Information security – Access control or authentication
Reexamination Certificate
2003-01-28
2009-11-03
Vu, Kimyen (Department: 2435)
Information security
Access control or authentication
C726S026000, C726S027000, C713S150000
Reexamination Certificate
active
07614079
ABSTRACT:
A method for transmitting entitlement management messages (EMM) controlling access to data and/or services to be provided to plural terminals in a data exchange network. The method, at the transmitting side: defines a set of EMM type messages as a function of at least one criterion representative of a type of data and/or services provided; defines plural types of logical transmission channels and associates at least one parameter to each type of channel to inform terminals of the EMM types transmitting on each described logical channel; assigns at least one channel among the defined logical transmission channels to each EMM message type; transmits the parameter and the logical channels to each terminal; multiplexes the logical transmission channels in the same data stream; and transmits the data stream to terminals. In the method, on reception each terminal filters incoming EMMs as a function of the parameter and at least one state parameter depending on a routine operation of the terminal.
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ETSI EN 300 468 V1.4.1 (Nov. 2000) Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB Systems. © 2000 European Telecommunications Standards Institute. [83 pages].
Bons Pascal
Hamou Bernard
Gyorfi Thomas
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Viaccess
Vu Kimyen
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