KR101291066B1 - Apparatus and method for content retransmission between iptv equipment - Google Patents

Abstract

The present invention relates to a content retransmission technology between IPTV terminals, in which an IPTV broadcasting service subscriber corresponds to real-time broadcasting or VOD in an IPTV broadcasting service using a downloadable reception control system (DCAS) and an IPTV terminal with guaranteed mobility. It is possible to purchase a retransmission right for a particular paid broadcast content, and to retransmit the broadcast content in a secure manner to an IPTV terminal of any other IPTV terminal holder regardless of whether or not the corresponding IPTV service is subscribed to enable viewing. According to the present invention, since a downloadable reception restriction system is applied and an IPTV terminal with guaranteed mobility, the user can receive and watch an IPTV broadcast service retransmitted from another IPTV broadcast service subscriber regardless of whether or not to subscribe to the IPTV broadcast service. You can expand your reach.

Description

Apparatus and method for retransmitting content between IPTV terminals {APPARATUS AND METHOD FOR CONTENT RETRANSMISSION BETWEEN IPTV EQUIPMENT}

The present invention relates to a broadcast content stream retransmission technology between an IPTV (Internet Protocol Television) terminal-to-terminal, which is guaranteed mobility through a downloadable conditional access system (CAS), and in particular, an IPTV head in an IPTV retransmission service providing terminal. An apparatus and method for retransmitting content between IPTV terminals suitable for retransmitting a broadcast stream to another IPTV terminal after acquiring a retransmission right from an end device.

In general, the CAS is a security system for broadcasting content that allows a subscriber who purchases a right to subscribe to a specific channel or program through a legitimate purchase procedure in digital multimedia broadcasting (DMB), cable broadcasting, or IPTV broadcasting service. As a system, a service provider encrypts broadcast content corresponding to a specific paid channel or program and delivers it to a user, and delivers an entitlement to a set-top box of a subscriber who purchases the corresponding broadcast content, so that only subscribers who are eligible to receive the broadcast can receive the broadcast. The content is decoded for viewing.

On the other hand, the downloadable reception restriction system (DCAS: Downloadable-CAS) provides a security system that can be replaced or upgraded by connecting to a DCAS server from a subscriber set-top box to a network and downloading CAS software. The DCAS provides a more flexible environment for broadcasters, CAS providers, and service subscribers by providing an open structure that can be replaced and upgraded online compared to a CAS which is pre-installed and fixedly driven in a conventional set-top box.

Also, in recent years, technologies and standards have been released to allow users to use existing terminals even when selecting and moving IPTV broadcasting providers by circumventing restrictions on the use of IPTV terminals depending on existing IPTV broadcasting providers.

In the broadcast content reception method using a conventional access restriction system (CAS) operating as described above, a subscriber who has previously purchased a reception right through a service provider requests the broadcast service provider from the service provider. Since the provider provides the requested broadcast content, it is possible to transmit broadcast content only between the service provider and the subscriber, and there is a problem in that the broadcast stream received from the service provider cannot be transmitted and received between the IPTV terminals.

Accordingly, an embodiment of the present invention provides an apparatus and method for retransmitting content between IPTV terminals, which is capable of obtaining retransmission authority from an IPTV headend device in an IPTV retransmission service providing terminal and retransmitting a broadcast stream to another IPTV terminal.

In addition, an embodiment of the present invention, any IPTV broadcast service subscriber corresponds to a real-time broadcast or VOD (Video On Demand) in an IPTV broadcast service using a downloadable reception restriction system (DCAS) and using a mobility-guaranteed IPTV terminal Purchases a right to retransmit specific paid broadcast content and retransmits the broadcast content to an IPTV terminal of any other IPTV terminal holder regardless of whether or not the corresponding IPTV service is subscribed to in a secure manner so that it can be viewed between IPTV terminals. An apparatus and method for retransmitting content are provided.

