Cable subscriber control device using shared jamming modules

Details Cable subscriber control device using shared jamming modules Cable subscriber control device using shared jamming modules

1991-03-22

1992-08-18

Swann, Tod

Cryptography

Cryptanalysis

380 6, 455 261, 358349, H04N 7167

Patent

active

051406330

ABSTRACT:
A device is disclosed for controlling access to cable television signals. Jamming oscillators are shifted in frequency, jamming multiple services each. The oscillators are shared between multiple subscriber ports, providing a cost effective, high security control system. A modular approach allows security to be added as additional capacity is required.

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