Dynamic location determination for a directionally controllable parametric emitter
US9510089B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2014 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Jan 7, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2217/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An ultrasonic audio system includes a location sensor includes a location tracking module configured to receive information from the location sensor and to determine a location of a listener in a listening environment; a time delay module configured to receive audio content and to generate a plurality of audio content signals, the generated audio content signals comprising a plurality of individual instances of the audio content signal each instance delayed in time relative to the other instances of the audio content signals; and an ultrasonic emitter comprising a plurality of electrically isolated sections, each section having an input electrically coupled to receive one of the individual instances of the audio content signal, and configured to emit an audio-modulated ultrasonic signal from each of the plurality of electrically isolated sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.