WO2005071960A1 - ストリーミング・システム - Google Patents
ストリーミング・システム Download PDFInfo
- Publication number
- WO2005071960A1 WO2005071960A1 PCT/JP2004/017602 JP2004017602W WO2005071960A1 WO 2005071960 A1 WO2005071960 A1 WO 2005071960A1 JP 2004017602 W JP2004017602 W JP 2004017602W WO 2005071960 A1 WO2005071960 A1 WO 2005071960A1
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- WO
- WIPO (PCT)
- Prior art keywords
- media
- session
- ipmp
- stream
- management information
- Prior art date
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- 238000000034 method Methods 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 12
- NTOPKICPEQUPPH-UHFFFAOYSA-N IPMP Natural products COC1=NC=CN=C1C(C)C NTOPKICPEQUPPH-UHFFFAOYSA-N 0.000 claims 22
- 238000007726 management method Methods 0.000 description 28
- 230000003044 adaptive effect Effects 0.000 description 23
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 238000000547 structure data Methods 0.000 description 5
- 239000000284 extract Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008520 organization Effects 0.000 description 3
- AYUNIORJHRXIBJ-HTLBVUBBSA-N [(3r,5s,6r,7s,8e,10s,11s,12e,14e)-6-hydroxy-5,11-dimethoxy-3,7,9,15-tetramethyl-16,20,22-trioxo-21-(prop-2-enylamino)-17-azabicyclo[16.3.1]docosa-1(21),8,12,14,18-pentaen-10-yl] carbamate Chemical compound N1C(=O)\C(C)=C\C=C\[C@H](OC)[C@@H](OC(N)=O)\C(C)=C\[C@H](C)[C@@H](O)[C@@H](OC)C[C@H](C)CC2=C(NCC=C)C(=O)C=C1C2=O AYUNIORJHRXIBJ-HTLBVUBBSA-N 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
- H04N21/83555—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed using a structured language for describing usage rules of the content, e.g. REL
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
Definitions
- the present invention relates to digital rights management (DRM) or intellectual property management and protection (IPMP) for general streaming 'content protection.
- DRM digital rights management
- IPMP intellectual property management and protection
- ISMA Internet 'Streaming' Media 'Alliance
- the organization addresses this need by specifying an existing framework-based framework that vendors can use to build interoperable video and audio systems that can be used on the IP framework and the Internet. They are trying to respond.
- the organization also specifies an encryption framework for ISMA media 'streams, namely ISMACryp.
- the organization currently specifies default methods for media 'stream encryption and media message authentication for fmtp notification of ISMA specifications and IS MACryp parameters.
- Figure 1 shows the architectural diagram of ISMACrpt protection for the ISMA framework.
- IPMP IP Multimedia Subsystem
- An IPMP tool is a module that performs one or more IPMP functions, such as authentication, decryption, and watermarking.
- IPMP allows tools to be downloaded and tools can be read from remote sites and updated adaptively.
- IPMP also allows the terminal to choose its preferred tool according to the parameter description.
- IPMP terminals also combine several tools to form a set of tools (acting like a single tool), according to some parameter integration.
- Figure 2 shows the general architecture of MPEG IPMP protection.
- the MPEG IPMP framework is defined within the MPEG-2 / 4 system, which is not necessarily used for multimedia 'streaming transmissions, to enable flexible protection schemes.
- FIG. 5 is a diagram showing a layer structure in conventional MPEG-4 streaming.
- network 'Layer 10' such as Internet Protocol (IP), session 'Layer 20 such as RTSP (especially session' Description 'Protocol (SDP)), system' Layer 30 such as MPEG-4 system ' It has a layer structure composed of layers such as MPEG-4 video, Z audio 41, 42 and the like.
- IPMP information such as IPMP Tool List 31 and IPMP Descriptor 32 related to the protection of MPEG-4 video / audio content of the media stream is described in the MPEG-4 system, which is layer 30 of the system.
