Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2011-08-09
2011-08-09
Barron, Jr., Gilberto (Department: 2432)
Cryptography
Video cryptography
Video electric signal modification
C725S031000, C713S192000, C380S242000, C380S239000
Reexamination Certificate
active
07995755
ABSTRACT:
A method for management of access means to conditional access data may include: initiating, from a security module of a multimedia unit, a verification of the next renewal date of the access means, which are associated to time information and are controlled by a management centre; determining, in the security module, the next renewal date of the access means; if the next renewal date of the access means is closer than a preset duration, then sending a request from the security module to the multimedia unit that requests the renewal of the access means; sending the request for renewal of the access means from the multimedia unit to the management centre; verifying by the management centre, if the multimedia unit is authorized to renew the access means; and in the case of a positive response, sending of an access means renewal message to the multimedia unit.
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Barron Jr. Gilberto
Harness & Dickey & Pierce P.L.C.
Ho Virginia
Nagravision S.A.
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