Substantially rigid capacitive joystick designs
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United States of America Patent
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-
May 3, 2005
Grant Date -
May 27, 2004
app pub date -
Aug 4, 2003
filing date -
Nov 21, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An economical, force-sensing 'stiff' capacitive joystick includes a user-manipulable handle coupled to an electrically conductive drive plate, and an electrically conductive surface spaced apart from the drive plate. In the preferred embodiment, one or both of the drive plate and the conductive surface are segmented to produce multiple capacitive sensing elements, such that a force applied to the handle causes a slight deflection of the drive plate, enabling the force to be computed in at least two dimensions through changes detectable in the capacitive sensing elements. One or more electrical controls may be provided on the handle to accommodate different functions. For convenient construction, the electrically conductive drive plate is non-segmented, and the electrically conductive surface forms part of a printed-circuit board having a segmented pattern.
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