KR101013060B1 - The system of the real time broadcasting to the terminal via branch broadcasting line of the apartment or building by IPTV enterpriser or broadcasting program provider - Google Patents

Abstract

The present invention is a method for transmitting a real-time broadcast to a subscriber terminal from a main headend system of an IPTV provider (service provider) or a broadcast program provider. Head-end system) is installed in the broadcasting relay broadcasting server to send the sender's real-time broadcasting contents to the specific channel frequency band of the local broadcasting line network, so that the subscriber's broadcasting terminal does not use the internet bandwidth at all. A method and system for smoothly providing a real-time broadcast (HD) of the present invention.

The present invention provides a method for transmitting real-time broadcasting to a subscriber terminal in a multi-family house from a main headend system of an IPTV provider or broadcast program provider. Receiving stream data transmitted in real time from main headend system of IPTV provider or broadcasting program provider and transmitting broadcasting contents to subscriber terminal in apartment house through premises broadcasting line to provide high quality real time broadcasting to subscriber terminal It relates to a method and a system. In this case, in the conventional case, broadcast content must always be flowed through the premises Internet network to the broadcasting subscriber terminal in the apartment house, but as it is not necessary, the Internet network efficiency of the broadcasting receiver can be significantly increased.

Through the present invention, the IPTV service provider or broadcast program provider transmits high-quality HD broadcast content, which has been a problem due to the Internet bandwidth limitation of the broadcast subscriber, to the broadcast receiving subscriber terminal through the premises broadcasting network by utilizing the broadcasting server's broadcasting server. The Internet network of the broadcasting subscribers provides various broadcasting and high quality broadcasting services to the broadcasting receiver subscriber terminal of the apartment house by directly transmitting the broadcasting contents in real time from the headend system of the broadcasting sender to the broadcasting receiver subscriber terminal. It becomes possible.

In this case, in connection with the security of broadcasting contents and the authentication of receiving rights of broadcasting subscribers, the authentication system such as DRM, CAS, etc. may be used for the broadcasting server's broadcasting server installed in the main headend system of the IPTV provider or broadcasting program provider, and the apartment house, and broadcasting reception. By interworking with the subscriber terminal, mutual control between the broadcast transmitter and the broadcast receiver can be achieved.

IPTV, Broadcasting Receiving Equipment (MATV), Data Network, Coaxial Cable, Bandwidth, Encoder, Modulation, Broadcasting Broadcasting Server, Set Top Box

Description

System that the real time broadcasting to the terminal via branch broadcasting line of the apartment or building by IPTV enterpriser or broadcasting program provider}

The present invention provides a method for transmitting real-time broadcasting to a subscriber terminal in a multi-family house from a main headend system of an IPTV provider or broadcast program provider. Receiving stream data transmitted in real time from main headend system of IPTV provider or broadcasting program provider and transmitting broadcasting contents to subscriber terminal in apartment house through premises broadcasting line to provide high quality real time broadcasting to subscriber terminal It relates to a method and a system.

Today, as IPTV services are in orbit, various functions that have been available through computers and the Internet are moving to TVs.

As IPTV services become full-fledged, various functions such as online games, home shopping, home banking, search, and MP3, which have been used through computers and the Internet, are gradually moving to TVs. According to the relevant industry, IPTV providers such as KT, SK Broadband and My LGTV have added additional services one after another, absorbing various functions available through the Internet, and IPTV is becoming the center of home network.

Through IPTV, it is possible to use on-demand content broadcasting services such as real-time broadcasting of news, stock price, etc., on-demand broadcasting such as VOD, and messenger, text transmission, e-mail, and chat. In other words, it is configured to obtain relevant information by ordering necessary data information through the Internet as well as real time broadcasting and on-demand service.

FIG. 1 is a block diagram illustrating a conventional conventional IPTV service system. As shown in FIG. 1, broadcast content is transmitted to a subscriber station through a distributed server for each region through an internet network (data network).

