KR20110070220A - Setting system and method for restricting viewing of broadcasting program by using entitlement management masage - Google Patents

Abstract

PURPOSE: A watching restriction setup system and method using EMM are provided to set whether the watching of a user is restricted by contents. CONSTITUTION: A watching authority information provider(2410) provides watching authority information to a watching restriction setup terminal. A watching restriction setup information receiver(2420) receives watching restriction setup information from the watching restriction setup terminal. An EMM(Entitlement Management Message) generator inserts the received watching restriction setup information. The EMM generator creates EMM to be offered to a contents reproducing terminal.

Description

System and method for setting parental control using EMM {SETTING SYSTEM AND METHOD FOR RESTRICTING VIEWING OF BROADCASTING PROGRAM BY USING ENTITLEMENT MANAGEMENT MASAGE}

The present invention relates to a parental control setting system and method using an EMM, and more particularly, to set a parental control of broadcast content in a user terminal, and to generate a part of an EMM including the parental control setting information. The present invention relates to a system and a method for setting parental control.

With the spread of the Internet and the development of digital broadcasting technology, the use of two-way broadcasting services provided by high-speed Internet networks is increasing.

Two-way broadcasting service is a service that provides information service, video contents, and broadcasting to two-way broadcasting receivers (eg, IPTV, DMB receivers, set-top boxes, etc.) using high-speed Internet. Various contents and additional services provided by the Internet such as home banking, online games, and MP3 can be provided.

IPTV service is a representative type of such a bidirectional broadcast service.

IPTV may provide a real-time broadcasting service provided by a content producer and a video on demand (VOD) service that provides desired content at a desired time by a viewer.

IPTV is similar in concept to broadcast in that it retransmits cable, satellite, and terrestrial broadcasts in real time, but it is easier to receive feedback from broadcast subscribers than cable or satellite broadcasts. In addition, such IPTV mainly adopts a conditional access system (CAS), which is a security solution, to selectively provide content to subscribers.

This CAS solution is a technology that allows access to broadcast content only to users who have the authority to view it. The CAS solution encrypts the broadcast signal and provides a decryption key that can solve the encrypted broadcast signal only to a receiving device of a person who has subscribed to a paid service. Entitlement is received by transmitting. A set top box (STB) that has received an entitlement can decrypt the encrypted broadcast content using a decryption key and a viewing right included in the receive entitlement to watch the subscribed broadcast programs.

On the other hand, since various contents are provided in IPTV broadcasting, the user tends to restrict the viewing of the contents on his own. In particular, in Korea, where the enthusiasm for education is high, there is a high tendency to discontinue the use of broadcasting services used for the education of children. The reason for such interruption is that children who return home earlier than their parents are afraid that their parents will spend less time studying and watching TV without control. In order to make the IPTV broadcasting using the interactive Internet more popular than the existing cable broadcasting or satellite broadcasting, the broadcasting program licensed to the subscriber by the broadcasting company is expanded by restricting the subscriber channel restriction right of the current broadcasting program company. Within the viewing authority, subscribers should be free to restrict their viewing. As a result, when CAS is able to restrict viewers' rights to watch their channels, it is possible for them to effectively watch their favorite, popular pay-TV broadcasts via IPTV, under the control of their parents. All children will be satisfied.

However, since CAS was mainly used to protect broadcast programs focused on broadcast service providers that transmit broadcasting rights to subscribers through the broadcast service provider, the user can receive limited parental control services by reflecting user's frequent parental control settings. In the case of the provision, there is a problem that the user's right to view the channel cannot be effectively limited due to the lack of bandwidth for receiving a response signal from the broadcast program subscriber and the absence of a response processing server for processing the response signal.

On the other hand, as the first prior art, the Republic of Korea Patent Publication No. 10-2008-0050258 discloses an invention named "personal viewing restriction method and apparatus" bar, to identify the user in the house watching through RFID technology, The present invention relates to a technology for limiting viewing on an individual basis based on viewing authority information on a confirmed user.

