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:
Sep. 18, 2007
Filed:
Apr. 17, 2003
Robert Alan Cargnoni, Austin, TX (US);
Guy Lynn Guthrie, Austin, TX (US);
Kirk Samuel Livingston, Austin, TX (US);
William John Starke, Round Rock, TX (US);
Robert Alan Cargnoni, Austin, TX (US);
Guy Lynn Guthrie, Austin, TX (US);
Kirk Samuel Livingston, Austin, TX (US);
William John Starke, Round Rock, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of correcting an error in an ECC protected mechanism of a computer system, such as a cache or system bus, by applying data with a number of bits N to an error correction code (ECC) matrix to yield an error detection syndrome, wherein the ECC matrix has a plurality of rows and columns with a given column corresponding to a respective one of the data bits, and selected bits are set in the ECC matrix along each column and each row such that encoding for the ECC matrix allows N-bit error correction and (N−1)-bit error detection. When an error is detected and after it is corrected, the corrected data is inverted and then rewritten to the cache array. The corresponding inversion bit for this entry is accordingly set to indicate that the data as currently stored is inverted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile