WO2009122250A2 - A method and an apparatus for generating a duplication management file - Google Patents

A method and an apparatus for generating a duplication management file Download PDF

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Publication number
WO2009122250A2
WO2009122250A2 PCT/IB2009/005011 IB2009005011W WO2009122250A2 WO 2009122250 A2 WO2009122250 A2 WO 2009122250A2 IB 2009005011 W IB2009005011 W IB 2009005011W WO 2009122250 A2 WO2009122250 A2 WO 2009122250A2
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WO
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Application
Patent type
Prior art keywords
packet
information
content
program
management file
Prior art date
Application number
PCT/IB2009/005011
Other languages
French (fr)
Korean (ko)
Other versions
WO2009122250A3 (en )
Inventor
박구용
쿠마르 키란
조성현
정민규
Original Assignee
엘지전자(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/254Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541Rights Management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627Rights management associated to the content
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835Generation of protective data, e.g. certificates
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835Generation of protective data, e.g. certificates
    • H04N21/8355Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91328Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]

Abstract

The present invention relates to a method and an apparatus for generating a duplication management file. The present invention provides a method for generating a duplication management file, comprising the steps of: parsing a content packet contained in stream, and a program information packet related to the content packet; generating header information using the program information packet; and generating a duplication management file comprising the content packet and the header information, and thus it can prevent the illegal use and distribution of content of streamingly transmitted files due to illegal storage of the content.

Description

【Specification】

- the title of the invention;

Replication management file generation method and apparatus

[Technology]

The present invention relates to the management file generating replication method and an apparatus, also it relates to a content protection method and apparatus.

[Background Art]

Recently, wired / via radio provides a magnetic digital content that they hold to other users, and self by being provided digital content they do not own from other users, digital content together into multiple users free exchange / due to the realization of a system for sharing, a digital content distribution and indiscriminately. Accordingly, a DRM technologies attracting attention in a manner to block the uncontrolled distribution.

Typically, DRM is, to prevent the illegal reproduction, distribution of digital content, such as, say it all the way to protect digital copyrights. Then, the digital content will ultimately be used in various devices such as a computer, PDA, cell phone, MP3 player, a set-top box, in particular in recent years has increased as well as the computer environment rapidly for use in various portable devices.

In the DRM of the digital content, 0MA (0pen Mobi le Al l iance) and the several types of DRM methods of DRM, such as Mar l in, MS-DRM exist.

DRM technology is a concept for the protection of information from a copyright protected.

In this copyright protection is the problem was mainly caused in the video to be reproduced in particular stored in the user's PC, the prior art, by encrypting the whole of the video file for the protection of the video files stored on the user's PC then encrypted only to a legitimate user video to provide information that can be used to decrypt the file.

On the other hand, one of the most common standards used for streaming content

An MPEG-2 transport stream, a digital broadcast system such as DVB and ATSC utilize the MPEG-2 standard for mobile and terrestrial broadcast systems.

MPEG-2 is a video compression technology standardized as ISO 13818 1994 year. This is an improvement for the MPEG-1 video that require high image quality and sound quality, such as digital TV and DVD (Digital Versat i le Disk).

Alternative eungji (Rule 26) MPEG-2 transport stream to the multiplexing method using the MPEG- 2 system to be suitable for the streaming service, MPEG-2 data, taking into account the error in the network as packets of the relatively small size of 188 bytes by dividing the transmitted.

The key challenge in the MPEG-2 stream is to stream content to innovative in order to allow users to view downloaded ah get the content more comfortable, but also reveal a content protection method that allows only certain subscribers can take advantage of a particular program will be.

On the other hand, streaming (Streaming) is a technique that transmits data in real time without storing the content in the local machine to be played back. Mainly because it takes a lot of time in the case of large video content downloads, video-on-demand; it is a universal service via streaming in the same way as (VOD Video On Demand). The barrel, videos are played through streaming services than the video being played is stored on your PC solved the problem of replication by beulbeop not stored on the user's PC. However, it was also necessary protective measures for that service via streaming video while the program is being introduced onto the market that can save the videos streamed services over recent years.