However, the above-described first prior art has a problem that it is difficult for users to freely change the parental level setting by using the EMM since the CAS system generates reception authority information for every user in the system. In addition, there is a problem that it is difficult to reflect the change of the parental control setting in real time, because the load restriction system takes a lot of load to generate the receiving authority information for the user.

Accordingly, there is an urgent need for a content viewing restriction setting system and method for limiting viewing of contents through an EMM, reflecting frequent viewing restriction settings of a user, and minimizing the load of a reception restriction system.

Some embodiments of the present invention provide a system and method for setting parental control, in which a user directly sets a parental control for each content, and generates some messages of the EMM in advance and provides them to a server based on the parental control.

In addition, an embodiment of the present invention provides a parental level setting system and method that can effectively set a parental level for content that can be viewed using parental level information received from a server.

As a technical means for achieving the above-described technical problem, the first aspect of the present invention, the viewing authority information providing unit for providing viewing authority information on the playable content to the user terminal, the user based on the provided viewing authority information EMM for generating the EMM to be provided to the user terminal by inserting the parental level setting information receiving unit and the received parental level setting information to receive the parental level setting information related to the parental level of the content generated in the terminal from the user terminal; The generation EMM may include a generation unit, and may provide a parental control setting system using an Entitlement Management Message (EMM), which is used to restrict playback of the content in the user terminal.

In addition, the second aspect of the present invention, the viewing authority information receiving unit for receiving viewing authority information on the content that can be viewed from the broadcast server, based on the received viewing authority information, the content to be viewed from the viewable content A parental control setting information generation unit for generating parental control setting information regarding the parental control setting information, and providing the generated parental control setting information to the broadcast server; receiving an EMM including the parental control setting information from the broadcast server; And a content decoder which decodes the content received from the broadcast server by using an EMM, wherein the EMM comprises a user terminal for setting a parental control of content generated by inserting the parental level setting information in the broadcast server. Can be provided.

In addition, the third aspect of the present invention, providing the viewing authority information about the content that can be played in the user terminal to the user terminal, the user terminal is generated to limit the viewing of the content based on the provided viewing authority information Receiving the parental level setting information from the user terminal, generating an EMM for the user terminal using the received parental level setting information, and providing the generated EMM to the user terminal. The generated EMM may provide a method for setting parental control using an Entitlement Management Message (EMM), which is used to restrict playback of the content in the user terminal.

According to the above-described problem solving means of the present invention, it is possible to set whether to limit the viewing of the user for each content by using the EMM while minimizing the amount of calculation of the reception restriction system.

In addition, according to the above-described problem solving means of the present invention, by using the viewing authority information for the user, it is possible to efficiently set whether or not to limit the viewing of the user to the content.

In addition, according to one of the other problem solving means of the present invention, it is possible to effectively set the user viewing restriction by using various user terminals.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

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

1 is an overall configuration diagram of a user viewing restriction setting system according to an embodiment of the present invention.

As shown in FIG. 1, the user viewing restriction setting system according to an embodiment of the present invention includes a broadcaster 1000, an IPTV broadcasting system 2000, a network 3000, and a user terminal 4000. The user terminal 4000 includes an STB 4100, a PC 4200, a mobile communication terminal 4300, and the like.

In an embodiment of the present invention, the content includes VOD content or content included in a specific channel, and may mean a channel itself (all content included in a specific channel).

The broadcaster 1000 serves to produce, edit, and change broadcast content and provide the broadcast content to the IPTV broadcast system 2000. The broadcaster 1000 may include a program provider (PP), a terrestrial wave, or a content provider (CP). In addition, the broadcast content provided by the broadcaster 1000 may include existing broadcast content and various contents on the Internet.

The IPTV broadcasting system 2000 receives the parental level setting information set in the user terminal 4000, generates an EMM based on the received parental level setting information, and provides the generated EMM to the user terminal 4000. The EMM including the parental level setting information set by the user may be used to determine whether to decode the content in the user terminal 4000.

In addition, the IPTV broadcasting system 2000 may provide viewing authority information to the user terminal 4000 based on the subscriber information of the user terminal 4000, and may set content viewing restriction setting information set from the user terminal 4000. Receive and use it to generate an EMM.

