KR20090012581A - Method and system for storage and playback of broadcasting contents, rights issuer applied to the same - Google Patents

Abstract

A method and a system for storing/playing broadcasting contents, and an authority issuing device applied to the same are provided to strengthen competitive power to other services related to providing the broadcasting contents and create an additional profit model by enabling a terminal to download/store the broadcasting contents and play the broadcasting contents based on playback authority assigned to the broadcasting contents. A download reservation setting unit(160) sets and transfers reservation schedule information of each member to a broadcasting view terminal. A broadcasting orchestration manager(120) manages broadcasting orchestration information. A DRM(Digital Rights Management) packager(110) packs the broadcasting contents with DRM. A CAS(Conditional Access System) executor(130) sets CAS information matched with the broadcasting contents by executing CAS processing for the broadcasting contents. A broadcasting unit(140) multiplexes and broadcasts the broadcasting orchestration information by scrambling the DRM-packaged broadcasting contents and the CAS information. An authority issuer(150) issues playback authority when the playback authority for the broadcasting contents is expired.

Description

METHOD AND SYSTEM FOR STORAGE AND PLAYBACK OF BROADCASTING CONTENTS, RIGHTS ISSUER APPLIED TO THE SAME}

The present invention relates to delivery and reproduction of broadcast content, and more particularly, a terminal for receiving a broadcast signal broadcasted according to a broadcast schedule based on a convergence of a CAS system and a DRM technology, corresponding broadcast through a preset reservation schedule. Implementing a service for downloading and storing contents or recording / recording of broadcasting contents that are being watched and broadcasting, and granting reproduction rights to such broadcasting contents, and reproducing contents when the authority expires or only broadcast contents are copied and distributed. The present invention relates to a method and system for storing and reproducing broadcast content and to a device for issuing authority, thereby enabling the purchase of a reproduction right.

The features of digital broadcasting are summarized as multichannel, high quality and multifunctional. In particular, with the development of multiplexing technology, video, audio, and data can be bundled and transmitted simultaneously regardless of content and size, and a return channel through a modem is formed to enable interactive service. Accordingly, digital broadcasting can overcome the limitations of existing analog broadcasting and provide high value-added multimedia services to viewers. However, in the integrated broadcasting of digital data, if mutual security is not established between the transmitting side and the receiving side, the commercial structure of the broadcasting collapses. In addition, broadcasters seek to provide high-quality broadcasting services to subscribers and to provide paid broadcasting services to collect subscriber fees from their existing advertising revenues by activating multi-channel and professional channels. It is hoped that only authorized subscribers who are protected and legitimately receive can receive. The CAS (Conditional Access System) was developed to solve this problem.

CAS is a system that introduces the concept of subscribers to a broadcast so that only subscribers with legitimate viewing rights can receive a particular program. A set of digital broadcast receivers allows the receiver to determine whether a particular broadcast program can be received. It means the process. The CAS transmits an encrypted program signal at the transmitter and entitlements given to individual or specific groups of recipients.On the receiving side, only authorized subscribers use a smart card mounted on the receiver to decrypt. To receive a program.

In general, CAS scrambles A / V streams into CW (Control Word), multiplexes and transmits ECM and EMM encrypted CW, and decrypts the ECM and EMM using a smart card at the receiving side to obtain CW and scramble Descrambled A / V streams.

Furthermore, DRM is applied to the broadcast content to protect the copyright of the broadcast content provided by the broadcast service. Accordingly, the trend of the broadcast service is that the CAS and the DRM converge to meet the requirements between the content provider and the service user. We aim to upgrade the system.

In accordance with this trend, only the corresponding broadcast contents are stored according to a scheduled schedule for each broadcasting service user, so that the user can watch the broadcast whenever there is time, or save the broadcast contents of another channel while watching the broadcasted broadcast and later watch the broadcast. There is a demand from a service user, and a method of generating a revenue model from a content provider's point of view is also required.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is a terminal that receives a broadcast signal broadcasted according to a broadcast schedule based on a convergence of a CAS system and a DRM technology. Implementing a service for downloading and storing the corresponding broadcast content through the recording, or recording / recording the broadcast content that is being watched (broadcasting through the terminal screen or broadcasting in the background). Method and system for storing and reproducing broadcast content to purchase reproducing right by granting reproducing right to content and disabling content reproducing when the right expires or only broadcast content is copied and distributed, and applied thereto It is to provide a device for issuing authorization.

According to a first aspect of the present invention, there is provided a method for storing and playing back broadcast content, the method comprising: (a) providing a download reservation service for at least one broadcast content organized in a broadcast schedule; Forming reservation schedule information for each subscriber based on the information input through the user interface and delivering the same to the broadcast viewing terminal; (b) the broadcasting system executes DRM packaging to set usage control information for the broadcast content; And setting and scrambling CAS information of the broadcast content by executing CAS processing; (c) multiplexing the scrambling data including the DRM packaged broadcast content and the CAS information with broadcast programming information formed as the broadcast schedule; Broadcasting by the broadcast receiving terminal; To receive the signal on the basis of the Broadcasting about schedule information is characterized by comprising the step of downloading the broadcast contents.

Preferably, the method for storing and playing back the broadcast content includes (e) determining whether to play the broadcast content based on the subscriber information stored in the smart card in the broadcast viewing terminal to play the broadcast content. It further comprises a step.

