KR20070041311A - Apparatus and method for downloading broadcasting content protection and management ipmp tool in digital broadcasting receiver - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an IPP tool download apparatus and method for protecting broadcast contents in a digital broadcast receiving terminal.

2. The technical problem to be solved by the invention

According to the present invention, when the digital broadcast receiving terminal does not have an IPMP (Intellectual Property Management and Protection) tool for processing a specific broadcast content, the MPEG-2 transport stream (TS) carrying 'protected broadcast content' is applied. Protecting / Managing Broadcast Contents at Digital Broadcast Receiving Terminals by Obtaining an IPMP Tool or Downloading the IPMP Tool from a Remote Site Using Tool Location Information (Remote Location Information) in an MPEG-2 Transport Stream (TS) Its purpose is to provide an IPM tool download device and method therefor.

3. Summary of Solution to Invention

The present invention provides an IPMP tool download apparatus for protecting / managing broadcast contents in a digital broadcast receiving terminal, wherein the IPMP for the broadcast contents is transmitted from a 'transport stream carrying protected broadcast contents' transmitted through a broadcasting network. Demultiplexing means for separating control information; Tool information extracting means for extracting, from the separated IPMP control information, installation / access information (tool related installation / access information) associated with an IPMP tool for the broadcast content; Download determination means for determining the necessity and possibility of downloading the corresponding IPMP tool by using the extracted tool related installation / access information and installation / access information (terminal related installation / access information) related to the digital broadcast receiving terminal. ; And download means for downloading and storing the corresponding IPMP tool by using the tool position information included in the transport stream if the necessity and possibility of the download are recognized by the download determination means.

4. Important uses of the invention

The present invention is used for the IPMP tool download service in the digital broadcast receiving terminal.

MPEG-2, IPMP, Broadcast Content, Digital Broadcast Receiver, IPMP Tool, IPMP Control Information, Remote Location Information, PID, Tool-related Installation / Access Information, Terminal-related Installation / Access Information

Description

Apparatus and Method for downloading Broadcasting Content Protection and Management IPMP tool in Digital Broadcasting Receiver}

1 is a structural diagram of M3W (MPEG Multimedia Middleware),

2 is a structural diagram of a component defined in the M3W standard specification;

3 is a configuration diagram of a typical MPEG-2 IPMP terminal;

4 is an explanatory diagram of an M3W component download model defined in the M3W standard standard;

5 is a component configuration diagram for downloading a component for an IPMP tool in an MPEG-2 IPMP broadcasting terminal according to the present invention;

6 is a flowchart illustrating a method of downloading an IPMP tool for protecting / managing broadcast contents in an MPEG-2 IPMP broadcasting terminal according to the present invention;

7 is a configuration diagram of an IPP tool download apparatus for protecting / managing broadcast contents in a digital broadcast receiving terminal according to the present invention.

* Explanation of symbols on the main parts of the drawings

70: MPEG-2 IPMP tool downloader 71: IPMP storage

72: tool information extraction unit 73: tool download determination unit

74: tool download section

The present invention relates to an IPM tool download apparatus and method for protecting and managing broadcast contents in a digital broadcast receiving terminal, and more particularly, to IPMP (Intellectual Property Management and Protection) required for processing specific broadcast content in a digital broadcast receiving terminal. If there is no tool, the corresponding IPMP tool can be obtained from MPEG-2 transport stream (TS) carrying 'protected broadcast content', or the tool location information (remote location information) in MPEG-2 transport stream (TS) The present invention relates to an IPP tool download apparatus and method for broadcasting content protection / management in a digital broadcast receiving terminal, by which a corresponding IPMP tool can be downloaded from a remote site.

Digital broadcasting services are based on different standards depending on the broadcasting media of terrestrial, satellite, and wired networks or regions. Currently, standardization of digital broadcasting standards centering on North America and Europe is being conducted by organizations such as Advanced Television Standard Committee (ATSC), Digital Video Broadcasting (DVB), and OpenCable. Domestic digital broadcasting service based on such standardized standard has been expanded to various media such as satellite, wired network and mobile type since terrestrial digital broadcasting started in September 2000. However, in the high quality and high quality video / audio broadcasting contents service through such media, the phenomenon in which the broadcasting contents are stored or distributed without permission is gradually increasing.

