In-air ultrasonic rangefinding and angle estimation
US9323397B2 · kind B2 · utility
1Cited by
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8Claims
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Key dates
| Filing date | Mar 11, 2014 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Jul 2, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for determining location of a moveable object in relation to an input device includes an array of one or more piezoelectric micromachined ultrasonic transducer (pMUT) elements and a processor. The array is formed from a common substrate. The one or more pMUT elements include one or more transmitters and one or more receivers. The processor configured to determine a location of a moveable object in relation to an input device using sound waves that are emitted from the one or more transmitters, reflected from the moveable object, and received by the one or more receivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.