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:
Apr. 14, 2020
Filed:
Sep. 28, 2018
International Business Machines Corporation, Armonk, NY (US);
Jason R. Baumgartner, Austin, TX (US);
Robert L. Kanzelman, Rochester, MN (US);
Pradeep Kumar Nalla, Sheffield, GB;
Raj Kumar Gajavelly, Andhra Pradesh, IN;
Dheeraj Baby, Kerala, IN;
International Business Machines Coporation, Armonk, NY (US);
Abstract
A computing system determines a first set of registers having constant next-state functions in the netlist. The computing system identifies an observable gate in fan-out of a register in the first set, wherein an observable gate is a gate that is critical to a verification or synthesis context. The computing system identifies a second set of reducible registers in the fan-in of the observable gate. The computing system modifies at least one of an initial value and a next-state function of at least one reducible register of the second set to reflect an observable value of the at least one reducible register observed at the observable gate. The computing system simplifies one or more logic gates implementing the observable gate and the fan-in of the observable gate by eliminating a reference to a constant next-state function register in the first set of registers.