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. 26, 2020
Filed:
Feb. 10, 2019
Applicant:
Western Digital Technologies, Inc., San Jose, CA (US);
Inventors:
Shaomin Xiong, Fremont, CA (US);
Toshiki Hirano, San Jose, CA (US);
Na Wang, San Jose, CA (US);
William B. Boyle, Lake Forest, CA (US);
Assignee:
Western Digital Technologies, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 11/105 (2006.01); G11B 21/10 (2006.01); G11B 5/012 (2006.01); G11B 5/00 (2006.01); G11B 21/04 (2006.01);
U.S. Cl.
CPC ...
G11B 21/106 (2013.01); G11B 5/012 (2013.01); G11B 21/04 (2013.01); G11B 2005/0021 (2013.01); G11B 2005/0024 (2013.01);
Abstract
A data storage device is disclosed comprising a first head actuated over a first disk surface, wherein the first head comprises a write coil and a write-assist component. First data is written to the first disk surface using the write coil and the write-assist component of the first head. An electrical bias is applied to the write-assist component of the first head to physically damage the write-assist component, thereby rendering the first disk surface read-only.