For this reason, technologies for protecting and managing digital broadcasting contents have been studied. Among them, MPEG-2 IPMP (Intellectual Property Management and Protection) has been standardized in MPEG (ISO / IEC JTC1 / SC29 / WG11). There is a technique. This technology allows the use of protected broadcast content through IPMP tools in the MPEG-2 IPMP architecture. Currently, when a digital broadcasting terminal having an MPEG-2 IPMP structure does not have an IPMP tool for processing 'protected broadcast contents' (broadcasting contents protected to prevent illegal use of broadcast contents, etc.), broadcast contents The IPMP tool is downloaded from a transport stream or a remote location that includes the update to a digital broadcasting terminal.

In addition, digital broadcasting terminals are evolving into terminal devices that perform complex functions in order to meet the increasing demands of consumers, and terminal devices that perform such complex functions are always added to the functions whenever the functions are expanded. The content must be acceptable. Accordingly, in order to expand such a function, terminal devices download corresponding function modules through a communication network or a broadcasting network and expand terminal functions accordingly.

In addition, there is a need for interoperability (compatibility), which makes it possible to reuse functions that play a similar role in software design in heterogeneous terminal devices. To this end, in relation to digital broadcasting terminals, there are standards for Advanced Common Application Platform (ACAP), Multimedia Home Platform (MHP), and OpenCable Common Application Platform (OCAP) Middleware (hardware) to handle data broadcasting services. There is a problem that reusability and interoperability are extremely limited because they use the resources directly.

 On the other hand, the digital broadcasting terminal should have a software structure that can be extended at any time. Therefore, it is desirable to design a component of software in order to maximize the function extension, reusability, and interoperability.

Therefore, it is also necessary to provide a component download method based on the M3W (MPEG Multimedia Middleware) standard, which is being standardized in MPEG (ISO / IEC JTC1 / SC29 / WG11). In addition, a digital broadcasting terminal (MPEG-2 IPMP broadcasting terminal) having an MPEG-2 IPMP structure implemented based on M3W uses information on an IPMP tool included in an MPEG-2 transport stream (TS) transmitted through a digital broadcasting network. Therefore, there is an urgent need for a technology that enables the download of an IPMP tool directly from an MPEG-2 TS or a download of an IPMP tool from a remote location.

 The present invention has been proposed to meet the above requirements, and when the digital broadcast receiving terminal does not have an IPMP tool necessary for processing a specific broadcast content, MPEG-2 transmission carrying 'protected broadcast content' In the digital broadcast receiving terminal, the corresponding IPMP tool can be obtained from the stream TS, or the corresponding IPMP tool can be downloaded from a remote location using the tool location information (remote location information) in the MPEG-2 transport stream TS. It is an object of the present invention to provide an IPP tool download apparatus for broadcasting content protection / management and a method thereof.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In order to achieve the above object, the present invention provides an IPP tool download device for protecting / managing broadcast contents in a digital broadcast receiving terminal, wherein the transport stream (TS) carries protected broadcast contents transmitted through a broadcasting network. Demultiplexing means for separating IPMP control information for the broadcast content; Tool information extracting means for extracting, from the separated IPMP control information, installation / access information (tool related installation / access information) associated with an IPMP tool for the broadcast content; Download determination for determining the necessity and possibility of downloading the corresponding IPMP tool by using the extracted tool-related installation / access information and installation / access information (terminal related installation / access information) related to the digital broadcast receiving terminal. Way; And a download means for downloading and storing the corresponding IPMP tool by using the tool position information included in the transport stream, if the necessity and possibility of the download are recognized by the download determination means.

On the other hand, the present invention, in the IP content download method for the broadcast content protection / management in the digital broadcast receiving terminal, the installation / associated with the IPMP tool for the broadcast content from the transport stream (TS) carrying the protected broadcast content A tool information extraction step of extracting connection information (tool related installation / connection information); A download determination step of determining the necessity and possibility of downloading the corresponding IPMP tool by using the extracted tool related installation / access information and installation / access information (terminal related installation / access information) related to the digital broadcast receiving terminal; And a tool download step of downloading and storing the corresponding IPMP tool by using the tool location information included in the transport stream (TS) when the necessity and possibility of the download are recognized in the download determination step.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a structural diagram of M3W (MPEG Multimedia Middleware).

First, the structure of the M3W, the purpose of M3W (MPEG Multimedia Middleware) is to improve the mobility and interoperability so that various applications can be operated in the terminal by defining an interface for multimedia content processing.

