Placement optimization system aided by CAD

Details Placement optimization system aided by CAD Placement optimization system aided by CAD

1990-12-04

1993-02-16

Smith, Jerry

Boots, shoes, and leggings

364491, G06F 1560

Patent

active

051876680

ABSTRACT:
There is provided a placement optimization system for determining layout in printed circuits and semiconductor substrates, comprising input means for inputting circuit connection information, placement optimization means for deriving wiring density distribution on the basis of the circuit connection information, evaluating the height and/or width of the wiring region statistically estimated from the wiring density distribution, and output means for outputting the resultant placement position information. Further, the placement optimization system may comprise means for collecting placement elements into sets, determining placement of the sets, then developing the sets into elements, and determining optimum placement positions of the elements.

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patent: 4613941 (1986-09-01), Smith et al.
patent: 4615011 (1986-09-01), Linsker
patent: 4630219 (1986-12-01), DiGiacomo et al.
patent: 4754408 (1988-06-01), Carpenter et al.
patent: 4815003 (1989-03-01), Putatunda et al.
patent: 4918614 (1990-04-01), Modarres et al.

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