Algorithmic compensation system and method therefor for a touch sensor panel
US5940065A · kind A · utility
172Cited by
46References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1996 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Mar 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/045
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A general method is described for producing an inexpensive touchscreen system that provides accurate positional information and compensates for manufacturing variations without complicated sensor arrangements. Utilizing a set of sensed signals that are unique to each location on the touchscreen sensor, equations for X and Y are derived via curve fitting methods. The coefficients of the equations are stored with the sensor. During touchscreen operation the coefficients are used to calculate X and Y to the desired accuracy directly and independently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.