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:
Feb. 10, 2015
Filed:
Jun. 17, 2013
Seagate Technology Llc, Cupertino, CA (US);
Andy Chou, Singapore, SG;
Quan Li, Singapore, SG;
Chee Wee Cheng, Singapore, SG;
Beng Theam Ko, Singapore, SG;
Myint Ngwe, Singapore, SG;
Seagate Technology LLC, Cupertino, CA (US);
Abstract
A method for detecting a contact event between a transducer and a recording medium is disclosed. The method includes positioning a transducer with respect to a recording medium, where the transducer includes a writer, a reader, a heater, and a thermally responsive sensor. The method further includes applying power to the heater to establish a fly height of the transducer; supplying a bias current through the thermally responsive sensor to generate a bias signal; measuring a root mean square (RMS) voltage Vof the thermally responsive sensor based on the bias signal; determining a threshold voltage V; and detecting a contact event between the transducer and the medium based on Vbeing greater than V.