The viewing authority information is information generated based on the type of service subscribed to by the user terminal 4000, the type of content or channel purchased by the user terminal 4000, and the like. Content information, including content included in a specific channel, or the channel itself).

In addition, the parental level setting information is information set in the user terminal 4000 and refers to information set whether or not to restrict viewing of content (including VOD content, content included in a specific channel, or the channel itself). .

In addition, the IPTV broadcasting system 2000 receives and manages broadcast content from the broadcaster 1000 and distributes the content to the user terminal 4000 to provide a broadcast / recording / playback service. The received broadcast content may include related additional information and an EPG (Electronic Program Guide) for the additional information.

The IPTV broadcasting system 2000 includes EPG information (PSIP / PSI) including a broadcasting video and audio signal, data broadcasting data, and a program recommendation service menu through a subscriber aggregation device and a subscriber switch via a router supporting a multicast routing protocol. / SI information) can be transmitted to the user terminal 4000 of multiple subscribers by multicasting.

The network 3000 receives the broadcast content from the IPTV broadcasting system 2000, delivers the received broadcast content to the user terminal 4000, and each component according to an embodiment of the present invention sets parental control of the content. Allows for smooth transmission and reception of information for The network 3000 includes a backbone network and an access network, and the access network includes Ethernet, xDSL (ADSL, VDSL), hybrid fiber coaxial cable (HFC), and fiber to the FTTC (Fiber To The). Curb), and may be configured in any one topology of a fiber to the home (FTTH) structure.

The user terminal 4000 provides user information to the IPTV broadcasting system 2000 and receives and stores contents from the IPTV broadcasting system 2000. The user terminal 4000 is a device for using a broadcast service, and any one of a TV with a built-in IP STB, an IP set-top box (IP STB) connected to a user's TV, a computer, a laptop, a mobile communication terminal, or a personal portable terminal. The terminal can be used.

The user terminal 4000 receives viewing authority information from the IPTV broadcasting system 2000, and sets whether to restrict viewing of content based on the viewing authority information. In addition, the user terminal 4000 may generate the parental level setting information as some data of the EMM message, and provide the generated parental level setting information to the IPTV broadcasting system 2000. Furthermore, the parental level setting information may be effectively generated and provided through various user terminals 4000 such as the STB 4100, the PC 4200, and the mobile communication terminal 4300.

In addition, the user terminal 4000 may perform the parental level setting and content playback in one terminal, but is not limited thereto. The user terminal 4000 may be divided into a parental level setting terminal that sets a parental level and a content playing terminal that receives and plays content. Can be.

Hereinafter, a detailed configuration of an IPTV broadcasting system 2000 according to an embodiment of the present invention will be described with reference to FIG. 2.

2 is a detailed block diagram of an IPTV broadcasting system 2000 according to an embodiment of the present invention.

As shown in FIG. 2, the IPTV broadcasting system 2000 according to an embodiment of the present invention includes a scrambling unit 2100, a reception limiting system 2200, a broadcasting and subscriber management system 2300, and a parental level setting information management unit. 2400 and the transceiver 2500. The reception restriction system 2200 may include a control word (CW) generation unit 2210, an entitlement control message (ECM) generation unit 2220, and an entitlement management message (EMM) generation unit 2230.

The scrambling unit 2100 scrambles the content received from the broadcaster or the content provider. The scrambling unit 2100 may encrypt content received by a predetermined scrambling algorithm such as an advanced encryption standard (AES) or a common scrambling algorithm (CSA).

The reception restriction system 2200 manages various keys necessary for encryption of a real-time channel or pre-encryption of VOD content and controls viewing authority so that only the authenticated user can use the channel and contents. In order to prevent illegal copying of IPTV content, a digital rights management (DRM) scheme may be used instead of the reception restriction system 2200.

Such a reception restriction system 2200 is a system that allows only paid subscribers to watch a paid broadcast, and is a core for pay broadcasting companies such as satellite broadcasting and cable broadcasting and terrestrial broadcasting companies that are currently set free but are likely to be paid. Solution.