- the present invention is intended to solve the following problems.
- MPEG IPMP provides adaptive protection notifications within MPEG-2Z4 systems.
- Fig. 2 shows the MPEG-2 IPMP content structure
- Fig. 3 shows the MPEG-4 IPMP extension content structure.
- adaptive protection notifications do not exist for media 'streaming that does not utilize the MPEG-2Z4 system, eg, ISM streaming. for that reason, If the MPEG-4 system in Fig. 5 cannot be used, the ISMA receiver cannot obtain IPMP information related to content protection! /, So the content protected by the IPMP tool cannot be used.
- An object of the present invention is to provide multimedia, which is widely used as described above, in a streaming environment, in particular, multimedia using session notification, session guidance, and other methods.
- SDP Session Description Protocol
- a streaming system includes a server that transmits a media stream having a layer structure including at least a session layer via a network, and the server also receives the media stream via the network.
- the server comprises:
- SDP media 'stream session' layer session 'description' protocol
- the client The client,
- the received session description 'protocol capability extracts the management information Means
- the management information may be an IPMP tool list or an IPMP descriptor related to an IPMP tool used for protecting the media 'stream.
- the means for managing the media 'stream of the client can specify the IPMP tool based on the extracted IPMP tool list or IPMP descriptor, and manage the media' stream.
- the management information may be right information of the media 'stream. This right information includes media 'stream usage right information.
- the management information is stored in a session level attribute or a media level attribute of the SDP.
- the management information is stored in the session level attribute, all media 'streams can be managed. Also, when stored in the management information media level attribute, the associated media 'stream can be managed.
- IPMP descriptor Tool structures or other types of IPMP data may be stored in the IPMP descriptor.
- SDP which is the session 'layer
- the client on the receiving side is notified that this media' stream is under the management of the IPMP tool described in the IPMP descriptor.
- the range of the target media stream differs depending on whether the IPMP descriptor is stored in the session level attribute or whether it is stored in the media level attribute.
- the usage right information of the right information may be stored in an IPMP right container.
- this IPMP rights container is described in the SDP.
- the receiving client is notified that the media's stream is under the management of the described usage rule.
- the IPMP rights container is stored in the session level attribute.
- the usage right information of the right information may be stored in IPMP right data.
- This IPMP rights data may be stored in the IPMP descriptor as a type of IPMP data! /. This indicates that the media stream is under the control of the described terms and conditions.
- IPMP descriptor When the IPMP descriptor is stored in the session level attribute of the SDP, all media 'streams in the current session are under the management of the usage rule described in the usage right information. On the other hand, if the IPMP descriptor is stored in the media level attribute of the SDP, the associated media 'stream is under the management of the usage agreement described in the usage right information.
- the client reads the IPMP tool list from the session level attribute of the SDP, and checks the IPMP tool indicated in the IPMP tool list. Then, on the receiving client, confirm that all IPMP tools exist, and if not, stop reading the IPMP tools from the server via the network or stop playing the media stream.
- the client also reads the IPMP descriptor from the SDP, and receives notification that the media 'stream is under the control of the IPMP tool described in the IPMP descriptor.
- the client may configure or initialize the IPMP tool using the tool structure data stored in the IPMP descriptor, or may use the IPMP descriptor to store or initialize the IPMP tool using other types of data stored in the IPMP descriptor. You can help the process!
- IPMP descriptor When the IPMP descriptor is read out from the session level attribute of the SDP, all media streams in the current session are under the management of the IPMP tool described in the IPMP descriptor. On the other hand, if the IPMP descriptor is read out of the media level attribute of the SDP, the associated media stream is under the control of the IPMP tool described in the IPMP descriptor.
- the IPMP rights container is read from the session level attribute of the SDP, and further, the IPMP rights container power usage right information is read.
- the client can use this usage right information to manage all media streams in the current session.
- the client reads the SDP IPMP descriptor, and reads out usage right information from the IPMP descriptor.