An apparatus for retransmitting content between IPTV terminals according to an embodiment of the present invention provides a user interface in association with an IPTV service subscriber station, and transmits a retransmission target broadcast content list to the IPTV service subscriber station to request at least one broadcast content. And a retransmission right purchasing environment providing processing unit for receiving the information of the retransmission service target IPTV terminal when the purchase of the retransmission right with the IPTV service subscriber terminal is received, and the retransmission service target using the information of the retransmission service target IPTV terminal. It may include a receiving authority transmission processing unit for transmitting the CAS software and the receiving authority information (EMM) to the IPTV terminal.
The apparatus for retransmitting content between IPTV terminals may further include a streaming server providing a streaming service for broadcast content requested to the IPTV service subscriber terminal in association with the retransmission right purchasing environment providing processing unit.
The apparatus for retransmitting content between the IPTV terminals may include a CAS download server for delivering pre-stored CAS software at the request of the receiving authority transmitting processor, and receiving authority for at least one content at the request of the receiving authority transmitting processor. It may further include a CAS server for transmitting the receiving authority information.
The apparatus for retransmitting content between IPTV terminals according to another embodiment of the present invention outputs a list of retransmission target broadcast contents based on the input command when the list of retransmission target broadcast contents is received by accessing the IPTV headend device, A retransmission right purchase processing unit which transmits information of a terminal to provide a broadcast content retransmission service to the IPTV headend device and performs a payment for a retransmission right; and when the payment is completed, a retransmission selected from the IPTV headend device. And a retransmission processing unit configured to receive target broadcast content and transmit the retransmission target broadcast content to the terminal.
An apparatus for retransmitting content between IPTV terminals according to another embodiment of the present invention is configured to receive and set CAS software and receiving authority information from an IPTV headend device in order to receive an IPTV broadcasting service to which a downloadable reception restriction system (DCAS) is applied. When receiving the retransmission broadcast content from the IPTV service subscriber station and the receiving rights receiving processing unit, the retransmission reception for displaying the broadcast stream for the broadcast content after receiving the confirmation on the basis of the receiving authority information set in advance It may include a processing unit.

In a method of retransmitting content between IPTV terminals according to an embodiment of the present invention, a retransmission authority purchase environment providing processor provides a user interface in conjunction with an IPTV service subscriber terminal and transmits a retransmission target broadcast content list to the IPTV service subscriber terminal. Receiving a request for at least one broadcast content, receiving a retransmission right with the IPTV service subscriber terminal, receiving information of a retransmission service target IPTV terminal, and receiving a retransmission service processing unit from the receiving authority transmission processing unit; And transmitting the CAS software and the receiving authority information (EMM) to the retransmission service target IPTV terminal using the information of.
The content retransmission method between the IPTV terminals may further include providing a streaming service for the broadcast content requested from the streaming server to the IPTV service subscriber terminal in association with the retransmission right purchasing environment providing processing unit.
The content retransmission method between the IPTV terminals may include, when the CAS download server receives the request of the reception authority transmission processing unit, delivering the stored CAS software, and when the CAS server receives the request of the reception authority transmission processing unit, The method may further include transmitting reception right information in which reception right for one content is set.
According to another embodiment of the present invention, a method for retransmitting content between IPTV terminals is outputted on a screen when a retransmission right purchase processor in the IPTV retransmission service providing terminal accesses an IPTV headend device and receives a retransmission target broadcast content list. Transmitting a selected retransmission target broadcast content list and information of a terminal to provide a broadcast content retransmission service to the IPTV headend device based on the received command, and performing a payment payment for the retransmission right; And receiving, by the retransmission processing unit in the IPTV retransmission service providing terminal, the retransmission target broadcast content selected from the IPTV headend device, and transmitting the retransmission target broadcast content to the terminal.
In a method of retransmitting content between IPTV terminals according to another embodiment of the present invention, an IPTV headend device is provided to receive an IPTV broadcasting service to which a DCAS, which can be downloaded by a receiving authority reception processing unit within an IPTV retransmission service target terminal, is applied. Receiving and setting the CAS software and the receiving authority information from the receiving station; and receiving the broadcasting content retransmitted from the IPTV service subscriber terminal by the retransmitting receiving processing unit in the IPTV retransmission service target terminal. After confirmation based on the information, the method may include displaying a broadcast stream for the broadcast content.

