Coordinate input apparatus
US6359616B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1999 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Jun 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03547
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A coordinate input apparatus for correcting the shift in an input coordinate system between different coordinate input apparatuses relative to an opening of each apparatus. A data processing block captures information from a coordinate detector PD to determine whether a tapping operation has been performed and determine whether the finger is being slid on a sensor board. A data analyzing block compares inputted absolute coordinates (X, y) with minimum coordinate values (Xmin, Ymin) and maximum coordinate values (Xmax, Ymax) indicative of a preset effective pointing area on the sensor board. A control block controls the data analyzing block to transfer replaced minimum coordinate values (Xmin, Ymin), maximum coordinate values (Xmax, Ymax) and the values of absolute coordinates (X, Y) to a data correcting block. Based on these minimum coordinate values (Xmin, Ymin) and maximum coordinate values (Xmax, Ymax), the data correcting block transforms the absolute coordinates (X, Y) into display coordinates. The control block moves a screen window or a cursor to a position indicated by absolute coordinates (X′, Y′) on a display screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.