As shown in FIG. 1, the M3W interface 12 refers to an application program interface (API) provided between the computing platform 11 and the middleware (or an application) 13 and 14 and related functions. do.

In particular, the API supporting the middleware 13 is to support an interface for a functional purpose so that the video codec, the audio codec, and the renderer can be used in the application 14 or the middleware 13. Middleware that may be configured using an interface supporting a purpose may be an OpenCable Application Platform (OCAP), an Advanced Common Application Platform (ACAP), or a Multimedia Home Platform (MHP).

In the M3W-based terminal, the middleware is classified according to an application developed for a specific purpose.

On the other hand, in the M3W 12 by componentizing the function to provide a certain function and providing an interface, the application 14 can use the desired function through the interface. Hereinafter, the components used in the M3W 12 will be described in detail.

'Component' defined in M3W means a set of services that provide actual functions. These components include a service instance and a service factory.

For example, a component CStereoAmplifier provided by an SStereoAmplifier provide port may be defined as follows.

In addition, the interface of the component CStereoAmplifier is defined as follows.

The CStereoAmplifier component can be initialized or terminated through the interface defined as above, and an instance of the service factory can be obtained using the getServiceFactory interface to use the service factory included in the component. .

FIG. 2 is a structural diagram of a component defined in the M3W standard, and illustrates a structure of the component 'CSeteroAmplifier' mentioned in the description of FIG. 1.

As shown in Fig. 2, the component 'CSeteroAmplifier' 20 is composed of SStereoAmpFactory service 21 and SStereoAmp. The service 22 is included.

The RclUnKnown interface, the RclServiceFactory interface, and the SStereoAmp_Factory interface in the SSeteroAmFactory service 21 may be used in an instance of each service after the component is called.

3 is a block diagram of a typical MPEG-2 IPMP terminal.

If the MPEG-2 IPMP terminal 32 does not have an IPMP tool for processing 'protected content' (content protected to prevent illegal use of the content, etc.), the MPEG-2 IPMP terminal We will explain how to obtain and process the IPMP tool.

As shown in Fig. 3, when the 'protected content' is included in the MPEG-2 transport stream and received by the MPEG-2 IPMP terminal 32, the message defined by the MPEG-2 IPMP terminal 32 between the IPMP tools is displayed. While controlling the IPMP tool through the 'protected content' to the user through the renderer (Renderer) (324).

Here, the MPEG-2 transport stream includes not only audio / video data, which is 'protected content', but also information on how to use the content (see 30). Such content usage information is described in an IPMP Control Information Table (PMMP) and a Program Map Table (PMT) included in the PSI (Program System Information) 31.

That is, the IPMP control information 311 may send 'information about the IPMP tool' and the 'tool itself', and the IPMP descriptor in the PMT 312 may transmit the protected content to any IPMP tool. It describes how it can be handled.

First, the IPMP descriptor (IPMP Ds: IPMP Descriptor) of the PMT 312 will be described in detail. How the content is protected is described in the IPMP Descriptor in the PMT 312. The IPMP Descriptor can determine at which point (before and after Demux 321, before and after the video decoder 323, before and after the audio decoder 322, etc.) when the content is processed in the MPEG-2 IPMP terminal. It provides a control point that informs you, and the tool identifier ToolID tells you which tool to apply. In particular, depending on the location of the IPMP descriptor in the PMT 312, it is possible to know whether audio or video requires different tools or only one tool as a whole.

Next, the IPMP control information 311 will be described in detail.

IPMP Control Information describes a tool container that describes the location of the tool or remote tool that will handle the protected content, and also lists a unique ToolID (ToolID) that can identify it. List). In addition, user rights information on how protected content should be consumed by a user is contained in a right container.

In order to include IPMP control information in the MPEG-2 transport stream, the IPMP control information must exist in the PSI in the form of an IPMP Control Information Table. For this purpose, the ISO / IEC 13818-1 standard is unique. 0x03 is assigned as PID which is a packet identifier.

Finally, the IPMP tool download method in the MPEG-2 IPMP terminal as shown in FIG. 3 will be described.

If there is no IPMP tool for processing protected content in the MPEG-2 IPMP terminal, the MPEG-2 IPMP terminal downloads the corresponding IPMP tool. The method is as follows.

The MPEG-2 IPMP terminal is provided with a tool identifier (ToolID) list (ie, a tool list) of an IPMP tool to be applied to 'protected content' through the IPMP control information of the PSI. The tool manager of the MPEG-2 IPMP terminal receives a tool ID list and checks whether a corresponding tool exists in the terminal.

