Default encryption and decryption

Details Default encryption and decryption Default encryption and decryption

2004-03-08

2009-11-24

Moazzami, Nasser G (Department: 2436)

Cryptography

Video cryptography

Video electric signal modification

C380S239000

Reexamination Certificate

active

07623662

ABSTRACT:
An apparatus for default encryption of content for distribution, consistent with certain embodiments, has a conditional access system. A conditional access management system communicates with and manages the conditional access system. A memory stores default encryption information for use by transmission equipment containing content encryption capability to encrypt certain content upon a communication failure between the content encryption system and the conditional access management system controlling it. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract without departing from certain embodiments of the invention.

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“System Solution Simulcrypt™”, product brochure, Harmonic Inc., 2001.
“How NDS Uses Simulcrypt to Migrate Systems and Set-Top Boxes”, NDS World Vision, Issue 18, Date Unknown, Printed from Internet on Nov. 20, 2003.

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