Pen-shaped coordinate pointing device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 5, 2004
Grant Date -
Jun 13, 2002
app pub date -
Sep 21, 2001
filing date -
Dec 13, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
In an input pen having a pen-shaped casing, a ferrite core with a coil wound thereon and a ferrite chip are placed opposed to each other via an O-ring. The ferrite chip has a projection. When the input pen is operated, the projection and the ferrite core are moved closer together. When the ferrite chip is moved closer to the ferrite core during operation, the projection is placed substantially close to the ferrite core. Therefore, high responsivity is ensured without moving the ferrite chip into the coil, and there is no need to form an opening or a cavity in the ferrite core.
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