Apparatus and methods for ultrasonic sensor navigation
US10184797B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2016 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Jan 25, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/23
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and methods are disclosed for determining a navigational constraint for a portable device using an ultrasonic sensor. The navigational constraint may be used to supplement other navigational solutions or may be used independently. The ultrasonic sensor may provide a plurality of samples to be processed to determine the constraint. Processing the ultrasonic samples may include performing a flow analysis regarding detected external objects. Determining the constraint may include any or all of determining a context for usage, distinguishing usage modes, estimating relative heading changes, and estimating misalignment angle between device and platform needed to determine direction of motion of the platform and determining a speed of the portable device from the samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.