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:
Dec. 08, 2015
Filed:
Dec. 04, 2014
Applicant:
Western Digital Technologies, Inc., Irvine, CA (US);
Inventors:
Jianbin Nie, Fremont, CA (US);
Charles A. Park, Aromas, CA (US);
Brian P. Rigney, Louisville, CO (US);
Siri S. Weerasooriya, Campbell, CA (US);
Assignee:
Western Digital Technologies, Inc., Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/02 (2006.01); G11B 5/596 (2006.01);
U.S. Cl.
CPC ...
G11B 5/59666 (2013.01); G11B 5/59661 (2013.01);
Abstract
A data storage device is disclosed comprising a disk surface comprising a first spiral track at least partially overwritten by a second spiral track, and a head actuated over the disk surface based on the second spiral track. The first spiral track comprises a periodic pattern written at a first frequency, and the second spiral track comprises a periodic pattern written at a second frequency different from the first frequency.