Device for locating an object situated close to a detection area and a transparent keyboard using said device
US5459463A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1992 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Oct 8, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0445
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device is disclosed for locating an object situated close to a detection area and a transparent keyboard using said device. This device comprises a set of detection zones connected so as to form lines which extend parallel to each other and to a detection area, a second set of zones connected to each other so as to form columns which extend perpendicularly to the lines, at a small distance therefrom, a scanning device which applies an electric signal to the lines and columns and which identifies the lines and columns subject to a signal variation and means for determining the position of the object to be detected as a function of the lines and columns on which the signal variations have been detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.