- the client can manage the media stream using the usage right information.
- the IPMP descriptor When the IPMP descriptor is read out from the session level attribute of the SDP, the current All media 'streams in a row session are under the control of the usage agreement described in the usage rights information. On the other hand, if the IPMP descriptor also reads the media level attribute of the SDP, the associated media 'stream is under the control of the usage rules described in the usage right information.
- the present invention provides a means for signaling adaptive IPMP (DRM) protection using SDP by mandating rights expression information in the actual media 'stream.
- DRM adaptive IPMP
- Digital rights information can also be prescriptively stored in the SDP attributes defined above.
- Rights information may be in various formats, such as MPEG-21 REL (Rights Representation Language), ODRL (Open Digital Rights Language).
- the protection is notified using the IPMP tool list and the IPMP descriptor in the SDP attribute described above.
- This method is compatible with the latest MPEG-2Z4IPMP extension standard. It also provides a flexible way to identify the IPMP protection tools needed to play streaming 'content.
- an IPMP tool list is constructed based on the type of tool used to protect the Streaming' media.
- the concept of the tool list is derived from MPEG-2Z4IPMP shown in 2.1 and 3.1 in the figure. Here, no MPEG-2Z4 system exists! Under some circumstances, the tool list is stored at the entire session level in the SDP attribute “ipmp-control” defined as “/”.
- the server will transfer the rights information to the IPMP rights container. Can be inserted.
- the rights information is also stored in the “ipmp-control” attribute.
- the rights container is stored in PSI (Program Specific Information) (2.2), and in SDP, the "ipmp-control" attribute is used instead of the PSI of the MPEG-2 system.
- An IPMP descriptor is also configured based on which tool protects a particular stream. .
- the IPMP descriptor can be stored in various places in MPEG-2Z4 as shown in 2.3 and 3.3 in the figure.
- the IPMP descriptor is embedded in the SDP attribute “ipmp-d” defined for each specific media level or session level to notify tool protection! /.
- IPMP descriptors can also store IPMP data derived from any type of IPMP—Data—BaseClass, including, but not limited to, tool structure, usage rights information, etc. Not done.
- the SDP can be conveyed to the receiving side using various transfer protocols such as RTSP.
- the receiving client analyzes the two specified IPMP-related attributes, ie, “ipmp-controllj” and “ipmp-d”.
- the receiving side recognizes that the IPMP protection is implemented throughout the session. Before playing the media stream in the session, the receiver confirms that all the tools registered in the tool list are available on the terminal side, and if not available, downloads the tools from the specified URL. get.
- the receiver will be able to detect the ⁇ in the current session. Deer's stream power Recognizes that it is under the control of a designated digital right, in which case appropriate rights protection measures are preferably taken.
- the receiving side can recognize which tool is used to protect all the streams. While playing the stream, the receiver can invoke the specified IPMP tool at the specified time and location for all session streams.
- the receiver can recognize which stream is protected by which tool.
- the receiver can invoke the specified IPMP tool at the specified time and location for the specified stream.
- Tool initialization parameters can be stored in the IPMP descriptor, so that they are actually used You can set up the tool before.
- Usage rights information is also stored in the IPMP descriptor and can describe unique usage rules associated with a particular media 'stream.
- FIG. 1 is a diagram showing an ISMACryp architecture.
- FIG. 2 is a diagram showing an MPEG-2 IPMP extended content structure.
- FIG. 3 is a diagram showing an MPEG-4 IPMP extended content structure.
- FIG. 4 is a diagram showing an IPMP protection notification using an SDP attribute.
- FIG. 5 is a diagram showing a layer structure of a conventional MPEG-4 stream.
- FIG. 6 is a diagram showing a layer structure of an MPEG-4 stream in the media stream transmitting / receiving system of the present invention.
- FIG. 7 is a flowchart of a method in which a server stores information on an IPMP tool in a media 'stream session' 'description' protocol and transmits the information to a client.
