Touchscreen controller with pen and/or finger inputs
US5956020A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1995 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Jul 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0418
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A host computer system employs a touch sensitive display screen (touchscreen) as an input device. A controller receives positional signals from the touchscreen and transmits positional digital values indicative of (X, Y) coordinates of the point of contact of a touch device upon the touchscreen. The touch device may take the form of a touch pen which is electrically coupled to the controller or a human finger. The controller responds to different commands from the host computer to transmit inputs entered only by finger, only by pen, or by both finger and pen. Additional commands from the computer cause the controller to take a variety of different actions, including resizing the active area on the touchscreen which may be touched by the touch device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.