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:
Jul. 14, 2015
Filed:
Jul. 23, 2012
Michael Thomas Johnson, Minneapolis, MN (US);
Manuel Charles Anaya Dufresne, Edina, MN (US);
Xuan Zheng, Savage, MN (US);
Dongming Liu, Eden Prairie, MN (US);
Michael Thomas Johnson, Minneapolis, MN (US);
Manuel Charles Anaya Dufresne, Edina, MN (US);
Xuan Zheng, Savage, MN (US);
Dongming Liu, Eden Prairie, MN (US);
SEAGATE TECHNOLOGY LLC, Cupertino, CA (US);
Abstract
A bias signal is applied to a resistive thermal sensor located proximate a magnetic media reading surface of a magnetic sensor. The bias signal is modulated between first and second bias levels. First and second resistances of the resistive thermal sensor corresponding to the first and second bias levels are measured. Based a difference between the first and second resistances caused by in increase in thermal conductivity between the magnetic sensor and a medium as the magnetic head gets closer to the medium, at least one of a spacing and a contact between the magnetic sensor and the medium are determined.