Method of and apparatus for the elimination of the effects of internal interference in force measurement systems, including touch - input computer and related displays employing touch force location measurement techniques
US5563632A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1993 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Apr 30, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04142
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is disclosed, particularly, though by no means exclusively, useful in touch--screen computer CRT display systems and the like, and more generally in other force and/or torque measurement systems, as in weighing and the like, in which (1) lineal and/or rotational acceleration of the system is sensed in response to inertial interference effects such as tilt or movement that introduce errors into the force and/or torque measurements, and/or (2) inertial error correction from the force data itself is obtained, such as derivative order corrections; and such data is used to correct the force and/or torque measurements. A novel calibration technique for deriving appropriately descriptive coefficients to the particular system for the correcting data, is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.