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. 18, 2002
Filed:
Feb. 19, 2000
Jon Eric Josephson, Fort Collins, CO (US);
John D Wanek, Denver, CO (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A method and system for determining locations of interconnect repeater farms in the physical design of an integrated circuit is presented. The optimal unconstrained repeater locations are calculated for a given routing list of interconnect nets. Repeater farms are defined in areas of concentration of the calculated optimal unconstrained repeater locations. The optimal constrained repeater locations are then calculated such that the repeater locations are constrained to the repeater farms. A set of sub-optimal interconnect nets which are hurt the most from the repeater farm constraint are selected. The optimal unconstrained repeater locations for the selected set of sub-optimal interconnect nets are then calculated and additional repeater farms are defined to encompass areas of concentration of the optimal repeater locations of the sub-optimal interconnect nets. The process is repeated until desired performance gain is achieved.