Phase locked loop for recovering clock

Details Phase locked loop for recovering clock Phase locked loop for recovering clock

1999-01-11

2000-09-05

Ton, My-Trang Nu

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327150, H03L 706

Patent

active

06114889&

ABSTRACT:
A PLL (phase locked loop) for recovering a clock preventing a DC value of an output voltage of a phase detector from being deviated in one-sided direction and maintaining a center frequency of a VCO, to thereby minimize the occurrence of timing errors, in the case where the period of a reference input signal to the phase detector is irregular and a part of a pulse column of the signal is omitted, in performing a clock recovery operation in a digital magnetic recording equipment or a digital communication system. The PLL includes: a phase detector having first and second signal delay parts and a first logical computing element, for detecting a phase of an output signal; and a voltage controlled oscillator for generating a predetermined frequency signal, the phase is detector further comprised of a second logical computing element for logically operating a reference input signal and an output signal of the voltage controlled oscillator to thereby output the result signal, and a third logical computing element for logically operating the output signals from the first and second logical computing elements to thereby output the result signal.

REFERENCES:
patent: 5036221 (1991-07-01), Brucculeri et al.
patent: 5386437 (1995-01-01), Yasuda
patent: 5799048 (1998-08-01), Farjad-Rad et al.
patent: 5828243 (1998-10-01), Bagley
patent: 5936430 (1999-08-01), Patterson

Affiliated with

Also associated with

Rating

Phase locked loop for recovering clock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase locked loop for recovering clock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase locked loop for recovering clock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2216037