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. 10, 2017
Filed:
Jun. 06, 2017
Applicant:
Western Digital Technologies, Inc., San Jose, CA (US);
Inventors:
Hans J. Richter, Palo Alto, CA (US);
Robert E. Eaton, San Jose, CA (US);
Andreas Moser, San Jose, CA (US);
Assignee:
Western Digital Technologies, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/60 (2006.01); G11B 21/12 (2006.01);
U.S. Cl.
CPC ...
G11B 5/6011 (2013.01); G11B 5/607 (2013.01); G11B 5/6052 (2013.01); G11B 5/6088 (2013.01); G11B 21/12 (2013.01);
Abstract
A data storage device is disclosed comprising a head actuated over a disk, wherein the head comprises a laser configured to heat the disk while writing data to the disk. At least four different laser powers are applied to the laser and a fly height of the head over the disk is measured at each laser power. A lasing threshold power for the laser is detected based on the measured fly heights.