Electromagnetic active trackball control system using magnets energized in sequence which cause the trackball to move
US6144370A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1997 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Apr 1, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0383
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A track ball control system which is attachable to a computer system that has a display screen on which a cursor is positionable, including at least one track ball regulator for providing physical control of the position of the track ball in response to signals from the control system. These signals depend on the location of the cursor on the display screen and cause the track ball to change in movement. This change in movement may be a vertical change, and/or an azimuthal change. The operator does not control this change in movement except indirectly by knowingly or unknowingly positioning the cursor in a position which causes the signals to be sent to the track ball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.