Cathode ray tube for use in a touch panel display system
US4746914A · kind A · utility
68Cited by
12References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1985 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Jun 6, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0436
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A cathode ray tube for use in a touch panel system that is capable of recognizing touch positions along a coordinate axis of a touch display surface of the system has a flat glass faceplate capable of propegating surface acoustic waves. An input surface wave transducer, acoustically coupled to the touch display surface, serves to launch a burst of surface waves on that surface. At least one array of wave reflective elements are disposed in or on the touch display surface for directing the surface waves derived from the input trasnducer across the touch display surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.