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:
Apr. 23, 2013
Filed:
Sep. 02, 2011
Applicants:
Thomas A. O'dell, Sunnyvale, CA (US);
Balvinder Singh, Gilroy, CA (US);
Daryl M. Shiraki, San Jose, CA (US);
Inventors:
Thomas A. O'Dell, Sunnyvale, CA (US);
Balvinder Singh, Gilroy, CA (US);
Daryl M. Shiraki, San Jose, CA (US);
Assignee:
WD Media, LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 27/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus is disclosed comprising a thermal sensor operable to detect at least one protrusion defect and at least one recess defect on a disk, the thermal sensor operable to generate a sensor signal. An attack time of the sensor signal is measured when the thermal sensor passes over one of the protrusion defect and the recess defect, and the protrusion defect is discriminated from the recess defect based on the attack time.