Annotation of computer video displays

Details Annotation of computer video displays Annotation of computer video displays

1997-04-07

1999-07-06

Rinehart, Mark H.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

345331, G06F 1338, G06F 1517

Patent

active

059206942

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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