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.

Date of Patent:
Jul. 08, 2014

Filed:

Aug. 05, 2011
Applicants:

Toshiki Hirano, San Jose, CA (US);

Xiaotian Sun, Saratoga, CA (US);

Inventors:

Toshiki Hirano, San Jose, CA (US);

Xiaotian Sun, Saratoga, CA (US);

Assignee:

HGST Netherlands B.V., Amsterdam, NL;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/09 (2006.01);
U.S. Cl.
CPC ...
Abstract

A system and method of establishing write timing in a disk drive using bit patterned media and a magnetic head with read-write offset in which servoing and writing occur on different tracks with timing offsets. Initially, the distance between the servoing and writing tracks is determined for each track/head position in accordance with head geometry and skew angle. The relative timing errors are then measured by iteratively writing data at timing offset increments to determine the optimal timing offset for the servoing/writing track pair, and then writing the offset to sync fields on the servoing tracks of the disk.


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