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:
Jun. 17, 2008
Filed:
Sep. 22, 2006
Teddy T. C. Chen, Huntington Beach, CA (US);
Jinsheng Bill Jang, Irvine, CA (US);
Jie Yu, Irvine, CA (US);
Masao Miyamura, Diamond Bar, CA (US);
Teddy T. C. Chen, Huntington Beach, CA (US);
Jinsheng Bill Jang, Irvine, CA (US);
Jie Yu, Irvine, CA (US);
Masao Miyamura, Diamond Bar, CA (US);
Western Digital Technologies, Inc., Lake Forest, CA (US);
Abstract
A perpendicular media recording (PMR) servo track writer (STW) system and method for writing servo sectors onto a disk is disclosed. The servo writer includes a head positioner to position a head of a head disk assembly (HDA) relative to a disk, wherein the head writes servo sectors onto the disk with a perpendicular flux. The servo writer includes a controller to control the head positioner such that the head writes servo sectors onto the disk from one of an inner diameter (ID) or an outer diameter (OD) of the disk to a middle diameter (MD) of the disk, respectively, followed by writing servo sectors between the other of the OD or the ID of the disk to the MD of the disk, respectively.