Electronic whiteboard system eraser
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United States of America Patent
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-
Sep 3, 2002
Grant Date -
N/A
app pub date -
Sep 30, 1997
filing date -
Oct 1, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An eraser for use on an electronic whiteboard with a protrusion area on the erasing surface forming a convex area on the erasing surface for establishing a positive point of contact with the whiteboard; an electronic whiteboard system including such an eraser, a controller for storing data relating to information written on and erased from the whiteboard data, and a filter for preventing the storage of digital data relating to contacts with the whiteboard not attributable to normal writing or erasing actions.
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