Curvilinear linearization device for touch systems
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United States of America Patent
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Apr 7, 1998
Grant Date -
N/A
app pub date -
Aug 2, 1995
filing date -
Aug 2, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A contact input system with conductive segments made of a conductive ink and formed to follow a selected pattern that are located on a rectangular resistive surface. The conductive segments to the left of a T-shaped segment at the midpoint of each side are generally Z-shaped and those to the right of the midpoint are shaped like an inverted Z. The segments are disposed in a generally parabolic shape curving towards the center of the active surface area. The top bar of each segment overlaps at least a portion of the bottom bar of the adjacent conductive segment. The system thus has only two overlapping lines of conductive segments. The segments linearize electric fields in the resistive surface in order to provide greater accuracy in determining the location of a contact point on the surface.
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