Resistive touchscreen having multiple selectable regions for pressure discrimination
US5815141A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Apr 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04104
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A resistive two sheet touchscreen that provides discrimination between objects touching the surface thereof. This is achieved by subdividing at least one sheet into a selected number of separated portions of selected configuration. Each of these portions is connected through a switch apparatus to circuitry for evaluating a signal on the separated portions corresponding to the position of touch. This switch can be utilized to deactivate any selected portion so that an object contacting this portion provides no signal to the circuitry. Any active portion that remains connected to the circuitry provides position information as with any touchscreen. Accordingly, for example, the touchscreen can be made insensitive to portions of a hand, while being sensitive to a stylus held by that hand. An embodiment utilizing a single resistive layer coupled with a conductive layer is described together with an embodiment utilizing two resistive layers, are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.