Current sensor output measurement system and method
US8866795B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Aug 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/0338
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Finger navigation methods, devices and systems are disclosed. In one embodiment the system comprises a light source configured to radiate a light beam towards a tactile surface. The system also comprises a photo detector module configured to sense speckle beams emitted by a target surface navigating the tactile surface in response to light hitting the target surface. The system further comprises a processor configured to track a movement of the target surface with respect to the tactile surface based on output from the photo detector module and a conductor structure for capacitive sensing of the target surface with respect to the tactile surface. The conductor structure is configured to determine a plurality of navigational functionalities based on the capacitive sensing of the target surface with respect to the tactile surface, including at least one of single click, double click, and scrolling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.