In addition, a system for storing and reproducing broadcast contents according to a second aspect of the present invention for achieving the above object is provided through a user interface providing a download reservation service for at least one broadcast content organized in a broadcast schedule. A download reservation setting unit for forming reservation schedule information for each subscriber and transmitting it to a corresponding broadcast viewing terminal, a broadcast scheduling manager for managing broadcast scheduling information for the broadcast schedule, and a DRM packaging unit for executing DRM packaging for the broadcast content. A CAS execution unit for setting CAS information corresponding to the broadcast content by performing CAS processing on the broadcast content, and performing scrambling on the DRM packaged broadcast content and the CAS information and multiplexing the broadcast content; Includes broadcast transmitter for broadcasting And that is characterized.

Preferably, the system for storing and reproducing the broadcast contents further includes an authority issuing unit for issuing the reproducing authority when the reproducing authority for the broadcasting content that the broadcasting viewing terminal executes is terminated. It is done.

In addition, the authorization issuing device according to the third aspect of the present invention for achieving the above object, the broadcast viewing terminal through the arrival of the preset broadcast time through the download reservation service for at least one or more broadcast content organized in the broadcast schedule; Download and play broadcast content, request for issuance of the playback right through a communication network when the playback right for the broadcast content is terminated, and issue the playback right in response to the request; .

In addition, the method for the storage and playback of broadcast content according to the fourth aspect of the present invention for achieving the above object, (A) providing a PVR and PAR reservation service for at least one or more broadcast content organized in a broadcast schedule; Forming reservation schedule information for each subscriber through a broadcasting system based user interface and delivering the same to the broadcast viewing terminal; (b) the broadcasting system executes compression multiplexing on the broadcast content to form compressed multiplexed broadcast content; And setting and scrambling CAS information of the broadcast content by executing CAS processing. And broadcasting by the broadcast viewing terminal. And recording / recording the corresponding broadcast content through the recording / recording setting which is additionally set by receiving the loadcasting signal, or recording / recording the broadcast content based on the reservation schedule information.

Preferably, the method for storing and playing back the broadcast content includes (e) determining whether to play the broadcast content based on the subscriber information stored in the smart card in the broadcast viewing terminal to play the broadcast content. It further comprises a step.

Preferably, the method for storing and reproducing the broadcast content further includes (f) receiving a reproduction right for the broadcast content from the broadcasting system when the reproduction right for the broadcast content is terminated. It is done.

In addition, a system for storing and reproducing broadcast contents according to a fifth aspect of the present invention for achieving the above object includes a user interface for providing a PVR and PAR reservation service for at least one broadcast content organized in a broadcast schedule. A recording / recording reservation setting unit for forming reservation schedule information for each subscriber and transmitting the same to the broadcast viewing terminal, a broadcasting program management unit for managing broadcast program information for the broadcast schedule, and performing compression multiplexing on the broadcast content. A compression multiplexer to perform CAS processing, and a CAS execution unit to set CAS information about the broadcast content, and to perform scrambling on the compressed multiplexed broadcast content and the CAS information to multiplex with the broadcast programming information Characterized in that it comprises a broadcast transmitting unit for casting All.

Preferably, the system for storing and reproducing the broadcast content may further include an authority issuing unit for issuing the reproduction right when the reproduction right for the broadcast content is terminated.

In addition, the authorization issuing device according to the sixth aspect of the present invention for achieving the above object, the arrival of a preset broadcast time through the PVR and PAR reservation service for at least one or more broadcast content that the broadcast viewing terminal is organized in the broadcast schedule Recording / recording and playing the broadcast content, or recording / recording and playing the broadcast content through additional recording / recording setting while executing the broadcast content, and when the reproduction authority for the broadcast content is terminated, a communication network It is characterized in that for requesting the issuance of the reproduction authority through the issuance, and issuing the reproduction authority in response to the request.

Accordingly, in the present invention, a terminal receiving a broadcast signal broadcasted according to a broadcast schedule based on the convergence of a CAS system and a DRM technology, downloads and stores corresponding broadcast content through a preset schedule, or broadcasts that are being watched. Implementing a service for recording / recording contents, and granting playback rights to such broadcast contents separately, so that the contents cannot be played when the rights expire or when only broadcast contents are copied and distributed. , By creating new reservation services such as download reservation service and PVR and PAR reservation service, to strengthen the competitiveness with other services related to providing broadcast content, as well as providing reproduction rights for broadcast content. Additional revenue model There is an advantage that can be created.

Hereinafter, exemplary embodiments of a system and method for storing and playing back broadcast content according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a system for storing and playing back broadcast content according to an embodiment of the present invention. As shown in FIG. 1, a system for storing and reproducing broadcast content includes a service for downloading and storing broadcast content transmitted according to a broadcast schedule by using a pre-stored reservation schedule (hereinafter, referred to as a 'download reservation service'). To implement the

The configuration of such a system forms broadcasting schedules of service subscribers by forming reservation schedule information for each service subscriber through a user interface (eg, a home page) that provides a download reservation service for at least one broadcast content organized in a broadcast schedule. Download reservation setting unit 160 for transmitting to the terminal 200, broadcast programming management unit 120 for managing broadcast programming information for the broadcast content, DRM packaging unit 110 for executing DRM packaging for the broadcast content And a CAS execution unit 130 for executing CAS processing to set CAS information for the broadcast content, and performing scrambling by combining the DRM packaged broadcast content and CAS information, and multiplexing the scrambled data and broadcast organization information. It includes a broadcast transmitting unit 140 for broadcasting to.

Furthermore, the system may further include an authority issuing unit 150 for issuing the reproduction authority in response to a request of the broadcast viewing terminal 200 when the reproduction authority for the broadcast content is terminated.

The reservation schedule information preferably includes a download start time and a download end time of a broadcast content, and is preferably formed as an SMS message in a message transmission method and transmitted to the broadcast viewing terminal 200.