- FIG. 8 is a flowchart of a method for receiving a media 'stream including a session' description 'protocol storing information on an IPMP tool at a client and managing the media' stream.
- FIG. 9 is a flowchart of a method in which a server stores rights information in a media “stream session” description “protocol” and transmits it to a client.
- FIG. 10 is a flowchart of a method of receiving a media 'stream including a session' description 'protocol storing rights information at a client and managing the media' stream.
- FIG. 6 is a diagram showing a layer structure of MPEG-4 streaming in the streaming system according to the embodiment of the present invention.
- This streaming has a layer structure including at least a session layer.
- a network layer 10 such as the Internet Protocol (IP), RTSP (especially a session 'description' protocol (SD p. )), Etc. It has a layer structure consisting of layer 20, MPEG-4 video, Z audio 41, 42, etc., and other content 43 transmitting content 43.
- IP Internet Protocol
- RTSP especially a session 'description' protocol (SD p. )
- Etc has a layer structure consisting of layer 20, MPEG-4 video, Z audio 41, 42, etc., and other content 43 transmitting content 43.
- the same session includes one media 'stream, but is not limited to this.
- the same session may include a plurality of media' streams.
- an IP such as an IPMP tool list 21 or an IPMP descriptor 22 for protecting MPEG-4 video / audio content of a media stream is used.
- the MP information is described in session 'description' protocol (SDP) which is session 'layer 20'.
- SDP session 'description' protocol
- right information such as usage right information of the content carried in the media stream may be described in the SDP.
- the IPMP information and the rights information are management information for managing the media 'stream (content). That is, in the streaming 'system of the present invention, management information such as IPMP information and right information is described in the session' layer 20 SDP.
- the streaming receiver can extract management information such as IPMP information and rights information from the SDP even if it is a client. Can be managed. It should be noted that management information such as IPMP information and rights information can be stored in the SDP in the session level attribute of all media 'streams or the media level attribute of associated specific media' streams in the same session.
- the streaming 'system includes a server that transmits a media stream having a layer structure including at least a session layer via a network, and a client that receives the media stream from the server via the network.
- the server stores the management information for managing the content carried in the media 'stream' in the streaming session 'layer session' 'description' protocol (SDP), and stores the management information in the session 'layer.
- the client has means for receiving the SDP storing the management information from Sano, means for extracting the management information from the received SDP, and means for managing the media stream based on the extracted management information. .
- FIG. 7 is a flowchart of a method of storing information on an IPMP tool in a streaming session 'description' protocol (SDP) in a server and transmitting the information to a client.
- SDP streaming session 'description' protocol
- IPMP tool list 21 or the IPMP descriptor 22 relating to the IPMP tool of the content carried in the media stream is incorporated into the SDP of the layer 20 (S01).
- the IPMP information of the IPMP tool list or IPMP descriptor can be stored in the session level attribute or media level attribute of SDP as shown in FIG.
- IPMP information Stores IPMP information in session-level attributes.
- the IPMP information is stored in the associated media level attribute.
- the SDP including the IPMP tool list 21 or the IPMP descriptor 22 is transmitted to the client at the streaming session layer 20 (S02).
- FIG. 8 is a flowchart of a method for managing a media stream by receiving streaming containing a session 'description' protocol (SDP) storing information on an IPMP tool at a client.
- SDP session 'description' protocol
- An SDP including an IPMP tool list 21 or an IPMP descriptor 22 relating to an IPMP tool for content carried in a media stream is received from a server at a streaming session 'layer 20 (S11).
- the IPMP information such as the IPMP Tool List 21 and the IPMP Descriptor 22 relating to the protection of MPEG-4 video and Z audio contents 41 and 42 is transmitted to the session "layer 20 session” description "protocol. (SDP). Therefore, even if the receiver side does not use the MPEG-4 system! Even in such a case, IPMP information such as the IPMP tool list 21 and the IPMP descriptor 22 can be extracted from the SDP, and the IPMP tool can be identified using these. , Content can be managed.
