Digital phase and frequency detector

Details Digital phase and frequency detector Digital phase and frequency detector

2010-07-13

2011-12-20

O'Neill, Patrick (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

C327S002000, C327S007000, C327S012000, C331S025000, C324S076770, C324S076820

Reexamination Certificate

active

08081013

ABSTRACT:
A method for digital phase detection, comprises the steps of: providing a reference clock; receiving a feedback clock; determining a timing difference between the reference clock and the feedback clock; determining a polarity that indicates the leading or lagging relationship between the reference clock and the feedback clock; adaptively selecting one of at least two operating modes for generating a quantized level indicative of the timing difference, wherein in a first operating mode the quantized level is a constant maximum value and wherein in a second operating mode the quantized level is proportional to the timing difference; and generating a digital phase detection output as a combination of the polarity and the quantized level.

REFERENCES:
patent: 4879527 (1989-11-01), Geile et al.
patent: 5818265 (1998-10-01), Meller et al.
patent: 5883536 (1999-03-01), Patterson
patent: 7304510 (2007-12-01), Matsuta
patent: 7859344 (2010-12-01), Uozumi et al.
patent: 2010/0097150 (2010-04-01), Ueda et al.
patent: 2010/0327912 (2010-12-01), Chiu et al.

Affiliated with

Also associated with

Rating

Digital phase and frequency detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital phase and frequency detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital phase and frequency detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4266023