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:
Sep. 30, 2014
Filed:
Oct. 31, 2012
International Business Machines Corporation, Armonk, NY (US);
Nathan Buck, Underhill, VT (US);
Brian Dreibelbis, Underhill, VT (US);
John P. Dubuque, Jericho, VT (US);
Eric A. Foreman, Fairfax, VT (US);
Peter A. Habitz, Hinesburg, VT (US);
David J. Hathaway, Underhill, VT (US);
Jeffrey G. Hemmett, Bolton Valley, VT (US);
Natesan Venkateswaran, Hopewell Junction, NY (US);
Chandramouli Visweswariah, Croton-on-Hudson, NY (US);
Vladimir Zolotov, Putnam Valley, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Systems and methods for avoiding restrictions on cell placement in a hierarchical design of integrated circuits with multi-patterning requirements are described. The method may be provided implemented in a computer infrastructure having computer executable code tangibly embodied on a computer readable storage medium having programming instructions operable to assign a color to each pattern shape in a first cell, assign a color to each pattern shape in a second cell, characterize quantities of interest for each pattern shape in the first cell, determine that the colors assigned in the first cell are all one to one mappable to the colors assigned in the second cells, characterize quantities of interest for each pattern shape in the second cell using the quantities of interest characterized for the first cell, and model the quantities of interest for the first cell and the second cell.