Pulse or digital communications – Synchronizers – Network synchronizing more than two stations
Reexamination Certificate
2007-10-23
2007-10-23
Kim, Kevin (Department: 2611)
Pulse or digital communications
Synchronizers
Network synchronizing more than two stations
C375S358000, C455S456100
Reexamination Certificate
active
10614098
ABSTRACT:
A positioning system includes a plurality of devices configured to exchange RF signals with one another. A first device periodically receives a message from each other device during time slots assigned them. The received message includes information representing a time of arrival at the other device of a respective message transmitted by the first device. A time of arrival of the message from each of the other devices is determined by the first device. The first device periodically transmits messages to the other devices, each transmitted message including information representing the determined time of arrival for at least one of the other devices. A range from the first device to each of a plurality of the other devices is determined as function of the determined time of arrival of the message from the other device and the time of arrival information in the message from the other device.
REFERENCES:
patent: 4710020 (1987-12-01), Maddox et al.
patent: 4829442 (1989-05-01), Kadonoff et al.
patent: 4873449 (1989-10-01), Paramythioti et al.
patent: 5375059 (1994-12-01), Kyrtsos et al.
patent: 5390125 (1995-02-01), Sennott et al.
patent: 5438517 (1995-08-01), Sennott et al.
patent: 5610815 (1997-03-01), Gudat et al.
patent: 5640323 (1997-06-01), Kleimenhagen et al.
patent: 5657226 (1997-08-01), Shin et al.
patent: 5657317 (1997-08-01), Mahany et al.
patent: 5874918 (1999-02-01), Czarnecki et al.
patent: 5933079 (1999-08-01), Frink
patent: 5982164 (1999-11-01), Czarnecki et al.
patent: 5986602 (1999-11-01), Frink
patent: 6011974 (2000-01-01), Cedervall et al.
patent: 6072421 (2000-06-01), Fukae et al.
patent: 6125135 (2000-09-01), Woo et al.
patent: 6278710 (2001-08-01), Eidson
patent: 6424264 (2002-07-01), Giraldin et al.
patent: 6427079 (2002-07-01), Schneider et al.
patent: 6453168 (2002-09-01), McCrady et al.
patent: 6459966 (2002-10-01), Nakano et al.
patent: 6489917 (2002-12-01), Geisheimer et al.
patent: 6556942 (2003-04-01), Smith
patent: 6665333 (2003-12-01), McCrady et al.
patent: 2001/0027360 (2001-10-01), Nakano et al.
patent: 2001/0051527 (2001-12-01), Kuwahara et al.
patent: 2002/0080735 (2002-06-01), Heath et al.
patent: 2002/0097181 (2002-07-01), Chou et al.
patent: 2003/0005030 (2003-01-01), Sutton et al.
patent: 2003/0007473 (2003-01-01), Strong et al.
H. Edelsbruneer and T.S. Tan, “Quadratic time algorithm for the minmax length triangulation”, Proceedings of the 32ndAnnual Symposium on Foundations of Computer Science, pp. 414-423, 1991, San Juan, Puerto Rico.
F. van Diggelen and A. Brown, “Mathematical Aspects of GPS Raim”, IEEE Position Location and Navigation Symposium, pp. 733-738, 1994, Las Vegas, NV, USA.
International Search Report for Int'l Application No. PCT/US2004/19967, mailed Mar. 20, 2006.
Kaplan Mark Phillip
Rentz Mark Lindsay
Stephens Scott Adam
Woo, legal representative Andrea
Woo, legal representative Russell
Kim Kevin
Morgan & Lewis & Bockius, LLP
Navcom Technology Inc.
LandOfFree
Two-way RF ranging system and method for local positioning does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-way RF ranging system and method for local positioning, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-way RF ranging system and method for local positioning will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3826688