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:
Oct. 18, 1994
Filed:
Mar. 10, 1993
Applicant:
Inventors:
Chingshun Cheng, Austin, TX (US);
Paul J Roy, Round Rock, TX (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
371 213 ; 371 401 ; 371 491 ;
Abstract
A method for testing directly addressable memory in a computer system uses address sensitive test data. When a memory error occurs, or when an initial testing of the memory indicates an error, the affected locations are retested with selected address sensitive memory test patterns. Proper address sensitive pattern selection allows all of the data bits, ECC data bits and address parity bits to be tested.