Capacitive mouse
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United States of America Patent
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Oct 19, 2010
Grant Date -
Feb 23, 2006
app pub date -
Oct 18, 2005
filing date -
Nov 4, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pointing device some or all of whose elements are made from capacitive sensors. Such elements may include a rotary motion detector which includes a rotating member and a plurality of fixed capacitive detecting members; a rolling ball with patterned conductive surface and a plurality of fixed capacitive detecting members; capacitive touch sensors or capacitive switches to serve as mouse buttons; and a scrolling wheel, knob, or touch surface built from capacitive sensors. The pointing device further includes a capacitance measuring circuit and processor to measure variations of capacitance on the various capacitive elements and to determine the movement of and other activations of the mouse.
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