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:
Nov. 07, 2006
Filed:
Jan. 21, 2004
Taivie Chiang, Singapore, SG;
Wingkong Chiang, Singapore, SG;
Kiankeong Ooi, Singapore, SG;
Kiansoon Yeo, Singapore, SG;
Mingzhong Ding, Singapore, SG;
TaiVie Chiang, Singapore, SG;
WingKong Chiang, Singapore, SG;
KianKeong Ooi, Singapore, SG;
KianSoon Yeo, Singapore, SG;
MingZhong Ding, Singapore, SG;
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A method of determining and monitoring head polarity of data heads comprises performing a head polarity detection routine. The head polarity detection routine comprises the step of setting a read gate period duration to a first value. The routine also comprises searching for a good address mark signal during a first read gate period with a channel polarity set to a first polarity. The routine further comprises identifying a polarity of a data head based upon the channel polarity when the good address mark is detected.