As shown in the figure, the traffic problem of the network system is the biggest problem of the IPTV service using the Internet network, as the distributed servers for each region increase the number of individual IPTV subscribers and transmit huge data packets while streaming in real time. Can be.

In general, in case of a multi-unit house such as an assembly building or an apartment, a network communication line is installed inside itself, and in case of using a general UTP communication cable for a subscriber network, 100Mbps or 1000Mbps in an area where an optical cable is installed Is installed to be used for communication with maximum bandwidth.

In order to provide an IPTV service, broadcasting is continuously transmitted to a subscriber's terminal through a communication cable through an internet network (data network). At this time, a bandwidth limitation, which is a weak point of wired communication of the data network, is encountered.

In the case of an IPTV provider, the broadcaster generally receives content from a PP (program provider) and broadcasts it to an IPTV subscriber terminal via a communication cable, and usually uses 30 to 60 channels.

In case of general broadcasting channel, the bandwidth used by one channel is mainly 1Mbps, and in case of 60 channel, 60Mbps bandwidth is always needed for real time broadcasting, and in case of HD broadcasting, about 20Mbps bandwidth is used. In case of transmitting terrestrial HD digital broadcasting data (KBS 1,2, MBC, SBS, EBS), which is basic broadcasting, 100Mbps is basically required.In addition, if broadcasting subscriber subscribes to on-demand broadcasting channel, download broadcasting channel is required. In addition, since 100Mbps bandwidth is required, the 100Mbps subscriber network has a problem of physical cost and economic cost of replacing all subscriber networks with optical cables in order to use IPTV service.

In order to solve the above problems, the present invention is to provide to each individual subscriber in the main headend (HEAD END SYSTEM) of the IPTV provider or broadcast program provider (PP) in the apartment house where the broadcasting joint reception equipment (MATV) is built It is an object of the present invention to provide a traffic distribution method and system for solving the overload caused by the increase in the number of IPTV subscribers when transmitting a real time broadcast.

In addition, by using the broadcasting joint reception facility (MATV) of the apartment house, the broadcasting transmission path is dualized into the local broadcasting network and the Internet network (data network) of the IPTV subscriber, thereby reducing the load generated on the communication bandwidth of the broadcasting subscriber. It is an object of the present invention to provide a method and system for service commercialization.

In order to achieve the above object, a method for transmitting a real-time broadcast from the main head-end system of the IPTV service provider or broadcast program provider to the broadcast receiver terminal of the apartment house, (a) sharing the broadcast content from the main head-end system Transmitting to a broadcast relay transmission server installed in a home broadcasting system (MATV) through an internet network; (b) decoding the stream data received in real time by the broadcast relay transmission server and encoding the digital broadcast transmission standard profiles (MPEG-2, H.264) of the premises broadcasting network of the apartment house; (d) RF broadcasting by the broadcasting server for transmitting the encoded file to an available frequency channel for transmitting the encoded file to the individual broadcasting receiver terminal of the apartment house; And (e) transmitting the broadcast relay device installed in the individual broadcast receiver terminal through a coaxial cable of the premises broadcasting network through the RF frequency channel allocated by the broadcast relay transmission server. A program provider proposes a method of transmitting a real-time broadcast to a broadcast receiver terminal through an on-premises broadcasting network of an apartment house.