The CW generator 2210 generates a control word (CW). The CW is used as a key for encrypting and decrypting broadcast data, and the CW generator 2210 may provide the generated CW to the ECM generator 2220 and the scrambling unit 2100.

The ECM generator 2220 generates an Entitlement Control Message (ECM).

The ECM is an entitlement control message used for content protection, and the ECM generator 2220 may generate an ECM by receiving program information and the like from the broadcast and subscriber management system 2300, which will be described later.

The EMM generator 2230 generates an Entitlement Management Message (EMM).

The EMM is a qualification management message used for subscriber authentication, and the EMM generator 2230 may generate an EMM by receiving subscriber information, purchase information, and the like from the subscriber management system. The EMM generator 2230 may generate an EMM based on the parental control setting information received from the parental control setting information manager 2400 to be described later.

In addition, the EMM generator 2230 may receive the parental level setting information generated as part of the EMM data. In this case, the received parental level setting information may be used as a part of the EMM without additional processing. 2230 may generate an EMM reflecting the parental level setting information set for each user with a minimum amount of computation.

A detailed configuration of the EMM generated by the EMM generator 2230 will be described later.

In addition, the generated ECM and EMM is transmitted to the multiplexer, and the video / audio and the like are multiplexed with the compressed stream and are sent to the user terminal 4000. The user terminal 4000 authenticates the messages such as the ECM and the EMM. Receiver CA software that performs filtering and mutual authentication between the smart card and receiver can decompress / multiplex and encrypt multiplexed video, audio, and data, and pay for such as PPV, NVOD, IPPV, and paid packages. The service may be restricted depending on the credit card status of the smart card.

The broadcast and subscriber management system 2300 manages transmission scheduling for channels of broadcast programs, and manages subscriber information such as channel viewing authority. The broadcast and subscriber management system 2300 may provide broadcast information and subscriber information to the ECM generator 2220 and the EMM generator 2230 to be used for generation of the ECM and the EMM.

The parental level setting information managing unit 2400 provides the viewing rights information on the content or channel that the user terminal 4000 can watch to the user terminal 4000, and sets them in the user terminal 4000 based on the provided viewing rights information. Information regarding the viewing restriction to be received is received from the user terminal 4000.

In addition, the parental level setting information management unit 2400 may edit the parental level setting information received from the user terminal 4000, and provide the edited parental level setting information to the EMM generator 2230.

The parental level setting information management unit 2400 may receive parental level setting information from the STB 4100, the PC 4200, or the mobile communication terminal 4300, respectively, and edit the received information to be included in one EMM. I can process it with the information that there is.

The transmitter / receiver 2500 transmits / receives various information necessary for setting the parental level for the content with the user terminal 4000.

Hereinafter, a detailed configuration of the parental level setting information management unit 2400 according to an embodiment of the present invention will be described with reference to FIG. 3.

3 is a detailed block diagram of the parental level setting information management unit 2400 according to an embodiment of the present invention.

As shown in FIG. 3, the parental control setting information managing unit 2400 according to an exemplary embodiment of the present invention may include a parental control information providing unit 2410, a parental control setting information receiving unit 2420, and a parental control setting information editing unit 2430. ).

The viewing authority information provider 2410 provides the viewing authority information on the content that the user terminal 4000 can watch to the user terminal 4000.

The viewing authority information providing unit 2410 may authorize the contents that can be viewed on the user terminal 4000 based on the type of service subscribed to by the user terminal 4000, the type of content or channel purchased by the user terminal 4000, and the like. Information can be generated.

In addition, the viewing authority information providing unit 2410 may provide a separate editing user interface (UI) to the user terminal 4000 so that the user can set whether to restrict viewing.

The parental level setting information receiving unit 2420 receives the parental level setting information generated from the user terminal 4000.

The user terminal 4000 may generate the parental control setting information as some data of the EMM based on the parental control setting for the content input through a separate UI, and the parental control setting information receiving unit 2420 sets the parental control setting. Information may be received and the received parental level setting information may be provided to the parental level setting information editing unit 2430.

