Acoustic ranging
US7729204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2007 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Oct 7, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2356/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Acoustic ranging may involve determining a distance between a first device and at least one other device using one or more acoustic signals. In an example embodiment, a first device emits a first acoustic signal and then receives the first acoustic signal at a first time. The first device also receives a second acoustic signal at a second time, with the second acoustic signal having been emitted by a second device. The first device ascertains a first value that reflects a difference between the first time and the second time. Responsive to at least the ascertained first value, the first device determines a distance between the first device and the second device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.