Digital ultrasonic emitting base station
US9411440B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2014 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Nov 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/017
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An acoustic tracking system is provided that includes receivers that detect first acoustic signals from a first set of transmitters disposed on a digital pen and second acoustic signals from a second set of transmitters disposed on a base station. The acoustic tracking system also includes a processing component that defines a two-dimensional plane on which the base station lies and determines a three-dimensional position of the digital pen relative to the base station. The processing component projects the three-dimensional position of the digital pen onto the two-dimensional plane and records, based on the projected three-dimensional position, the three-dimensional position of the digital pen relative to the base station, where the recorded three-dimensional position of the digital pen represents an object representative of movement of the digital pen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.