In addition, the download schedule setting unit 160 allows a service subscriber to connect to the user interface through a wired terminal (for example, a personal computer) or to perform a communication with a wireless terminal (for example, a broadcast viewing terminal). It is preferable to form the reservation schedule information by making a swap connection to the user interface (200).

In addition, forming the reservation schedule information may be set by the user through a reservation schedule menu executed by the broadcasting viewing terminal based on the broadcasting schedule information, and the terminal itself may form the reservation schedule information. The broadcast viewing terminal to be executed is a terminal capable of performing communication through a web or a swap connection or a terminal capable of performing communication.

The DRM packaging unit 110 executes DRM packaging for broadcast content to set usage control information for the broadcast content, and the usage control information includes at least one of whether the broadcast content can be distributed, how many times it can be played, and the playable time. It includes either.

The CAS execution unit 130 sets subscriber information through CAS processing, and the subscriber information downloads an ECM (Entitlement Control Message), which is an authorization control message for protecting broadcast content, an encryption key of the ECM, and the broadcast content. It includes at least one of the Entitlement Management Message (EMM), which is an authorization management message used for subscriber authentication, including authorization information.

When the broadcast content is stored in the external memory, the ECM sets information on whether the playback of the broadcast content is still possible at the time of subscribing to the service, whether the external memory is bound, and a terminal capable of playing the broadcast content. It is preferable to include at least one of binding information for setting device binding or not, and playback time (or the number of playbacks) of broadcast content.

In addition, when the broadcast content is stored in the internal memory, the ECM preferably includes information that sets whether the playback of the broadcast content is still possible when the service is unsubscribed.

FIG. 2 is a conceptual diagram illustrating a download procedure for broadcast content of the broadcast viewing terminal 200 shown in FIG. 1. As shown in FIG. 2, when the broadcast viewing terminal 200 receives a broadcast signal broadcasted and receives corresponding broadcast content through reservation schedule information, the terminal is watching a broadcast and the terminal is not executing the broadcast. Processing for storing content is divided into.

When the broadcast viewing terminal 200 is executing broadcast viewing, the list information of the broadcast content corresponding to the broadcast time point and the received broadcast signal are formed based on the reservation schedule information, and the result is matched. The broadcast content to be determined is pre-booked and downloaded.

Alternatively, when the broadcast viewing terminal 200 does not execute broadcast viewing, the broadcast viewing terminal 200 switches from the sleep mode to the activation mode by receiving the broadcast signal, and executes the above-mentioned downloading process in the activation mode.

Here, switching from the sleep mode to the activation mode is implemented by reception of a broadcast signal, or may be implemented to switch from the sleep mode to the activation mode through broadcast time information included in the reservation schedule information.

3 is a conceptual diagram of a playback procedure for broadcast content of the broadcast viewing terminal 200 shown in FIG. 1. As shown in FIG. 3, when the broadcast viewing terminal 200 determines subscriber information stored in the smart card of the broadcast viewing terminal 200 in order to play the stored broadcast content, the broadcast viewing terminal 200 determines whether to subscribe to a service during playback. Therefore, it is determined whether the user of the broadcast viewing terminal 200 is a user suitable for broadcast reception, and the playback is determined according to the result. Subsequently, if it is determined that broadcast reproduction is possible, content reproduction is executed to check the reproduction execution time (or reproduction execution count), and the information is also stored.

In addition, if it is determined that the user is not subscribed to the service, whether to reproduce the content is determined based on control information for setting whether the broadcast content is playable when the service subscription included in the CAS information is cancelled.

Furthermore, when the broadcast viewing terminal 200 stores the broadcast content in an external memory, the external memory may be transferred to another broadcast viewing terminal 300 (hereinafter referred to as a 'second broadcast viewing terminal 300'). It may be. In this case, whether to play the broadcast content is determined through binding information that sets whether the external memory included in the CAS information is bound and whether the device is bound to a terminal capable of playing the broadcast content.

Similarly, even when the second broadcast viewing terminal 300 plays the broadcast content, the second broadcast viewing terminal 300 is executed based on the remaining play remaining time, and when the preset play time (or the number of play) ends, a play right for this is additionally issued. The process must be carried out.

Meanwhile, in addition to delivering the broadcast content to the second broadcast viewing terminal 300 through an external memory, the broadcast content may be delivered to the second broadcast viewing terminal 300 through copying of broadcast content. In this case, the second broadcast viewing terminal 300 may be reproduced by receiving a reproduction right for the broadcast content from the authority issuing unit 150 of the broadcasting system 100.

4 is a conceptual diagram for issuing a reproduction right of the broadcast viewing terminal 200 shown in FIG. 1. As shown in FIG. 4, the broadcast viewing terminal 200 for playing the received broadcast content or the second broadcast viewing terminal 300 for receiving and playing the broadcast content through an external memory may be connected to the broadcast content. The playback is limited to the preset playback time (or the number of playbacks) of the CAS information provided. When the playback time (or the number of playbacks) is reached, the authority of the broadcasting system 100 is issued through a communication network such as a mobile communication network or the Internet. The controller 150 accesses the unit 150 and receives and executes a reproduction right corresponding to the broadcast content.

In this case, when the second broadcast viewing terminal 300 is provided with a copy of the broadcast content, the second broadcast viewing terminal 300 may execute playback only if a reproduction right for the second broadcast viewing terminal is issued.