If there is no corresponding tool in the MPEG-2 IPMP terminal, the Tool Manager of the MPEG-2 IPMP terminal examines the tool container of the IPMP control information, and downloads and stores the corresponding tool if it exists. If there is only remote location information, the tool is downloaded and saved through the communication network.

Such a method merely describes a general and abstract procedure for a tool download method in an MPEG-2 IPMP terminal. Therefore, in order to implement the IFP tool download apparatus for component-based broadcasting content protection / management in a digital broadcasting reception terminal, a more specific and efficient download apparatus configuration considering the characteristics of the MPEG-2 transport stream carrying protected broadcast contents is required. It must be presented.

4 is an explanatory diagram for an M3W component download model defined in the M3W standard standard.

The M3W standard defines the following five roles and uses them to define the component download model. Hereinafter, the five roles defined in the M3W will be described.

(1) "Repository" represents the place where the component to be downloaded is located, and (2) "Target" represents the actual device to which the component will be downloaded. , The hardware, the operating system, or the component manager of the M3W.

And (3) "Initiator" is used to recognize the necessity of the download and to connect with other properties when starting the download process. (4) "Locator" means that the component can locate the "Target" and "Repository". It is to help you get there. (5) "Decider" is to decide whether to download the component of the tool according to various conditions. That is, "Decider" determines whether to download a component according to a condition given between "Repository" and "Target".

FIG. 4 illustrates a process in which five roles defined in the M3W component download model are performed until the "component can be downloaded" is determined, which is suggested in the standard specification.

"Repository" and "Target" deliver Component Component and Target Profile to "Decider" respectively (401, 402), and "Decider" which receives them is the component (IPMP) in the receiving terminal. To determine if a component of the tool can be downloaded. "403" represents an interaction between "Repository" or "Target" and "Decider" according to a negotiation protocol.

The download method as described above can be applied to an IP TV terminal and the like, and represents a method of allowing software to be downloaded through the Internet.

As shown in FIG. 4, in order for an MPEG-2 IPMP terminal connected to the Internet to download a software component through an Internet connection, first, a target & connection profile is obtained from "Target". "Decider" must receive (401).

Then, after knowing that the "Decider" is connected to the Internet through the Target & Connection Profile, it receives a Component & Connection Profile from the "Repository" at the remote location (402). After determining whether a component is suitable for "Target" and determining where to download it through analysis of a connection profile, the corresponding component is downloaded.

5 is a component configuration diagram for downloading a component for an IPMP tool in an MPEG-2 IPMP broadcasting terminal according to the present invention, and shows a configuration of a ComponentDownloader component. 6 is a flowchart illustrating an embodiment of a method for downloading an IPMP tool for broadcasting content protection / management in an MPEG-2 IPMP broadcasting terminal according to the present invention.

The download method as shown in FIG. 4 is applicable to an IP TV terminal, and shows a method of downloading software through the Internet. In contrast, the method illustrated in FIG. 6 may be applied to a digital broadcasting terminal based on MPEG-2 IPMP.

It is assumed that there is no IPMP tool necessary to process 'protected broadcast content' in the MPEG-2 IPMP broadcasting terminal, and the IPMP tool is transmitted together through the IPMP control information of the MPEG-2 transport stream. . In this case, the IPMP tool download software design method based on the M3W component download model according to the present invention is as follows.

In the M3W component download model, five roles are defined. When these roles are associated with the contents constituting the MPEG-2 IPMP broadcasting terminal (see FIG. 3), they are shown in Table 1 below.

 Roles in the M3W Component Download Model      MPEG-2 IPMP Broadcasting Terminal   Repository   MPEG-2 Transport Stream   Target   IPMP Terminal   Initiator   Demux   Locator   MPEG-2 Transport Stream   Deider   Tool manager

As can be seen from [Table 1], "Repository" becomes a "MPEG-2 transport stream" containing the IPMP tool itself, more precisely in terms of the receiving terminal, the MPEG-2 IPMP broadcasting terminal in the "MPEG-2" It is an arbitrary repository that receives and stores a transport stream. "Target" indicates the place where the IPMP tool is to be downloaded, and thus becomes an IPMP terminal. In addition, the 'MPEG-2 transport stream' may have a role of "Locator" because it has the IPMP tool itself or contains information on the remote location where the IPMP tool is located.

