Embedded blacklisting for digital broadcast system security

Details Embedded blacklisting for digital broadcast system security Embedded blacklisting for digital broadcast system security

2006-02-10

2010-11-16

Barron, Jr., Gilberto (Department: 2432)

Cryptography

Video cryptography

Video electric signal modification

C713S168000

Reexamination Certificate

active

07835522

ABSTRACT:
An apparatus and method for transmission security is presented. In one embodiment, the apparatus comprises a receiver communicatively coupleable to an identifiable replaceable conditional access module (CAM) identified by an identification to enable reception of the service, and an authenticator controlling the operability of the receiver according to a comparison between the identification and a list comprising an identification of a plurality of CAMs, wherein the authenticator renders the receiver inoperable according to the comparison.

REFERENCES:
patent: 5680457 (1997-10-01), Bestler et al.

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