Geometrical instruments – Indicator of direction of force traversing natural media – Magnetic field responsive
Reexamination Certificate
2005-11-08
2005-11-08
Bennett, G. Bradley (Department: 2859)
Geometrical instruments
Indicator of direction of force traversing natural media
Magnetic field responsive
C033S0010DD, C033S35500D
Reexamination Certificate
active
06962001
ABSTRACT:
The magnetic north detecting device comprises: a 3-dimensional geomagnetism sensor unit including three geomagnetism sensors for detecting respective components of a geomagnetism magnetic field intensity in respective directions of three coordinate axes perpendicular to each other; and a 3-dimensional operation functional section for carrying out an operation on the basis of the components of the geomagnetism magnetic field intensity detected by the geomagnetism sensors, and calculating a magnetic north direction of the geomagnetism, and the 3-dimensional operation functional section carries out the operation and calculates the magnetic north direction of the geomagnetism, based on two assumptions that: (i) at least one axis of three coordinate axes of the 3-dimensional geomagnetism sensor unit is level to the earth surface; and (ii) an angle of a geomagnetism magnetic field vector which is calculated from the detected components of the geomagnetism magnetic field intensity, referring to the earth surface, coincides with a dip angle of the geomagnetism which is assumed beforehand.
REFERENCES:
patent: 4797841 (1989-01-01), Hatch
patent: 5525901 (1996-06-01), Clymer et al.
patent: 5764055 (1998-06-01), Kawase
patent: 6049989 (2000-04-01), Lee
patent: 6105265 (2000-08-01), Gloor et al.
patent: 6539639 (2003-04-01), Smith
patent: 6701631 (2004-03-01), Monteiro et al.
patent: 6860022 (2005-03-01), Kato et al.
patent: 2002/0056202 (2002-05-01), Tamura
patent: 2002/0100178 (2002-08-01), Smith et al.
patent: 2003/0151401 (2003-08-01), Flament et al.
patent: 2004/0187328 (2004-09-01), Satoh et al.
patent: 2005/0072011 (2005-04-01), Miyashita et al.
Application Note AN00022, entitled Electronic Compass Design Using KMZ51 and KMZ52, pp 1-38, published by Philips Semiconductors Systems Laboratory, Hamburg, Germany, Mar. 30, 2000.
Kobayashi Nobukiyo
Shirakawa Kiwamu
Yano Takeshi
Bennett G. Bradley
Frishauf Holtz Goodman & Chick P.C.
Guadalupe Yaritza
The Research Institute for Electric and Magnetic Materials
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