[Detailed Description of the Invention]

[SUMMARY]

This invention may, with the purpose to offer the generated duplicate file management method and apparatus, and also, has its object to propose a content protection method and apparatus.

[Technical Solution]

Step of the present invention for achieving the above object is achieved by using the step, the program information packet to parse (parsing) the program information packet is related to my contain content packets and the group content packet stream to generate the header information; And it provides a replication management file generating method of generating a replication management file consisting of the content packet and the header information.

According to the present invention, the header information, and provides the replica management file generating method characterized by using the program table and the conditional access information in the table in the program information packet.

According to the present invention, the header information, and provides the replica management file generating method characterized in that it comprises a program ID and a content encryption algorithm. According to the present invention, the replication management file, characterized in that it includes a program table and a conditional access table in the program information packet in a separate area and provides a replication management file generation method.

The present invention for achieving the abovementioned objects is included in the stream contents packet and a parser for parsing a program information packet associated with the content packet, and by using the program information packet generating header information, and the Chapter generation clone that contains a generator which generates a content packet and header information management file consisting of managed file replication borough provides value.

According to the present invention, the generation unit, and provides a copy management file generating apparatus characterized in that the lead using the information in the program table and the conditional access tape block in a program information packet for generating header information.

According to the present invention, there is provided a replication management file generating apparatus, characterized in that generating the header information, the creation unit to know the program ID and the encrypted content to include the algorithm.

According to the present invention, there is provided the saengsang unit replication manager table in a separate area in the program information packet in the file and reproduction, characterized in that the conditional access table and to include the management file generating unit.

In addition, the present invention for achieving the above object, parses the program information packet associated with the inclusion of the content packet and the content packet stream, and generating the header information based on the encryption algorithm in the program information packet, wherein the content storing the replication management file is generated using the packet and the header information, and by using the reproduction permission information to Daewoong to the encryption algorithm, and provides a content protection method including the step of reproducing the stored duplication management file .

According to the present invention, the header information includes a rights issuer information and the group play rights information, and provides content protection method comprising all the steps of obtaining by using the rights issuer information.

The present invention for achieving the above object, the method comprising: receiving a command to store even one program note within multi-program stream, the content packets and the program information packet associated with the content packet including the storage in the desired stream wave washing, and the program information to the header information by using the encryption algorithm in the packet generation, storing the transformation to the replication management file consisting of the content packet and the header information, and the playback permission information corresponding to the encryption algorithm, used to, provide a content protection method including the step of reproducing the stored duplication management file. According to the present invention, the header information includes a rights issuer information and the group play rights information, and provides content protection method comprising all the steps of obtaining by using the rights issuer information.

The present invention for achieving the above object is achieved by the request for storing the multi-program stream within the note also a program, and parses the content packets and the program information packet associated with the content packet including the storage in the desired stream , a group the program information including the generated header information to all use encryption algorithm in the packet, a group contents packet and header replication that controls for conversion to a duplication management file consisting of information management agent, and a storage unit for storing the replication management file It provides the content protection apparatus.

According to the present invention, the replication management agent, a second agent that is controlled so as to generate a content packet, and the first agent and the replication management file parsing (parsing) the program information packet associated with the content packet included in the stream, and stores It provides content protection device comprising a.

[Advantageous Effects]

According to the invention, by creating a file replication management to come, it is possible to prevent the illegal use and distribution of content via streaming illegal storage of transfer files.

[Brief description of drawings]

Figure 1 illustrates one embodiment of the replica management file generation device according to the present invention. 2 and Fig. 3 is a illustrates a MPEG-2 transport stream packet.

4 shows an apparatus for creating a replication management file of the transport stream MPEG-2.

5 is a diagram showing the configuration of the replica management file of the transport stream MPEG-2.

Figure 6 shows an additional text information in the header file is DRM technology.

