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:
Mar. 15, 2016
Filed:
Nov. 06, 2013
Applicant:
Hgst Netherlands B.v., Amsterdam, NL;
Inventors:
Sridhar Chatradhi, San Jose, CA (US);
Martin Aureliano Hassner, Mountain View, CA (US);
Kirk Hwang, Palo Alto, CA (US);
Satoshi Yamamoto, San Jose, CA (US);
Assignee:
HGST Netherlands B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 20/18 (2006.01); G06F 11/00 (2006.01); G06F 11/10 (2006.01); G11B 20/12 (2006.01);
U.S. Cl.
CPC ...
G06F 11/1076 (2013.01); G11B 20/1833 (2013.01); G11B 2020/1222 (2013.01);
Abstract
Data storage devices using a two-level ECC scheme are described. Embodiments of the invention allow the recovery of sectors in a squeezed group of tracks in a that includes both a single track level ECC scheme and a track band ECC scheme that functions across the set of tracks in the band. The track band ECC scheme uses additional parity information calculated using input data from multiple tracks to allow correction across tracks.