Electromagnetic pointing device using varying overlap of coils and conductive elements
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United States of America Patent
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Jun 19, 2001
Issued Date -
N/A
app pub date -
Sep 15, 1998
filing date -
Oct 23, 1997
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A micro-stick in which the movement of the micro-stick is detected inductively. The micro-stick is connected to an actuator element which varies interaction between an electromagnetic element and a number of conductive coils. In one embodiment, the coils are mounted on a printed circuit board mounted beneath the micro-stick. The micro-stick is mounted on a plate having a number of pins extending through the circuit board. On the other side of the circuit board is a flexible metal sheet which is contacted by the pins, and moved away from the coils in a direction in which the micro-stick is tilted. This increased separation of the metal sheet from the coils can then be detected.
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