Three dimensional position sensing apparatus and method for a display device
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United States of America Patent
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Issued Date -
May 26, 2005
app pub date -
Nov 22, 2004
filing date -
Nov 21, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A position sensing device for a display device includes an oscillator, a first and second electrode pair, a transparent conductive layer positioned on a display of the display device, first and second differential amplifiers, an amplifier and a processor. The first differential amplifier provides a first signal indicative of distance of the first electrode pair from the second body part of the operator in an x-direction. The output of the second differential amplifier provides a second signal indicative of distance of the second electrode pair from the second body part of the operator in a y-direction. The output of the amplifier provides a third signal indicative of distance of the transparent conductive layer from the second body part of the operator in a z-direction. The processor is operable to generate a three dimensional distance signal based on the output of the differential amplifiers and amplifier.
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