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:
Oct. 18, 2005
Filed:
Sep. 02, 2003
Applicants:
Reed David Hanson, Chaska, MN (US);
Nathaniel Boyd Wilson, Edmond, OK (US);
John Christopher Morris, Eden Prairie, MN (US);
Thomas Christopher Zirps, Minneapolis, MN (US);
Inventors:
Reed David Hanson, Chaska, MN (US);
Nathaniel Boyd Wilson, Edmond, OK (US);
John Christopher Morris, Eden Prairie, MN (US);
Thomas Christopher Zirps, Minneapolis, MN (US);
Assignee:
Seagate Technology LLC, Scotts Valley, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B005/596 ;
U.S. Cl.
CPC ...
Abstract
An apparatus and method of tracking repeatable runout in a disc drive servo loop is provided in which a feedforward signal having harmonic components that are updated at a sample rate that is a fraction of a servo sector sample rate is employed during track following.