Automatic calibration of a capacitive touch screen used with a f

Details Automatic calibration of a capacitive touch screen used with a f Automatic calibration of a capacitive touch screen used with a f

1992-09-21

1994-02-01

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

345156, G09G 500

Patent

active

052835596

ABSTRACT:
A touch screen display is automatically calibrated during periods of active use or extended periods of non-use. Calibration contacts are cemented or embedded to the surface of a touch sensitive panel, and electrically connected to a reference during calibration. The reference is either electrical ground or a resistive, capacitive, or inductive load.

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IBM Technical Disclosure Bulletin, "Self-Calibration and Coordinate Conversion for a Touchpad or Touch Screen Computer Input Device", vol. 30, No. 4, Sep. 1987, pp. 1663-1666.

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