Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2011-06-28
2011-06-28
Assouad, Patrick J (Department: 2858)
Electricity: measuring and testing
Magnetic
Displacement
C702S151000
Reexamination Certificate
active
07969147
ABSTRACT:
A rotation angle detecting device includes a signal generator, a magnetic rotor and a rotation angle calculating unit that calculates a rotation angle θ of the rotor based on the output signals of the signal generator. The signal generator includes a magnetic rotor that has a permanent magnet and a shaft connectable with the rotating object and at least three magnetic sensor elements disposed in the magnetic field to generate a plurality of output signals when the rotor rotates. The rotation angle calculating unit calculates a first candidate of the rotation angle θ from a first pair of the three output signals, examines whether the first candidate of the rotation angle θ is normal or not and calculates a next candidate of the rotation angle θ from another pair of the three output signals if the first candidate of the rotation angle θ is not normal, examines whether the next candidate of the rotation angle θ is normal or not, repeats the above two steps until a next candidate of the rotation angle θ is judged normal, and outputs one of the first and next candidates of the rotation angle θ as a formal rotation angle if it is judged normal.
REFERENCES:
patent: 6861837 (2005-03-01), Shimizu et al.
patent: 6894487 (2005-05-01), Kunz-Vizenetz
patent: 7218100 (2007-05-01), Matsumoto et al.
patent: 7420363 (2008-09-01), Hatanaka et al.
patent: 7436172 (2008-10-01), Matsumoto et al.
patent: 2007/0194786 (2007-08-01), Hatanaka et al.
patent: 08-068606 (1996-03-01), None
patent: 2002-243500 (2002-08-01), None
patent: 2003-075108 (2003-03-01), None
patent: 2003-202244 (2003-07-01), None
patent: 2006-138778 (2006-06-01), None
Japanese Office Action dated Jan. 20, 2009, issued in corresponding Japanese Application No. 2007-13380, with English translation.
Japanese Office Action dated Apr. 7, 2009, issued in corresponding Japanese Application No. 2007-133380, with English translation.
Fukaya Shigetoshi
Hatanaka Shinji
Takeda Kenji
Assouad Patrick J
Denso Corporation
Nippon Soken Inc.
Nixon & Vanderhye P.C.
Schindler David M.
LandOfFree
Rotation angle detecting device including multiple magnetic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotation angle detecting device including multiple magnetic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotation angle detecting device including multiple magnetic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2690271