Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements
Reexamination Certificate
2006-08-18
2008-10-28
Pascal, Robert J. (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Afc with logic elements
C331S011000, C331SDIG002, C327S156000
Reexamination Certificate
active
07443247
ABSTRACT:
A circuit arrangement includes a phase locked loop, having a phase detector on whose output side a phase signal can be tapped off and whose output side is coupled to a charge pump. Furthermore, the phase locked loop includes an oscillator whose input side is coupled to the charge pump and which is coupled at one output for emission of an oscillator signal to a first input of the phase detector. The circuit arrangement further includes a counter whose input side is supplied with an input signal which can be derived from the phase signal, and which is coupled to the output of the oscillator. The counter emits an output signal from the counter as a function of a value which represents a pulse length of the phase signal.
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patent: 6222400 (2001-04-01), Fukuda et al.
patent: 6621354 (2003-09-01), Kornblum et al.
patent: 6670834 (2003-12-01), Swanson
patent: 2006/0067454 (2006-03-01), Camuffo
patent: 0 550 360 (1993-07-01), None
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Eschweiler & Associates LLC
Gannon Levi
Infineon - Technologies AG
Pascal Robert J.
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