Touch panel using acoustic wave reflection
US6078315A · kind A · utility
50Cited by
20References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1997 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Nov 3, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0436
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch position sensor is shown in which a transducer or transducer array mounted to a side of a substrate generates pulse shear-mode acoustic wave and receives the partial wave reflected by the finger or other styles. An electronic circuitry connected to the transducers determine the position of the finger or style in geometrical coordinate terms by detecting time interval between the transmitted wave and reflected wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.