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. 01, 2015
Filed:
Mar. 13, 2013
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventors:
James Dillon Kiely, Edina, MN (US);
Karl Scheppers, Edina, MN (US);
Declan Macken, Prior Lake, MN (US);
Michael Thomas Johnson, Minneapolis, MN (US);
Assignee:
Seagate Technology LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/60 (2006.01); G11B 5/31 (2006.01); G11B 5/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/6076 (2013.01); G11B 5/314 (2013.01); G11B 5/3116 (2013.01); G11B 5/3133 (2013.01); G11B 5/3136 (2013.01); G11B 5/607 (2013.01); G11B 2005/0021 (2013.01);
Abstract
An apparatus is arranged to detect contact between an air bearing surface of a transducer and a medium using a modulated thermal sensor signal. A laser source produces modulated laser light. A thermal sensor is disposed at or near the air bearing surface and is subject to cyclic heating by the modulated laser light. The thermal sensor is configured to produce the modulated sensor signal in response to the cyclic heating.