Automatic touch screen calibration method
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United States of America Patent
Stats
-
Dec 1, 1987
Grant Date -
N/A
app pub date -
Apr 26, 1985
filing date -
Apr 26, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for automatically calibrating a touch screen used in conjunction with a graphic display is executed prior to every interactive session. Three points, defining perpendicular axes, are displayed and an operator is instructed to touch the touch screen at each of the points in succession. Coordinates for the three points output by the touch screen are checked for reasonableness and perpendicularity. If these checks are passed, a coordinate translation matrix is generated for converting touch screen coordinates into display coordinates.
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Family
International Classification(s)
Cited Art Landscape
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