Screen for playing audible signals by demodulating ultrasonic signals having the audible signals
US7747029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2006 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Apr 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K15/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sound reproduction screen includes: at least one cell including a vibrator which receives and is vibrated by an ultrasonic signal carrying an audible signal, and a medium which has nonlinear response characteristics with respect to a vibration of the vibrator; and a screen containing the at least one cell which is distributed in a matrix structure, wherein the vibrator of the cell includes an elastic body that is vibrated by the ultrasonic signal and reflects the audible signal separated from the ultrasonic signal according to the nonlinear response characteristics of the medium, and an asymmetrical body that is connected with the elastic body and vibrates in the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.