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:
Jul. 05, 2016
Filed:
Mar. 23, 2015
Applicant:
Western Digital Technologies, Inc., Irvine, CA (US);
Inventors:
Poornima Nookala, Irvine, CA (US);
Phillip Scott Haralson, Huntington Beach, CA (US);
Assignee:
Western Digital Technologies, Inc., Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01); G11B 20/10 (2006.01); G11B 7/1267 (2012.01); G11B 7/007 (2006.01); G11B 7/1263 (2012.01);
U.S. Cl.
CPC ...
G11B 7/1267 (2013.01); G11B 7/00736 (2013.01); G11B 7/1263 (2013.01); G11B 20/10009 (2013.01); G11B 20/10481 (2013.01);
Abstract
A data storage device is disclosed comprising a disk and a head actuated over the disk, wherein the head comprises a laser configured to heat the disk while writing data to the disk. The laser power is adjusted and a pattern is written to a target track at the adjusted laser power. The pattern is read from the target track to generate a read signal, and a quality metric is generated based on the read signal. The process is repeated at least once, and a write power for the laser is configured based on a slope of the quality metric.