Also, in order to achieve the above object, a method of transmitting a real-time broadcast from the main headend system of an IPTV service provider or a broadcast program provider to a broadcast receiver terminal of a multi-family house, comprising: (a) the main head-end system in a multi-unit house; Encrypting (DRM: Digital Rights Management) the broadcast content to be transmitted to the broadcast relay transmission server installed in the broadcasting joint reception facility (MATV) through a digital encryption generation process; (b) transmitting the encrypted broadcast content from the main headend system to the broadcast relay server through an internet network; (c) decrypting and decoding the encryption (DRM) of the broadcast content stream data received by the broadcasting server for transmission, and then encoding the digital broadcast transmission standard profile (MPEG-2, H.264) of the premises broadcasting network of the apartment house. Making; (e) generating, by the broadcast relay transmission server, an encryption of the encoded stream data (CAS); (f) RF modulating, by the broadcast relay transmission server, on an available frequency channel to transmit the encrypted stream data to individual broadcast receiver terminals through the premises broadcasting network of the apartment house; (g) transmitting to a broadcast receiving apparatus installed in an individual broadcast receiver terminal by a coaxial cable of a local broadcasting network through an RF frequency channel allocated by the broadcasting relay transmitting server; And (h) receiving a broadcast signal transmitted through a coaxial cable by a broadcast receiving apparatus installed in the individual broadcast receiver terminal and decrypting the encryption by the broadcast receiving apparatus. The present invention proposes a method for transmitting real-time broadcasting to a broadcast receiver terminal through a premises broadcasting network of an apartment house.

In the step (h), when the broadcast receiver information embedded in the broadcast receiver is compared with the broadcast receiver information in the main head-end system, it is determined that the broadcast receiver is in a normal subscription state. Can be configured to receive.

In addition, in order to achieve the above object, in the system for transmitting the real-time broadcast to the broadcast receiver terminal of the IPTV service provider or broadcast program provider broadcast content, the broadcast content is encrypted through a digital encryption process (DRM) : Digital Rights Management) Registers transmission equipment and broadcasting subscriber information transmitted to MATV in multi-unit housing through internet network, and performs restriction of authentication by subscriber management and encryption (DRM, CAS). A main headend system comprising a server; An encoder that decrypts the encrypted broadcasting content encryption (DRM) and encodes the digital broadcasting transmission standard profile (MPEG-2, H.264) of the premises broadcasting network of the apartment house, and encrypts the broadcasting content while transmitting the broadcasting contents (CAS). And a modulator for generating a conditional access system and a modulator for calling the encoded stream data and modulating the available stream channel with an available frequency channel to transmit the encoded stream data to an individual broadcast receiver terminal of the apartment. Broadcasting broadcasting server installed in the joint reception equipment (MATV); And receiving the broadcasting signal transmitted through the coaxial cable of the local broadcasting network from the broadcasting server for receiving the broadcasting reception restriction authentication key value of the main headend system to receive the encryption (CAS). The present invention provides a system for transmitting a real-time broadcast to a broadcast receiver terminal through an on-premises broadcasting network of an IPTV provider or broadcast program provider including a broadcast receiving apparatus for decoding and decoding to receive broadcast content.

In addition, in a system for transmitting broadcast content from a main headend system of an IPTV service provider or a broadcast program provider to a broadcast receiving device of an individual broadcast receiver terminal of a multi-family house, the encryption of broadcast content encrypted in the main headend system is performed. An encoder for decoding (DRM) and encoding the digital broadcast transmission standard profiles (MPEG-2, H.264) of the premises broadcasting network of the apartment house; An encryption generator configured to generate an encryption of broadcast content (CAS) while transmitting the broadcast content to the broadcast receiving device through an on-premises broadcasting network of a multi-family house; And a modulator for RF-modulating the available stream channel to an available frequency channel for transmitting the encoded stream data to the broadcast receiving apparatus through an on-premises broadcasting network of a multi-family house. An IPTV provider or broadcast program provider characterized by a broadcast relay transmission server installed in the present invention provides a system for transmitting a real-time broadcast to the broadcast receiver terminal through the premises broadcasting network of the apartment house.

