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.

Date of Patent:
Jun. 08, 2021

Filed:

Jun. 24, 2019
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Roy D. Cideciyan, Rueschlikon, CH;

Simeon Furrer, Altdorf, CH;

Mark A. Lantz, Adliswil, CH;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 20/18 (2006.01); H03M 13/15 (2006.01); H03M 13/27 (2006.01); G11B 20/12 (2006.01); G11B 5/008 (2006.01);
U.S. Cl.
CPC ...
G11B 20/1833 (2013.01); G11B 20/1201 (2013.01); G11B 20/1886 (2013.01); H03M 13/1515 (2013.01); H03M 13/27 (2013.01); H03M 13/2792 (2013.01); G11B 5/00813 (2013.01); G11B 2020/184 (2013.01);
Abstract

In one embodiment, a method includes writing a data set to a sequential access medium. The method also includes reading the data set after being written in a read-while-write process to identify faulty encoded data blocks, each of the faulty encoded data blocks including at least one faulty codeword. Moreover, the method includes rewriting a correct version of a first of the encoded data blocks in a first encoded data block set to the rewrite area of the sequential access medium selected from a predetermined subset of logical tracks. The predetermined subset of logical tracks includes D1+D2+1 logical tracks. Only one encoded data block from a particular sub data set is rewritten in a single encoded data block set in the rewrite area.


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