Touch screens
US7852323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2004 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Mar 6, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2360/1438
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A touch screen control system comprising a touch screen (14) having first (50) and second conductive layers (52) arranged to be brought together by touching of the screen (14). A detection system (20, 30) is arranged to detect a contact position at which the screen (14) is touched by monitoring electrical signals from at least one of the layers (50, 52). The system further comprises an antenna (26), and the detection system includes a proximity sensing signal generator arranged to generate a proximity sensing signal to be transmitted between the antenna (26) and the first layer (50) via a user (40) of the system. The detection system is further arranged to receive the transmitted proximity sensing signal and determine therefrom the distance between a part (46) of the user and the touch screen (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.