FIG. 5 is a detailed configuration diagram of a system for storing and playing back broadcast content shown in FIG. 1. As shown in FIG. 5, the system for storing and reproducing broadcast content includes a download reservation setting unit 160, a broadcast scheduling manager 120, a DRM packaging unit 110, a CAS execution unit 130, and a broadcast transmitter. 140, and further includes an authority issuing unit 150.

The authority issuing unit 150 manages an authorization issuance authentication key based on a table for identifying broadcast content, and performs an authentication process for the broadcasting watching terminal 200 according to a request for issuing a reproduction right of the broadcasting viewing terminal 200. The DRM authorization issuer for issuing the authorization issuance authentication key and a request for issuing a reproduction authority of the broadcast viewing terminal 200 are transmitted to the DRM authorization issuer to deliver the authorization issuance authentication key provided to the broadcast viewing terminal 200. It includes a presentation server.

Furthermore, the authority issuing unit 150 may further include a CA server for newly generating and changing the certificate of the reproduction authority for the broadcast content.

In addition, the download reservation setting unit 160 provides a user interface to communicate with the service subscriber and the broadcast schedule terminal 200 through the reservation schedule information formed through the setting for the broadcast configuration of the service subscriber in the broadcast manner message viewing terminal 200 It includes a message transmission server for delivering to, wherein the application server may be implemented as a web server, the message transmission server is preferably implemented as an SMS server based on a mobile communication network.

The broadcast schedule management unit 120 includes a schedule management server for forming broadcast schedule information according to a broadcast schedule, and an EPG server for receiving the broadcast schedule information and converting it into an EPG format.

The DRM packaging unit 110 is implemented to include a DRM package for executing DRM packaging for broadcast content and a broadcast content server for storing DRM packaged broadcast content.

The CAS execution unit 130 is used for subscriber authentication, including an ECM generation module for forming an ECM, which is an authorization control message for protecting broadcast content, an encryption key of the ECM, and authorization information for downloading the broadcast content. EMM generation module for forming an EMM that is a rights management message.

The broadcast transmitter 140 broadcasts a CAS scrambler for collecting and scrambling the DRM packaged broadcast content and the subscriber information, a multiplexer for multiplexing the scrambled data, and the broadcast program information to a broadcast network. And a transmitter for transmitting to the broadcast network through a dedicated channel for providing only a download reservation service.

FIG. 6 is a flowchart illustrating an operation process of a system for storing and playing back broadcast content illustrated in FIG. 1. The method for storing and reproducing broadcast content is performed by executing a download reservation service setting by accessing a user interface based on the broadcast system 100 through a subscriber's personal computer or a broadcast viewing terminal 200 capable of communicating (S100). ).

Here, in the case where the user sets through the reservation schedule menu executed by the broadcast viewing terminal itself, the download viewing service can be set even if the broadcasting viewing terminal is a terminal which cannot perform communication.

In the setting process at step S100, a process of forming reservation schedule information for each subscriber and transmitting it to the corresponding broadcast viewing terminal 200 is subsequently performed (S102 and S104).

Subsequently, the DRM packaging unit 110 of the broadcast system 100 executes DRM packaging for predetermined broadcast content, sets usage control information for the broadcast content, and executes CAS processing through the CAS execution unit 130. The CAS information is set by executing (S106).

After the step S106, scrambling is performed including the DRM packaged broadcast content and CAS information, and the scrambling data and the broadcast program information thus formed are multiplexed and broadcasted (S108 to S112).

The broadcast viewing terminal 200 additionally executes a process for switching to the activation mode when the terminal state is in the inactive mode (ie, the sleep mode) at the time of receiving the broadcasted broadcast signal (S114 and S116). In operation S118, the controller determines whether the content matches with the broadcast content included in the broadcast signal based on the pre-stored reservation schedule information.

In step S118, if it is confirmed that the broadcast content is a content reserved in advance, it is reserved or stored immediately (S120).

Further, when the broadcast viewing terminal 200 or the second broadcast viewing terminal 300 executes the reproduction of the broadcast content (S122), the broadcast viewing terminal 200 or the second broadcast viewing terminal 300 By determining the subscriber information stored in the smart card of the user, it is determined whether the user of the broadcast viewing terminal 200 or the second broadcast viewing terminal 300 is a user suitable for broadcast reception by determining whether to subscribe to a service during playback. If the service subscription is terminated in this process, it is determined whether to play the content through the information set to be playable even when the subscription is canceled from the information included as control information in the CAS information. (S124 and S126).

In step S122, the process of determining whether the reproduction right of the broadcast content for reproduction is terminated through the CAS information provided with the broadcast content is also executed, and the specificity of determining whether the reproduction right of the broadcast content is terminated The process is performed based on the information stored at the time of storing or downloading the broadcast content and the reproduction authority information which is updated by counting the reproduction execution time or the reproduction execution count for each subsequent reproduction. The process for receiving a reissue is additionally performed (S128 and S130).

7 is a configuration diagram of a system for storing and playing back broadcast content according to another embodiment of the present invention. As shown in FIG. 7, a system for storing and playing broadcast contents includes a service for storing corresponding broadcast contents by real-time recording / recording of broadcast contents that are being watched or broadcasting, or by reserved recording / recording according to a pre-stored reservation schedule. (Hereinafter referred to as 'PVR and PAR reservation service').

The configuration of such a system forms reservation schedule information for each service subscriber through a user interface that provides PVR and PAR reservation service for at least one broadcast content organized in a broadcast schedule, and delivers the reservation schedule information to the broadcast subscriber terminal 500 of the corresponding service subscriber. Recording / recording reservation setting unit 460 for managing broadcast broadcasting management unit 420 for managing broadcast programming information for broadcast content, compression multiplexing unit 410 for executing compression multiplexing for broadcast content, and CAS processing. And a CAS execution unit 430 for setting CAS information on the broadcast content, and combining the compressed multiplexed broadcast content and CAS information to perform scrambling, multiplexing scrambled data and broadcast organization information and broadcasting it to a broadcasting network. It includes a broadcast transmitting unit 440 to.

