Nested and parallel feedback control loops for ultra-fine measurements of magnetic fields from the brain using a neural detection system
US11980466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2021 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Oct 5, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An actuated magnetic field is generated at a plurality of distinct frequencies that at least partially cancels an outside magnetic field at the plurality of distinct frequencies, thereby yielding a total residual magnetic field. The total residual magnetic field is coarsely detected and a plurality of coarse error signals are respectively output. The total residual magnetic field is finely detected and a plurality of fine error signals are respectively output. The actuated magnetic field is controlled respectively at the plurality of distinct frequencies at least partially based on at least one of the plurality of coarse error signals, and finely controlled respectively at the plurality of distinct frequencies at least partially based on at least one of the plurality of fine error signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.