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.

Date of Patent:
Oct. 31, 1995

Filed:

Nov. 13, 1992
Applicant:
Inventors:

EuGene A Rodi, Minneapolis, MN (US);

Ferris T Price, deceased, late of Mayer, MN (US);

Assignee:

Unisys Corporation, Blue Bell, PA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 404 ; 371 403 ;
Abstract

A memory system providing capability for correction of multiple bit errors. The storage elements of the memory system are divided into four-bit nibbles, wherein storage of a single 32-word requires access to eight separate storage elements. A ninth storage element stores a four-bit error syndrome. All nine storage elements have single bit error correction/multiple bit error detection. All single bit errors are corrected directly within the individual storage element. Multiple bit errors within a single storage element are signaled to the interface controller which corrects the error using the stored four-bit error syndrome.


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