Method of distributed IPMP device messaging and carriage of rights in MPEG IPMP content
First Claim
1. A method of messaging among distributed IPMP devices having a unique device ID to identify itself, the unique device ID being assigned during a manufacturing time, or at a time of purchasing, the method comprising:
- obtaining a domain ID for each IPMP device to identify a network domain it resides in, wherein a network comprises a group of IPMP devices;
broadcasting the unique device ID of an IPMP device to neighboring IPMP devices, upon joining a network domain of the IPMP device;
receiving an acknowledgement message including the unique device ID of neighboring IPMP devices, upon receiving the broadcasted unique device ID; and
transmitting a set of standard messages to exchange IPMP tools to ensure inter-operability among the group of IPMP devices.
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Accused Products
Abstract
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.
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Citations
5 Claims
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1. A method of messaging among distributed IPMP devices having a unique device ID to identify itself, the unique device ID being assigned during a manufacturing time, or at a time of purchasing, the method comprising:
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obtaining a domain ID for each IPMP device to identify a network domain it resides in, wherein a network comprises a group of IPMP devices; broadcasting the unique device ID of an IPMP device to neighboring IPMP devices, upon joining a network domain of the IPMP device; receiving an acknowledgement message including the unique device ID of neighboring IPMP devices, upon receiving the broadcasted unique device ID; and transmitting a set of standard messages to exchange IPMP tools to ensure inter-operability among the group of IPMP devices. - View Dependent Claims (2, 3, 4, 5)
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Specification