Driving techniques for phased-array systems
US10943578B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2017 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | May 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K15/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Various techniques for driving phased array systems are described, specifically intended for acoustic phased arrays with applications to mid-air haptics, parametric audio, acoustic levitation and acoustic imaging, including a system: 1) that is capable of mitigating the effect of the changes in the air to provide a consistent haptic experience; 2) that produces trap points in air; 3) that defines phased-array optimization in terms of vectors for the production of more consistent haptic effects; 4) that defines one or more control points or regions in space via a controlled acoustic field; 5) that uses a reduced representation method for the construction of acoustic basis functions; 6) that performs efficient evaluation of complex-valued functions for a large quantity of throughput; 7) that generates a Krylov sub-space of a matrix; and 8) that maximizes an objective described by different control points and/or regions to those used to create the acoustic basis functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.