed of at least one of HTML, Cascade Style Sheet (CSS), and JavaScript. One web server 240 may provide different versions of various HbbTV application programs and several web servers may provide different versions of the application programs. The address of the web server providing the application program is identified by a URL (Uniform Resource Locator).

The web browser 212 provided in the terminal 210 is an essential component for executing an application program.

The application program 214 is an application program executed in the web browser 212 and is generally configured to include at least one of HTML, CSS, JavaScript, images, and moving images.

The AIT 225 may include a new descriptor to identify the old application program information and identify it with a HbbTV descriptor tag. Table 1 shows an example of the AIT 225 including a newly defined descriptor.

No. of bits Identifier Value application_descriptor () {   descriptor_tag 8 uimsbf   descriptor_length 8 uimsbf   application_profiles_length 8 uimsbf   for (i = 0; i <N; i ++) {     application_profile 16 uimsbf     version_major 8 uimsbf     version_minor 8 uimsbf     version_micro 8   }   service_bound_flag One uimsbf   visibility 2 uimsbf   reserved_future_use 5 uimsbf   application_priority 8 uimsbf   HbbTV11   HbbTV15   RS_flag   for (i = 0; i <N; i ++) {     transport_protocol_label 8 uimsbf   } }

The application descriptor included in the AIT 225 is identified by a descriptor tag, and includes address information for an application program of a specific version as application information of an old version, a flag indicating that an application program is separately provided through the support server 230 Or the like.

The HbbTV 11, which may be included in the AIT 225 as an example, provides URL information of an application program when an application program for a terminal supporting HbbTV 1.1 is provided.

As an example, HbbTV 15, which may be included in the AIT 225, provides URL information of an application program when an application program for a terminal supporting HbbTV 1.5 is provided.

The RS_flag is set when the information of the application program is provided through the support server 230, and the URL of the support server 230 is described in the URL address of the general application program.

3 is a diagram for explaining compatibility between versions in a hybrid broadcasting environment. As shown in the figure, compatibility between the DTV 310 supporting v1.1, the DTV 315 supporting v2.0, the application program 320 created in v1.1, and the application program 325 created in v2.0 .

Referring to FIG. 3, when the application program 320 created in v1.1 is executed (302) in the terminal 310 supporting v1.1, the application program 320 can be normally executed.

When the application program 325 created in v2.0 is executed (304) in the terminal 315 supporting v2.0, the application program 325 operates normally.

When the application program 320 written in v1.0 is executed (306) in the terminal 315 supporting v2.0, since the higher version specification includes the functions of the lower version specification, the higher version specification The supporting terminal 315 can normally execute the application program 320 written in the lower version.

When an application program 325 written in v2.0 is executed in the terminal 310 supporting v1.1 (308), the application program created in the high version specification can not be supported by the terminal supporting the low version specification The application program 325 can not be normally executed in the terminal 310 because it may include various functions.

In this case (308), the terminal 310 obtains the address information of the application program of the same version as the terminal 310 from the AIT received through the broadcast channel, and can access and drive the application program from the address information.

4 is a flowchart illustrating an operation of a terminal according to an embodiment of the present invention.

Referring to FIG. 4, in step 405, a terminal receives a broadcast stream through a broadcast channel and extracts an AIT from the broadcast stream. In step 410, the terminal checks the version of the application program provided in the AIT from the extracted AIT. If the version of HbbTV supported by the terminal is higher than or equal to the version of the application program provided in the AIT, the terminal proceeds to step 415. [ As an example, if the version of the terminal is v1.1 and the AIT provides an application program of v1.1, the terminal may proceed to process 415.

In step 415, the terminal extracts the URL of the application program from the AIT, and in step 420 accesses the URL through the web browser to start the application program.

On the other hand, if the version of HbbTV supported by the terminal is lower than or different than the version of the application program provided in the AIT, the terminal proceeds to step 425. As an example, if the version of the terminal is v1.1 and the AIT provides an application program of v2.0, the terminal proceeds to step 425.

In step 425, the terminal checks whether the HbbTV descriptor tag corresponding to the HbbTV version of the terminal is included in the AIT. If the version of the terminal is v1.1, the terminal searches for the HbbTV11 field from the AIT. If the descriptor tag is included, the terminal extracts the URL from the HbbTV descriptor tag in step 430, and proceeds to step 420 to access the URL through the web browser to drive the application program.

If the descriptor tag does not exist in the AIT in step 425, the terminal is not receiving an application program supporting the version of the terminal. Therefore, in step 435, the terminal determines that the application program can not be operated, Notifies the user that the application program can not be operated, and ends the operation.

An AIT may be provided in XML form in order to provide information of an application program not linked to broadcasting or in case the terminal can not receive the AIT. Table 2 shows XMLAIT defined to provide information of an application program according to an embodiment of the present invention.

