Annotation of computer video displays
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United States of America Patent
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-
Jul 6, 1999
Issued Date -
N/A
app pub date -
Apr 7, 1997
filing date -
Mar 19, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system in which multiple computers engage in a collaborative video conference. One computer generates a common image which is distributed to the other computers. The invention allows the users of the other computers to annotate (that is, mark up, by drawings and text) the image at their respective computers. The invention replicates the annotations at the other computers. One type of annotation allowed is 'highlighting,' wherein a user drags a cursor across a display, and the invention leaves a colored trail behind the cursor, which is transparent, and does not obscure the underlying images.
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