Interdiction method and apparatus with variable dwell time

Details Interdiction method and apparatus with variable dwell time Interdiction method and apparatus with variable dwell time

1992-12-16

1995-11-14

Swann, Tod R.

Cryptography

Cryptanalysis

380 6, 380 20, 348 55, H04N 7167

Patent

active

054673976

ABSTRACT:
A cable television interdiction apparatus comprises a microprocessor actuation and control means for actuating and controlling one or more frequency agile voltage controlled oscillators. The voltage controlled oscillators selectively jam only unauthorized premium programming transmitted from a headend to a particular subscriber. The method of interdiction comprises the steps of generating and storing voltage control words for operating the oscillators consistent with a headend selected jamming factor for a particular channel to be jammed and addressably transmitted and stored premium programming authorization data.

REFERENCES:
patent: 4039954 (1977-08-01), den Toonder
patent: 4434436 (1984-02-01), Kleykamp et al.
patent: 4638357 (1987-01-01), Heimbach
patent: 4737990 (1988-04-01), Kaneko
patent: 4769838 (1988-09-01), Hasegawa
patent: 4912760 (1990-03-01), West, Jr. et al.
patent: 5265160 (1993-11-01), Harney et al.
patent: 5287539 (1994-02-01), West, Jr.
patent: 5289541 (1994-02-01), Schutte et al.

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