Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2005-07-21
2009-12-08
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S241000, C327S244000, C327S272000
Reexamination Certificate
active
07629819
ABSTRACT:
A clock synchronization system and method avoids output clock jitter at high frequencies and also achieves a smooth phase transition at the boundary of the coarse and fine delays. The system may use a single coarse delay line configured to generate two intermediate clocks from the input reference clock and having a fixed phase difference therebetween. The coarse delay line may have a hierarchical or a non-hierarchical structure. A phase mixer receives these two intermediate clocks and generates the final output clock having a phase between the phases of the intermediate clocks. The coarse shifting in the delay line at high clock frequencies does not affect the phase relationship between the intermediate clocks fed into the phase mixer. The output clock from the phase mixer is time synchronized with the input reference clock and does not exhibit any jitter or noise even at high clock frequency inputs.
REFERENCES:
patent: 6060928 (2000-05-01), Jun et al.
patent: 6100735 (2000-08-01), Lu
patent: 6313675 (2001-11-01), Naffziger
patent: 6546530 (2003-04-01), Dreps et al.
patent: 6573771 (2003-06-01), Lee et al.
patent: 6661265 (2003-12-01), Partsch et al.
patent: 6765976 (2004-07-01), Oh
patent: 6768361 (2004-07-01), Kwak
patent: 6774691 (2004-08-01), Han et al.
patent: 6795931 (2004-09-01), LaBerge
patent: 6826247 (2004-11-01), Elliott et al.
patent: 6868504 (2005-03-01), Lin
patent: 7046059 (2006-05-01), Kwak
patent: 7088159 (2006-08-01), Kwak et al.
Kim Kang
Kwak Jongtae
Donovan Lincoln
Englund Terry L
Jones Day
Micro)n Technology, Inc.
Pencoske Edward L.
LandOfFree
Seamless coarse and fine delay structure for high... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Seamless coarse and fine delay structure for high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seamless coarse and fine delay structure for high... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4081847