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. 18, 2014
Filed:
Oct. 19, 2011
Richard Leo Galbraith, Rochester, MN (US);
Weldon Mark Hanson, Rochester, MN (US);
Martin Aureliano Hassner, Mountain View, CA (US);
Travis Roger Oenning, Rochester, MN (US);
Satoshi Yamamoto, San Jose, CA (US);
Richard Leo Galbraith, Rochester, MN (US);
Weldon Mark Hanson, Rochester, MN (US);
Martin Aureliano Hassner, Mountain View, CA (US);
Travis Roger Oenning, Rochester, MN (US);
Satoshi Yamamoto, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A method, apparatus, and system are provided for implementing magnetic defect classification using phase modulation for hard disk drives. A magnetic media readback signal of a hard disk drive is processed to identify predefined phase modulation (PM) characteristics to implement magnetic defect classification of magnetic media bump and pit defects.