Method and system for determining time in a satellite positioning system

Patent 7554487 Issued on June 30, 2009. Estimated Expiration Date:

March 26, 2027. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Method and system for determining position on a moving platform, such as a ship, using signals from GPS satellites
Patent #: 4894662
Issued on: 01/16/1990
Inventor: Counselman

Vehicle tracking system employing global positioning system (GPS) satellites
Patent #: 5225842
Issued on: 07/06/1993
Inventor: Brown, et al.

Hybrid GPS/data line unit for rapid, precise, and robust position determination
Patent #: 5365450
Issued on: 11/15/1994
Inventor: Schuchman, et al.

Separated GPS sensor and processing system for remote GPS sensing and centralized ground station processing for remote mobile position and velocity determinations
Patent #: 5420592
Issued on: 05/30/1995
Inventor: Johnson

Signal compression systems
Patent #: 5426665
Issued on: 06/20/1995
Inventor: Cleverly, et al.

GPS receiver
Patent #: 5459473
Issued on: 10/17/1995
Inventor: Dempster, et al.

Process for obtaining a signal indicating a synchronization error between a pseudo-random signal sequence from a transmitter and a reference pseudo-random signal sequence from a receiver
Patent #: 5727018
Issued on: 03/10/1998
Inventor: Wolf, et al.

Atomic clock augmented global positioning system receivers and global positioning system incorporating same
Patent #: 5736960
Issued on: 04/07/1998
Inventor: Murphy, et al.

Method and apparatus for authenticating the location of remote users of networked computing systems
Patent #: 5757916
Issued on: 05/26/1998
Inventor: MacDoran, et al.

Navigation system with solution separation apparatus for detecting accuracy failures
Patent #: 5760737
Issued on: 06/02/1998
Inventor: Brenner

More ...

Inventors

Assignee

Broadcom Corporation

Application

No. 11728391 filed on 03/26/2007

US Classes:

342/357.02With accuracy enhancing

Examiners

Primary: Issing, Gregory C

Attorney, Agent or Firm

McAndrews, Held & Malloy, Ltd.

Foreign Patent References

1167993 EP 01/01/2002
WO 99/53338 WO 10/01/1999
WO-99/53338 WO 10/01/1999
WO 00/10028 WO 02/01/2000
WO-00/10028 WO 02/01/2000
WO-00/58750 WO 10/01/2000
WO 00/58750 WO 10/01/2000
WO-01/39698 WO 06/01/2001
WO 01/73467 WO 10/01/2001
WO-01/73467 WO 10/01/2001
WO 03/010912 WO 02/01/2003

International Class

G01S 5/14

Abstract

Method and apparatus for receiving an estimate of time in a satellite signal receiver receives an estimate of time from a server and compensates for error of a clock in the satellite signal receiver using the estimate of time. The output of the compensated clock is used when computing a position of the satellite signal receiver. The estimate of time is received using a network time protocol (NTP), a simple network time protocol (SNTP), or by one-way broadcast from the server.