Furthermore, when the broadcast viewing terminal 500 terminates the playback right for the broadcast content, the system may include an authority issuing unit 450 for issuing the playback right in response to a request of the broadcast viewing terminal 500. It is preferable to further include.

8 is a conceptual diagram of a recording / recording procedure for broadcast content of the broadcast viewing terminal 500 illustrated in FIG. 7. As shown in FIG. 8, when the broadcast viewing terminal 500 receives the broadcast signal and receives the corresponding broadcast content through the reservation schedule information, the terminal is watching the broadcast and the terminal is not executing the broadcast. Processing is performed to store the content, which is divided into or processed to store the corresponding content by immediately recording / recording through the recording / recording setting by the additional setting of the subscriber.

When the broadcast viewing terminal 500 is executing broadcast viewing, the list information of the reserved broadcast content and the received broadcast signal are matched to the broadcast time point based on the reservation schedule information to form a result, and the matching is performed through the matching result. The broadcast content to be determined as previously reserved content is downloaded and stored.

Alternatively, when the broadcast viewing terminal 500 does not execute broadcast viewing, the broadcast viewing terminal 500 switches from the sleep mode to the activation mode by receiving the broadcast signal, and executes the above-mentioned downloading process in the activation mode.

Here, switching from the sleep mode to the activation mode is implemented by reception of a broadcast signal, or may be implemented to switch from the sleep mode to the activation mode through broadcast time information included in the reservation schedule information.

FIG. 9 is a conceptual diagram of a playback procedure for broadcast content of the broadcast viewing terminal 500 illustrated in FIG. 7. As shown in FIG. 7, the broadcast viewing terminal 500 determines the subscriber information stored in the smart card in the broadcast viewing terminal 500 to play the stored broadcast content, thereby determining whether to subscribe to a service during playback. Therefore, it is determined whether the user of the broadcast viewing terminal 500 is a user suitable for broadcast reception, and the playback is determined according to the result. Subsequently, if it is determined that broadcast reproduction is possible, content reproduction is executed to check the reproduction execution time (or reproduction execution count), and the information is also stored.

In addition, if it is determined that the user is not subscribed to the service, whether to reproduce the content is determined based on control information for setting whether the broadcast content is playable when the service subscription included in the CAS information is cancelled.

Furthermore, when the broadcast viewing terminal 500 stores the broadcast content in an external memory, the external memory may be transferred to another broadcast viewing terminal 500 (hereinafter referred to as a 'second broadcast viewing terminal 600'). It may be. In this case, it is determined whether to play the broadcast content through binding information that sets whether the external memory is bound and whether the device is bound to a terminal capable of playing the broadcast content among information included in the CAS information.

Similarly, even when playing the broadcast content in the second broadcast viewing terminal 600, it is executed based on the remaining play remaining time, and when a preset play time (or play count) ends, a play right for this is additionally issued. The process must be carried out.

Meanwhile, in addition to delivering the broadcast content to the second broadcast viewing terminal 600 through an external memory, the broadcast content may be delivered to the second broadcast viewing terminal 600 through copying of broadcast content. In this case, the second broadcast viewing terminal 600 may be reproduced by receiving a reproduction right for the broadcast content from the authority issuing unit 450 of the broadcasting system 400.

FIG. 10 is a conceptual diagram for issuing a reproduction right of the broadcast viewing terminal 500 shown in FIG. 7. As illustrated in FIG. 10, the broadcast viewing terminal 500 for playing the received broadcast content or the second broadcast viewing terminal 600 for receiving and playing the broadcast content through an external memory may be connected to the broadcast content. Reproduction is limited to a preset play time (or play count) in the CAS information provided, and when the play time (or play count) is reached, authority of the broadcast system 400 is issued through a mobile communication network or a communication network such as the Internet. The controller 450 accesses the unit 450 and receives and executes a playback right corresponding to the broadcast content.

In this case, when the second broadcast viewing terminal 600 is provided with a copy of the broadcast content, the second broadcast viewing terminal 600 may be reproduced only by receiving a reproduction right.

FIG. 11 is a detailed configuration diagram of a system for storing and playing back broadcast content shown in FIG. 7. As shown in FIG. 11, the system for storing and reproducing broadcast content includes a recording / recording reservation setting unit 460, a broadcast scheduling manager 420, a compression multiplexer 410, a CAS execution unit 430, and a broadcast. It includes a transmitter 440, and further includes an authority issue unit 450.

The authority issuing unit 450 manages an authorization issuance authentication key based on a table for identifying broadcast content, and performs an authentication process for the broadcasting watching terminal 500 according to a request for issuing a reproduction right of the broadcasting viewing terminal 500. Presentation for delivering the authority issuance authorization key for issuing the authorization issuance authentication key and the authorization issuance authentication key provided by transmitting the request for issuing the reproduction authority of the broadcast viewing terminal 500 to the authorization issuance terminal 500. Include a server.

Furthermore, the authority issuing unit 450 may further include a CA server for newly generating and changing the certificate of the reproduction authority for the broadcast content.

In addition, the recording / recording reservation setting unit 460 provides a user interface to provide a user interface for communicating with a service subscriber, and an application server for serving as a user interface and a message of reservation schedule information formed through setting of a broadcasting schedule of the service subscriber. It includes a message transmission server for transmitting to the broadcast viewing terminal 500, the application server may be implemented as a web server, the message transmission server is preferably implemented as an SMS server based on a mobile communication network .

