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:
Aug. 15, 2006
Filed:
Jul. 12, 2002
John S. Kuslak, Blaine, MN (US);
Nadeem T. Chaudhry, Eagan, MN (US);
Ashiqur Rahman, Brooklyn Center, MN (US);
John S. Kuslak, Blaine, MN (US);
Nadeem T. Chaudhry, Eagan, MN (US);
Ashiqur Rahman, Brooklyn Center, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A method and apparatus is provided for handling parity errors within a data processing system. Each occurrence of a parity error is attributed to an addressable memory location or a block of memory locations that was being accessed when the error occurred. A memory location or a memory block is marked as unusable after a predetermined number of errors is attributed to that location or block, respectively. The predetermined number of errors that is allowed to occur prior to degradation could be two, or more. In one embodiment, the predetermined number of errors resulting in memory degradation is programmable.