Other References

Supplementaary European Search Report received from our European Foreign associate, A.A. Thornton & Co. on Oct. 1, 2004, from corresponding EP Application 01997046.6.
Kao, M. H., et al. “Multiconfiguration Kalman Filter Design for High-Performance GPS Navigation,” IEEE Transactions on Automatic Control, vol. AC-28, No. 3, Mar. 1983, pp. 304-314.
Knight, D. T. “Rapid Development of Tightly-Coupled GPS/INS Systems,” IEEE AES Systems Magazine, Feb. 1997, pp. 14-18, Feb. 1997.
Lin, X. et al. “Enhanced Accuracy GPS Navigation Using the Interacting Multiple Model Estimator,” IEEEx-plore, IEEE, pp. 4-1911 through 4-1923, 2001.
Commission Investigative Staff's Notice of Prior Art, Certain GPS Devices and Products Containing Same, United States International Trade Commission Investigation No. 337-TA-602, Feb. 15, 2008.
Complainants' Notice of Prior Art Pursuant to Ground Rule 5, Certain GPS Devices and Products Containing Same, United States International Trade Commission Investigation No. 337-TA-602, Feb. 15, 2008.
Respondents' First Supplemental Corrected Notice of Prior Art, Certain GPS Devices and Products Containing Same, United States International Trade Commission Investigation No. 337-TA-602, Mar. 4, 2008.
Respondents' Notice of Prior Art, Certain GPS Devices and Products Containing Same, United States International Trade Commission Investigation No. 337-TA-602, Feb. 15, 2008.
Rebuttal Expert Report of Anthony R. Pratt, Ph.D. Regarding U.S. Patent Nos. 6,704,651, 6,417,801 and 6,937,187, Rebuttal vol. II: The ′801 And ′187 Patents, Redacted—Non-Confidential Version, Mar. 10, 2008.
Initial Determination, Certain GPS Devices and Products Containing Same, United States International Trade Commission Investigation No. 337-TA-602, Public Version, Nov. 25, 2008.
Wu, S.C., et al., “MicroGPS for Low-Cost Orbit Determination,” TDA Progress Report 42-131, pp. 1-12, Nov. 15, 1997.
Peterson, Capt. Benjamin, et al., “GPS Receiver Structures for the Urban Canyon,” U.S. Coast Guard Academy, ION-GPS-95, Session C4, Land Vehicular Applications, Palm Springs, CA, pp. 1323-1332, Sep. 12-15, 1995.
Noe, P. S., et al., “A Navigation Algorithm for the Low-Cost GPS Receiver,” Navigation: Journal of the Institute of Navigation, vol. 25, No. 2, pp. 258-264, Summer 1978.
Milliken, R. J., et al., “Principle of Operation of NAVSTAR and System Characteristics,” Navigation: Journal of the Institute of Navigation, vol. 25, No. 2, pp. 95-106, Summer 1978.
Lannelongue, Stephane, et al., “Fast Acquisition Techniques for G.P.S. Receivers,” TTC and Navigation Section, European Space Agency (ESA/ESTEC), ION-GPS-98, Session 2B, Land Navigation, Denver, CO, pp. 261-269, Jun. 1-3, 1998.
File History—U.S. Appl. No. 10/081,164, Feb. 22, 2002.
Aparicio., M., et al. “GPS Satellite and Payload,” Global Positioning System: Theory and Applications vol. I, Progress in Astronautics and Aeronautics, vol. 163, Ch. 6, pp. 209-244, 1996.
Spilker Jr., J.J., et al. “Overview of GPS Operation and Design,” Global Positioning System: Theory and Applications vol. I, Progress in Astronautics and Aeronautics, vol. 163, Ch. 2, pp. 29-55, 1996.
Lamance, J., et al. “Assisted GPS—Low Infrastructure Approach,” GPS World, vol. 13, No. 3, pp. 46-51, Mar. 2002.
Chansarkar, M., et al. “Acquisition of GPS Signals at Very Low Signal to Noise Ratio,” ION NTM 2000, Anaheim, CA, pp. 731-737, Jan. 26-28, 2000.
Young, L., et al. “GPS Precision Orbit Determination: Measured Receiver Performance,” Jet Propulsion Laboratory, California Institute of Technology, http://hdl.handle.net/2014/35887, 1993.
Melbourne, W.G., et al. “Scientific Applications of GPS on Low Earth Orbiters,” Jet Propulsion Laboratory, California Institute of Technology, http://hdl.handle.net/2014/32419, 1994.
Respondents' (Mio Technology Limited, USA; MiTAC International Corporation; Pharos Science & Applications, Inc.; E-TEN Information Systems Co. Ltd.) Fifth Supplemental Objections and Responses to Global Locate, Inc.'s First Set of Interrogatories (Nos. 19, 21-23 and 27-28), Apr. 3, 2008.
Respondents' (Mio Technology Limited, USA; MiTAC International Corporation; Pharos Science & Applications, Inc.; E-TEN Information Systems Co. Ltd.) First Supplemental Objections and Responses in Common to Global Locate, Inc.'s First Set of Interrogatories (Nos. 22, 23 and 49) and Exhibits 1-5 and 19-22, Aug. 31, 2007.
Respondent SiRF Technology, Inc.'s Sixth Supplemental Objections and Responses To Global Locate, Inc.'s First Set of Interrogatories (Nos. 19, 21-23, and 27-28), Apr. 3, 2008.
Respondent SiRF Technology, Inc.'s First Supplemental Objections and Responses to Global Locate, Inc.'s First Set of Interrogatories (Nos. 22, 23 and 49) and Exhibits 1-5 and 19-22, Aug. 24, 2007.
First Supplemental Report of Dr. Stephen Heppe Regarding Invalidity of U.S. Patent Nos. 6,417,801, 6,606,346, 6,937,187, and 7,158,080, Apr. 4, 2008.
Expert Report of Stephen Heppe Regarding Invalidity of U.S. patent Nos. 6,417,801, 6,606,346, 6,651,000, 6,704,651, 6,937,187, and 7,158,080, Feb. 25, 2008.
TIA/EIA Interim Standard, Position Determination Service Standard for Dual Mode Spread Spectrum Systems, TIA/EIA/IS-801, Nov. 1999.
Yiu, K., et al. “A Low-Cost GPS Receiver for Land Navigation,” Global Positioning System, Hewlett-Packard Laboratories, Palo Alto, CA, pp. 44-60, May 1982.
Syrjarinne, J., “Time Recovery Through Fusion of Inaccurate Network Timing Assistance with GPS Measurements,” Proceedings of the Third International Conference on Fusion, vol. 2, pp. WeD5-3-WeD5-10, Jul. 10-13, 2000.
Chansarkar, M., “Application for Patent—Resolving Time Ambiguity in GPS Using Over-Determined Navigation Solution,” U.S. Appl. No. 60/232,738, filed Sep. 15, 2000.
Supplementary European Search Report received from our European Foreign associate, A. A. Thornton & Co., on Oct. 1, 2004, from corresponding EPO Application 01997046.6.
International Search Report dated Feb. 20, 2004 for corresponding PCT application, PCT/US03/31222.
Mills, David L., “Adaptive Hybrid Clock Discipline Algorithm for the Network Time Protocol,” IEEE/ACM Transactions on Networking, vol. 6, No. 5, Oct. 1998, pp. 505-514.
Mills, David L. “Adaptive Hybrid Clock Discipline Algorithm for the Network Time Protocol,” IEEE/ACM Transactions on Networking, vol. 6, No. 5 Oct. 1998, pp. 505-514.