Electronic pen input device and coordinate detecting method therefor
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United States of America Patent
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May 24, 2005
Grant Date -
Oct 17, 2002
app pub date -
Mar 22, 2002
filing date -
Apr 12, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A electronic pen input device and a coordinate determining method are provided. The electronic pen input device includes an optical 3-dimensional detecting device for detecting orientation angles of a centerline of the pen relative to a ground and a height of the pen over a writing surface, a 3-axis accelerometer for detecting a movement of the pen, and a communication means for sending the detected information to a post processing device.
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