Coordinate input apparatus and its control method
US6208330A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1998 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Mar 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04106
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A coordinate input apparatus has an optical scanning/detection unit for touch input, and a vibration sensor for pen input. While no coordinate input is made, some components of the optical scanning/detection unit are activated to detect the size of an object that approaches or contacts an input board. When the detected size is smaller than a predetermined value (as large as about the fingertip), it is determined that touch input has been made, and the optical scanning/detection unit is activated to acquire the coordinate value of the touch input. On the other hand, when the detected size is larger than the predetermined value (larger than a fist), it is determined that pen input has been made, and coordinate detection using the vibration sensor is done.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.