Accelerated replication of multiple computer displays

Details Accelerated replication of multiple computer displays Accelerated replication of multiple computer displays

1993-09-28

1997-12-30

Lall, Parshotam S.

395330, 395340, G06F 1338

Patent

active

057040427

ABSTRACT:
A system wherein multiple computers engage in a video conference. The invention creates a common visual image which is displayed by all computers. However, the invention does not distribute a bit map of the image to all computers. Instead, the invention distributes the commands from which the image is created.
Further, the distributed commands rely on data structures, which define parameters such as pen color, background color, line width, etc. The data structures are stored in each computer. When a data structure is changed, the invention does not immediately inform all other computers of the change, but waits until necessary.

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