Touch screen based topological mapping with resistance framing design
US6650319B1 · kind B1 · utility
146Cited by
43References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1999 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Mar 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04113
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A new touch screen is based upon the mapping of coordinates from an equipotential space defined by a simple set of screen electrodes to some other, more useful coordinates, such as Cartesian. The key idea is that unique coordinate mapping can be achieved with each sensing pair of electronic readings. A new sensor is described with a band of intermediate conductivity framing the sensor area. This sensor can be used advantageously either as a standalone with uniform equipotential distributions or in connection with the mapping concepts discussed herein with non-uniform distributions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.