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Computer based drawing management system

  • US 4,665,555 A
  • Filed: 03/11/1985
  • Issued: 05/12/1987
  • Est. Priority Date: 03/11/1985
  • Status: Expired due to Term
First Claim
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1. A system suitable for electronically storing, revising, and displaying technical drawings comprising:

  • mass storage means for storing multiple data sets, each data set comprising digital data defining a pixel representation of a different technical drawing;

    operator input means for enabling an operator to selectively identify a data set stored in said mass storage means;

    monitor means for displaying a drawing; and

    control means responsive to said operator input means for controlling said monitor means to display at least a portion of the drawing identified by said input means, said control means including;

    pixel memory means for storing a bit map of a drawing;

    processor means for retrieving each data set identified by said operator input means and responsive to the digital data therein for loading a bit map into said pixel memory means;

    means responsive to said bit map stored in said pixel memory means for causing said monitor to display pixels representing the identified drawing;

    said operator input means including means enabling an operator to define a DRAWING REVISION MODE and to initiate the generation of primitives, each primitive defining an elementary display instruction and related parameter data;

    said processor means including means reponsive to each of said generated primitives for revising said bit map stored in said pixel memory means; and

    cache means for temporarily storing each of said generated primitives.

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