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. 25, 2011
Filed:
Nov. 12, 2010
Makoto Horisaki, Fujisawa, JP;
Kiyotada Ito, Hiratsuka, JP;
Makoto Horisaki, Fujisawa, JP;
Kiyotada Ito, Hiratsuka, JP;
Marvell International Ltd., Hamilton, BM;
Abstract
A system including a self-servo-write, a position measuring module, and a compensation module. The self-servo-write module is configured to position a head of a hard disk drive to write a first set of servo wedges on a magnetic medium of the hard disk drive. The position measuring module is configured to measure a first position of the head when the head writes the first set of servo wedges on the magnetic medium. The compensation module is configured to generate first data to compensate a repeatable error based on the first position of the head measured by the position measuring module. The first data to compensate the repeatable error is written on the magnetic medium along with the first set of servo wedges.