According to the apparatus and method for retransmitting content between IPTV terminals according to the embodiment of the present invention as described above, there are one or more effects as follows.

According to an apparatus and method for retransmitting content between IPTV terminals according to an embodiment of the present invention, a retransmission is performed from another IPTV broadcasting service subscriber regardless of whether to subscribe to an IPTV broadcasting service through a downloadable reception restriction system and a mobility-guaranteed IPTV terminal. IPTV broadcasting service can be provided.

That is, even if the IPTV service subscribers can not watch the specific IPTV broadcast content through a paid payment, it is possible to expand the scope of the content use target audience.

1 is a block diagram showing the structure of a content retransmission apparatus between IPTV terminals according to an embodiment of the present invention;
2 is a flowchart illustrating an operation procedure of an IPTV headend device according to an embodiment of the present invention;
3 is a flowchart illustrating an operation procedure of an IPTV retransmission service providing terminal according to an embodiment of the present invention;
4 is a flowchart illustrating an operation procedure of an IPTV retransmission service target terminal according to an exemplary embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In the following description of the present invention, 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 in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Each block of the accompanying block diagrams and combinations of steps of the flowchart may be performed by computer program instructions. These computer program instructions may be loaded into a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus so that the instructions, which may be executed by a processor of a computer or other programmable data processing apparatus, And means for performing the functions described in each step are created. These computer program instructions may be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, and thus the computer usable or computer readable memory. It is also possible for the instructions stored in to produce an article of manufacture containing instruction means for performing the functions described in each block or flowchart of each step of the block diagram. Computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operating steps may be performed on the computer or other programmable data processing equipment to create a computer-implemented process to create a computer or other programmable data. Instructions that perform processing equipment may also provide steps for performing the functions described in each block of the block diagram and in each step of the flowchart.

Also, each block or each step may represent a module, segment, or portion of code that includes one or more executable instructions for executing the specified logical function (s). It should also be noted that in some alternative embodiments, the functions noted in the blocks or steps may occur out of order. For example, the two blocks or steps shown in succession may in fact be executed substantially concurrently or the blocks or steps may sometimes be performed in the reverse order, depending on the functionality involved.

An embodiment of the present invention is for acquiring a retransmission right from an IPTV headend device in an IPTV retransmission service providing terminal and performing retransmission of a broadcast stream to another IPTV terminal. A downloadable reception restriction system (DCAS) is applied and mobility is achieved. In an IPTV broadcasting service using this guaranteed IPTV terminal, any IPTV broadcasting service subscriber purchases retransmission rights for specific paid broadcasting content corresponding to real-time broadcasting or VOD, and any other IPTV regardless of subscribing to the corresponding IPTV service. This is to allow the owner of the IPTV terminal to retransmit and view the broadcast contents in a safe manner.

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

1 is a block diagram showing the structure of a content retransmission apparatus between IPTV terminals according to an embodiment of the present invention.

Referring to FIG. 1, an apparatus for retransmitting content between IPTV terminals may include an IPTV headend device 100, an IPTV retransmission service providing terminal 120, and an IPTV retransmission service target terminal 140.

 The IPTV headend device 100 provides an IPTV broadcasting service to which a downloadable reception restriction system (DCAS) that downloads, installs, and operates a reception restriction system (CAS) image is applied. The purchase environment providing processor 104, the CAS download server 106, the CAS server 108, and the receiving authority transmission processor 110 may be included.

In detail, the streaming server 102 in the IPTV headend device 100 may provide a streaming service for the content requested from the IPTV retransmission service providing terminal 120 in association with the retransmission right purchasing environment providing processing unit 104.

The retransmission right purchasing environment providing processing unit 104 constructs a list of retransmission service target broadcast contents (for example, real-time broadcasting or VOD content) and provides the list to the connected IPTV terminal to purchase any broadcast contents to be purchased. Provides an environment (eg, a graphical user interface (GUI), etc.) that can be selected, and receives an IP address as information of the IPTV retransmission service target terminal 140 transmitted from the IPTV retransmission service providing terminal 120. And the payment process for the retransmission right purchase with the IPTV retransmission service providing terminal 120.