"Initiator" corresponds to 'Demux', which is responsible for separating and outputting each element of the MPEG-2 transport stream into a video stream, an audio stream, a PMT, an IPMP Control Information Table, and the like. Finally, the Tool Manager acts as a "Decider" because it makes the final decision whether or not to download the IPMP tool.

From this point of view, when designing the software of the broadcasting terminal (MPEG-2 IPMP terminal) for downloading the IPMP tool, the IPMP tool download function can be expressed as the following as the IIPMPTooldownloader service.

On the other hand, the five roles presented in the M3W component download model should provide interfaces for each role. In FIG. 5, M3W component download represents an M3WComponentDownloader component and services to be included therein.

Each service corresponds to five roles defined by the component download model. Each service function of ComponentDownloader for MPEG-2 IPMP tool download software is extended to provide an interface to perform each function.

In short, the present invention defines a ComponentDownloader component based on the component download model proposed by M3W to define services for a general download function in the component. In addition, IIPMPTooldownloader service is defined to execute MPEG-2 IPMP tool download function, and the interface provided by services defined in ComponentDownloader component is extended to define the interface for IPMP tool download.

Hereinafter, according to FIG. 6, the process of storing the IPMP tool in the target by the interaction between the five roles defined above will be described. In particular, "60" is a part showing a prominent difference from the process of FIG.

First, when "Initiator" asks "Locator" the location of an IPMP tool necessary for processing a specific "protected broadcast content" included in an MPEG-2 transport stream (TS) transmitted through a broadcasting network (601), " Locator "returns the tool identifier ToolID as a return value to" Initiator "(602). Here, when the return value is a tool ID, the MPEG-2 transport stream transmitted to the broadcasting network includes a 'tool' or 'location information of a remote location where a tool exists'. (URL) '.

The "Initiator" received the Tool ID initializes the "Repository" and the "Target" for tool download (605, 608).

During the tool download process, a secure channel must be established before communicating between the actors. This secure channel setting confirms the security status of the network where the tool is transmitted.

Before performing the initialization process in " 605 " and " 608 ", a secure channel is established in advance before performing communication between " Initiator " and " Repository " and between " Initiator " and " Target " 606, 607). Through this secure channel, "Initiator" is to initialize "Repository" and "Target".

Then, the "Repository" initialized through "605" is the tool installation information (e.g., the type of platform on which the tool can be installed) and the tool connection information (for example, the type of platform on which the tool can be installed) from the MPEG-2 transport stream (TS). PID or remote URL of the MPEG-2 TS including the tool (simply referred to as 'tool related installation / connection information') is obtained and transmitted as "Decider" in the form of a Tool & Connection Profile. (611). In this case, a secure channel is established between the "Decider" and the "Repository" in advance (609, 610).

On the other hand, "Target" initialized through "608" indicates installation information related to the target (for example, the current platform type, tool installation status, etc.) and connection information (such as a communication card that allows remote access to the tool). Information about whether communication with the outside (remote communication) is possible (simply, 'target-related installation / connection information') is transmitted in the form of target & connection profile as "Decider". (614). In this case, a secure channel is established between the "Decider" and the "Repository" beforehand (612 and 613).

Then, "Decider" uses "Tool-related installation / connection information" and "Target-related installation / connection information" to determine the "necessity and possibility of downloading a tool" (whether it is necessary to download the tool to the target). After determining whether it is necessary (or not) and whether it is possible to download it (possibility), the result of the decision is notified to "Target" and "Repository" (615, 616). Based on the 'tool installation status' of the relevant installation information, it is determined whether or not the corresponding tool is already installed.

Although not shown in the drawing, when the "Repository" receives a "determination result that the necessity and possibility of a download are recognized" from the "Decider", the "Repository" receives IPMP control information included in the MPEG-2 transport stream (TS). It checks whether the corresponding IPMP tool is included in the MPEG-2 transport stream (TS).

As a result of the check, if the corresponding IPMP tool is included in the MPEG-2 transport stream (TS), the "Repository" is downloaded from the tool container in the PSI of the MPEG-2 transport stream (TS), Save it to "Target".

If the verification indicates that the IPMP tool is not included in the MPEG-2 transport stream (TS), then the "Repository" is stored from the Tool container in the PSI of the MPEG-2 transport stream (TS). After obtaining the location information (for example, URL) ', the corresponding IPMP tool is downloaded from the remote location using the location information of the remote location and stored in "Target".

