Method and apparatus for reducing noise in an electrostatic digi

Details Method and apparatus for reducing noise in an electrostatic digi Method and apparatus for reducing noise in an electrostatic digi

1997-11-25

2000-06-27

Shalwala, Bipin

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

345179, 178 1801, 178 1803, G08O 2106

Patent

active

060812591

ABSTRACT:
An electrostatic digitizing panel capable of filtering offset loads such that stylus or fingertip position information is more accurately obtained. The present invention utilizes a new method of calculating the stylus position such that the digitizer surface is sensitive only to the electric field concentrated in the area occupied by the stylus or fingertip. Thus, the panel has a substantially reduced sensitivity to fields emitted from a user's hand or noise fields emitted from the surface of a display, or the like, coupled to the panel.

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