Method and apparatus for assisting pull-in of a phase-locked...

Details Method and apparatus for assisting pull-in of a phase-locked... Method and apparatus for assisting pull-in of a phase-locked...

2007-09-04

2007-09-04

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S034000, C331S017000, C331S17700V, C327S156000, C375S376000

Reexamination Certificate

active

11212233

ABSTRACT:
A method, algorithm, software, architecture, circuit, and/or system for assisting pull-in of a phase-locked loop (PLL) are disclosed. In one embodiment, a PLL can include: (i) a phase detector that may receive a serial data stream and output a pump control signal; (ii) a charge pump that can receive the pump control signal and substantially determine a frequency control when a precharge signal is de-asserted; (iii) a precharge/filter circuit that may connect to the charge pump and may substantially determine the frequency control when the precharge signal is asserted; and (iv) an oscillator that may connect to the precharge/filter circuit and may provide a recovered clock in response to the frequency control, where the recovered clock may be correlated to a frequency of the serial data stream. The frequency control may be current and/or voltage based, for example. Embodiments of the present invention can advantageously provide a reliable and simplified design approach for pulling-in a PLL lock.

REFERENCES:
patent: 4320360 (1982-03-01), Thomas
patent: 4375694 (1983-03-01), Kuhn
patent: 4443769 (1984-04-01), Aschwanden et al.
patent: 5124669 (1992-06-01), Palmer et al.
patent: 5394115 (1995-02-01), Lampel
patent: 5619484 (1997-04-01), Yokota et al.
patent: 5818304 (1998-10-01), Hogeboom
patent: 6031427 (2000-02-01), Black
patent: 2006/0208809 (2006-09-01), Erdogan

Affiliated with

Also associated with

Rating

Method and apparatus for assisting pull-in of a phase-locked... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for assisting pull-in of a phase-locked..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for assisting pull-in of a phase-locked... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3740924