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. 11, 2012
Filed:
Jun. 08, 2010
Sungchang Lee, San Jose, CA (US);
Brian Thornton, Mountain View, CA (US);
Mike Suk, Palo Alto, CA (US);
Seungmo Kang, Palo Alto, CA (US);
SungChang Lee, San Jose, CA (US);
Brian Thornton, Mountain View, CA (US);
Mike Suk, Palo Alto, CA (US);
SeungMo Kang, Palo Alto, CA (US);
Seagate Technology International, Grand Cayman, KY;
Abstract
This application discloses a hard disk drive and a control circuit that are configured to determine touchdown by determining the SAGC for a track, removing the repeatable component of the SAGC to create the non-repeatable component and determining an indication of clearance irregularity and/or touch down when the standard deviation of the non-repeatable component spikes. These operations may create a defect map and/or a Flying height On Demand (FOD) control table in or for the hard disk drive as products of operating the hard disk drive.