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SERVER APPARATUSES, SERVER CONTROL PROGRAMS, AND CLIENT APPARATUSES IN A COMPUTER SYSTEM

  • US 20070192509A1
  • Filed: 02/13/2007
  • Published: 08/16/2007
  • Est. Priority Date: 02/14/2006
  • Status: Active Grant
First Claim
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1. A server apparatus for a computer system which causes drawing data created at a server apparatus to be transmitted to a client apparatus and displayed on its display screen, the server apparatus comprising:

  • a preceding drawing data storage unit which stores drawing data on the preceding screen transferred to the client apparatus;

    a present drawing data storage unit which stores drawing data on a created present screen;

    an area dividing unit which divides the drawing data into a plurality of drawing areas;

    a comparison decision unit which compares the present drawing data stored in the present drawing data storage unit with the preceding drawing data stored in the preceding drawing data storage unit for each of the drawing areas divided by the area dividing unit and determines whether there is a change in the preceding drawing data for each of the drawing areas in the present drawing data; and

    a transmission control unit which transmits to the client apparatus the drawing data in a drawing area determined to have a change by the comparison decision unit, except for a drawing area of the present drawing data determined to have no change by the comparison decision unit.

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