Figure 7 illustrates a content protection system is including a duplication controlling agent for controlling so that the transformation to the replication management file.

[Best Mode for Carrying Out the Invention] The present invention using the steps of: parsing (parsing) the program information packet associated with the content packet and the content packet included in the stream, the program information packet generating header information , and it provides the replica management file generating method of generating a replication management file consisting of the content packet and the header information.

The present invention is replication consisting of parsing unit, and the content packet and a header information generating an open header information take advantage of the program information packet, and for parsing a program information packet associated with the inclusion of the content packet and the content packet stream It provides a replication management file generating apparatus including a generator which generates a management file.

In addition, the present invention parses the program information packet associated with the content packet and the content packet included in the stream, generates header information by using the encryption algorithm in the program information packet, by using the content packet and the header information, generated storing the replication management file, and using the playback permission information to Daewoong to the encryption algorithm, and provides a step for reproducing the stored file to the content-duplication management protection.

In addition, the present invention comprises the steps of: receiving the commands to store the multi-program stream within the at least one program, and parses the contents packet and all the program information packet associated with the content packet including the storage in the desired stream, the program information L generating the header information based on the encryption algorithm in the ¾, storing the transformation to the replication management file consisting of the content packet and the header information, and by using the reproduction permission information corresponding to the encryption algorithm, the stored replicated management It provides content protection method comprising: playback files.

Further, in the present invention is a multi-program stream within at least stores one of the program and is the program information to parse the program information packet associated with the content packet and the Content-packet contained in the desired, the storage by the requirements on the stream, packet using an encryption algorithm to generate header information, store provides the content protection apparatus includes a storing a replication management agent, and wherein the replication management file control to transition from the duplication management file with the content packet and the header information, .

[Mode for Carrying out the invention]

Hereinafter, it will be described in detail preferred embodiments of the invention with reference to the accompanying drawings. Prior to this, the specification and the terms or words used in the claims is commonly a or is not to be construed in a dictionary meanings, the inventors define as appropriate for the concept of a term to describe his own invention in the most current line method to the mouth of each can that principle be interpreted based on the meanings and concepts corresponding to technical aspects of the present invention. Thus, embodiments the configuration shown in the examples and figures disclosed herein are therefore not mean that represent all of the technical features of the present merely nothing but the most preferred han one embodiment of the present invention invention can be made thereto according to the present application point that it should be understood that various equivalents and modifications could be.

Figure 1 illustrates one embodiment of the replica management file generation device according to the present invention. The present invention is applied all-duplication management file generating unit 100, as shown in Figure 1 includes a parsing unit 110, a generator 120.

The generating unit 120 generates header information by using the program information packet, and the parsing unit 110 parses the associated program information packet in the content packet and the content packet included in the stream, and the content It produces a replication management file consists of header and packet information.

The generation section 120, and generates header information based on the information in the program information, the program table and the conditional access tape block in the packet, and generates header information that includes a program ID and a content encryption algorithm, reproduction management file in a separate area it can be to include a program table and a conditional access table in the program information packet.

Hereinafter, the present invention but as an example MPEG-2 transport stream, the invention is not limited to this.

2 and Fig. 3 is a MPEG-2 transport stream packet shown ol.

As shown in Figure 2, MPEG-2 transport stream packet includes a de of a header and a payload, and its size is fixed at 188 bytes, and length of the header 4, the length of bytes, and the payload is 184 bytes to be.

As shown in Figure 3, MPEG-2 transport stream may contain multiple programs, some programs may be encrypted to protect the content from unauthorized access. MPEG-2 header of the transport stream includes a packet identification number or the program identification information of 32 bits. Users using the the packet identification program rules Information (PSI; Program Specific Informat ion) ot be able to search for the program rules Information Programs related tables (PAT; Program Association Table), a program map table (PMT; Program It consists of a conditional access table); Map table), and the conditional access table (CAT.

