The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2001
Filed:
Apr. 17, 1998
Pedja Raspopovic, Cupertino, CA (US);
Ranko Scepanovic, San Jose, CA (US);
Alexander E. Andreev, Sunnyvale, CA (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
A method for optimizing the routing of nets in an integrated circuit device, said method comprising the steps of dividing an integrated circuit design with lines in a first direction and lines in a second direction, wherein said first direction is substantially orthogonal to said second direction, forming a routing graph with vertices corresponding to locations where lines in said first direction and lines in said second direction cross and edges connect vertices, for each edge in a plurality of edges in said routing graph, computing an individual edge occupancy value, for an edge in said plurality of edges, computing a penalty value as a function of the individual edge occupancy value of a different edge, and routing a net as a function of said penalty value.