Biosignal measuring method and apparatus
US6544170B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 19, 2000 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Sep 20, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/246
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A biosignal measuring apparatus for measuring, with a plurality of sensors, minute biosignals generated from bioelectric current sources in a region of a patient to be diagnosed. The apparatus includes a signal decomposer for decomposing detection signals provided by the plurality of sensors into a plurality of independent components, a noise component remover for determining noise components among the independent components based only on states of the independent components, and removing the noise components, a signal restorer for deriving restored detection signals from respective non-noise independent components, and a signal analyzer for determining an intracerebral activity corresponding to each independent component of each of the restored detection signals. After removing independent components determined to be noise components by the independent component analysis technique, a detection signal is separately restored for each information source from the remaining non-noise independent components. Thus, without requiring separate magnetic sensors exclusively for detecting noise, restored magnetism detection signals sufficiently stripped of noise components for the purpose of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.