Geometrical instruments – Indicator of direction of force traversing natural media – Magnetic field responsive
Reexamination Certificate
2005-04-12
2005-04-12
Bennett, G. Bradley (Department: 2859)
Geometrical instruments
Indicator of direction of force traversing natural media
Magnetic field responsive
C073S001760
Reexamination Certificate
active
06877237
ABSTRACT:
A method and system is presented for acquiring calibration data for a three-axis electronic compass by positioning and rotating the compass so that each sensitive axis in the compass experiences variation in the magnetic field while rotating the compass. Acquiring the calibration data occurs by measuring output signals that reflect the magnetic fields acting on the electronic compass while rotating the compass. Positioning of the compass includes moving the compass so that at least one of the sensitive axes travels a path that approximately forms a cone when the compass is rotated around a gravity vector. Calibration data from three sensitive axes experiencing variation in the magnetic field is available during a single rotation of the compass.
REFERENCES:
patent: 4698912 (1987-10-01), Fowler et al.
patent: 4720992 (1988-01-01), Hormel
patent: 4807462 (1989-02-01), Al-Attar
patent: 5187872 (1993-02-01), Dufour
patent: 5287297 (1994-02-01), Ihara et al.
patent: 5305236 (1994-04-01), Germanetti
patent: 5564193 (1996-10-01), Brooks
patent: 5946813 (1999-09-01), Nachbaur et al.
patent: 5990679 (1999-11-01), Frommer et al.
patent: 6539639 (2003-04-01), Smith
patent: 20030023380 (2003-01-01), Woloszyk et al.
patent: 20040020064 (2004-02-01), Levi et al.
patent: 20040107590 (2004-06-01), Russell et al.
patent: 20040149004 (2004-08-01), Wu
Caruso et al., A New Perspective on Magnetic Field Sensing, May 1998.
Digital Compass Solutions, HMR3200/HMR3300, Honeywell International Inc., Feb. 2003.
Digital Compass Module HMR 3000, Honeywell International Inc., Dec. 1999.
HMR3000 Digital Compass Module User's Guide, Honeywell International Inc., Mar. 2001.
Smart Digital Magnetometer HMR 2300, Honeywell International Inc., Jun. 1997.
Caruso and Withanawasam, Vehicle Detection and Compass Applications using AMR Magnetic Sensors, Honeywell International Inc., May 1999.
Digital Compass Solution HMC 6352, Honeywell International Inc., May 2003.
Bennett G. Bradley
Honeywell International , Inc.
McDonnell Boehnen & Hulbert & Berghoff LLP
LandOfFree
Method and system for acquiring calibration data for an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for acquiring calibration data for an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for acquiring calibration data for an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3413604