Oscillator system

Details Oscillator system Oscillator system

1992-09-11

1994-01-04

Swann, Tod R.

Cryptography

Cryptanalysis

380 6, 331 1A, H04N 7167

Patent

active

052767345

ABSTRACT:
A system for producing an oscillating signal to be used for jamming signal for a band of CATV has a voltage producing circuit for producing a control voltage corresponding to the band, a first oscillator circuit for producing a first oscillating signal having a frequency dependent on the control voltage, and a second oscillator circuit for producing a fixed second oscillating signal. The frequencies of the first and second signals are combined to produce a final oscillating signal. A deviation of the frequency of the actual final oscillating signal from a desired final oscillating is detected, and the deviation is corrected with a correcting value corresponding to the deviation.

REFERENCES:
patent: 4518929 (1985-05-01), Owen
patent: 4613826 (1986-09-01), Masuko et al.
patent: 4792971 (1988-12-01), Uemura
patent: 4817197 (1989-03-01), Shimizu et al.
patent: 4912760 (1990-03-01), West, Jr. et al.
patent: 4914695 (1990-04-01), Martin

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