Patent ID: 11944388
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A  G  H | IPC A  G  H

Claim 19:
20. A method comprising:
measuring, by a plurality of sensors, a first magnetic field generated by a first plurality of antennae;
evaluating polynomials based on the first magnetic field to obtain position and orientation information for the plurality of sensors;
measuring, by the plurality of sensors, a second magnetic field generated by a second plurality of antennae; and
summing an interference magnetic field and a simulated magnetic field corresponding to position information in a simulated map to obtain a third magnetic field;
rotating the third magnetic field according to the orientation information;
determining a difference between the second magnetic field and the rotated magnetic field;
determining that the difference converges on a minimum difference; and
in response to determining that the difference converges on the minimum difference, using position and orientation information corresponding to the minimum difference.