Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2008-03-04
2008-03-04
Moazzami, Nasser (Department: 2136)
Cryptography
Video cryptography
Video electric signal modification
C713S193000
Reexamination Certificate
active
10680605
ABSTRACT:
The invention relates to a process for the remote deactivation of at least one decoder for accessing multimedia digital data, which is provided by a service operator. The decoder has a unique identifier (ID) known to the operator. To deactivate a decoder with determined identifier (ID), the operator sends, through a communication network linking the decoder to the operator, a destruction command for destroying all or part of the software embedded in the decoder, this destruction command being addressed to the decoder with determined identifier (ID). The invention also relates to a decoder which comprises an eraser software module suitable for erasing all or part of the software embedded in the decoder when the decoder receives a destruction command which is addressed to it.
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Kiel Paul P.
Laks Joseph J.
Moazzami Nasser
Parthasarathy Pramila
Thomson Licensing
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