 The CAS download server 106 may store CAS software related to retransmission, and deliver the CAS software at the request of the receiving authority transmission processor 110. In addition, the CAS server 108 may store reception rights information (EMM: Entitlement Management Message) in which reception rights for at least one content stored in the IPTV headend device 100 are set, and the request of the reception rights transmission processing unit 110 is performed. Can receive the corresponding authorization information.

The receiving authority transmission processor 110 may receive CAS software related to retransmission from the CAS download server 106 and transmit the CAS software to the IPTV retransmission target IPTV terminal, that is, the IPTV retransmission service providing terminal 120, from the CAS server 108. The receiving authority information may be transmitted to the IPTV retransmission service providing terminal 120.

The IPTV retransmission service providing terminal 120 transmits the IPTV broadcasting service to which the DCAS is applied to another IPTV terminal, and may include a retransmission right purchase processing unit 122 and a retransmission processing unit 124. The retransmission right purchase processing unit 122 is connected to the IPTV broadcasting service provider, that is, the IPTV headend device 100 through a wired / wireless network communication network, and the purchase environment provided by the retransmission right purchasing environment providing processing unit 104 in the IPTV headend device 100. (Eg, a retransmission target broadcast content selection environment and an IP address input environment of the retransmission target IPTV terminal) can be displayed in the form of a user interface and a command input from a user can be processed. For example, the command input from the user may include a command for selecting specific broadcast content and an IP address input command for an IPTV retransmission service target terminal.

In addition, the retransmission right purchase processor 122 may process the payment for the retransmission right purchase processing unit 104 and the retransmission right purchase.

The retransmission processing unit 124 may receive the broadcast content requesting retransmission through the retransmission right purchase processing unit 122 from the streaming server 102 and transmit the broadcast stream transmitted from the streaming server 102 to the IPTV retransmission service target terminal 140. ) Can be sent. In this case, the transmission scheme between the IPTV retransmission service providing terminal 120 and the IPTV retransmission service target terminal 140 may use a user datagram protocol (UDP) channel.

The IPTV retransmission service target terminal 140 receives and displays the broadcast content retransmitted from the IPTV retransmission service providing terminal 120, and may include a retransmission reception processing unit 142 and a reception authority reception processing unit 144. have.

The receiving authority receiving processing unit 144 receives and installs CAS software through the receiving authority transmitting processing unit 110 of the IPTV headend device 100 to receive the IPTV broadcasting service to which the DCAS is applied, and receives and receives the receiving authority information. You can perform the setup.

Through this, the retransmission reception processing unit 142 may receive and output the receiving authority for the broadcast stream received from the IPTV retransmission service providing terminal 120 and display the received authority.

Meanwhile, the IPTV retransmission service providing terminal 120 and the IPTV retransmission service target terminal 140 may include various computer devices such as an IPTV set-top box, a mobile communication terminal, a smartphone, a personal computer, and the like, which can interoperate with a wired or wireless network. have.

2 is a flowchart illustrating an operation procedure of an IPTV headend device according to an embodiment of the present invention.

Referring to FIG. 2, the retransmission right purchasing environment providing processing unit 104 of the IPTV headend device 100 provides a broadcast content list to the IPTV retransmission service providing terminal 120 connected in step 200 to perform the IPTV retransmission service in step 202. From the providing terminal 120 receives the selection information of the broadcast content to be retransmitted.

In step 204, the IPTV retransmission service providing terminal 120 receives IP address information on the target terminal to perform the IPTV retransmission service. In this regard, the reception right transmission processing unit 110 may transmit CAS software and reception right information that can receive and receive content retransmitted to the IPTV retransmission service target terminal 140 corresponding to the IP address information.

Thereafter, in step 208, the retransmission right purchasing environment providing processing unit 104 performs payment according to the retransmission right purchasing with the IPTV retransmission service providing terminal 120. However, the payment according to the retransmission right purchase in the retransmission right purchasing environment providing processing unit 104 requests a payment to the IPTV retransmission service providing terminal 120 before transmitting the CAS software and the receiving right information to the IPTV retransmission service target terminal 140. May request to purchase retransmission rights.