This will be described in more detail as follows.

In the case of a digital broadcast receiving terminal, a tool / connection profile is obtained from a "repository" which is a terminal storage (or MPEG-2 TS). Here, the connection profile indicates whether the digital broadcast receiving terminal can receive a tool only through a broadcasting network or obtain a tool through an internet connection. This is because the IPMP tool may be included in the MPEG-2 TS and may be transported or stored remotely.

In addition, since the Tool Profile should be compared with the Target Profile, the "Decider" receives the Target Profile & Connection Profile from the "Target" and the tool is in the digital broadcast receiving terminal. Determine if the tool can work normally. In this case, the connection profile informs whether the corresponding digital broadcast reception terminal can connect to the Internet. If the Tool is located at a remote location, if it is found that the Internet connection is not possible through the Connection Profile, the Tool is not downloaded.

If the method shown in FIG. 4 is applied to a digital broadcasting reception terminal, a tool / connection profile always exists in the MPEG-2 TS transmitted through the broadcasting network according to the IPMP standard. . Therefore, it is not necessary to first receive a target / connection profile for the Internet connection as in step 401 of FIG. 4.

Since Tool & Connection Profile must exist in MPEG-2 TS, receiving it first (performing "611" before "614") is more efficient when implementing a broadcast terminal for tool download. to be.

For example, when the digital broadcast receiving terminal receives the MPEG-2 TS, the MPEG-2 video / audio and related additional information (for example, program information, through a tuner and a demux) are received. IPMP information (including Tool & Connection Profile) and other program related information is extracted (601, 602).

Each elementary stream is transmitted to a corresponding processing unit. If there is IPMP information, this IPMP information is stored in the "Repository" (605) and also passed to "Target" (608).

Then, the "Repository" should deliver the Tool & Connection Profile to the "Decider" (611), and the "Target" delivers the Target & Connection Profile to the "Decider" (614). .

Next, " Decider " uses information transmitted through " 611 " and " 614 " to determine " necessity and possibility of tool download " (whether it is necessary to download the tool to " Target " Necessity) and whether or not download is possible (possibility).

In FIG. 4, the delivery process of the target & connection profile 401 is performed before the component & connection profile delivery process 402, which is performed in advance through the Internet connection. To obtain.

However, in the digital broadcast receiving terminal according to the present invention, since a tool / connection profile is already included in the MPEG-2 transport stream, a target / connection profile delivery process is performed. 614 need not be performed prior to the Tool & Connection Profile delivery process 611. In this case, the target / connection profile transfer process 614 is used as a reference for determining a path for downloading the tool and whether the tool can operate normally on the target. It is delivered.

7 is a configuration diagram of an IPM tool download device for protecting broadcast contents in a digital broadcast receiving terminal according to an embodiment of the present invention. FIG. 6 is a diagram illustrating a method for downloading broadcast content protection / management IPMP tools as shown in FIG. It shows the case implemented in the "digital broadcast receiving terminal" based on the correspondence of MPEG-2 IPMP terminal of Table 3 and [Table 1]. In addition, FIG. 7 shows only components related to IPMP tool download. In addition, hereinafter, the IPP tool download method for broadcasting content protection / management according to the present invention will also be described based on the IPM tool download apparatus.

As illustrated in FIG. 7, the APMP tool downloader for broadcasting content protection / management according to the present invention includes a demultiplexer 71, an IPMP storage unit 72, a tool information extractor 73, and a tool download determiner ( 74, and a tool download unit 75. Here, "72" to "75" may correspond to "tool manager" in relation to FIG. 3.

The demultiplexer 71 separates the IPMP control information for the broadcast content from the MPEG-2 transport stream carrying protected broadcast content transmitted through the broadcasting network and stores the IPMP control information in the IPMP storage unit 72. do.

Thereafter, the tool information extracting unit 73 extracts installation / access information (tool related installation / access information) related to the IPMP tool for the broadcast content from the IPMP control information stored in the IPMP storage unit 72. Here, the extracted 'tool related installation / access information' includes platform information (platform type, etc.) and tool location information on which the corresponding IPMP tool can be installed. If the corresponding IPMP tool is included in the MPEG-2 transport stream (TS) and transmitted, the tool position information is 'PID of a transport stream having the corresponding IPMP tool'. Remote location information where the tool is located.

