Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2006-01-10
2006-01-10
Jung, David (Department: 2134)
Cryptography
Video cryptography
Video electric signal modification
C380S200000, C725S002000, C725S004000
Reexamination Certificate
active
06985586
ABSTRACT:
The aim of the present invention is to propose a method that allows the reduction of the bandwidth needs in a structure that implements an operating center and a plurality of user units, ensuring the availability for the final user, of a product amongst a vast choice and being able to be downloaded by said user in a short period of time.This aim is achieved by a system that implements at least one operating center that has a great number of products, a plurality of user units comprising security and storage means, characterized in that the link between at least one group of user units is of the bidirectional type and that the operating center comprises means for the transfer of a product that is stored in the storage means of a user unit to another user unit.
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Browning Clifford W.
Jung David
Nagracard S.A.
Woodard Emhardt Moriarty McNett & Henry LLP
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