Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements
Patent
1992-02-25
1992-10-27
Mis, David
Oscillators
Automatic frequency stabilization using a phase or frequency...
Afc with logic elements
331 14, 331 17, 331 20, 331DIG2, 358158, H03L 708, H03L 710
Patent
active
051592924
ABSTRACT:
A PLL system having a variable oscillator and apparatus for generating both phase and frequency error signals for controlling the variable oscillator, includes apparatus, responsive to the polarity of the frequency error signal, to selectively disconnect the frequency error signal from the variable oscillator when the PLL system approaches phase lock.
REFERENCES:
patent: 4491862 (1985-01-01), Flamm
patent: 4884040 (1989-11-01), Fling
Floyd Martin Gardner, "Phaselock Techniques", 1979, Wiley & Son, pp. 65, 72, 79, 82-89.
Canfield Barth A.
Rumreich Mark F.
Schemmann Heinrich
Herrmann Eric P.
Kurdyla Ronald H.
Mis David
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
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