Motion tracking system
US6409687B1 · kind B1 · utility
319Cited by
17References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 5, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jul 5, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1038
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Tracking a motion of a body by obtaining two types of measurements associated with the motion of the body, one of the types including acoustic measurement. An estimate of either an orientation or a position of the body is updated based on one of the two types of measurement, for example based on inertial measurement. The estimate is then updated based on the other of the two types of measurements, for example based on acoustic ranging. The invention also features determining range measurement to selected reference devices that are fixed in the environment of the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.