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System and method for efficient computer workstation screen updates

  • US 5,491,780 A
  • Filed: 08/25/1994
  • Issued: 02/13/1996
  • Est. Priority Date: 09/15/1992
  • Status: Expired due to Term
First Claim
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1. An improved subsystem for a computer workstation adapted for connection into a network of one or more other computers, said computer workstation including a screen, means for sending requests to the screen to update the contents of portions thereof, and means for transmitting the contents of said portions to other computers in the network, said improvement comprising:

  • means, responsive to said requests, for identifying said portions of the screen for updating by said requests;

    means for selecting updated contents corresponding to said portions for transmissions to another computer;

    means for generating a list of entries, each corresponding to one of said portions;

    means for detecting if any of said portions of said screen has been updated a first time and a second time between said transmissions; and

    means for deleting from said list, upon said detecting, one of said entries corresponding to one of said portions updated said first time and overlapped by said one of said portions updated said second time.

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