Accelerometer-based calibration of vehicle and smartphone coordinate systems
US9253603B1 · kind B1 · utility
11Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Mar 5, 2013 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Mar 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/48
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Calibration of vehicle and smartphone coordinate systems includes receiving acceleration data from an accelerometer of the smartphone. The smartphone identifies a Y-axis, a Z-axis, and an X-axis of the coordinate system of the vehicle relative to a coordinate system of the smartphone from the raw acceleration data. The smartphone generates processed acceleration data by transforming the raw acceleration data into the coordinate system of the smartphone. The processed acceleration data is used to detect driving conditions of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.