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System for designing a placement of a placement element

  • US 5,475,608 A
  • Filed: 10/15/1992
  • Issued: 12/12/1995
  • Est. Priority Date: 10/15/1991
  • Status: Expired due to Term
First Claim
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1. A system for designing a placement of a placement element, for use in a placement designing system, comprising:

  • a placement element storage means for storing placement element data representing placement elements;

    a placement/routing means for setting a placement of said placement element, said placement/routing means comprising,a placement area for placing said placement elements, said placement area including a unit area data storage means for storing unit area data representing unit areas, said unit areas split from said placement area, wherein a respective placement element is placed in each unit area,a plurality of intra-virtual-placement-area placement element position storage means, provided for each type of placement element for virtually storing placement element data in the virtual placement areas,a pointer storage means, for specifying placement element data stored in said intra-virtual-placement-area placement element position storage means to which said unit areas correspond, anda placement control means for setting the placement of placement elements in said placement area such that said placement elements whose placement element data are stored in said virtual placement areas are placed in respective unit areas in said unit area data storage means, according to the placement element data specified by said pointer storage means; and

    a placement output means for outputting the result of setting said placement.

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