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:
Dec. 03, 2013
Filed:
Dec. 03, 2010
Igor Keller, Pleasanton, CA (US);
Joel R. Phillips, Oakland, CA (US);
Jijun Chen, San Jose, CA (US);
Igor Keller, Pleasanton, CA (US);
Joel R. Phillips, Oakland, CA (US);
Jijun Chen, San Jose, CA (US);
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
In one embodiment, a method of constructing an equivalent waveform model for static timing analysis of integrated circuit designs is disclosed. The method includes fitting time point coefficients (q) and known time delay values from a delay and slew model of a receiving gate from a timing library; determining waveform values (I) for input waveforms from the timing library; determining timing values (d) from a timing table in the timing library in response to the input waveforms of the timing library; and determining coefficients (q) by minimizing a residual of a delay equation.