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:
Mar. 15, 2005
Filed:
Jun. 26, 2002
Brent Jay Harmer, Johnstown, CO (US);
Jianbo J. He, Longmont, CO (US);
Khalil B. Dizaji, Louisville, CO (US);
Hai Thanh Ho, Broomfield, CO (US);
Reed David Hanson, Chaska, MN (US);
Brent Jay Harmer, Johnstown, CO (US);
Jianbo J. He, Longmont, CO (US);
Khalil B. Dizaji, Louisville, CO (US);
Hai Thanh Ho, Broomfield, CO (US);
Reed David Hanson, Chaska, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
Method and apparatus for more accurate track following. Control circuitry rotates a data storage surface containing thousands of annular tracks. A 'measured' subset of the tracks is selected so as to be interspersed with an 'unmeasured' subset. The calibration profile is derived based on position error signals each obtained by reading from the measured subset and not from the unmeasured subset. Data from the unmeasured subset of tracks is ignored, in generating and/or updating the profile.