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. 22, 2018
Filed:
Feb. 17, 2017
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventors:
Wenzhong Zhu, Apple Valley, MN (US);
Alfredo Sam Chu, Prior Lake, MN (US);
Siew Kin Chow, Shakopee, MN (US);
Assignee:
Seagate Technology LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 21/02 (2006.01); G11B 5/31 (2006.01); G11B 5/60 (2006.01); G11B 5/48 (2006.01); G11B 5/39 (2006.01); G11B 13/04 (2006.01); G11B 11/105 (2006.01); G11B 5/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/3123 (2013.01); G11B 5/3103 (2013.01); G11B 5/3106 (2013.01); G11B 5/3133 (2013.01); G11B 5/3967 (2013.01); G11B 5/4826 (2013.01); G11B 5/4866 (2013.01); G11B 5/607 (2013.01); G11B 5/6088 (2013.01); G11B 11/10504 (2013.01); G11B 13/04 (2013.01); G11B 2005/0021 (2013.01);
Abstract
Data is written to a recording medium via a read/write head. Subsequent to the writing, the data is read via a read transducer of a read/write head. An instability indicator is derived based on measurements performed while the reading the data. If the instability indicator exceeds a threshold, a current applied to a write coil of the read/write head is changed for subsequent write operations.