Three-dimensional data acquisition on a two-dimensional input device
US5262778A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1991 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Dec 19, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/045
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for providing signals indicative of X, Y, and Z parameter values onto a computer controlled display system having a computer and a display. A user activated input device is provided for sensing an input signal with an X value, a Y value and a Z value in the display system. The input device includes (i) a first electrically conductive sheet having a first terminal and a second terminal, (ii) a second electrically conductive sheet having a third terminal and a fourth terminal, and (iii) a separator separating the first conductive sheet and the second conductive sheet. The input signal is provided by applying a pressure at a location on the first conductive sheet of the input device. The first sheet contacts the second sheet at the location. The location on the first conductive sheet corresponds to the X position and the Y position of the input signal to the display system. The pressure at the location corresponds to the Z value of the input signal to the display system. A predetermined current (I) is applied at the first terminal of the first sheet and a ground at the third terminal of the second sheet. The X position, the Y position, and the Z values are measu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.