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:
Apr. 11, 2017
Filed:
Mar. 31, 2016
Applicant:
Western Digital Technologies, Inc., Irvine, CA (US);
Inventor:
Phillip S. Haralson, Huntington Beach, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/00 (2006.01); G11B 5/03 (2006.01); G11B 5/09 (2006.01); G11B 7/1263 (2012.01); G11B 5/596 (2006.01);
U.S. Cl.
CPC ...
G11B 7/1263 (2013.01); G11B 5/59688 (2013.01); G11B 2005/0021 (2013.01);
Abstract
A data storage device is disclosed comprising a disk comprising a plurality of data sectors and a plurality of servo sectors, and a head actuated over the disk, wherein the head comprises a laser configured to heat the disk while writing data to the disk. When the head is over a first data sector not being written, a first prelase bias is applied to the laser, and when the head is over a servo sector, a second, lower prelase bias is applied to the laser. When the head is over a second data sector being written, a write bias higher than the first prelase bias is applied to the laser.