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:
Sep. 20, 2011
Filed:
Mar. 13, 2008
Fadi Y. Busaba, Poughkeepsie, NY (US);
Lawrence Joseph Powell, Round Rock, TX (US);
Martin Stanley Schmookler, Austin, TX (US);
Michael Thomas Vaden, Austin, TX (US);
David Allan Webber, Poughkeepsie, NY (US);
Fadi Y. Busaba, Poughkeepsie, NY (US);
Lawrence Joseph Powell, Round Rock, TX (US);
Martin Stanley Schmookler, Austin, TX (US);
Michael Thomas Vaden, Austin, TX (US);
David Allan Webber, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of discovering a fault in a circuit is disclosed. The method comprises generating a first result of a selected function by performing the selected function on an operand, wherein the selected function employs a mask. Once the function is performed, an antimask of the mask is created, and the modulo of the antimask is calculated. A modulo function of the first result of the selected function is calculated to obtain a third result. A modulo of the operand is then calculated to obtain a fourth result, and a second function is then performed on the second result and the third result to obtain a fifth result. In response to comparing the fifth result to the fourth result, a signal is propagated to indicate a fault in the circuit.