The broadcast schedule management unit 420 includes a schedule management server for forming broadcast schedule information according to a broadcast schedule, and an EPG server for receiving the broadcast schedule information and converting it into an EPG format.

The compression multiplexer 410 is implemented to include a compression multiplexer for performing compression multiplexing on broadcast content and a broadcast content server storing compressed multiplexed broadcast content.

The CAS execution unit 430 is used for subscriber authentication, including an ECM generation module for forming an ECM, which is an authorization control message for protecting broadcast content, an encryption key of the ECM, and authorization information for downloading the broadcast content. EMM generation module for forming an EMM that is a rights management message.

The broadcast transmitter 440 broadcasts a CAS scrambler for collecting and scrambled the compressed multiplexed broadcast content and the subscriber information, a multiplexer for multiplexing the scrambled data with the broadcast program information, and broadcasting the multiplexed signal to a broadcast network. It includes a transmitter for.

FIG. 12 is a flowchart illustrating an operation process of a system for storing and playing back broadcast content illustrated in FIG. 7. As shown in FIG. 12, the method for storing and playing back broadcast contents is connected to a user interface based on the broadcasting system 400 through a subscriber's personal computer or a broadcast viewing terminal 500 that can execute communication to reserve a PVR and a PAR. Proceeds to executing the service setting (S200).

In the setting process at step S200, a process of forming reservation schedule information for each subscriber and transmitting it to the corresponding broadcast viewing terminal 500 is subsequently performed (S202 and S204).

Subsequently, the compression multiplexer 410 of the broadcast system 400 executes compression multiplexing on predetermined broadcast content to set usage control information for the broadcast content and the CAS execution unit 430 CAS processing is performed based on the reservation schedule information to set CAS information (S206).

After step S206, scrambling is performed including compressed multiplexed broadcast content and CAS information, and the scrambling data and broadcast programming information thus formed are multiplexed and broadcasted (S208 to S212).

The broadcast viewing terminal 500 additionally executes a process for switching to the activation mode when the terminal state is in the inactive mode (ie, the sleep mode) at the time of receiving the broadcast signal (S214 and S216). In operation S218, it is determined whether or not matching with the broadcast content included in the broadcast signal is performed based on the reservation schedule information received in advance in the state.

In step S218, if it is confirmed that the broadcast content is a content reserved in advance, it is recorded / recorded (S220).

Furthermore, when the broadcast viewing terminal 500 or the second broadcast viewing terminal 600 executes reproduction of the broadcast content (S222), the broadcast viewing terminal 500 or the second broadcast viewing terminal 600 By determining the subscriber information stored in the smart card of the user, it is determined whether to subscribe to the service during playback to determine whether the user of the broadcast viewing terminal 500 or the second broadcast viewing terminal 600 is a user suitable for broadcast reception. If the service subscription is terminated in this process, it is determined whether to play the content through the information set to be playable even when the subscription is canceled from the information included as control information in the CAS information. (S224 and S226).

In step S222, the process of determining whether or not the right of reproduction of the broadcast content for reproduction through the subscriber information provided with the broadcast content is also performed, and a specific method of determining whether the right of reproduction of the broadcast content is terminated. The process is performed based on the information stored at the time of storing or downloading the broadcast content and the reproduction authority information which is updated by counting the reproduction execution time or the reproduction execution count for each subsequent reproduction. The process for receiving a reissue is additionally performed (S228 and S230).

When the broadcast viewing terminal 500 executes the playback of the broadcast content through the above process, the playback execution time or the number of playback executions are counted to form information on the remaining play time or the remaining play count (S232). And S234).

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below. I can understand that you can.

In addition, the present invention is based on the convergence of the CAS system and the DRM technology, the terminal receiving the broadcast signal broadcast according to the broadcast schedule to download and store the corresponding broadcast content through a preset reservation schedule, or broadcast content that is watching the broadcast A system for implementing a service for recording / recording a video, and granting playback rights to such broadcast contents separately so that the contents cannot be played when the rights expire or when only broadcast contents are copied and distributed. And according to the implementation of the device, it is an invention with industrial applicability because the possibility of commercialization or sales is not only sufficient but also practically evident.

1 is a configuration diagram of a system for storing and playing back broadcast content according to an embodiment of the present invention;

2 is a conceptual diagram illustrating a download procedure for broadcast content of the broadcast viewing terminal shown in FIG. 1;

3 is a conceptual diagram of a playback procedure for broadcast content of the broadcast viewing terminal shown in FIG. 1;

4 is a conceptual diagram for issuing a reproduction right of the broadcast viewing terminal shown in FIG. 1;

5 is a detailed configuration diagram of a system for storing and playing back broadcast content shown in FIG. 1;

FIG. 6 is a flowchart illustrating an operation process of a system for storing and playing back broadcast content shown in FIG. 1;

7 is a configuration diagram of a system for storing and playing back broadcast content according to another embodiment of the present invention;

8 is a conceptual diagram of a recording / recording procedure for broadcast content of the broadcast viewing terminal shown in FIG. 7;

9 is a conceptual diagram of a playback procedure for broadcast content of the broadcast viewing terminal shown in FIG. 7;

10 is a conceptual diagram for issuing a reproduction right of the broadcast viewing terminal shown in FIG. 7;

11 is a detailed configuration diagram of a system for storing and playing back broadcast content shown in FIG. 7;

FIG. 12 is a flowchart illustrating an operation process of a system for storing and playing back broadcast content illustrated in FIG. 7.

