Electricity: measuring and testing – Magnetic – Magnetometers
Reexamination Certificate
2011-06-21
2011-06-21
Whittington, Kenneth J (Department: 2858)
Electricity: measuring and testing
Magnetic
Magnetometers
C324S207200
Reexamination Certificate
active
07965076
ABSTRACT:
A magnetic angle sensor100comprises a bulk substrate; a circular well101provided upon the bulk substrate; an even numbered plurality of electrodes102a-102xspaced at regular intervals in a ring formation over the circular well; and a pair of biasing electrodes for selectively applying a progressive succession of differently directed bias currents104to and/or using the said ring of electrodes102to provide a succession of Hall potentials indicative of the relative magnitude of successive differently oriented magnetic field components B in the plane of the magnetic angle sensor100. The sensor100operates cyclically and the full progressive succession cycle involves applying and/or using each electrode102in the ring at least once for applying a bias current and/or sensing a Hall potential. In such a manner, the full cycle comprises the progressive succession of the axis of measurement of the sensor100through a complete rotation within the plane of the sensor. By monitoring the phase of the generated signal or monitoring the zero crossings of the generated signal the orientation of the magnetic field coin the plane of the sensor can be determined.
REFERENCES:
patent: 4668914 (1987-05-01), Kersten et al.
patent: 4761569 (1988-08-01), Higgs
patent: 5541506 (1996-07-01), Kawakita et al.
patent: 5572058 (1996-11-01), Biard
patent: 5612618 (1997-03-01), Arakawa
patent: 5619137 (1997-04-01), Vig et al.
patent: 5621319 (1997-04-01), Bilotti et al.
patent: 5657189 (1997-08-01), Sandhu
patent: 5694038 (1997-12-01), Moody et al.
patent: 5831513 (1998-11-01), Lue
patent: 5844411 (1998-12-01), Vogt
patent: 5942895 (1999-08-01), Popovic et al.
patent: 6064199 (2000-05-01), Walter et al.
patent: 6064202 (2000-05-01), Steiner et al.
patent: 6091239 (2000-07-01), Vig et al.
patent: 6100680 (2000-08-01), Vig et al.
patent: 6265864 (2001-07-01), De Winter et al.
patent: 6356741 (2002-03-01), Bilotti et al.
patent: 10 2005 014 509 (2006-10-01), None
patent: 0 631 416 (1994-12-01), None
patent: 0875733 (1998-11-01), None
patent: 62048160 (1987-02-01), None
patent: WO 2008/145662 (2008-12-01), None
“3235 Dual-Output Hall-Effect Switch,” pp. 4-64 thru 4-67.
“Sensor Signal Conditioning: an IC Designer's Perspective,” Sensors, pp. 23-30 (Nov. 1991).
Gilbert, J., “Product Description—Technical Advances in Hall-Effect Sensing,” Allegro MicroSystems, Inc., pp. 1-8 (May 10, 2000).
P. Kejik, Circular Hall Transducer for Angular Position Sensing, Transducers & Eurosensors '07, pp. 2593-2596, The 14thInternational Conference on Solid-State Sensors, Actuators and Microsystems, Lyon, France.
European Search Report based on EP 08 01 0109 dated Aug. 18, 2010.
Kilpatrick Townsend & Stockton LLP
Melexis NV, Microelectronic Integrated Systems
Whittington Kenneth J
LandOfFree
Magnetic field orientation sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic field orientation sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic field orientation sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2622189