The program-related table packet identification number is zero, the packet of each program number as the specific information that is transmitted by the (16-bit) for each program in the structure identification packet of the transport stream L ¾ transmitting a program map table describing the element number kigo point a, the program map table, and describes a packet identification number less agent and accessory information of the transport packet being transmitted the individual bit streams including video and audio constituting a program identification number and a program, the conditional access table is decoded a necessary accessory table in order to ensure that only authorized users gun a bit stream scrambled to put a limit of play decoded, can not play.

Find out the identity, including the actual decryption, decoding permission information of a packet number from the table to obtain the decryption information. All of the program-specific table, the program map table and conditional access table is required to extract information from a plurality of program streams multiplexed.

The conditional access table Rights Management Message (EMM; Entitlement Management Message), and the rights control message; specifies the information to retrieve the authorization message, such as (ECM Entitlement Control Message), and the authorization management messages and access control message is "EMM_Stream" and L ¾ elementary stream having a stream ID designated by "ECM_Stream ''; are embedded within a (i zed PES packet Elementary stream) packet.

4 shows an apparatus for creating a replication management file of the transport stream MPEG-2, in particular, shows a device for generating a replication management file is DRM technology. 4, the import agents and parses the program information packet associated with the content packet and the content packets contained within an MPEG-2 transport stream, DRM agent is a DRM technology is applied by using the program information packet to create a file.

Figure 5 represents the configuration of said replication management file on the MPEG- 2 transport stream, in particular, it shows the configuration of the replica management file is DRM technology.

As shown in Figure 5, the replication management file contents packet (520) and is composed of header information, and specifies the header information 510, the rights object to the suppliers URL, content ID, the audio format of the replication management file Now, the video format specifier, an audio program ID, the video program ID, a content encryption algorithm, including a mIME type, the replication management file the program table and the conditional access table, a separate area in the information L ¾ (530) It includes.

On the other hand, wherein the header information further includes additional information on the content, and the additional information includes text information Daewoong in the header information, the replication management file describes additional text header information, and audio and video content audio and video descriptor field may further include information about (descriptor field), bit rate, and encryption algorithms.

Figure 6 shows an additional text information in the header file is DRM technology.

6, a text header 610 would have to exist in the current OMA DRM standard, header text, except this are those additionally added.

MPEG-2 transport stream of the present invention may be received via the IPTV receiving device or a predetermined setrop boxes, and the like.

Figure 7 illustrates a content protection system is including a duplication controlling agent for controlling so that the transformation to the replication management file.

7, the receiver module receives the command and the content requiring the storage of a particular program in the multi-program stream to transport the transport stream decoder, and replication management agent contending contained within the desired stream to said storage tsu parse the packet and the program information packet associated with the content packet, and generates the header information by using the encryption algorithm in the program information packet, and control to transition from the duplication management file consisting of the content-packet header information, DRM file recorder is receiving and the replication management file converted from the agent stores Content-in file.

As it described above, reproduction management file generating apparatus to which the present invention is applied is provided with the multimedia broadcast transmitter / receiver can be used to create a duplicate management file. In addition, the multimedia broadcast transmitter / receiver can include a mobile communication terminal. Above, a preferred embodiment of the present invention described above is, as disclosed for illustrative purposes, those skilled in the art within the spirit and the technical scope of the invention as set forth in the claims hereinafter appended, improve the various other embodiments, changes this will be possible, replace or add, etc.