In addition, the parental level setting information receiving unit 2420 may receive parental level setting information from the STB 4100, the PC 4200, and the mobile communication terminal 4300, respectively.

The parental level setting information editing unit 2430 edits the received parental level setting information.

The parental level setting information editing unit 2430 may edit the parental level setting information received from various user terminals 4000 and process the single parental level setting information. For example, the parental level setting information editing unit 2430 may combine the parental level setting information for each content received from the mobile communication terminal 4300 into a single parental level setting information. In addition, the parental level setting information editing unit 2430 may generate the parental level setting information as some data of the EMM.

The generated parental control setting information may be provided to the EMM generating unit 2230 to be used for generating the EMM. In this case, since the EMM generating unit 2230 may utilize the parental control setting information as it is, The amount of computation consumed can be minimized.

Hereinafter, a detailed configuration of the user terminal 4000 according to an exemplary embodiment of the present invention will be described with reference to FIG. 4.

4 is a detailed configuration diagram of the user terminal 4000 according to an embodiment of the present invention.

As illustrated in FIG. 4, the user terminal 4000 according to an exemplary embodiment of the present invention may include a viewing authority information receiving unit 4100, a viewing restriction setting input receiving unit 4200, a viewing restriction setting information generating unit 4300, and content. The decoder 4400 and the transceiver 4500 are included.

The viewing authority information receiver 4100 receives viewing authority information about content from the IPTV broadcasting system 2000.

The viewing authority information is information generated based on the type of service subscribed to by the user terminal 4000, the type of content or channel purchased by the user terminal 4000, and the like. Content information, including content included in a specific channel, or the channel itself).

The parental level setting input receiver 4200 receives a setting value relating to parental level. The user terminal 4000 may use a UI provided separately to input a setting value for viewing restriction for each content.

The parental level setting information generating unit 4300 generates the parental level setting information based on a setting value for parental level of the content. The parental level setting information generating unit 4300 may generate the parental level setting information in different formats according to the type and performance of the user terminal 4000. For example, the STB 4100 may generate a single parental control setting information for which all parental content is set, and the mobile communication terminal 4300 sets a plurality of parental control settings for each content. The parental level setting information may be generated.

In addition, the parental level setting information generating unit 4300 may generate the parental level setting information as some data of the EMM based on the setting information on whether to limit the parental level of the content input through a separate UI. Since the parental level setting information generated in some data formats of the EMM can be used as it is for generating the EMM, the amount of computation consumed in generating the EMM can be minimized in the EMM generator 2220.

In addition, the parental level setting information generation unit 4300 may provide the generated parental level setting information to the IPTV broadcasting system 2000.

The parental level setting information generated by the parental level setting information generating unit 4300 as some data of the EMM will be described later.

The content decoder 4400 receives the EMM from the IPTV broadcasting system 2000 and decodes the viewable content by using the received EMM.

The content decryption unit 4400 extracts the entitlement and ECM decryption key from the EMM by analyzing the EMM and the ECM, and extracts the control word (CW) included in the ECM message using the ECM decryption key extracted from the EMM. Can be. In addition, the content decryption unit 4400 stores the entitlement extracted from the EMM in the internal memory of the smart card, and in the ECM capable of decrypting the encrypted content selected by the subscriber with reference to the rights of the content written in the recipient. It is possible to decide whether to transfer the extracted control word to the descrambler.

The transmitter / receiver 4500 transmits / receives various types of information necessary for setting a parental level for content with the IPTV broadcasting system 2000.

Hereinafter, a detailed configuration of an EMM including parental control setting information according to an embodiment of the present invention will be described with reference to FIGS. 5 to 7. 5 to 7 illustrate the detailed configuration of the EMM when the reception restriction is set for each channel in the real-time IPTV broadcasting service.

5 is a detailed configuration diagram of an EMM including parental control setting information according to an embodiment of the present invention.