<xsd: complexTypename = "HBBTVApplicationSpecificDescriptor">
<xsd: complexContent>
<xsd: extension base = "mis: ApplicationSpecificDescriptor">
<xsd: element name = "OldVersion" type = "OldVersionType" minOccurs = "0" maxOccurs = "unbounded"/>
</ xsd: extension>
</ xsd: complexContent>
</ xsd: complexType>

<xsd: complexType name = "OldVersionType">
<xsd: complexContent>
<xsd: extension base = "mis: ApplicationSpecificDescriptor">
<xsd: attribute name = "HbbTV11URL" type = "xsd: anyURI"/>
<xsd: attribute name = "HbbTV15URL" type = "xsd: anyURI"/>
</ xsd: extension>
</ xsd: complexContent>
</ xsd: complexType>

Next, an embodiment will be described in which information of an application program is provided from a separate server without being provided with an HbbTV application program. The following embodiments can be used when the information of the application program associated with the broadcast is not determined at the time of creation of the broadcast stream, the change is required later, or the terminal can not process the newly defined AIT.

Instead of describing the actual address of the application program in the AIT at the time of creation of the broadcast stream, the broadcaster describes the URL of the support server capable of requesting the address of the application program. In this case, RS_flag of the AIT is set to 1.

Then, the terminal requests the application program to the support server using the URL. Table 3 shows an example of an application program request transmitted by the terminal.


GET / Resolution-Server_URL
x-AppID: 0xdkjfjijdd
User-Agent: HbbTV / 1.1.1 (;;;;)

The meaning of each header included in the application program request of Table 3 is as follows.

GET is a field that describes the URL of the requesting application program. The terminal inputs the URL extracted from the AIT to the GET.

The x-AppID is a field for describing the ID of the application program. The terminal inputs the ID received from the AIT into the x_AppID.

The User-Agent is a field for describing information on the HbbTV version supported by the UE. The support server checks the version of the terminal based on the User_Agent.

Upon receipt of the application program request, the support server identifies an application program to be delivered to the terminal from the information of the x-AppID, and determines an application program suitable for the terminal version from the HbbTV version of the terminal delivered to the User-Agent.

Table 4 shows the response of the support server to the request of the terminal.


HTTP / 1.1 302 FOUND
Location: http://10.10.10.10/HbbTV11.html

If the application program corresponding to the requested application program ID and the HbbTV version of the terminal exists in the support server, the support server transmits the address information of the application program to the terminal using the HTTP redirection function.

If no corresponding application program is found, a 404 NOT Found response code is sent from the support server to the terminal. Table 5 shows the definitions of the response codes that can be received from the support server.

Response code Description 302 Found Application program found. Provide information (URL) of the application program in the Location header 404 Not Found The application program is not found. Application program termination 503 Service Unavailable The application program is found but does not support the HbbTV version of the terminal. Application program exit.

5 is a flowchart illustrating an operation of a support server according to an exemplary embodiment of the present invention.

Referring to FIG. 5, in step 505, the support server receives an application program request from the terminal through the Internet protocol, identifies the requested application program from the x-AppID header included in the application program request in step 510, It is determined whether the information of the application program exists. If there is no information of the application program, the support server transmits a response code indicating no application program information to the terminal in step 535.

If the information of the application program exists, the support server checks the HbbTV version that the terminal can support from the User-Agent header included in the application program request in step 515. [

If the terminal supports an upper version, for example, HbbTV v2.0, the supporting server transmits information (URL) of the corresponding application program to the terminal using the 302 code in step 525.

On the other hand, if the terminal supports HbbTV v1.1 as a lower version, for example, in step 520, the support server checks whether the lower version of the application program or the information about the application program is stored in the memory. If the information exists, the support server transmits information (URL) of the corresponding application program to the terminal using the 302 code in step 525.

On the other hand, if the information of the corresponding application program is not stored, the support server notifies the terminal that the HbbTV version is not supported by the support server in step 530.

6 is a block diagram illustrating a structure of a UE according to an embodiment of the present invention.

6, the terminal includes a processor 610, a receiving unit 620, a transmitting unit 625, a memory 640, and a user interface (UI) 630.

The receiving unit 620 receives the broadcast stream from the broadcasting company through the broadcasting channel, and transmits the received broadcasting stream to the processor 610. The processor 610 extracts the AIT from the broadcast stream to obtain the address information of the application program of the proper version to the terminal, and acquires and drives the application program through the transmitter 625 based on the address information. The memory 640 may store the content received via the broadcast stream, the AIT, the application program, and the like. The UI 630 may output the content received via the broadcast stream or may receive user input and forward it to the processor 610. [

In another embodiment, the processor 610 requests address information of a desired version of the application program to the support server through the transmission unit 625 using the URL of the support server extracted from the AIT, And receive a response including the address information.

7 is a block diagram illustrating a structure of a support server according to an embodiment of the present invention.

