Detection of metal disturbance
US6147480A · kind A · utility
209Cited by
47References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Oct 15, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/0809
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for tracking an object using energy fields, in the presence of interference due to introduction of an article responsive to the fields, in the vicinity of the object. One or more desired energy fields are produced in the vicinity of the object, and a characteristic of energy fields induced due to introduction of the article is determined. Signals are generated responsive to the energy fields at a plurality of locations of the object after introduction of the article. Spatial coordinates of the object are determined, responsive to the generated signals and the determined characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.