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:
Mar. 08, 2011
Filed:
Mar. 26, 2007
Peter Traneus Anderson, Andover, MA (US);
Peter Traneus Anderson, Andover, MA (US);
General Electric Company, Schenectady, NY (US);
Abstract
Provided is an electromagnetic tracking system, comprising a coil arrangement comprising a first coil configured to generate a first magnetic field and a second coil configured to generate a second magnetic field and a drive unit configured to provide a first drive current to the first coil and to provide a second drive current to the second coil, wherein the first drive current and the second drive current are at about the same frequency, wherein the frequency is below 60 Hz, and wherein the first electromagnetic field and the second magnetic field are generated out of phase. Also provided is a method of electromagnetic tracking comprising generating a first electromagnetic field at a frequency, generating a second electromagnetic field at about the frequency, wherein the frequency is below 60 Hz and wherein the first electromagnetic field and the second magnetic field are generated out of phase, sensing the first electromagnetic field and the second electromagnetic field and processing a waveform indicative of a combination of the sensed first electromagnetic field and the sensed second electromagnetic field.