Coordinates input apparatus
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United States of America Patent
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-
May 18, 2004
Grant Date -
Dec 27, 2001
app pub date -
May 29, 2001
filing date -
Jun 27, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved coordinates input apparatus for designating a particular set of coordinates in three-dimensional space comprises a first magnet and a second magnet disposed so that respective, identical magnetic poles thereof are opposite each other with a gap therebetween. The second magnet is disposed so as to be tiltable in response to forces acting thereupon. The forces include a repulsive force arising between the first magnet and the second magnet and a pressing force exerted on the second magnet. A plurality of magnetoelectric transducers are disposed opposite the second magnet and surrounding the gap, and produce output voltages having values that vary according to a change in the gap between the magnetoelectric transducers and the second magnet, such that the differential voltage values of the transducer outputs indicate a set of X,Y coordinates in two-dimensional space.
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