Orienting a moving electromagnetic tracking reference frame via external localizing data on an electromagnetic sensor using IMU data
US12305990B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | May 9, 2022 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Jan 15, 2044 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/8082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for determining pose of a transmitter, and by extension the pose of one or more receivers, in an electromagnetic tracking system when the transmitter is allowed to move freely in the physical environment. The method operates in a system that incorporates two separate tracking technologies and an Inertial Measurement Unit, one determining the pose of a device relative to a global reference frame and another determining the pose of the same device relative to a local reference frame, thereby avoiding the latency problem and resulting inaccuracy of pose determinations of known prior approaches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.