High efficiency passive pointer digitizer system
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United States of America Patent
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-
Feb 3, 1998
Grant Date -
N/A
app pub date -
Jul 15, 1995
filing date -
Sep 15, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A high efficiency passive pointer digitizer system comprising first and second sets of orthogonal and substantially coplanar conductors, a signal generator for generating a driving signal selectively along the first set of conductors, a movable pointer inductively coupled to the first and second sets of conductors, the pointer including a tuned circuit responsive to the driving signal for radiating a positional signal, a signal detector for detecting a positional signal induced in the second set of conductors by the tuned circuit responding to the driving signal, and a signal processor coupled to the signal generator and the signal detector for determining the location of the pointer relative to the conductors.
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