In addition, in a system for transmitting broadcast content from a main headend system of an IPTV service provider or a broadcast program provider to a broadcast receiving device of an individual broadcast receiver terminal in a multi-family house, the broadcast content is encrypted through a digital encryption process. Transmission equipment (DRM: Digital Rights Management) to transmit to the broadcasting joint reception equipment (MATV) in the apartment through the Internet network; And registering the broadcast subscriber information and performing reception restriction authentication when there is a reception request of the broadcast reception device for the broadcast signal transmitted by generating the encryption (CAS) through the coaxial cable of the subscriber management and the premises broadcasting network of the apartment house. An IPTV provider or broadcast program provider characterized in that the main head-end system configured to include a key server to transmit a real-time broadcast to the broadcast receiver terminal through the premises broadcasting network of the apartment house.

In addition, in the system that transmits the broadcast content from the main head-end system of the IPTV service provider or broadcast program provider to the broadcast receiving device of the individual broadcast receiver terminal of the apartment house, it transmits through a coaxial cable of the premises broadcasting network of the apartment house An IPTV operator or a broadcast program provider characterized by a broadcast receiving device which receives a broadcast content by receiving a broadcast signal and receiving a broadcast receiving authentication key value of a main headend system to decrypt and decode the encryption (CAS). We propose a system for transmitting real-time broadcasts to a broadcast receiver terminal through a residential broadcasting network.

The present invention can achieve the following effects through the method and system for the IPTV operator or broadcast program provider to transmit real-time broadcast to the broadcast receiver terminal through the premises broadcasting network of the apartment house.

First, in case of transmitting broadcasting by establishing authentication system such as DRM and CAS in broadcasting broadcasting server and setting available channel of broadcasting network in the broadcasting network, broadcasting network between broadcasting server and broadcasting receiving terminal is provided for the channel. Since the broadcast is transmitted through the broadcast network, the Internet network of the broadcast receiving subscriber is not loaded at all, thereby greatly increasing the efficiency of the Internet data network of the broadcast receiving subscriber.

Second, when the authentication system such as CAS and DRM is set in the broadcasting relay transmission server installed in the broadcasting joint reception equipment (MATV) of the apartment house, the IPTV equipped with the broadcasting receiver equipped with the function of decrypting the encrypted code is installed. The subscriber can receive the content transmitted only from the broadcast receiving device.

Third, if there are a large number of broadcasting relay transmission servers installed in the broadcasting common reception facility (MATV) for each apartment house, distributed servers installed in all apartment houses using satellite repeaters rather than internet data network for content transmission by broadcasting broadcasting server. The content can be delivered at once in a batch, thereby increasing the economic efficiency.

Fourth, the IPTV service provider does not participate in the program of the program provider (PP) as its service package but does not participate in the program. Thus, the broadcast service server and the CAS system installed in the apartment house are managed by the program provider. If the broadcaster uses an encrypted CAS system, the broadcast server will be able to share with each other as an open platform that can be used jointly by multiple IPTV operators.

Hereinafter, a method and system for transmitting a real-time broadcast to a broadcast receiver terminal through an on-premises broadcasting network of an IPTV provider or a broadcast program provider of the present invention will be described in detail with reference to the accompanying drawings.

The present invention provides a broadcast relay transmission system installed in a main end end system (Head End System) and a broadcast joint reception facility (MATV) in a multi-unit house in a method of transmitting a broadcast to a broadcast receiver in a multi-unit house. The present invention relates to a real-time broadcast transmission method and system characterized by a three-stage broadcast transmission method of a system (or a broadcast relay transmission server) and an individual broadcast receiving terminal in a multi-family house.

In general IPTV service, broadcast content of an IPTV provider (service provider) or a broadcast program provider provides broadcast content to an IPTV subscriber through an internet network in a main headend server of a main headend system (H / E). In the subscriber's Internet subscriber network, the maximum bandwidth is 100Mps and up to 1000Mbps when using optical cable.

However, in case of 5 channels of HD terrestrial digital broadcasting (KBS1, 2 MBC, SBS, EBS), which can be viewed free of charge as basic broadcasting, the bandwidth occupied by one channel is about 20Mbps. It is difficult to be provided efficiently.

Accordingly, the present invention is configured to solve the above problems of the IPTV service on the premise that the broadcasting joint reception facility (MATV) is already installed in the apartment house.

In the case of multi-unit houses such as shopping malls, apartments, and assembly buildings, a common antenna for receiving analog and digital broadcasting signals is installed, and a channel is allocated between signals received from the common antenna and broadcasted for level identification, signal amplification, etc. Joint reception facility (MATV) is installed and operated.

More specifically, the function of the broadcasting joint reception equipment (MATV) of a multi-unit house receives a broadcast signal transmitted from the outside using wired / wireless equipment (terrestrial antenna, satellite antenna or cable broadcasting), and then the channel between each signal by frequency After assigning (modulating) each signal level to be equalized, the cable of each channel is mixed and gathered into one cable, then the signal is amplified and transmitted to individual households. The transmitted signal is a tuner built in the TV receiver. Through reclassification by frequency, broadcasts are played through each channel.

The difference between broadcasting network using coaxial cable and data network (or internet network, network network) using communication cable of UTP or optical cable is as follows.

Coaxial cable is usually used for broadcasting because it separates the path through which content is transmitted based on the frequency of 6MHz into channels so that each channel can transmit one content regardless of high quality or low quality. Therefore, even if dozens of broadcasting channels are used by using a broadcasting cable, the bandwidth limitation problem occurring in a communication network such as a data network does not occur.

On the other hand, the data network has a maximum limit of 100 Mbps or 1000 Mbps, and 100 Mbps or 1000 Mbps means that the sum of the high quality data and the low quality data based on the content capacity may exceed the maximum bandwidth. If you send a lot of high-definition content because there is a number of problems can not send a large number of content due to the reduction of bandwidth. That is, high-definition content may be 20 Mbps as described above, and low-definition content may take 1 Mbps, and the number of available channels may vary according to the nature of broadcast content. The number of channels is inevitably limited.

2 to 3 are simplified block diagrams illustrating an embodiment according to the present invention. As shown in the drawing, the broadcasting co-receiving facility of a multi-family house for one broadcasting channel of a main headend system of an IPTV provider or a broadcasting program provider is shown. After the broadcasting server is installed in the (MATV), the broadcast contents are distributed from the main headend system to the broadcasting server, which is a distributed server for individual apartments, in real time.

In other words, in a multi-unit house, a broadcast server for transmitting broadcast broadcasts is separately installed as a distributed server for receiving broadcast content from a main headend system such as an IPTV provider in real time.

If the real-time broadcasting contents are distributed from the main headend system of the IPTV subscriber to the broadcasting server, the traffic bottleneck may occur in the broadcasting server because the plurality of subscribers are gathered in the final IPTV subscriber terminal of the apartment house. There is nothing else.

In order to solve this problem, in the case of MDUs, IPTV operators, etc. are distributed to the MTVs of MDUs as broadcasting servers for broadcast broadcasting by utilizing MTVs of MDUs. Real-time broadcast to the subscriber terminal is installed in the broadcasting receiver (TV or set-top box) which is the receiver terminal for the IPTV of the subscriber terminal by using the broadcasting line (coaxial cable) of the broadcasting joint reception facility (MATV) in the apartment house. It is configured to transmit a broadcast.

The above configuration has the effect of overcoming the limitation of the bandwidth of the Internet network, that is, the limitation of the maximum bandwidth of the IPTV subscriber network. The broadcast content received from the subscriber's TV is received from a main headend system such as an IPTV provider. Instead of being transmitted directly to the subscriber's receiving TV through the internet network, the broadcast content is transmitted to the broadcasting line through the broadcasting cable, that is, the coaxial cable for broadcasting, through the broadcasting joint reception facility (MATV) installed in the apartment house where the broadcasting server is installed. Since the data is sent out, the Internet network (data network) of the subscriber does not take any load, thereby reducing the communication bandwidth of the subscriber network and bringing the effect of greatly increasing the efficiency of the Internet network.

As shown in Figs. 2 to 3, in the broadcast joint reception equipment (MATV), the broadcast content received by the broadcast relay transmission server is allocated to a channel in an available frequency band of the local broadcasting network to provide a coaxial cable to a broadcast receiving subscriber. It is sent through.

Coaxial cable is a broadcasting cable that distributes channels by frequency, so it is possible to broadcast even if there are many channels, and it is possible to limit the bandwidth of IPTV subscriber network when broadcasting through communication cable of data network. It can be overcome.

In other words, the channel is assigned to the broadcast contents received through the broadcast relay server in the broadcasting joint reception facility (MATV), and the IPTV subscriber sends the broadcast through the coaxial cable, which is a broadcast cable. It will have the effect of not getting caught.

As a result, the IPTV subscribers of apartments are always streamed through the data network, without having to waste bandwidth unnecessarily, and by using the broadcasting line to send the broadcast to overcome the bandwidth limitation of the subscriber data network, Even if the number of terminals is increased in the end subscriber terminal of the apartment house, the broadcast is transmitted to the broadcasting network through the broadcasting coaxial cable, not the data network, so that no data traffic problem occurs in the data network. It is possible to solve the bandwidth limitation of the data network generated when transmitting broadcast content using the network.

Hereinafter, a method and a system for transmitting a real time broadcast from a main headend system of an IPTV provider or a broadcast program provider to a broadcast receiver terminal of a multi-family house will be described in more detail.

As shown in Fig. 2 to 3, the broadcast content received on the newly allocated premises broadcasting channel by the broadcast content transmission server installed in the broadcasting joint reception equipment (MATV) of the apartment house on the existing broadcast joint reception equipment After mixing with the channel of (MATV), it transmits through coaxial cable, and the broadcasting receiver subscriber station is equipped with broadcasting receiver equipment such as set-top box.

In main head-end systems such as IPTV operators, broadcasting contents are duplicated according to broadcasting content transmission schedule data, and the data packet is transmitted to the broadcasting relay transmission server installed in the broadcasting joint reception facility (MATV) in the apartment house through the Internet network or satellite network. To be transmitted in real time.

Preferably, in the above process, the broadcasting content is encrypted in the main headend system through a digital encryption generation process (DRM: Digital Rights Management) for broadcasting relay installed in the broadcasting joint reception facility (MATV) of the apartment house through the Internet network. Send to sending server.

In Korea, MPEG-2 is used for the file transmitted to the broadcasting network according to the ATSC American standard. Therefore, broadcast content that IPTV service providers generally use video codec such as MPEG-4 (H.264, Divx, etc.), so that broadcast content can be transmitted to subscribers of IPTV through the local broadcasting network. There is a problem of encoding with the standard profile MPEG-2 TS.

To this end, the broadcast relay transmission server installed in the broadcasting joint reception facility (MATV) of the multi-family house decodes and decodes the encryption (DRM) of the broadcast content transmitted from the main headend and then broadcasts the digital broadcasting transmission standard profile of the residential network of the multi-unit house. Encoder to encode to MPEG-2.

The broadcast server also includes a modulator for RF-modulating the stream data encoded in MPEG-2, which is a digital broadcast transmission standard file, into an available frequency channel of the MATL. .

In addition, the broadcast server for transmitting the broadcasting broadcasts the real-time broadcast content to the individual broadcast receiver terminal through the coaxial cable of the local broadcasting network through the assigned RF frequency channel, encrypting the broadcast content for authentication of the receiving rights of the broadcast content (CAS: Conditional access system), and for this purpose, an encryption generator is configured in the broadcast server.

In addition, the broadcasting subscriber receiving terminal of the multi-unit housing communicates with the IPTV main headend system to verify the receiving authority of the broadcast contents transmitted by being encrypted (CAS) from the broadcasting server for transmitting the broadcasting, and decrypts the system and the authentication authority for the receiving authority. A broadcast receiving device having a function of decoding an MPEG-2 TS stream file transmitted from a broadcast relay broadcasting server is configured.

As shown, the broadcast receiving device of the IPTV broadcast subscriber includes a broadcast receiving unit for receiving the broadcast directly from the broadcast server for broadcasting relay of the apartment.

In other words, the broadcast receiving apparatus such as a set-top box of the subscriber station is provided with a broadcast signal input unit for receiving a broadcast signal transmitted from a broadcast relay server.

Hereinafter, the authentication system of the present invention will be described in more detail.

In the present invention, the DRM (Digital Rights Management) system is established as a subscriber reception restriction system related to transmission encryption and decryption of contents transmitted through the Internet network, and the main headend system of the IPTV and the broadcasting co-reception of the apartment house The broadcasting server for broadcasting relay installed in the facility has an encryption function set as a DRM system that restricts the reception of broadcasting contents at the subscriber's terminal, and the receiver's broadcasting receiver is equipped with a DRM encryption decryption function so that only IPTV subscribers Is configured to allow reception.

In addition, the broadcast broadcasting server installed in the broadcasting co-receiving facility of the multi-unit house decodes the DRM code of the broadcast content received from the main headend system of the IPTV and transmits the broadcast to the subscribers in the multi-unit house while broadcasting the digital broadcasting on the premises. It encodes and modulates the available frequency into MPEG-2 TS, a transmission standard profile, and simultaneously constructs a CAS (Conditional Access System) system as a reception restriction system for broadcast receivers. CAS) is installed so that only IPTV subscribers can receive the channel.

In the present invention, the start point of the content transmission based on the broadcast receiving device of the IPTV subscriber is divided into a main headend system such as an IPTV service provider and a broadcasting joint reception facility (MATV) of a multi-family house, and thus the content transmission path of the receiver is changed. In particular, there is a need to control access restriction of broadcast contents in a broadcast receiving device, which is an IPTV subscriber station, in the main headend system of an IPTV provider.

In other words, as the broadcast content that should be in the IPTV main headend system is distributed to the broadcast relay server of the broadcasting joint reception equipment (MATV) of the apartment, the broadcasting joint reception equipment (MATV) of the apartment is transmitted through the broadcasting network. It is necessary to control the non-subscriber to receive broadcast content by distinguishing IPTV subscribers and non-subscribers by encrypting the broadcast content.

In more detail, the main head-end system encrypts the broadcast content to be transmitted to the broadcast relay transmission server installed in the broadcasting joint reception facility (MATV) in the apartment house through digital encryption generation process (DRM: Digital Rights Management). When sent to the communication network, the broadcast server transmitting server decrypts the encrypted DRM of the encoded broadcast content and encodes the digital broadcast transmission standard profiles (MPEG-2, H.264) of the premises broadcasting network of the apartment house.

At this time, the authentication for the broadcast content reception authority of the broadcast relay server is required. Therefore, the broadcast relay server receives the authentication key value for encryption and decryption from the key server built in the main headend system and decrypts the encryption. DRM system function is equipped.

That is, the main head-end system controls the transmission of broadcast content only to the broadcasting server for the broadcasting relay, by granting an authentication value.

Next, the broadcast relay server generates broadcast content encryption (CAS: Conditional Access System) while transmitting the broadcast content according to the broadcast content transmission schedule data to the individual broadcast receiver terminal through the coaxial cable of the broadcasting network. The broadcast receiver installed in the individual broadcast receiver terminal receives a broadcast signal transmitted through a coaxial cable and decrypts the encryption by the broadcast receiver.

