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. 24, 2007
Filed:
Jun. 24, 2004
Kenneth Michael Caron, Rochester, MN (US);
Robert Lowell Kanzelman, Rochester, MN (US);
Scott Henry Mack, Rochester, MN (US);
Lance Gordon Thompson, Rochester, MN (US);
Mark Allen Williams, Pleasant Valley, NY (US);
Kenneth Michael Caron, Rochester, MN (US);
Robert Lowell Kanzelman, Rochester, MN (US);
Scott Henry Mack, Rochester, MN (US);
Lance Gordon Thompson, Rochester, MN (US);
Mark Allen Williams, Pleasant Valley, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, apparatus, system, and signal-bearing medium that in an embodiment apply a latch behavior to a first and second netlist, where the latch behavior exhibits transparent behavior. Flush enabling conditions are applied to the first netlist and a second netlist. For each latch in a first scan chain in the first netlist, a corresponding latch in the second netlist is found. Cones of logic are then extracted from the latches under the constraints enabling the flush operation, and the cones of logic are compared for functional equivalence. If all the cones are functionally equivalent, then the flush reset states of the netlists are functionally equivalent. If at least one of the cones is not functionally equivalent, then the flush reset states of the two netlists are not equivalent.