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:
May. 12, 1998
Filed:
Jan. 27, 1995
Applicant:
Inventor:
Brendan J Babb, Anchorage, AK (US);
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 491 ; 371 30 ;
Abstract
A manipulated error detection matrix by which check bits are generated and decoded so that errors that are detected are next to each other and occur within a nibble. The invention consists of a check bit generator 14 which generates check bits in accordance with a nibble protect matrix according to a Modified Hamming Code which is configured to provide detection of triple and quadruple bit errors occurring within a nibble. The check bits are compared to those in memory 12 by a syndrome generator 16. An error corrector 18 and an error detector 20 decode syndrome bits.