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:
Jun. 19, 2001
Filed:
Mar. 31, 1998
Michael C. McSherry, Portland, OR (US);
Richard E. Strobel, Vancouver, WA (US);
Robert A. Todd, Tigard, OR (US);
Paul M. Nugyen, Beaverton, OR (US);
Other;
Abstract
A parasitic extraction tool (PEX) is provided to generate electrical modeling data for an integrated circuit (IC) design, e.g. a deep sub-micron IC design. The PEX includes a read function for reading extracted connectivity and geometrical data of various layout cell hierarchies of the IC design, that are organized and indexed by layout nets. The PEX also includes a write function for writing generated electrical modeling data into a parasitic database (PDB), which is physically organized to accommodate physical storage of the electrical modeling data in multiple physical media, and concurrent usage of the electrical data by multiple client applications, e.g. post layout analysis tool. In one embodiment, the PDB further includes an application interface that shields the physical organization of the PDB, and a logical abstraction of the physical organization to facilitate implementation of the application interface.