Patent Number: 7,102,621

Title: Force measurement system correcting for inertial interference

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.

Inventors: Roberts; Jerry B. (Arlington, MA)

Assignee: 3M Innovative Properties Company

International Classification: G09G 5/00 (20060101)

Expiration Date: 9/05/02018