Transparent digitiser
US7292229B2 · kind B2 · utility
256Cited by
21References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2003 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Jan 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A digitizer for user interaction via an object with an electronically refreshable display screen, the digitizer comprising: a transparent sensing arrangement of detectors located at said electronically refreshable display screen for detecting an electric field of said object, said detectors having outputs, and an arrangement of differential amplifiers associated with said outputs, thereby to apply differential detection between said outputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.