Tactile designation device with high-resolution transparent capacitive surface
US5801682A · kind A · utility
19Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Mar 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0444
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A tactile designation device comprises a continuous transparent capacitive surface supported at its corners by flexible strips to which there are attached strain gauges, a HF supply source, a series capacitor, a multiplexer, a detection circuit and a computer. The corners of the capacitive surface are connected alternately to the HF voltage, and the voltages measured are compared with a table of values to determine the touch point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.