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:
Feb. 13, 2007
Filed:
Sep. 17, 2003
Martin Aureliano Hassner, Mountain View, CA (US);
Vipul Srivastava, San Jose, CA (US);
Nyles Heise, San Jose, CA (US);
Martin Aureliano Hassner, Mountain View, CA (US);
Vipul Srivastava, San Jose, CA (US);
Nyles Heise, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands, B.V., Amsterdam, NL;
Abstract
Techniques for correcting data bytes on a data storage disk that have been rewritten are provided. A data storage system generates a long block membership (LBM) byte for each sector. The LBM bytes indicates whether the sector is part of a block of sectors. A data storage system can determine whether a failed sector is part of a long block. The data storage system adds the LBM contributions to the CRC and ECC bytes and then attempts to correct the failed sector. If the correction process is successful, the data storage system declares a miscorrection. If the error is not successfully corrected, the data storage system again adds the LBM contributions to the CRC and ECC bytes and then attempts to correct the failed sector. If the correction process is successful, the data correction is accepted if the error pattern and the check byte overlap is greater than a threshold.