Controlling output current for electrosensory vibration
US9632583B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2015 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Jul 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/041
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In electrosensory vibration technology, a potential difference is formed between a touched surface of a device and a body member of a user, creating an attractive force between the two. To meet industry safety standards, the capability of a corresponding voltage source to drive electrical current may be kept low, and the maximum slew rate with such a voltage source would be accordingly limited. However, such a limit on the slew rate may result in softer haptic effects or lower repetition rates of haptic effects, and the ability of such a device to express a wide range of haptic effects may be reduced compared to a device capable of driving the external load with the maximum current allowed by applicable standards. As a technical means to solve this technical problem, it may be helpful to use a powerful voltage source with a controller to control the outgoing current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.