Digital fractional phase detector

Details Digital fractional phase detector Digital fractional phase detector

2005-01-04

2005-01-04

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

C327S010000

Reexamination Certificate

active

06838912

ABSTRACT:
A digital fractional phase detector is shown that uses a phase error detector for generating a phase error signal based on the phase difference between a reference clock signal and a feedback clock signal. A quantizer directly measures the pulse width of a phase error signal and outputs the value in a digital form. By directly measuring the phase error signal, quantization accuracy is increased. In order to calibrate the digital fractional phase detector, a calibration pulse generator generates a calibration pulse of a known duration and passes it to the quantizer.

REFERENCES:
patent: 3969674 (1976-07-01), Tracey
patent: 4322852 (1982-03-01), Barnes
patent: 5189420 (1993-02-01), Eddy et al.
patent: 5369404 (1994-11-01), Galton
patent: 5553104 (1996-09-01), Takashi et al.
patent: 6429693 (2002-08-01), Staszewski et al.
patent: WO 200186816 (2001-11-01), None

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