Phase-locked loop circuit having loop performing feedback contro

Details Phase-locked loop circuit having loop performing feedback contro Phase-locked loop circuit having loop performing feedback contro

1998-03-13

2000-10-31

Kim, W. Chris

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

375376, G11B 509, H03D 324

Patent

active

061411639

ABSTRACT:
A phase-locked loop circuit and recording/reproducing apparatus of this invention include a distributor (11) for receiving reproduction data to distribute and output it as n reproduction data, a phase comparator group (6) having n phase comparators for sequentially receiving the distributed reproduction data to compare the phases of the reproduction data with that of a reproduction clock, a frequency comparator (5) for receiving a reference clock and the reproduction clock to compare their frequencies, a selector (7) for receiving a switching control signal, the phase comparison result, and the frequency comparison result, and selecting either one of the phase comparison result and the frequency comparison result to output the selected one as a voltage signal, a charge pump (8) for receiving the voltage signal and converting it into a current signal to output the current signal, a loop filter (9) for receiving the current signal to output a low-frequency voltage signal, and a VCO (10) for receiving the low-frequency voltage signal to output a reproduction clock having a corresponding frequency.

REFERENCES:
patent: 5157355 (1992-10-01), Shikakura et al.
patent: 5610954 (1997-03-01), Miyashita et al.
patent: 5745314 (1998-04-01), Ikeda et al.
patent: 5943382 (1999-08-01), Li et al.

Affiliated with

Also associated with

Rating

Phase-locked loop circuit having loop performing feedback contro 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 circuit having loop performing feedback contro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase-locked loop circuit having loop performing feedback contro will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2059689