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:
May. 31, 2016
Filed:
May. 21, 2013
Applicant:
Hgst Netherlands B.v., Amsterdam, NL;
Inventors:
Yasutaka Nishida, Fujisawa, JP;
Masato Shiimoto, Odawara, JP;
Hiroyuki Katada, Odawara, JP;
Ikuya Tagawa, Hiratsuka, JP;
Junguo Xu, Kasumigaura, JP;
Assignee:
HGST Netherlands B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/00 (2006.01); G11B 5/60 (2006.01);
U.S. Cl.
CPC ...
G11B 5/6076 (2013.01);
Abstract
A hard-disk drive having a structurally efficient magnetic head slider utilizes a MAMR-based spin torque oscillator (STO) for head-disk contact detection and for flying height sensing. Contact detection and spacing estimation techniques consider the nominal temperature difference, and thus different criteria, between read and write operations.