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:
Feb. 23, 1999
Filed:
Dec. 30, 1996
Applicant:
Inventors:
Mitchell A Bauman, Circle Pines, MN (US);
Donald W Mackenthun, Fridley, MN (US);
Gary J Lucas, Pine Springs, MN (US);
James L Federici, Shoreview, MN (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G11C / ;
U.S. Cl.
CPC ...
371 491 ; 371 511 ; 39518203 ; 39518506 ; 711-3 ; 711113 ; 711119 ;
Abstract
Method and apparatus for detecting and correcting memory storage data errors in a system utilizing parity error detection. An error detected in the memory storage device results in a parity error being reported, thereby causing the corresponding address location to be deactivated. Once deactivated, no further reading or writing is performed at that address location for a predetermined time period. The parity error reporting and address deactivation is accomplished without an access time penalty and requires a reduced number of I/O pins.