Claims

[Claims]
11. The
Further comprising: a program information packet parsing all related to the content contained within the packet and the packet content stream (par sing);
Generating a header information by using the program information packet; And reproduction management file generating method comprising the steps of generating replication management file consisting of all the content packets and the header information.
[Claim 2]
According to claim 1,
Wherein the header information, reproduction management file generating method, characterized in that is generated by using the program information table and the conditional access table information in said program information packet.
[Claim 3]
According to claim 1,
Wherein the header information, reproduction management file generating method characterized in that it comprises a program ID and a content encryption algorithm.J
[Claim 4]
According to claim 1,
The replication management file, reproduction management file generating method comprising the program table and the conditional access table in the program information packet into a separate domain.
[5.]
It contained within the packet, and streams the content parsing unit which parses the program information packet associated with the content packet; And
Replication management file generating apparatus comprising generating header information by using the program information packet, and a generator which generates the replica management file consisting of the content packet and the header information.
[Claim 6]
6. The method of claim 5,
The generator comprises program information and a program information table conditional access table information, and characterized by the replication management file generating unit to generate the header information used in the packet.
[7.]
6. The method of claim 5,
Replication management file generating apparatus, characterized in that the header information is generated, including the program ID and a content encryption algorithm.
[8.]
6. The method of claim 5,
Replication management file generating apparatus as geotol characterized in that the generation unit, such that in a separate area in the replication management file including the program information packet in the program information table and the conditional access table information.
[9.]
Parsing a program information packet associated with the inclusion of the content packet and the content packet stream, the program information generates the header information by using the encryption algorithm in the L ¾ and replication management is generated by using the content packet and the header information file storing; And
By using the reproduction permission information to Daewoong to the encryption algorithm, the content protection method comprising the steps of: reproducing the replica management file.
[10.]
10. The method of claim 9,
The header information includes the reproduction permission information, includes a rights issuer information, content protection method, characterized in that obtained by using the rights issuer information.
[Claim 111
Multi-program stream can be within the instruction storing at least one program step is subject;
The step of parsing a program information packet associated with the content packet and the content stored in the packet including the desired stream;
Generating a header information by using the encryption algorithm in the program information packet;
Storing the transformation to the replication management file consisting of the stream to the desired storage in the content packet and the header information; And a content protection method comprising the step of using the reproduction permission information corresponding to the encryption algorithm, and reproducing the replica management file.
[Claim 12]
12. The method of claim 11,
The header information includes the reproduction permission information, includes a rights issuer information, content protection method, characterized in that obtained by using the rights issuer information.
[Claim 13]
Multi-program stream within at least upon a request to store a program, a contents packet including said stored within the desired stream and parses the program information packet associated with the content packet using the encryption algorithm in the program information packet header information generate and transfer the stream to the desired save the replication management for controlling the content to be converted into packets and replication management file consisting of the header information
E · J m
- -,
Kern content protection apparatus comprising: a storage for storing the duplication management file.
[Claim 14]
14. The method of claim 13,
The replication management agent, the first agent is to parse the content packets and the program information packet associated with the content packet included in the stream;
Content protection device comprising a second agent that is controlled to produce said replication management file and save.
PCT/IB2009/005011 2008-02-26 2009-02-26 A method and an apparatus for generating a duplication management file WO2009122250A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US3136408 true 2008-02-26 2008-02-26
US61/031,364 2008-02-26

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WO2009122250A3 true WO2009122250A3 (en) 2009-12-17

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Country Status (1)

Country Link
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040093337A1 (en) * 2001-08-09 2004-05-13 Shen Sheng Mei Unified rights management for ipmp system
EP1564622A2 (en) * 2004-02-13 2005-08-17 Microsoft Corporation Conditional access to digital rights management conversion
US20070124602A1 (en) * 2003-06-17 2007-05-31 Stephanie Wald Multimedia storage and access protocol
US20070294170A1 (en) * 2006-06-02 2007-12-20 Luc Vantalon Systems and methods for conditional access and digital rights management

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040093337A1 (en) * 2001-08-09 2004-05-13 Shen Sheng Mei Unified rights management for ipmp system
US20070124602A1 (en) * 2003-06-17 2007-05-31 Stephanie Wald Multimedia storage and access protocol
EP1564622A2 (en) * 2004-02-13 2005-08-17 Microsoft Corporation Conditional access to digital rights management conversion
US20070294170A1 (en) * 2006-06-02 2007-12-20 Luc Vantalon Systems and methods for conditional access and digital rights management

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