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:
Aug. 31, 1999
Filed:
Nov. 17, 1997
Charles Edwin Cox, San Jose, CA (US);
Martin Hassner, Palo Alto, CA (US);
Ralf Kotter, Palo Alto, CA (US);
Arvind Patel, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and means for enhancing the error detection and correction capability obtained when a plurality of data byte strings are encoded in a two-level, block-formatted linear code using codeword and block-level redundancy by logically summing the data byte strings and mapping the logical sum and the data byte strings into counterpart codewords including codeword check bytes in accordance with the same linear error correction code. Next, the codewords are logically summed. The codewords and their logical sum are interleaved in a predetermined pattern prior to being recorded on a storage device or the like. On read back, the codewords of a block and their logical sum are syndrome processed to resolve any identified errors within the correction capability of any single word and any errors within the correction capability of any single word and block-level redundancy, and to provide signal indication when the correction capacity has been exceeded.