As shown in FIG. 5, an EMM 5000 including parental control setting information according to an embodiment of the present invention may include an EMM type information field 5100, an EMM length information field 5200, and a subscriber identifier information field 5300. ), The parental level setting information field 5400, and the EMM signature value information field 5500. The EMM is generated by the EMM generator 2230, and the EMM generator 2230 may receive parental control setting information, which is a part of the EMM, from the user terminal 4000 and may be used as it is to generate the EMM.

The EMM type information field 5100 includes information about the type of the EMM. For example, the EMM type information field 5100 may be divided into an EMM that records subscriber channel subscription information and an EMM that sets a parental level for the subscriber self-subscribed channel. .

The EMM length information field 5200 may indicate the actual length of the EMM according to the EMM type in units of bytes.

The subscriber identifier information field 5300 specifies the unique number of the IPTV STB to which the EMM is delivered.

The parental level setting information field 5400 includes parental level setting information set by a user, and values necessary for executing the parental control of the subscriber's channel in the smart card of the user terminal 4000 are recorded. The parental level setting information may be generated and provided by the user terminal 4000, and a detailed configuration of the parental level setting information will be described later.

The EMM signature value information field 5500 may be used for the purpose of verifying the integrity of the remaining data of the EMM and whether the EMM is issued from a legitimate IPTV headend.

Hereinafter, the parental level setting information generated by the STB 4100 according to an embodiment of the present invention will be described with reference to FIG. 6.

6 is a diagram illustrating an example of parental level setting information generated in the STB 4100 according to an embodiment of the present invention.

As shown in FIG. 6, the STB 4100 according to an embodiment of the present invention may generate parental control setting information that sets parental control for a plurality of channels, and the parental control setting information generated is an EMM. The generation unit 2220 may be used as it is to generate the EMM.

As shown in FIG. 6, the parental control setting information 5400 generated by the IPTV STB user's configuration according to an embodiment of the present invention includes a subscription channel viewing restriction range 5410 and all subscription channel viewing restriction codes 5420. ), The channel viewing restriction detail code map 5430, the viewing restriction application period type 5440, the viewing restriction start time 5450, and the viewing restriction end time 5460.

The subscription channel viewing limit range 5410 may consist of one bit, and a value of 1 is recorded when restricting viewing rights for all channels, and a value of 0 when restricting viewing for only some selected channels. Can be recorded.

Each subscription channel parental control code 5520 may be configured with one bit, and is used when the value of the subscription channel parental control range 2810 is set to 1, that is, when the parental control is restricted to all channels. A value of 1 may indicate viewing, and a value of 0 may indicate that viewing cannot be performed.

The channel viewing restriction detailed code map 5430 may be configured with all 1024 bits. A value of 0 may indicate that viewing is restricted, and a value of 1 may represent that viewing is possible. The first bit may indicate a parental level setting value of channel number 1 (5432), the second bit may indicate a parental level setting value of channel number 2, and the 999th value may indicate channel number 999.

In addition, the channel viewing restriction detail code map 5430 may not display viewing restriction for all channels, and may display viewing restriction only for a channel to which a user terminal has viewing authority.

Parental control age type (5440) refers to the type of time period over which you want to apply parental controls, for example, weekdays (Monday through Friday), weekends (Sat / Day), daily, and a certain number of parental controls. Can be recorded.

The parental control start time 5450 indicates a time when the channel parental control starts, in a 24-hour clock, and can be specified up to the minute unit.

The parental level end time 5460 indicates a time when the channel parental level ends is 24 hours and can be specified up to the minute unit.

Hereinafter, the parental level setting information generated in the mobile communication terminal 4300 will be described with reference to FIG. 7.

7 is a diagram illustrating an example of parental level setting information generated in the mobile communication terminal 4300 according to an embodiment of the present invention.

As shown in FIG. 7, the parental control setting information 5400 generated by the mobile communication terminal 4300 according to an embodiment of the present invention may be generated for each channel, and the subscription channel viewing restriction range 5401, All subscription channel parental control codes 5002, parental control channel number 5003, channel parental control codes 5004, parental control age type 5005, parental control start time 5006 and parental control end time 5007 It includes.

