Correcting time synchronization inaccuracy caused by...

Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S358000

Reexamination Certificate

active

07602873

ABSTRACT:
Techniques for correcting time synchronization inaccuracy caused by asymmetric delays on a communication link. Time synchronization according to the present techniques includes determining an asymmetry in a propagation delay on a communication link used by a first device and a second device to exchange timing information and incorporating the asymmetry into a determination of a clock offset between the first and second devices.

REFERENCES:
patent: 6609077 (2003-08-01), Brown et al.
patent: 7126800 (2006-10-01), Premerlani et al.
patent: 2006/0251084 (2006-11-01), Elliot
patent: 19917354 (2000-10-01), None
patent: 1659718 (2006-05-01), None
European Search Report dated Mar. 6, 2007—3 Pages.
T. Gotoh, K. Imamura and A. Kaneko—“Improvement Of NTP Time Offset Under The Asymmetric Network With Double Packets Method”; 2002 Conference on Precision Electromagnetic Measurements; Conference Digest. CPEM 2002, Ottawa, Canada, Jun. 16-21, 2002; Conference on Precision Elecromagnetic Measurements, New York, NY: IEEE, US, Jun. 16, 2002; pp. 448-449, XP010604064.
Kenneth W. Monington and Judah Levine—“Time Synchronization Using The Internet”; Frequency Control Symposium, 1997, Proceedings Of The 1997 IEEE International, Orlando, FL, USA, May 28-30, 1997, New York, NY, IEEE, USA, May 28, 1997, pp. 395-403, XP010257463.
Andreas Fasbender and Ingo Rulands—“On Assessing Undirectional Latencies In Packet-Switched Networks”; Communications, 1997. ICC '97 Montreal, Towards the Knowledge Millennium. 1997 IEEE International Conference On Montreal, QUE, Canada, Jun. 8-12, 1997, New York, NY, USA, IEEE, US, vol. 1, Jun. 8, 1997, pp. 490-494, XP010227065.
Holmeide O et al—“Time Synchronization In Switched Ethernet Is Not Easy. Latency Depends On Load And Architecture. However, This Problem Can Be Solved If Time Servers Are Integrated In The Ethernet Switch And Ethernet Enabled Node”; Internet Citation, (Online); Sep. 2001, XP002909937; Retrieved From The Internet: URL: HTTP://Ethernet.Industrial-Networking-Com/Articles/I07Switched.ASP>; (Retrieved on Mar. 22, 2002).
D. Couvet, G. Florin and S. Natkin—“A Statistical Clock Synchronization Algorithm For Anisotropic Networks”; Proceedings Of The Symposium on Reliable Distributed Systems. Pisa, Sep. 30-Oct. 2, 1991, Los Alamitos, IEEE Comp. Soc. Press, US, vol. Symp. 10, Sep. 30, 1991, pp. 42-51, XP010025113.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Correcting time synchronization inaccuracy caused by... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Correcting time synchronization inaccuracy caused by..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correcting time synchronization inaccuracy caused by... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4106893

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.