- SDP session "layer 20 session” description "protocol.
- IPMP information is stored in the session level attribute or media level attribute of SDP. Is done. When IPMP information is stored in the session level attribute, all media 'streams in the same session can be managed. Also, when stored in the IPMP information media level attribute, the associated media stream can be managed.
- FIG. 9 is a flowchart of a method of storing rights information in a streaming session 'description' protocol in a server and transmitting the rights information to a client.
- the SDP including the rights information is transmitted to the client at the streaming session 'layer 20 (S22).
- MPEG-4 video / audio content is transmitted to the client in streaming content / layer 40 (S23).
- FIG. 10 is a flowchart of a method of managing a media stream by receiving streaming containing a session 'description' protocol incorporating rights information at a client.
- the rights information such as the usage right information of the MPEG-4 video Z audio contents 41 and 42 is described in the session “layer 20 session“ description ”protocol (SDP). Therefore, even when the receiver side does not use the MPEG-4 system, it is possible to extract right information such as usage right information from the SDP and manage the content using these.
- SDP session “layer 20 session“ description ”protocol
- the rights information is embedded in the session level attribute or media level attribute of SDP. I will. If the rights information is embedded in the session level attribute, all media 'streams in the same session can be managed. Also, when the right information is embedded in the media level attribute, the associated media 'stream can be managed.
- Session 'description' protocol is a format exclusively for session description, does not include transport protocols, and includes Session Notification Protocol (SAP), Session Initiation Protocol (SIP), Real-Time Streaming Protocol (RTSP), It is assumed that e-mail using MIME extensions and various transport protocols, including Hypertext Transfer Protocol (HTTP), will be used as appropriate.
- SAP Session Notification Protocol
- SIP Session Initiation Protocol
- RTSP Real-Time Streaming Protocol
- HTTP Hypertext Transfer Protocol
- the SDP is a means for notifying the existence of a session and storing sufficient information for participating in the session.
- Media information, timing information, and any other information can be described in the SDP and distributed using other transfer protocols.
- the session description consists of a session-level description (fits the entire session and all media 'streams) and optionally several media-level descriptions (fits a single media' stream). .
- the session level value is the default for all media unless overridden by the same media level value.
- media level attributes add information on the media 'stream.
- An attribute field may be added before the first media 'field.
- the “session level” attribute stores additional information that applies to the streaming layer in general, not to individual media.
- FIG. 4 shows a general architecture diagram of adaptive IP MP notification in SDP.
- Module 4.1 shows the session level section, and 4.2 shows the media level section.
- the sender needs to inform the receiver that a general SDP attribute (the attribute placed before the “media” line at the session level) includes the IPMP control information session. It takes the form of the following attribute line (4.3 in Figure 4).
- control data is an optional attribute in the RTSP session. If the above attribute line is provided,! /, Na! /, IPMP control information is read through the RTSP session by using DESCRIBE together with the type of applicationZipmp-control and accepting the former. If the SDP information is provided by some other means (eg as a file in SAP), control data is mandatory. control data must be a double quoted URL and provide IPMP control information (eg, a small one with "da taj, otherwise" http "or other appropriate file access URL Can be encoded using;)). The actual IPMP control information is specified in the following subsections and includes the IPMP Tool List followed by a Rights Container.
- IPMP Tool List class contains a list of IPMP tools. This is used to specify all IPMP tools used to play the content. [0063] [Table 1]
- Length The number of bytes of the class, which also starts immediately after the "Length" field.
- -NumTools The 16-bit field indicates how many kinds of tools are specified in the IPMP tool list class.
- IPMPTool—Info This class stores information about a tool, such as a tool ID and an alternative tool. This is defined as follows:
- IPMPTool—Info—Class contains information for a logical IPMP Tool needed by the device.
- the logic tool can be one of the following!
