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:
Mar. 23, 2010
Filed:
Sep. 14, 2007
Debjit Sinha, Wappingers Falls, NY (US);
Soroush Abbaspour, Fishkill, NY (US);
Ayesha Akhter, Austin, TX (US);
Gregory M. Schaeffer, Poughkeepsie, NY (US);
David J. Widiger, Pflugerville, TX (US);
Debjit Sinha, Wappingers Falls, NY (US);
Soroush Abbaspour, Fishkill, NY (US);
Ayesha Akhter, Austin, TX (US);
Gregory M. Schaeffer, Poughkeepsie, NY (US);
David J. Widiger, Pflugerville, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A preliminary static timing analysis run is performed to calculate the delay and slew as well as timing windows for each net in the design, followed by coupling analysis for each given aggressor-victim combination, and to calculate the noise effect on the timing of victim net. Given a set of functional groups that relate the coupled aggressors to each other, the worst set of aggressors are calculated that satisfy the constraints from the functional groups, based on the calculated impact of each aggressor on the victim. Similarly the set of aggressors which contribute to the maximum amount of inductive coupling noise effect on timing are calculated. Furthermore, the coupling noise impact of the reduced set of aggressors on the given victim line and adjust the delay value calculated in the preliminary static timing analysis run.