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. 07, 2014
Filed:
Oct. 04, 2012
Hgst Netherlands B.v., Amsterdam, NL;
Kei Akiyama, Yokohama, JP;
Sridhar Chatradhi, San Jose, CA (US);
Jonathan Darrel Coker, Rochester, NY (US);
Martin Aureliano Hassner, Mountain View, CA (US);
Kirk Hwang, Palo Alto, CA (US);
Roger William Wood, Gilroy, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A technique for recovering of 'squeezed' sectors in a set of sequential sectors such as are used in Shingled Magnetic Recording (SMR) is described. Embodiments of the invention use a programmable erased sector recovery scheme, which is a concatenation of a 'Cauchy-type' track erasure correction code, together with a media-error correction code that generates N-weighted parity-sectors per track and is capable of replacing up to N-erased sectors per track in any possible combination.