In more detail, the CAS system is set up on a broadcasting server distributed in a broadcasting broadcasting system (MATV) of a multi-unit housing, even if the broadcasting is transmitted through an individual household coaxial cable in the multi-family housing. Recipients who are not installed can not view the contents, and the CAS decryption device function is installed in the set-top box, which is a subscriber terminal, so that only the IPTV receiving subscriber can receive the contents so that only authorized subscribers can receive the corresponding channel.

Similarly, when the broadcast content is transmitted through the broadcast network, the broadcast receiving device is equipped with a CAS system function for decrypting the encryption by receiving an authentication key value for encryption decryption from a key server constructed in the main headend system.

In other words, the main headend system compares the broadcast receiver information embedded in the main headend system with the broadcast receiver information embedded in the broadcast receiver, and if the broadcast receiver is confirmed to be in a normal subscription state, the encryption (CAS) is performed. Or a key server for releasing DRM and assigning an encryption key value and an authentication value to receive broadcast content.

The function of the IPTV broadcasting receiver with these two subscriber authentication methods is to have a function different from that of the general conventional IPTV set-top box, and the IPTV provider when using the broadcasting relay broadcasting server installed in the MTV Key-server control of two restrictive systems (CAS, DRM) for subscriber authentication is inevitable in main headend system. Having such a function is a technical feature to be implemented in the present invention, which will also be a configuration that is different from the prior art.

The system configured in the present invention can also be utilized in the following cases.

Broadcasting broadcasting server installed in broadcasting joint reception equipment (MATV) of multi-unit housing should be operated by broadcasting program provider (PP) while transmitting and scheduling broadcasting contents. DRM and CAS management should be performed simultaneously by registering and managing broadcast receiver information in main headend system and broadcast receiver in order to decide whether to grant permission.

Therefore, the broadcasting server for broadcasting relay of a multi-unit housing broadcast receiving apparatus having the same encryption decryption function when the broadcast program provider (PP) transmits the broadcast through the local broadcasting network through the encoding generation process (CAS) while encoding and modulating. IPTV operators using (set-top box) can share the broadcast server installed in the multi-family housing, so the system will function as an open platform.

By doing so, the broadcasting server broadcasting server of the apartment can play an important role in transmitting high quality broadcasting by acting as an open platform jointly used by IPTV operators.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

1 is a block diagram showing a conventional IPTV facility of a general apartment house.

2 to 3 is a schematic diagram showing an embodiment according to the present invention.

Claims (7)

In the system for broadcasting the broadcast content of the IPTV service provider or broadcast program provider to the broadcast receiver terminal of the apartment house in real time, Encrypt the broadcasting contents through digital encryption generation process (DRM: Digital Rights Management) to register the transmitting equipment and broadcasting subscriber information transmitted to the broadcasting joint reception equipment (MATV) in the apartment through the internet network to manage and encrypt the subscriber. A main headend system including a key-server performing reception restriction authentication (DRM, CAS); An encoder that decrypts the encrypted broadcasting content encryption (DRM) and encodes the digital broadcasting transmission standard profile (MPEG-2, H.264) of the premises broadcasting network of the apartment house, and encrypts the broadcasting content while transmitting the broadcasting contents (CAS). And a modulator for generating a conditional access system and a modulator for calling the encoded stream data and modulating the available stream channel with an available frequency channel to transmit the encoded stream data to an individual broadcast receiver terminal of the apartment. Broadcasting broadcasting server installed in the joint reception equipment (MATV); And It is configured in individual broadcasting receiver terminal of apartment and receives broadcasting signal transmitted through coaxial cable of local broadcasting network from broadcasting transmission server for receiving broadcasting reception restriction key value of main headend system to decrypt encryption (CAS). And a broadcast receiving device configured to receive broadcast content by decoding the broadcast content. The system includes an IPTV provider or a broadcast program provider configured to transmit a real-time broadcast to a broadcast receiver terminal through a premises broadcasting network of a multi-family house. delete delete delete delete delete delete

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