Motion capture pointer with data fusion
US9261980B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 26, 2009 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Sep 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/033
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention applies to a pointing device of a mobile element, for example a cursor, on a plane surface. The pointing device comprises a first sensor for measuring the angular rates of the device and a second sensor of the linear accelerations along three dimensions of said device. Preferably, the first sensor is a two-axis or three-axis gyrometer and the second sensor is a three-axis accelerometer. The invention makes it possible to render the movements of the mobile element in the surface of the orientation in which the pointing device is held by its user. This result is achieved by global resolution of the angles of torsion by combining the measurements of the first and second sensors either within an extended Kalman filter or by application of an optimization criterion. The invention also provides a method for estimating the parameters which characterize motion and/or orientation of an object in space from said combination of the measurements of the first and second sensors either within an extended Kalman filter or by application of an optimization criterion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.