Asymmetric and general vibration waveforms from multiple synchronized vibration actuators
US8981682B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2012 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Sep 8, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/013
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The disclosure relates to General Synchronized Vibration devices that provide haptic feedback to a user and improve the performance of existing vibratory devices. Different actuator types may be employed to provide synchronized vibration, including linear rotary actuators, rotating eccentric mass actuators including interleaved rotating mass actuators, and rocking mass actuators. A controller sends signals to one or more driver circuits to provide adjustment of vibration magnitude, frequency, and direction of the actuators. The system may apply forces onto an object, and a sensor measures a feature(s) of the object. This information is provided to a vibration device controller, which can then modify the vibration waveform to improve overall system performance. Fourier synthesis can be used to approximate arbitrarily shaped waveforms by controlling the phase and frequency of vibration actuators. These waveforms can include asymmetry where the peak force in one direction is higher than the peak force in another direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.