The tool download determining unit 74 extracts the extracted 'tool related installation / access information' and 'digital room receiving terminal and related installation / access information' (simply, 'terminal related installation / access information'). Corresponds to 'Target-related Installation / Access Information') to determine the necessity and possibility of downloading the relevant IPMP tool. Here, the 'terminal related installation / access information' includes platform information (platform type, etc.) and tool installation status information of the corresponding digital broadcast receiving terminal, and the IPMP tool is not loaded on the MPEG-2 transport stream (TS). If is, the information on whether the corresponding digital broadcast receiving terminal can communicate with the outside is added.

The tool download necessity and the possibility determination method in the tool download determination unit 74 will now be described. First, when the corresponding IPMP tool is transmitted in the MPEG-2 transport stream (TS), the necessity of the download is determined using the 'tool installation status information of the digital broadcast receiving terminal', and 'the platform information on which the IPMP tool can be installed'. And 'download platform information' using the platform information of the corresponding digital broadcast receiving terminal. On the contrary, when the corresponding MPEG-2 transport stream does not include the corresponding IPMP tool and the remote location information is included, the necessity of the download is determined using the 'tool installation status information of the digital broadcasting receiver terminal' and the 'IPMP' The downloadability is determined using platform information that the tool can install, platform information of the corresponding digital broadcast receiving terminal, and whether communication with the outside is possible.

On the other hand, the tool downloader 75 downloads and stores the corresponding IPMP tool by using the tool location information included in the MPEG-2 transport stream (TS) when the necessity and possibility of the download are recognized by the tool download determiner 74. do. That is, when the IPMP tool is included in the MPEG-2 transport stream (TS) and transmitted, the tool download unit 75 uses the tool position information (PID information) to transmit the MPEG-2 transport stream (TS). For example, the IPMP tool can be extracted from the 'IPMP control information' stored in " 72 " and stored. Otherwise, if the IPMP tool is not in the MPEG-2 transport stream, the remote location information is used. Access the IPMP tool providing server, and download and save the IPMP tool from the IPMP tool providing server.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, when designing the software (IPMP tool download software applied to the broadcast receiving terminal) based on the component-based multimedia middleware standard M3W, it is possible to efficiently perform the IPMP tool download function in a digital broadcasting environment It's effective.

That is, the present invention provides an MPEG-2 transport stream (TS) transmitted through a digital broadcasting network even when there is no IPMP tool necessary for processing a specific broadcast content in a digital broadcasting terminal having an MPEG-2 IPMP structure implemented based on M3W. By using the information on the IPMP tool included in the, it is effective to download the IPMP tool directly from the MPEG-2 TS or to download the IPMP tool from a remote location.

Claims (20)

