XY velocity controller
US4983786A · kind A · utility
Assignee
Key dates
| Filing date | Jan 17, 1990 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Jan 17, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04146
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A XY control system for controlling vector movement in two mutually perpendicular directions (for example for computer cursor control, i.e. emulating a conventional computer mouse) uses a XY pressure sensitive digital pad or more preferably a XYZ pressure sensitive digital pad generating different signals based on the selected location at which pressure is applied to the pad. These signals are divided into X or Y and a directional signal and then converted into a velocity signal for controlling the vector motion in the required direction dependent on the selected location for application of pressure to the pad and at a velocity the magnitude of which is proportional to the displacement of the selected location from a datum area on the pad, or in the case of a XYZ pad dependent on both displacement and the amount of pressure applied at the selected location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.