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. 24, 2011
Filed:
Jun. 17, 2008
Applicant:
Timothy Francis Ellis, Tonka Bay, MN (US);
Inventor:
Timothy Francis Ellis, Tonka Bay, MN (US);
Assignee:
Seagate Technology LLC, Scotts Valley, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B 21/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is disclosed that includes measuring a first amplitude and a second amplitude in a servo pattern signal derived from a transducer head interacting with a medium; and providing an indication of a change in a spacing distance between the head and the medium, wherein the change in the spacing is evaluated using a spacing relation derived from a ratio of the first harmonic amplitude and the second harmonic amplitude.