- IPMP Vendor-specific IPMP tool specified by ToolID
- Each IPMPTool—Info—Class identifies one IPMP Tool that the terminal needs to use the content.
- the tool can be uniquely implemented as one of a list of alternative tools, or can be specified by parameter description.
- IPMP—ToolID is in a range reserved for IPMP tool-specific implementations and points directly to the requested tool.
- IPMP—ToolID serves as a content-specific abstract representation for the IPMP Tool ID. , Depending on the implementation of the given content part at the given time on the terminal side.
- the parameter description is indicated by setting the isParametric field to "1".
- the terminal selects an IPMP tool that satisfies the criteria specified in the following parameter description.
- the IPMP—ToolID is in the range reserved for the parameter tool or alternative tool.
- the tool selected by the terminal implementation to satisfy this parameter description The actual IPMP tool ID is known only to the terminal! All content and other tools will reference the tool for that content via the specified IPMP-ToolID.
- Length The number of bytes of the class, which also starts immediately after the "Length" field.
- IPMP — ToolID IPMP tool identifier
- IPMP-Tool contains a list of alternative IPMP tools.
- IPMP Numberer of alternative IPMP tools specified in Tool.
- ID ID of a specific alternative IPMP identifier that can authorize use of the content.
- IPMP — Tool contains parameter descriptions for IPMP tools!
- IPMP-ToolID is an identifier for the IPMP tool described in the parameter, and the terminal transfers the information specified in the IPMP-ToolID bit stream to a specific IPMP tool instantiated by the terminal.
- IPMP ParametricDescription: IPMP parameter description as specified in the following section.
- ToolURL An array of numURL URLs containing information that can be obtained by one or more tools specified in the class.
- Content 'providers can use parameter descriptions instead of fixed tool IDs to describe here what type of IPMP tool is needed to play the content. For example, content 'providers block-size to decrypt video' streams. AES tools that require 128 bits can be specified. If the IPMP terminal receives such a description specifying the tool in question, it can select a neutral optimized AES tool for the embedded tool.
- decryption AES, DES, NESSIE, etc.
- the parameter description is defined so that any type of IPMP tool can be generally described regardless of the type of tool.
- -class The class of the parameterized tool (eg, decryption).
- TypeData A specific type of data (eg, Block length) to describe a specific type of tool to further specify the AES decryption tool.
- addedData Any additional data that helps describe the tool specified by the parameter in more detail.
- the IPMP Tool Identifier is 128 bits long and platform independent, including a unique identification number for the IPMP Tool. This requires the use of a unique ID and a registrar for the IP MP tool (such a registrar is specified in the MPEG). It manages download URL associations to implement the tool in various ways. These platforms are described in sufficient detail using Structural Expressions.
- the IPMP Tool ID is a unique IPM unless it is in the reserved area of the parameterized or replacement tool. Identify P tools. Certain values in the 128-bit space are reserved for nomometer tools, bitstreams, terminals, and other special addresses. These values are not assigned to registered Tounolle,.
- the IPMP Rights Container class stores usage rules and states associated with IPMP protected content.
- Length The number of bytes of the class, which also starts immediately after the "Length" field.
- descriptor-data is an optional attribute in the RTSP session. If the above attribute line is provided, then the IPMP descriptor is read via the RTSP session by using DESCRIBE with the type of application / ipmp-d and accepting the former. If the SDP information is provided by some other means (eg, as a file in SAP), descripion—data is mandatory. description—data must be a URL enclosed in double quotes and provide IPMP control information (eg, "data" for small, "http” for other, or other appropriate file access It can be encoded using a URL.) O The actual IPMP descriptor is specified in the following subsections
- IPMP descriptor indicates that the associated media 'stream is described in the IPMP descriptor and protected by an IPMP tool.
- IPMP descriptor indicates that all media streams in the current session are protected by the IPMP tool described in the IPMP descriptor.
