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:
Aug. 18, 2020
Filed:
Jan. 25, 2019
International Business Machines Corporation, Armonk, NY (US);
Jeffrey Hemmett, St. George, VT (US);
Kerim Kalafala, Rhinebeck, NY (US);
Natesan Venkateswaran, Hopewell Junction, NY (US);
Debjit Sinha, Wappingers Falls, NY (US);
Eric Foreman, Fairfax, VT (US);
Chaitanya Ravindra Peddawad, Karnataka, IN;
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A system and method of performing variable accuracy incremental timing analysis in integrated circuit development includes generating a timing graph for interconnected components. The timing graph represents each pin as a node and each interconnection as an arc. A first node or arc is selected. First-level timing values are obtained for the first node or arc using a first timing model that provides a first level of accuracy. n timing models with corresponding n levels of accuracy are pre-selected. The first-level timing values are copied as second-level timing values and as timing values for every other one of the n levels of accuracy for the first node or arc. A second node or arc downstream from the first node or arc is selected. Second-level timing values for the second node or arc are obtained using a second timing model that provides a second level of accuracy.