Inclination sensor and azimuth measuring apparatus using...

Geometrical instruments – Indicator of direction of force traversing natural media – Magnetic field responsive

Reexamination Certificate

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C033S35500D, C033S365000

Reexamination Certificate

active

07377046

ABSTRACT:
A mobile device or the like having a 3-axis electronic compass is rotated, and the outputs from magnetic sensors disposed in the three axis directions are input to a first arithmetic processing unit (11) so as to obtain the magnetic data X, Y, and Z. By inputting the magnetic data X, Y, and Z to a second arithmetic processing unit (12), gains Gx and Gz can be obtained. A control unit (16) generates access codes x0and z0corresponding to the gains Gx and Gz. The correspondence between the access codes x0and z0and inclination angle (pitch angle) α or between the gains Gx and Gz and inclination angle (pitch angle) α is tabulated and stored in a memory unit (17). The control unit (16) accesses the memory unit (17) so as to obtain an inclination angle (pitch angle) α0corresponding to the access codes x0and z0.

REFERENCES:
patent: 7268544 (2007-09-01), Yamada
patent: 7278219 (2007-10-01), Honkura et al.
patent: 2006/0168832 (2006-08-01), Yasui et al.
patent: 2007/0119061 (2007-05-01), Lee et al.
patent: 3-154816 (1991-07-01), None
patent: 2000-356520 (2000-12-01), None
patent: 2002-196055 (2002-07-01), None
patent: 2005-265414 (2005-09-01), None
patent: 2006-113019 (2006-04-01), None
International Search Report dated Jul. 3, 2006 from corresponding International Application No. PCT/JP2006/307642.

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