Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Patent
1993-04-30
1996-10-08
Hjerpe, Richard
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
345156, G09G 500
Patent
active
055636322
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.
REFERENCES:
patent: 3657475 (1972-04-01), Peronneau et al.
patent: 4327578 (1982-05-01), D'Angelo
patent: 4389711 (1983-06-01), Hatta et al.
patent: 4745565 (1988-05-01), Gawin et al.
patent: 4918262 (1990-04-01), Flowers et al.
patent: 5038142 (1991-08-01), Flowers et al.
Hjerpe Richard
Lao Lun-Yi
Microtouch Systems, Inc.
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