The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2001
Filed:
Jan. 13, 2000
Andrew Michael Voto, Swartz Creek, MI (US);
Ronald Kenneth Selby, Flint, MI (US);
Paul Thaddeus Glomski, Fenton, MI (US);
Maurice Lydell Dantzler, Carmel, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An electronic compass system for eliminating magnetic noise which is integrated with an instrument cluster. A vehicle accessory, such as a stepper motor, also located in the instrument cluster, generates a known, consistent, magnetic field of intensity sufficient to cause a static magnetic offset in the electronic compass for each of its' electrical states. A magnetic field sensor detects a combination of The Earth's magnetic field and this stray magnetic field. A controller uses a predetermined correction factor, corresponding to the electrical state, to eliminate the effect of the static magnetic offset. The controller then displays a heading unaffected by the static magnetic offset.