The subscription channel viewing restriction range 5401 may be composed of one bit, and has a value of 1 when restricting viewing rights for all channels, and a value of 0 when restricting viewing rights for some channels. have.

All subscription channel parental control codes 5402 may be composed of one bit and may be used when the value of the subscribed channel parental control range 5401 is set to 1, that is, when the channel is restricted to all channels. A value of 1 may indicate viewing and a value of 0 may indicate that viewing is impossible.

The viewing restriction channel number 5403 indicates a channel number to which viewing is to be restricted and may have a number from 1 to 999. Since a lot of information cannot be transmitted due to the characteristics of a mobile phone, it can be used to select and control only a specific channel.

The channel parental control code 5404 indicates the viewing authority of the parental control channel number. The channel parental control code 5404 is composed of one bit, and a value of 0 indicates no viewing, and a value of 1 indicates viewing.

Parental control age type 5405 refers to the type of time period for which you want to apply parental control settings, such as weekdays (Monday through Friday), weekends (Sat / Day), daily, and certain number of parental controls. have.

The parental level start time 5406 represents a time at which the channel parental level begins, in 24-hour clock, and can be specified up to the minute unit.

The parental level end time 5407 indicates a time at which the channel parental level ends, in a 24-hour clock, and can be specified up to the minute unit.

Hereinafter, a user viewing authority setting method according to an embodiment of the present invention will be described with reference to FIG. 8.

8 is an information flowchart of a user viewing authority setting method according to an embodiment of the present invention.

In steps S800 and S802, the IPTV broadcasting system 2000 provides viewing authority information to the STB 4100 and the mobile communication terminal 4300.

The IPTV broadcasting system 2000 may generate authority information on content that can be viewed for each subscriber based on the type of service subscribed to by the user terminal 4000, the type of content or channel purchased by the user terminal 4000, and the like. have. For example, the viewing authority information for the user A may be provided to the STB and the mobile communication terminal used by the user A subscribed to the IPTV broadcasting service.

In addition, the IPTV broadcasting system 2000 may provide a separate editing UI (User Interface) to the user terminal 4000 so that the user can set whether to restrict viewing.

Steps S804 and S806 are steps of generating parental level setting information in the STB 4100 and the mobile communication terminal 4300.

The STB 4100 may generate parental control setting information including whether to restrict parental control of a plurality of content that can be viewed, and the mobile communication terminal 4300 may generate parental control setting information for each content that can be viewed. Can be.

In addition, the STB 4100 and the mobile communication terminal 4300 may generate the parental level setting information as a partial data value of the EMM. In this case, the IPTV broadcasting system 2000 generates the EMM by reflecting the parental level setting information. This saves the resources needed to do this.

Steps S808, S810, and S812 are steps of providing the parental level setting information to the IPTV broadcasting system 2000. The STB 4100 and the mobile communication terminal 4300 may provide the IPTV broadcasting system 2000 with parental control setting information (s) generated by the STB 4100 and the mobile communication terminal 4300, respectively.

Step S814 is a step of editing the parental level setting information received by the IPTV broadcasting system 2000.

The IPTV broadcasting system 2000 may edit parental control setting information received from various user terminals 4000 and process the parental control setting information into one parental control setting information. For example, the IPTV broadcasting system 2000 may combine the parental control setting information for each content received from the mobile communication terminal 4300 into a single parental control setting information. In addition, the IPTV broadcasting system 2000 may generate the parental level setting information as some data of the EMM.

Step S816 is a step of generating an EMM by reflecting the parental level setting information.

In operation S816, the EMM may be generated using the generated parental level setting information. In this case, since the parental level setting information generated in the data format of the EMM can be used as it is for the generation of the EMM, it is possible to minimize the amount of computation consumed to generate the EMM.

In operation S818, the generated EMM is provided to the STB 4100. In operation S820, the STB 4100 decrypts content by using the EMM.

