Operable membranes device and digital speaker comprising at least one such device
US10149054B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2016 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Mar 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/003
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An operable membrane device is provided, including a plate, a plurality of membranes suspended from the plate and being a seat of residual mechanical constraints, at least a first actuator configured to deform the plate outside its plane, second actuators, each second actuator being configured to deform a membrane outside its plane, and control electronics configured to generate second control signals at the second actuators in order to vibrate the membranes and configured to generate first control signals at the first actuator to cause a deformation of the plate so that the plate is found in the deformed state, wherein a mechanical constraint is applied to the membranes that at least reduces the residual constraints of the membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.