摘要:
A Baseline DVB-CPCM is presented in this proposal to provide a secure and interoperable content delivery and transferring apparatus. The proposed Baseline DVB-CPCM is a unit to be implemented in a compliant CPCM device, and it consists of five major modules to be used for end-to end solution and content transferring between devices. These modules are CPCM Manager, Tools Box, Rights Management Module, Message Router, and CAS-CPCM Converter.
摘要:
A method of transferring information specifying an IPMP tool utilized for processing a content protected by IPMP to an IPMP terminal specifies and uses XML schema for terminal platform specification, parametric description, and parametric aggregation which is to be used in MPEG-n IPMP system. For example, according to the method, based on a predetermined terminal platform XML schema and language to describe a terminal platform, terminal platform specification is created based on the terminal platform schema and language to specify on what platform or terminal the IPMP tool can run. The terminal platform specification is attached to metadata associated with the tool. The terminal platform specification and the IPMP tool are transferred to an IPMP terminal which is implemented with a terminal platform parser based on the terminal platform schema and language.
摘要:
MPEG-n IPMP system with a wide interoperability is provided. For this purpose, the IPMP_Data_BaseClass is defined, several IPMP data extending from this base class are also defined. IPMP data is the data that describes IPMP information, it includes: IPMP_OpaqueData; IPMP_SelectiveDecryptionMessage; IPMP_AudioWatermarkingInit; IPMP_VideoWatermarkingInit; and IPMP_KeyData. Places where IPMP data extending from IPMP_Data_BaseClass are also specified. With the above work, a IPMP tool from Vendor A will be able to understand the IPMP data constructed by Content Author B, hence the inter-operability will be achieved, that is, the same protected content will be able to be consumed on different vendor's MPEG-n IPMP terminals.
摘要:
The present invention relates to content and IPMP tool transfer among distributed IPMP devices. A set of messages is defined for distributed IPMP devices. These messages include content transfer message, IPMP tool transfer messages, as well device ID broadcasting messages. Using these messages, distributed devices can use a standard set of messages to establish a network, and exchange content protected by IPMP in an inter-operable way. It is also related to carriage of rights in MPEG system, especially in MPEG-4 system. Rights ES (Elementary Stream) is defined in MPEG-4 system, to carry rights information. The Rights ES is also attached with information including whether the rights carried in the ES is proprietary or not, and/or what should be the rights management tool to handle this Rights ES. With that, terminal can be built in an inter-operable way, and retrieve rights from a standardized position.
摘要:
The present invention relates to digital item adaptation, especially MPEG-21 Digital Item Adaptation (DIA) which requires negotiation between different MPEG-21 peers. Advertisements metadata is defined to hold Digital Item Adaptation descriptions, such as Usage Environment description, BSDL description, XDI description, as well as MPEG-7 Media description in its descriptions element. With that, a generic DIA negotiation mechanism (protocol) using some XML schema based messages for DIA description transmission/exchange/update is defined. A generic and higher-level DIA Negotiation messages is also defined, which is independent from any network protocol, so that descriptions for Digital Item Adaptation can be directly included in the defined messages for registering, transmitting and updating to fulfil DIA description negotiation in those applications that is involved in digital item adaptation.
摘要:
This invention describes a way to represent IPMP scheme description for Digital Item to be used for MPEG-21 IPMP system. It aims to link IPMP with DID model of MPEG-21 framework. It also provides an interoperable and secure way for MPEG-21 IPMP system implementers to build the whole IPMP for Digital Item distribution and protection under MPEG-21 architecture. This invention also designs appropriate places to put the IPMP information including the important IPMP Tool related control information as well as other tool information. The information shall be put in DID Descriptor Statement at the beginning of Container, or tightly bound to the Resource element.
摘要:
A device which transmits an ISMA media stream subjected to MPEG-4 IPMP extension. An ISMA media stream having an ISMA header and including contents as a payload is constituted, an IPMP tool list descriptor representing, as a tool required for processing of the contents, at least one tool selected from a group including an IPMP tool, an ISMA Cryp decryption tool, and a key management system (KMS) tool is buried in the media stream, and the ISMA media stream is transmitted.
摘要:
A method of embedding copyright management information in AV content distributed in a downloadable file format is provided. In the MP4 file format, which is a format for distributing downloadable files, content data is separated by code into a general stream and an IPMP-controlled media stream. A box for embedding data required for IPMP initialization and a box for embedding data required to interpret IPMP protection and related parameters are rendered in a first box that is rendered in the control data box.
摘要:
In a digital content protection system for legally transmitting encrypted digital content from a transmitting device to a receiving device, unique device identifiers for devices are registered to a specific server in advance. The server also stores in advance information relating to an authentication method usable by each device, associating the information relating to an authentication method with the unique device identifiers. The transmitting device determines whether an identifier unique to the second device is stored on the server. When stored, the transmitting device determines that the receiving device is legal and determines from the server the appropriate authentication procedure. When the transmitting device has the determined procedure, the transmitting device uses this procedure to verify the authenticity of the receiving device. When the transmitting device does not have the determined procedure, the transmitting device acquires the authentication procedure from a source external to the transmitting device and then uses the acquired procedure to validate the receiving device.
摘要:
In a digital content protection system for legally transmitting encrypted digital content from a transmitting device (20) to a receiving device (30), unique device identifiers for devices are registered to a specific server (40) in advance. The server (40) also stores in advance information relating to an authentication method usable by each device, associating the information relating to an authentication method with the unique device identifiers. The transmitting device (20) determines whether an identifier unique to the second device is stored on the server (40). If stored, the transmitting device (20) determines that the receiving device (30) is legal and determines from the server (40) the appropriate authentication procedure. If the transmitting device (20) has the determined procedure, the transmitting device (20) uses this procedure to verify the authenticity of the receiving device (30). If the transmitting device (20) does not have the determined procedure, the transmitting device acquires the authentication procedure from an external and then uses the acquired procedure to validate the receiving device (30).