In operation S820, the EMM and the ECM may be analyzed to extract an entitlement and an ECM decryption key from the EMM, and the control word CW included in the ECM message may be extracted using the ECM decryption key extracted from the EMM. In addition, the control word extracted from the ECM that stores the entitlement extracted from the EMM in the internal memory of the smart card and decodes the encrypted content selected by the subscriber by referring to the rights of the content written in the receiving entitlement is descrambled. You can decide whether or not to forward. Therefore, according to the parental level setting information set by the user, whether to reproduce the content may be determined in the user terminal 4000.

One embodiment of the present invention can also be implemented in the form of a recording medium containing instructions executable by a computer, such as a program module executed by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is an overall configuration diagram of a user viewing restriction setting system according to an embodiment of the present invention.

2 is a detailed block diagram of an IPTV broadcasting system 2000 according to an embodiment of the present invention.

3 is a detailed block diagram of the parental level setting information management unit 2400 according to an embodiment of the present invention.

4 is a detailed configuration diagram of a user terminal 4000 according to an embodiment of the present invention.

5 is a detailed configuration diagram of an EMM including parental control setting information according to an embodiment of the present invention.

6 is a diagram showing an example of parental level setting information generated in the STB 4100 according to an embodiment of the present invention.

7 is a diagram showing an example of parental level setting information generated in a mobile communication terminal 4300 according to an embodiment of the present invention.

8 is an information flow diagram of a user viewing authority setting method according to an embodiment of the present invention.

Claims (12)

In the parental control setting system using EMM (Entitlement Management Message), Viewing rights information providing unit for providing the viewing rights information on the playable content to the parental control setting terminal, A parental level setting information receiving unit for receiving, from the parental level setting terminal, parental level setting information related to the parental level of the content generated in the parental level setting terminal based on the provided parental level information; An EMM generator that inserts the received parental level setting information to generate an EMM to be provided to a content playback terminal; Including; And the generated EMM is used to limit the playback of the content in the user terminal. The method of claim 1, And the parental level setting terminal and the content reproducing terminal are included in one terminal device. The method of claim 1, And the parental level setting information is generated as part of the EMM data in the parental level setting terminal. The method of claim 1, Further comprising a parental level setting information editing unit for combining the parental level setting information received from the parental level setting terminal, And the EMM generating unit uses the combined parental level setting information to generate the EMM. The method of claim 4, wherein The parental level setting information is generated by setting the parental level for each content in the parental level setting terminal, And the parental level editing unit combines parental level setting information generated for each content. A user terminal for setting a parental control of content, A viewing authority information receiver configured to receive viewing authority information on content that can be viewed from a broadcasting server; Based on the received viewing authority information, generating viewing restriction setting information regarding content to be restricted from viewing among the viewable contents, and generating viewing restriction setting information for providing the generated viewing restriction setting information to the broadcast server. part, A content decoder which receives an EMM including the parental level setting information from the broadcast server and decodes the content received from the broadcast server by using the received EMM. Including; The EMM is generated by inserting the parental level setting information in the broadcast server. The method of claim 6, And the parental level setting information generation unit generates the parental level setting information as part of the EMM data. The method of claim 6, The parental level setting information generation unit sets whether to restrict the viewing for each of the viewable content. The generated parental control setting information is combined with the broadcasting server and used to generate the EMM. In the parental control setting method using an Entitlement Management Message (EMM), Providing viewing authority information regarding content playable in a user terminal to the user terminal, Receiving, from the user terminal, viewing restriction setting information generated to limit viewing of the content based on the provided viewing right information at the user terminal; Generating an EMM for the user terminal by using the received parental level setting information; and Providing the generated EMM to the user terminal Including; And the generated EMM is used to limit the playback of the content in the user terminal. The method of claim 9, The parental level setting information is generated as part of the EMM, The generating of the EMM may include using the parental level setting information as it is for generating the EMM. The method of claim 9, Combining the plurality of parental level setting information received from the user terminal; The generating of the EMM may include using the combined parental level setting information to generate the EMM. The method of claim 11, The parental level setting information is generated for each content in the user terminal. And combining the parental level setting information by combining a plurality of parental level setting information generated for each content so that the combined parental level setting information is used to generate the EMM.

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