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.

Date of Patent:
Nov. 28, 2017

Filed:

Nov. 19, 2014
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Gabor Drasny, Poughkeepsie, NY (US);

Gavin B. Meil, Round Rock, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/50 (2006.01);
U.S. Cl.
CPC ...
G06F 17/5022 (2013.01); G06F 17/5031 (2013.01); G06F 17/5045 (2013.01); G06F 17/5059 (2013.01); G06F 2217/06 (2013.01); G06F 2217/62 (2013.01); G06F 2217/84 (2013.01);
Abstract

A design tool can implement phase algebra based design evaluation to evaluate a circuit design with a compact representation of numerous waveforms without simulating the individual waveforms. The design tool can determine an input sequence of signal transition representations associated with an input net of a component in a register transfer level circuit design, where each signal transition representation represents a nondeterministic transition from a previous signal state to one or more possible signal states. Determining the input sequence of signal transition representations includes determining that a subsequence of the input sequence of signal transition representations indicates at most one transition within the subsequence of the input sequence. The design tool can determine, based on the indicated component and on the determination that the subsequence indicates at most one transition, an output sequence of signal transition representations derived from the input sequence of signal transition representations.


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