Pulse or digital communications – Synchronizers – Synchronizing the sampling time of digital data
Reexamination Certificate
2008-01-08
2008-01-08
Payne, David C. (Department: 2611)
Pulse or digital communications
Synchronizers
Synchronizing the sampling time of digital data
C375S358000, C375S360000, C375S370000, C375S376000, C327S155000, C327S156000, C327S151000, C327S158000
Reexamination Certificate
active
10892760
ABSTRACT:
A method and circuit capable of handling skew between a clock and data signal up to +/− one half bit on a random input data pattern. A digital algorithm cycles through each data bit and individually deskews that bit by detecting data transitions in a first sampling region and in a second sampling region and determining a difference between a number of transitions in the first sampling region and a number of transitions in the second sampling region. The sampling regions and a deskew timing signal may then be incremented or decremented based on a comparison of the computed difference to a predetermined constant. If no transitions occur on a particular bit, the algorithm times out leaving the deskew timing signal in the original position. When analysis of a final bit of a channel is completed, the algorithm begins monitoring and analyzing the first bit of another channel.
REFERENCES:
patent: 6292116 (2001-09-01), Wang et al.
patent: 6903575 (2005-06-01), Davidson et al.
patent: 7164742 (2007-01-01), McLeod
Taylor, Ricky et al. 2003. National Semiconductor Advanced Information Spec. Preliminary 1.0. “High-Speed LVDS Receiver FPD00104 Product Development Specification.” Revised Jun. 2, 2003. 28 pages.
Alam Arif
Erhart Richard Alexander
Kuhns Mark D.
Tomasi Loren
Branch John W.
Darby & Darby PC
Guarino Rahel
National Semiconductor Corporation
Payne David C.
LandOfFree
Switched deskew on arbitrary data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switched deskew on arbitrary data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switched deskew on arbitrary data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3907245