<Description of Symbols for Main Parts of Drawings>

100, 400: broadcasting system 110: DRM packaging unit

120, 420: broadcasting organization management unit 130, 430: CAS execution unit

140, 440: broadcasting transmitter 150, 450: authority issuance unit

160: download reservation setting unit 200, 500: broadcast viewing terminal

300, 600: second broadcast viewing terminal 410: compression multiplexer

460: Recording / recording reservation setting unit

Claims (37)

(A) Forming reservation schedule information for each subscriber based on information input through a broadcasting system-based user interface that provides a download reservation service for at least one broadcast content organized in a broadcast schedule, and transmitting the same to a corresponding broadcast viewing terminal; step; (B) the broadcasting system executing DRM packaging to set usage control information for the broadcast content, and executing CAS processing to set and scramulate CAS information for the broadcast content; (C) multiplexing and broadcasting scrambling data including the DRM packaged broadcast content and the CAS information with broadcast program information formed in the broadcast schedule; And (D) receiving, by the broadcast viewing terminal, the broadcasted signal based on the reservation schedule information, and downloading corresponding broadcast content. The method of claim 1, wherein the method for storing and playing back the broadcast content includes: (E) storing and reproducing the broadcast content by determining whether to reproduce the broadcast content based on the subscriber information stored in the smart card at the broadcast viewing terminal and playing the broadcast content. How to. The method of claim 1 or 2, wherein the method for storing and playing back the broadcast content includes: (F) if the reproduction right for the broadcast content is terminated, receiving the reproduction right for the broadcast content from the broadcasting system, further comprising: storing and playing the broadcast content. The method of claim 1 or 2, wherein the step (b) At least one of an ECM, which is an authority control message for protecting the broadcast content, and an EMM, which is an authority management message used for subscriber authentication, including an encryption key of the ECM and authority information for downloading the broadcast content in the CAS information. And storing and playing back broadcast content. The method of claim 4, wherein the ECM is When the broadcast content is stored in the external memory, information on whether to play the broadcast content when the service is subscribed, whether to bind the external memory, and whether to bind a device to a terminal capable of playing the broadcast content are set. At least one of binding information and a playing time (or playing count) of the broadcast content; If the broadcast content is stored in the built-in memory, the method for storing and playing the broadcast content, characterized in that it comprises information that sets whether or not the playability of the broadcast content when the subscription subscription. The method of claim 1 or 2, wherein step (a) And storing the reservation schedule information as an SMS message. The method of claim 1 or 2, wherein step (a) And a download start time and a download end time of the broadcast content in the reservation schedule information. The method of claim 1 or 2, wherein step (a) Through a wired terminal for web access to the broadcasting system based user interface, a wireless terminal for swapping access to the broadcasting system based user interface, or executed by the broadcasting viewing terminal based on the broadcasting schedule information. And storing the reservation schedule information through a reservation schedule menu. The method of claim 1 or 2, wherein the step (b) And at least one of whether the broadcast content is available for distribution, a number of times of play, and a play time in the use control information. The method of claim 1 or 2, wherein the step (d) (D-1) if the broadcast viewing terminal is executing broadcast viewing, matching the broadcasted signal with the list information of the broadcast content reserved at the time of arrival based on the reservation schedule information; And (D-2) downloading the broadcast content through the result of the matching. The method of claim 1 or 2, wherein the step (d) (D-1) when the broadcast viewing terminal does not perform broadcast watching, switching from a sleep mode to an active mode by receiving the broadcasted signal; (D-2) matching list information of the broadcast content reserved at the time of arrival based on the reservation schedule information and the broadcasted signal in the activation mode; And (D-3) The method for storing and playing back broadcast content comprising the step of downloading the broadcast content through the result of the matching. The method of claim 11, wherein the step (la-1) If the broadcast viewing terminal does not perform broadcast viewing, the method further comprises the step of switching from the sleep mode to the active mode based on the broadcast time information included in the reservation schedule information for the storage and playback of the broadcast content Way. The method of claim 1 or 2, wherein the step (d) When the broadcast content is stored in an external memory, combining the external memory through binding information that sets whether the external memory included in the CAS information is bound and whether the device is bound to a terminal capable of playing the broadcast content. And determining whether to play the broadcast content in a terminal. The terminal of claim 13, wherein the terminal combines the external memory. And at least one of the broadcast viewing terminal or a second broadcast viewing terminal corresponding to the broadcast viewing terminal. The method of claim 13, wherein the step (d) And determining and storing a playback execution time or a number of playback execution times that are executed by playing the broadcast content. The method of claim 15, wherein the replay execution time or the number of replay execution times are And reproducing the broadcast content when the preset playback time or the number of playbacks of the broadcast content is included in the CAS information. A download reservation setting unit configured to form reservation schedule information for each subscriber through a user interface that provides a download reservation service for at least one broadcast content organized in a broadcast schedule, and deliver the reservation schedule information to a corresponding broadcast viewing terminal; A broadcast program manager for managing broadcast program information for the broadcast schedule; A DRM packaging unit for executing DRM packaging for the broadcast content; A CAS execution unit for executing CAS processing on the broadcast content to set CAS information corresponding to the broadcast content; And And a broadcast transmitter configured to perform broadcasting by multiplexing the broadcast schedule information by performing scrambling on the DRM packaged broadcast content and the CAS information. 18. The system of claim 17, wherein the system for storage and playback of broadcast content is And a right issuing unit for issuing the playing right when the playing right of the broadcasting content, which is played by the broadcasting viewing terminal, is terminated. The method of claim 18, wherein the authority issuance unit A DRM authority issuer for managing an authorization issuance authentication key based on a table for identifying the broadcast content and issuing the authorization issuance authentication key in response to a request for issuing the reproduction right; And And a presentation server for transmitting the request for issuing the reproduction right to the DRM authority issuer and delivering the authority issuance authentication key to the broadcast viewing terminal. 