Electronic portable pen apparatus and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 10, 2003
Grant Date -
N/A
app pub date -
Aug 18, 1999
filing date -
Aug 18, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wireless pen apparatus for producing signals representative of writing by a user, including: a wireless pen; a removable cap on the pen; and, when the cap is removed from the pen and placed at a reference position, communicating wave energy between at least one location on the pen and at least one location on the cap for determining the position of the at least one location on the pen with respect to the reference position of the cap, and for producing signals that depend on the determined position of the at least one location on the pen.
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