Cryptography – Video cryptography
Reexamination Certificate
2003-02-04
2008-10-14
Nguyen, Simon D (Department: 2618)
Cryptography
Video cryptography
C380S201000, C455S410000, C705S051000, C713S168000
Reexamination Certificate
active
07436958
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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English Language Abstract of JP 2003-199063.
Huang Zhongyang
Ji Ming
Senoh Takanori
Shen Sheng Mei
Greenblum & Bernstein P.L.C.
Matsushita Electric - Industrial Co., Ltd.
Nguyen Simon D
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