18. The apparatus of claim 17, wherein the download reservation setting unit An application server for providing the user interface; And And a message transmission server for transmitting the reservation schedule information to the broadcast viewing terminal in a message manner. The method of claim 20, wherein the application server System for storing and playing back broadcast content, characterized in that implemented as a web server. The method of claim 21, wherein the application server A system for storing and playing back broadcast contents, comprising: implementing the user interface as a home page. 21. The method of claim 20, wherein said message transmission server System for storage and playback of broadcast content, characterized in that the SMS server based on a mobile communication network. The method of claim 17, wherein the broadcast viewing terminal And the reservation schedule information is formed through a reservation schedule menu which is executed by the terminal itself based on the broadcast schedule information. 18. The system of claim 17, wherein the broadcast scheduling manager A schedule management server for forming the broadcast schedule information; And And an EPG server for receiving the program information and converting the information into an EPG format. The method of claim 17, wherein the DRM packaging unit A DRM packager that executes DRM packaging for the broadcast content; And And a broadcast content server configured to store the DRM packaged broadcast content. 18. The method of claim 17, wherein the CAS execution unit An ECM generation module for forming an ECM, which is an authority control message for protecting the broadcast content; And And an EMM generation module for forming an EMM, which is an authorization management message used for subscriber authentication, including an encryption key of the ECM and authorization information for downloading the broadcast content. system. 18. The apparatus of claim 17, wherein the broadcast transmitter A CAS scrambler for collecting and scrambling the DRM packaged broadcast content and the CAS information; A multiplexer for multiplexing the scrambled data with the broadcast program information; And And a transmitter for broadcasting the multiplexed signal to a broadcast network. The communication network when the broadcast viewing terminal downloads and plays the broadcast content at the arrival of a preset broadcast time through a download reservation service for at least one broadcast content organized in a broadcast schedule, and the reproduction authority for the broadcast content is terminated. Request issuance of the reproduction right through And issuing authority for executing the issuing authority in response to the request. 30. The method of claim 29, wherein the authority issuing device A DRM authority issuer for managing an authorization issuance authentication key based on a table for identifying the broadcast content and issuing the authorization issuance authentication key in response to a request for issuing the reproduction right; And And a presentation server for delivering the authorization issuance authentication key, which is provided by transferring the request for issuing the reproduction authority to the DRM authority issuer, to the broadcast viewing terminal. (A) forming reservation schedule information for each subscriber through a broadcast system-based user interface that provides PVR and PAR reservation service for at least one broadcast content organized in a broadcast schedule, and delivering the same to the broadcast viewing terminal; (B) the broadcast system performing compression multiplexing on the broadcast content to form compressed multiplexed broadcast content, and performing CAS processing to set and scramble CAS information for the broadcast content; (C) multiplexing and broadcasting scrambling data including the compressed multiplexed broadcast content and the CAS information with broadcast program information formed in the broadcast schedule; And (D) the broadcast viewing terminal receiving / receiving the broadcasted signal and recording / recording the corresponding broadcast content through additional recording / recording setting, or recording / recording the broadcast content based on the reservation schedule information; Method for the storage and playback of broadcast content comprising a. 32. The method of claim 31, wherein the method for storing and playing back the broadcast content is (E) storing and reproducing the broadcast content by determining whether to reproduce the broadcast content based on the subscriber information stored in the smart card at the broadcast viewing terminal and playing the broadcast content. How about. 33. The method of claim 31 or 32, wherein the method for storing and playing back the broadcast content is (F) if the reproduction right for the broadcast content is terminated, receiving the reproduction right for the broadcast content from the broadcast system. A recording / recording reservation setting unit configured to form reservation schedule information for each subscriber through a user interface that provides PVR and PAR reservation service for at least one broadcast content organized in a broadcast schedule, and deliver the reservation schedule information to a corresponding broadcast viewing terminal; A broadcast program manager for managing broadcast program information for the broadcast schedule; A compression multiplexer for performing compression multiplexing on the broadcast content; A CAS execution unit for executing CAS processing to set CAS information for the broadcast content; And And a broadcast transmitter for executing broadcasting by multiplexing the compressed multiplexed broadcast content and the CAS information and multiplexing the broadcast content and broadcasting the broadcast content. 35. The system of claim 34, wherein the system for storage and playback of broadcast content is And a right issuing unit for issuing the playing right when the playing right with respect to the broadcasting content is terminated. A broadcast viewing terminal records / reproduces and reproduces the broadcast content at the arrival of a preset broadcast time through a PVR and PAR reservation service for at least one broadcast content organized in a broadcast schedule, or further records while executing the broadcast content. Recording / recording and reproducing the broadcast content through a recording / recording setting, and requesting issuance of the play right through a communication network when the play right for the broadcast content ends. And issuing authority for executing the issuing authority in response to the request. 37. The apparatus of claim 36, wherein the authority issuing device An authority issuer for managing an authorization issuance authentication key based on a table for identifying the broadcast content and issuing the authorization issuance authentication key in response to a request for issuing the reproduction right; And And a presentation server for delivering the authorization issuance authentication key, which is provided by transferring the request for issuing the reproduction authority to the DRM authority issuer, to the broadcast viewing terminal.

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