- IPMP—Descriptor—ID The unique ID of the IPMP descriptor. A specific descriptor can be referenced using this ID. 0x00000000 and OxFFFFFF are prohibited. Since the instantiation of the IPMP Tool is signaled by a unique IPMP Descriptor, the IPMP-Descriptor-ID can also be used as a unique identifier of the IPMP Tool Instance for the message.
- IPMP ToolID: The unique ID of the IPMP Tool that provides protection in that area.
- controlPoint A value that specifies the IPMP control point where the IPMP tool resides, and is one of the following values:
- TBBBED is defined in the STD model of the MPEG-2 system ISO / IEC13818-1.
- sequenceCode A value that specifies the relationship with IPMP tools (group) that exists at the same control point as IPMP tools. The value of this field specifies the priority of the tool at a particular control point. For example, a value of “20” means that the priority is higher than that of an IPMP Tool whose tool power sequenceCode is “12”. The data is first sent to the higher priority IPMP tool and then to the next higher priority IPMP tool. No two tools have the same sequence number at the same control point in the same stream.
- IPMP Data: IPMP data that is extended from IPMP—Data—BaseClass as specified in ISO 13818-11. IPMP data includes, but is not limited to, IPMP rights data, IPMP key data, tool structure data, etc.
- CertType The type of authentication mechanism used, the value being given by the registrar.
- Verifying—Tool ID: The ID of the tool required to verify the authentication (s). A value of “0” indicates a device.
- PSL FGS Player 176x144, 16-bit color, FGS, 10
- ntp 0- 7.40000
- a ipmp-d: "data: application / ipmp-d; base64,
- the receiving client sends IPMP control information (IPMP tool list) from the HTTP site (http: // aaa. Com / ipmp) written in the session level attribute of the SDP declaration. And rights information).
- IPMP tool list IPMP control information
- the FGS base layer video' stream is not protected, but the enhancement layer video is protected by a single IPMP tool.
- the description of the tool is stored in the IPMP descriptor and is encoded in Base64, which is further declared in the SDP second media attribute.
- the present invention uses the IPMP tool list and rights container in the session level attributes of the SDP and IPMP descriptors at either the media level or the session level attributes of the SDP to provide an adaptive type with streaming 'content rights information. I Notify PMP protection.
- IPMP—Control By using the IPMP tool list in the session level attribute “IPMP—Control”, indicate which IPMP tool is needed to participate in the entire session and play all media 'streams.
- IPMP IPMP—Indicates what usage rights are associated with the entire session by using the IPMP rights container in ControlJ.
- IPMP-D indicates which IPMP tool protects which media 'stream.
- the SDP attribute of "ipmp-control" and “ipmp-d” defined in the present invention allows complete Adaptable IPMP notification can be realized. Therefore, based on the description of ISOZIEC 13818-11 or ISO / IEC 14496-13 (MPEG-2Z4IPMP extension), it is possible to implement an adaptive and security-guaranteed IPMP framework on the terminal side.
- the present invention can take the following configurations shown in various embodiments.
- an apparatus for notifying adaptive IPMP protection on a server side there is provided an apparatus for notifying adaptive IPMP protection on a server side
- the server is a device for notifying adaptive IPMP protection on the server side, wherein the IPMP tool list is configured and stored according to the description of claim 1, and further, the media 'stream Constructing an IPMP descriptor indicating which tool to use for protection, and optionally storing tool structure or other types of IPMP data in said IPMP descriptor;
- an apparatus for notifying adaptive IPMP protection on a server side wherein an IPMP tool list is configured and stored according to the description in claim 1, and further, a media 'stream Constructing an IPMP descriptor indicating which tool to use for protection, and optionally storing tool structure or other types of IPMP data in said IPMP descriptor;
- the server is a device that notifies the adaptive IPMP protection, Storing usage rights information in an IPMP rights container;
- a device for notifying adaptive IPMP protection on the server side wherein the use right information is stored in the IPMP right data
- IPMP descriptor in an SDP media level attribute to indicate that the associated media 'stream is under the control of the described terms of use.
