Methods and apparatus for supplying power to touch input devices in a touch sensing system
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United States of America Patent
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Sep 26, 2006
Grant Date -
Mar 28, 2002
app pub date -
Jun 8, 2001
filing date -
Sep 26, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for transmitting power to active touch stimulating devices associated with a touch sensing apparatus. In this invention four methods of providing power supply to the touch-input device are presented. These methods are: EM induction transmission using a single loop antenna, EM induction transmission using a conductive layer, acoustic transmission through air, and acoustic transmission through an acoustic conductive layer.
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