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Accelerated replication of multiple computer displays

  • US 5,704,042 A
  • Filed: 09/28/1993
  • Issued: 12/30/1997
  • Est. Priority Date: 03/19/1993
  • Status: Expired due to Term
First Claim
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1. In a system wherein a GUI runs on a host computer and generates graphic images by issuing GDI calls which make reference to device contexts, the improvement comprising:

  • a) maintaining similar device contexts in remote computers andb) maintaining substantially identical first program means on each computer, whichi) allows a single application program to selectively run on any of the computers, and no other computer, which generates a display on the selected computers,ii) replicates the display on all other computers,iii) allows a user of each computer to make annotations, containing graphical images, on the replicated display of each respective computer,iv) allows each respective user to selectivelyA) cause the first program means to copy the annotations made by the user to replicated displays of other computers, orB) cause the first program means to refrain from copying the annotations made by the user.

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