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Graphic drawing apparatus

  • US 5,712,656 A
  • Filed: 07/10/1995
  • Issued: 01/27/1998
  • Est. Priority Date: 08/08/1994
  • Status: Expired due to Term
First Claim
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1. A graphic drawing apparatus which allows drawing of a graphic on a graphic drawing plane and allows displaying of a part of the drawing plane on a screen, the apparatus comprising:

  • a screen storage memory for storing a region to be displayed on the screen and contents to be displayed;

    a graphic information memory for storing information related to a graphic to be drawn on the screen, the stored information for the graphic to be drawn including a graphic shape type and two coordinates of a graphic frame rectangle, the graphic frame rectangle having the graphic totally circumscribed therein, the two coordinates being coordinates of both endpoints of a diagonal of the graphic frame rectangle; and

    a graphic selection processor which performs a comparison of the two coordinates of the graphic frame rectangle and the region to be displayed on the screen, and which, in accordance with the comparision, includes the graphic to be drawn on the screen by adding the graphic to be drawn to the contents to be displayed.

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