- an apparatus for notifying adaptive IPMP protection on a client side wherein the step of receiving the IPMP tool list before launching a media stream comprises receiving an SDP session level attribute.
- an apparatus for notifying adaptive IPMP protection on a client side The IPMP tool list is read according to the description of claim 7, and further,
- the device notifies the client of the adaptive IPMP protection, wherein the IPMP tool list is read according to claim 7,
- the device notifies the client of the adaptive IPMP protection.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Storage Device Security (AREA)
- Television Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/595,952 US20070083659A1 (en) | 2003-12-01 | 2004-11-26 | Streaming system |
JP2005517194A JPWO2005071960A1 (ja) | 2003-12-01 | 2004-11-26 | ストリーミング・システム |
EP04821199A EP1694067A4 (en) | 2003-12-01 | 2004-11-26 | CONTINUOUS TRANSMISSION SYSTEM |
Applications Claiming Priority (2)
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JP2003401383 | 2003-12-01 | ||
JP2003-401383 | 2003-12-01 |
Publications (1)
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WO2005071960A1 true WO2005071960A1 (ja) | 2005-08-04 |
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ID=34805266
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PCT/JP2004/017602 WO2005071960A1 (ja) | 2003-12-01 | 2004-11-26 | ストリーミング・システム |
Country Status (6)
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US (1) | US20070083659A1 (ja) |
EP (1) | EP1694067A4 (ja) |
JP (1) | JPWO2005071960A1 (ja) |
KR (1) | KR20060126477A (ja) |
CN (1) | CN1886987A (ja) |
WO (1) | WO2005071960A1 (ja) |
Cited By (1)
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JP2008066898A (ja) * | 2006-09-05 | 2008-03-21 | Sony Corp | 送信装置および受信装置 |
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KR100606800B1 (ko) * | 2005-03-15 | 2006-08-01 | 엘지전자 주식회사 | 이동통신 단말기의 멀티미디어 스트리밍 서비스 제공방법및 스트리밍 서비스 시스템 |
WO2007105362A1 (ja) * | 2006-03-07 | 2007-09-20 | Nec Corporation | 動画像配信システムおよび変換装置 |
KR100809432B1 (ko) * | 2006-11-29 | 2008-03-07 | 한국전자통신연구원 | 상호 운용적 drm 적용을 위한 콘텐츠 실행 단말에서의drm 적용 장치 및 그 동작 방법 |
CN100466683C (zh) * | 2007-03-22 | 2009-03-04 | 中兴通讯股份有限公司 | 一种数字电视广播手持设备的会话描述协议获取方法 |
CN101378546A (zh) * | 2007-08-28 | 2009-03-04 | 华为技术有限公司 | 实现媒体交付控制的方法、实体及*** |
CN100550860C (zh) * | 2007-11-27 | 2009-10-14 | 华为技术有限公司 | 媒体资源预留方法及业务包信息获取方法及装置 |
CN101459572B (zh) * | 2007-12-13 | 2011-07-06 | 华为技术有限公司 | 一种在ip分组网中实现关联媒体流的方法及装置 |
JP2009260818A (ja) * | 2008-04-18 | 2009-11-05 | Nec Corp | サーバ装置とコンテンツ配信方法とプログラム |
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- 2004-11-26 EP EP04821199A patent/EP1694067A4/en not_active Withdrawn
- 2004-11-26 CN CNA2004800355164A patent/CN1886987A/zh active Pending
- 2004-11-26 KR KR1020067009913A patent/KR20060126477A/ko not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
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CN1886987A (zh) | 2006-12-27 |
JPWO2005071960A1 (ja) | 2007-12-27 |
EP1694067A1 (en) | 2006-08-23 |
US20070083659A1 (en) | 2007-04-12 |
EP1694067A4 (en) | 2009-01-21 |
KR20060126477A (ko) | 2006-12-07 |
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