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. 20, 2011
Filed:
Jul. 01, 2008
Frank D. Ferraiolo, New Windsor, NY (US);
Daniel M. Dreps, Georgetown, TX (US);
Kevin C. Gower, LaGrangeville, NY (US);
Robert J. Reese, Austin, TX (US);
Frank D. Ferraiolo, New Windsor, NY (US);
Daniel M. Dreps, Georgetown, TX (US);
Kevin C. Gower, LaGrangeville, NY (US);
Robert J. Reese, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Shadow selection logic is used to select a driver bit position as a shadowed driver value, and line drivers to transmit data for the selected driver bit position and the shadowed driver value on separate link segments of a bus. In addition shadow compare logic is used to compare a selected received value with a shadowed received value from the bus and identify a miscompare in response to a mismatch of the compare, and shadow counters to count a rate of the miscompare relative to a bus error rate over a period of time. A defective link segment is identified in response to the rate of the miscompare within a predefined threshold of the bus error rate.