Referring to FIG. 7, the support server includes a processor 710, a network interface 720, and a memory 730. The network interface 720 receives the application program request from the terminal over the Internet and forwards it to the processor 710. In response to the request, the processor 710 determines whether the application program or the address information that the terminal can run is stored in the memory 730, and transmits a response including the address information of the application program to the network interface 720. [ To the terminal. The memory 730 may store information of at least one application program for at least one version of HbbTV.

In accordance with at least one embodiment of the present invention operating in the above-described manner, in a hybrid broadcasting environment in which a broadcast channel and a broadband channel are concurrently connected to each other, The terminal can continuously use the service without replacing it immediately, and the terminal manufacturer can save a huge SW upgrade cost to support the new service in the old terminal. In addition, the service provider can guarantee the provision of the existing service, so that the user can naturally move to the new service.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

Claims (6)

A method for providing downward compatibility for hybrid broadcasting,
Receiving a broadcast stream through a broadcast channel and extracting an application information table (AIT) from the broadcast stream;
Extracting address information of the application program from the AIT if the version of the terminal is higher than or equal to the version of the application program provided by the AIT, and driving the application program using the address information;
Extracts address information of a lower version application program from the descriptor tag corresponding to the version of the terminal included in the AIT if the version of the terminal is lower than the version of the application program provided by the AIT, And operating the lower version of the application program.
A method for providing downward compatibility for hybrid broadcasting,
Receiving a broadcast stream through a broadcast channel and extracting an application information table (AIT) from the broadcast stream;
Transmitting to the support server an application program request including an identifier header identifying an application to be requested and a user header identifying a version of the terminal through the Internet protocol when the support server flag included in the AIT is set; ,
And receiving, from the support server, a response including address information of a version of the application program corresponding to the terminal.
A method for providing downward compatibility for hybrid broadcasting,
Receiving an application program request from the terminal through an Internet protocol;
Identifying a requested application program from an identifier header included in the application program request;
Identifying a version of the terminal from a user header included in the application program request;
And transmitting address information of a version of the application program corresponding to the terminal to the terminal.
A terminal apparatus for supporting hybrid broadcasting,
A receiver for receiving a broadcast stream through a broadcast channel;
Extracts an application information table (AIT) from the broadcast stream, extracts address information of the application program from the AIT if the version of the terminal is higher than or equal to the version of the application program provided by the AIT, If the version of the terminal is lower than the version of the application program provided in the AIT, extracts address information of a lower version of the application program from the descriptor tag corresponding to the version of the terminal included in the AIT And a processor for operating the lower version of the application program using the address information.
A terminal apparatus for supporting hybrid broadcasting,
A reception unit for receiving a broadcast stream through a broadcast channel and receiving a response including address information of a version of the application program corresponding to the terminal from the support server;
Extracting an application information table (AIT) from the broadcast stream and, when the support server flag included in the AIT is set, transmitting an identifier header for identifying the requesting application and a user header A processor for generating an application program request,
And a transmitter for transmitting the application program request to a support server.
In a server supporting hybrid broadcasting,
A network interface for receiving an application program request from the terminal through an Internet protocol and for transmitting a response including address information of a version of the application program corresponding to the terminal to the terminal;
Identifying the requested application program from the identifier header included in the application program request, identifying the version of the terminal from the user header included in the application program request, and storing the address information of the version of the application program corresponding to the terminal And a processor for generating a response.
KR1020140068558A 2014-06-05 2014-06-05 Method and apparatus for supporting backword compatibility in hybrid broadcasting environment KR20150140147A (en)

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PCT/KR2015/005647 WO2015186986A1 (en) 2014-06-05 2015-06-05 Method and apparatus for providing backward compatibility for hybrid broadcast

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CN109151587A (en) * 2018-09-12 2019-01-04 青岛海信传媒网络技术有限公司 Loading method, device, TV and the readable storage medium storing program for executing of HbbTV application

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KR100732161B1 (en) * 2005-11-04 2007-06-27 엘지전자 주식회사 Digital Broadcasting System and Method for Providing Run Application of Digital Broadcasting Data in thereof and Digital Broadcasting Terminal
KR100777409B1 (en) * 2006-06-05 2007-11-19 주식회사 알티캐스트 Method for provisioning network service provider application in digital interactive broadcasting
KR100837697B1 (en) * 2006-09-19 2008-06-13 한국전자통신연구원 Data Broadcasting Platform based on GEM and its Method for the Interoperability Guarantee of Applications among Data Broadcasting
KR101234061B1 (en) * 2010-11-23 2013-02-15 한국전자통신연구원 Apparatus for delivering application information in digital broadcasting system and method therof
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CN109151587A (en) * 2018-09-12 2019-01-04 青岛海信传媒网络技术有限公司 Loading method, device, TV and the readable storage medium storing program for executing of HbbTV application

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