In the IPP tool download device for broadcasting content protection / management in a digital broadcasting receiving terminal, Demultiplexing means for separating IPMP control information for the broadcast content from a 'transport stream carrying protected broadcast content' transmitted through a broadcast network; Tool information extracting means for extracting, from the separated IPMP control information, installation / access information (tool related installation / access information) associated with an IPMP tool for the broadcast content; Download determination means for determining the necessity and possibility of downloading the corresponding IPMP tool by using the extracted tool related installation / access information and installation / access information (terminal related installation / access information) related to the digital broadcast receiving terminal. ; And Downloading means for downloading and storing the corresponding IPMP tool by using the tool location information included in the transport stream (TS), if the need and possibility of the download in the download determination means is recognized IPP tool download device for broadcasting content protection / management in a digital broadcast receiving terminal comprising a. The method of claim 1, The tool-related installation / connection information, IPP tool download apparatus for broadcasting content protection / management in a digital broadcast receiving terminal, characterized in that the IPMP tool includes platform information and tool position information that can be installed. The method of claim 2, The tool location information, An IPM tool download device for broadcasting content protection / management in a digital broadcast receiving terminal, characterized in that it is a PID of a transport stream having the IPMP tool. The method of claim 3, wherein The terminal-related installation / connection information, Apparatus for downloading and protecting broadcast contents in a digital broadcast receiving terminal, comprising platform information and tool installation status information of the digital broadcasting receiving terminal. The method of claim 4, wherein The download determination means, The necessity of the download is determined by using the tool installation status information of the digital broadcast receiving terminal, and the download possibility is determined using platform information that can be installed by the IPMP tool and platform information of the digital broadcast receiving terminal. IPP tool download device for broadcasting content protection / management at a receiving terminal. The method of claim 5, The download means, And an IPMP tool download apparatus for broadcasting content protection / management in a digital broadcast receiving terminal, wherein the IPMP tool is extracted and stored from the stored IPMP control information using the extracted tool position information (PID information). The method of claim 2, The tool location information, The IPP tool download device for broadcasting content protection / management in a digital broadcast receiving terminal, characterized in that the remote location information includes the IPMP tool. The method of claim 7, wherein The terminal-related installation / connection information, Apparatus for downloading and protecting the IP contents of the digital broadcasting receiver terminal, comprising platform information of the digital broadcasting receiver terminal, tool installation status information, and whether communication with the outside is possible. The method of claim 8, The download determination means, The necessity of the download is determined by using the tool installation status information of the digital broadcast receiving terminal, and the download possibility is determined by using platform information that can be installed by the IPMP tool, platform information of the digital broadcast receiving terminal, and whether communication with the outside is possible. IPP tool download device for broadcasting content protection / management in a digital broadcasting receiving terminal. The method of claim 9, The download means, The IPP tool download device for broadcasting content protection / management in a digital broadcast receiving terminal, characterized by downloading and storing the IPMP tool from the IPMP tool providing server connected using the tool location information (remote location information). In the method for downloading IPPM tool for protecting / management of broadcast contents in a digital broadcast receiving terminal, A tool information extraction step of extracting installation / access information (tool related installation / access information) related to an IPMP tool for the broadcast content from a transport stream (TS) carrying protected broadcast content; A download determination step of determining the necessity and possibility of downloading the corresponding IPMP tool by using the extracted tool related installation / access information and installation / access information (terminal related installation / access information) related to the digital broadcast receiving terminal; And If the necessity and possibility of the download is recognized in the download determination step, a tool download step of downloading and storing the corresponding IPMP tool using the tool location information included in the transport stream (TS) IPM tool download method for broadcasting content protection / management in a digital broadcast receiving terminal comprising a. The method of claim 11, The tool information extraction step, The broadcast content protection / management for the digital broadcast receiving terminal in the digital broadcast receiving terminal, characterized in that for extracting the tool-related installation / access information from the tool / connection profile included in the IPMP control information of the transport stream (TS) How to download IPMP tool. The method according to claim 11 or 12, The tool-related installation / connection information, A method for downloading IPPM tool for broadcasting content protection / management in a digital broadcast receiving terminal, comprising platform information that the IPMP tool can be installed, and PID of a transport stream in which the IPMP tool is installed. The method of claim 13, The terminal-related installation / connection information, And a platform information of the digital broadcast receiving terminal, and tool installation status information. The method of claim 14, The download decision step, The necessity of downloading is determined using the tool installation status information of the digital broadcast receiving terminal, and the download possibility is determined using platform information that can be installed by the IPMP tool and platform information of the digital broadcast receiving terminal. Method for downloading IPPM tool for broadcasting content protection / management at a receiving terminal. The method of claim 15, The tool download step, Broadcast content protection / management in a digital broadcast receiving terminal, characterized in that for extracting and storing the corresponding IPMP tool from the IPMP control information using the tool position information (PID) extracted from the IPMP control information of the transport stream (TS) How to download IPPM Tool for PC. The method according to claim 11 or 12, The tool-related installation / connection information, The IPMP tool download method for protecting and managing broadcast contents in a digital broadcast receiving terminal, characterized in that the IPMP tool includes a type of platform on which the IPMP tool can be installed, and remote location information including the IPMP tool. The method of claim 17, The terminal-related installation / connection information, Platform information of the digital broadcast receiving terminal, tool installation status information, and whether or not to communicate with the external broadcast content protection / management IPMP tool download method for a digital broadcast receiving terminal. The method of claim 18, The download decision step, The necessity of the download is determined using the tool installation status information of the digital broadcast receiving terminal, and the download possibility is determined using the platform information that can be installed by the IPMP tool, the platform information of the digital broadcast receiving terminal, and whether communication with the outside is possible. IMP tool download method for broadcasting content protection / management in a digital broadcast receiving terminal. The method of claim 19, The tool download step, In the digital broadcast receiving terminal, the IPMP tool is downloaded and stored from the IPMP tool providing server connected by using the tool position information (remote location information) extracted from the IPMP control information of the transport stream TS. How to download IPPM tool for broadcasting content protection / management.

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