Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements
Patent
1993-03-15
1995-03-14
Nelli, Raymond A.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Afc with logic elements
331 17, H03L 700
Patent
active
053980069
ABSTRACT:
A method of automatically controlling a loop comprising the steps of applying an input signal and an error correction signal to a signal correction circuit to provide a digital corrected signal. Applying the digital corrected signal and a reference signal to an error measurement circuit and providing a difference signal representative of the difference between the corrected signal and the reference signal. Applying the difference signal to a tri-state buffer having an output which is switchable to high impedance and passing the error correction signal to a correction circuit through an integrator and a local generator circuit. The buffer is switched to high impedance when the difference between the error correction signal and the reference signal is zero.
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Guntzburger Philippe
Moraillon Jean-Yves
Rambault Claude
Henig Sammy S.
Laks Joseph J.
Nelli Raymond A.
Thomson Consumer Electronics S.A.
Tripoli Joseph S.
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