Method for retransmission of use authorization information

Details Method for retransmission of use authorization information Method for retransmission of use authorization information

2011-01-25

2011-01-25

Moazzami, Nasser (Department: 2436)

Information security

Prevention of unauthorized use of data including prevention...

C726S022000, C726S023000, C726S024000, C726S025000, C726S027000, C726S028000

Reexamination Certificate

active

07877811

ABSTRACT:
In order to reduce the multitude of data for transmitting and converting use authorizations, which are received either encoded or non-encoded together with sound and/or picture contents in signals from optional networks, it is proposed to reduce the hierarchically structured use authorization information in the form of a tree structure before transmitting it further, such that non-occupied tree branches are detected and marked as not relevant, wherein the tree branches marked as not relevant are not included during the further transmitting of the use authorization information.

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Ernesto Damiani, DTI—Uiversita Di Milano: “XML and Security” XML and Security [online] Nov. 2003 (Nov. 2001)11, XP002389008.
DVB: “CPCM Reference Model, Working Draft” Digital Video Broadcasting (DVB) Content Protection and Copy Management (CPCM) System, [online], Jun. 28, 2005, XPOO2389009.
DVB: “Usage State Information (USI), Working Draft”, Digital Video Broadcasting (DVB) Content Protection and Copy Management (CPCM) System, [online], Jun. 28, 2005, XP002389010.
International Search Report Dated Jul. 20, 2005 issued PCT/EP2006/002885.

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