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.:

US 7872829 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 18, 2011

Filed:

Oct. 02, 2008
Applicant:

Yuji Sakai, Ome, JP;

Inventor:

Yuji Sakai, Ome, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/596 (2006.01);
U.S. Cl.
CPC ...
Abstract

According to one embodiment, there is provided a disk drive that can perform dynamic offset control (DOC). The disk drive has a magnetic head, a disk, and offset calculating modules. The magnetic head has read head. Offset-measuring position data is written in a non-servo area provided in the disk. The read head reads the offset-measuring position data from the disk. Based on the offset-measuring position data thus read, the offset calculating modules calculate an offset value that changes during a one-rotation period of the disk.


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Sakai, Yuji. (2011). Method and apparatus for offset control in a disk drive (U.S. Patent No. 7872829). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7872829

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