3 is a flowchart illustrating an operation procedure of an IPTV retransmission service providing terminal according to an embodiment of the present invention.

Referring to FIG. 3, the retransmission right purchasing processor 122 of the IPTV retransmission service providing terminal 120 connects to the retransmission right purchasing environment providing processing unit 104 of the IPTV headend device 100 to perform retransmission right purchasing in step 300. To provide the user with a graphical user interface. When receiving the retransmission target broadcasting content list from the retransmission right purchasing environment providing processing unit 104 in step 302, the retransmission target broadcasting content list is output on the screen, and at least one retransmission target broadcasting content is selected based on a command input from the user.

In step 304, the retransmission right purchase environment providing processor 104 or the retransmission right purchasing processor 122 requests an input of an IP address for the terminal to provide the broadcast content retransmission service to the user. Accordingly, the IP address input from the user is transmitted to the retransmission right purchasing environment providing processing unit 104.

Thereafter, in step 306, the payment for the retransmission right is performed at the request of the retransmission right purchasing environment providing processing unit 104, and when the payment is completed, the broadcast content transmitted from the streaming server 102 is received in the retransmission processing unit 124. The retransmission processing unit 124 transmits the received broadcast content to the IPTV retransmission service target terminal 140.

4 is a flowchart illustrating an operation procedure of an IPTV retransmission service target terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 4, in step 400, the reception right reception processing unit 144 of the IPTV retransmission service target terminal 140 receives CAS software from the reception right transmission processing unit 110 of the IPTV headend device 100. Will receive the authorization information.

Accordingly, the CAS software is installed in the IPTV retransmission service target terminal 140, and the reception authority information is set. Subsequently, when the retransmission reception processing unit 142 receives the broadcast content transmitted from the IPTV retransmission service providing terminal 120, the broadcast content for the broadcast content is received after receiving the confirmation on the basis of the preset reception right information. Will be displayed.

As described above, an apparatus and method for retransmitting content between IPTV terminals according to an embodiment of the present invention are for acquiring retransmission authority from an IPTV headend device in an IPTV retransmission service terminal and retransmitting a broadcast stream to another IPTV terminal. In the IPTV broadcasting service using a downloadable reception restriction system (DCAS) and using a mobility-guaranteed IPTV terminal, a subscriber of an IPTV broadcasting service purchases retransmission rights for specific paid broadcasting contents corresponding to real-time broadcasting or VOD, Regardless of whether or not the IPTV service is subscribed to the IPTV terminal of any other IPTV terminal holder, the broadcast contents can be retransmitted and watched in a safe manner.

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, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims, and equivalents thereof.

100: IPTV headend device 102: streaming server
104: retransmission right purchasing environment providing processing unit 106: CAS download server
108: CAS server 110: receiving authority transmission processing unit
120: IPTV retransmission service providing terminal 122: retransmission authority purchase processing unit
124: retransmission processing unit
140: target terminal for the IPTV retransmission service
142: retransmission receiving processing unit 144: receiving authority receiving processing unit

Claims (10)

