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. 02, 1990
Filed:
Nov. 28, 1988
Pierre Debord, Tourrettes sur Loup, FR;
Rene Glaise, Nice, FR;
International Business Machines, Armong, NY (US);
Abstract
An apparatus and method for correcting data words from a memory is provided in which coded data is divided into a plurality of multi-bit packages of b bits each. The coded data comprises n-bit words with r error correcting code bits and n-r data bits. The invention is capable of correcting one package which has suffered at least one hard failure and a single soft error located in a different package. The invention involves the use of an error correcting code which gives a first syndrome when the data word has suffered a first error coming from at least one error in a first package and a single error in a different second package, which also gives a second syndrome when the data word has suffered a second error coming from at least one error in the above first package, and a single error in a third package. The error correcting code is such that equality of the first and second syndromes results in the equality of the first and second errors.