Touch screen capable of isolating noise signals
US6661408B2 · kind B2 · utility
9Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Oct 9, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04113
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch screen capable of isolating noise signals is mainly a touch screen installing at the front side of a liquid crystal display (LCD) screen or cathode ray tube (CRT) for eliminating electromagnetic and radio frequency interference received by the LCD and CRT. The touch screen includes an antenna like conductive wire which is able to receive same noise signals mixed in the touch control signals. The touch screen controller uses the noise signals received by the antenna wire to offset the noise signals in the controller for increasing accuracy of the touch screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.