An IPTV head end device that provides an IPTV broadcasting service to which a downloadable reception restriction system (DCAS) capable of downloading, installing, and operating a CAS image;
An IPTV retransmission service providing terminal for transmitting an IPTV broadcasting service applied with DCAS to another IPTV terminal,
IPTV retransmission service target terminal for receiving and displaying broadcast content retransmitted from the IPTV retransmission service providing terminal
Device for retransmission of content between the IPTV terminal comprising a.
The method of claim 1,
The IPTV headend device,
When a user interface is provided in association with an IPTV service subscriber terminal, the broadcast content list is transmitted to the IPTV service subscriber terminal to receive at least one broadcast content, and the purchase of the retransmission right is completed with the IPTV service subscriber terminal. A retransmission authority purchasing environment providing processing unit for receiving the information of the IPTV terminal to which the retransmission service target is received;
A reception authority transmission processing unit for transmitting CAS software and reception authority information (EMM) to the retransmission service target IPTV terminal by using the information of the retransmission service target IPTV terminal;
Streaming server providing a streaming service for the broadcast content requested to the IPTV service subscriber terminal in association with the retransmission right purchasing environment providing processing unit
Device for retransmission of content between the IPTV terminal, characterized in that it comprises a.
The method of claim 2,
The IPTV headend device,
A CAS download server that delivers pre-stored CAS software at the request of the receiving authority transmission processor;
A CAS server that delivers receiving authority information for which receiving authority for at least one piece of content is set at the request of the receiving authority transmitting processor.
Device for retransmission of content between the IPTV terminal, characterized in that it further comprises.
When receiving the retransmission target broadcast content list by accessing the IPTV headend device, the retransmission target broadcast content list is selected based on the input command, and the information of the terminal to provide the broadcast content retransmission service is selected based on the input command. A retransmission authority purchase processing unit for transmitting to the terminal and performing payment for the retransmission authority;
When the payment is completed, the retransmission processing unit receives the retransmission target broadcast content from the IPTV headend device and transmits the retransmission target broadcast content to the terminal.
Device for retransmission of content between the IPTV terminal comprising a.
A receiving authority receiving processing unit for receiving and setting CAS software and receiving authority information from an IPTV headend device to provide an IPTV broadcasting service to which a downloadable reception restriction system (DCAS) is applied;
When receiving the retransmitted broadcast content from the IPTV service subscriber terminal, the retransmission reception processing unit for displaying the broadcast stream for the broadcast content after confirming the receiving right based on the preset receiving right information
Device for retransmission of content between the IPTV terminal comprising a.
Providing an IPTV broadcasting service to which a downloadable reception restriction system (DCAS), which can download, install and operate a CA system image, is provided;
Transmitting the IPTV broadcasting service to which the DCAS is applied to another IPTV terminal;
Receiving and displaying the transmitted IPTV broadcasting service
IPTV terminal content retransmission method comprising a.
The method according to claim 6,
The content retransmission method between the IPTV terminal,
Providing a user interface by interworking with the IPTV service subscriber station in the retransmission right purchasing environment providing processor, transmitting a list of broadcast content to be retransmitted to the IPTV service subscriber station, and receiving at least one broadcast content request;
When the purchase of the retransmission right is completed with the IPTV service subscriber station, receiving information of the retransmission service target IPTV terminal;
Transmitting, by a reception authority transmission processing unit, CAS software and reception authority information (EMM) to the retransmission service target IPTV terminal by using the information of the retransmission service target IPTV terminal;
Providing a streaming service for the broadcast content requested from the streaming server to the IPTV service subscriber terminal in connection with the retransmission right purchasing environment providing processing unit;
Content retransmission method between the IPTV terminal, characterized in that it comprises a.
8. The method of claim 7,
The content retransmission method between the IPTV terminal,
When the CAS download server receives the request of the receiving authority transmission processing unit, delivering the stored CAS software;
When the CAS server receives the request of the reception authority transmission processing unit, transferring the reception authority information in which reception authority for at least one content is set.
Content retransmission method between the IPTV terminal, characterized in that it further comprises.
Providing IPTV retransmission service When the retransmission authority purchase processing unit in the terminal accesses the IPTV headend device and receives the retransmission target broadcast content list, the retransmission target broadcast content list and the broadcast content retransmission service are output on the screen. Transmitting information of a terminal to be provided to the IPTV headend device and performing payment for retransmission authority;
When the payment is completed, the retransmission processing unit in the IPTV retransmission service providing terminal receives the retransmission target broadcast content selected from the IPTV headend device, and transmits the retransmission target broadcast content to the terminal to provide the broadcast content retransmission service. process
IPTV terminal content retransmission method comprising a.
Receiving and setting CAS software and receiving authority information from an IPTV headend device in order to receive an IPTV broadcasting service to which a DCAS, which is downloadable by a receiving authority receiving processing unit in an IPTV retransmission service target terminal, is applied;
When the retransmission reception processing unit in the IPTV retransmission service target terminal receives the retransmitted broadcast content from the IPTV service subscriber terminal, the broadcast stream for the broadcast content is received after receiving confirmation on the basis of the reception right information for which the reception right is set. Display process
IPTV terminal content retransmission method comprising a.

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