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:
Mar. 01, 2005
Filed:
Mar. 26, 2003
Yong Y. Yang, Singapore, SG;
Qiang BI, Singapore, SG;
Xiong Liu, Singapore, SG;
Choonkiat Lim, Singapore, SG;
Yong Y. Yang, Singapore, SG;
Qiang Bi, Singapore, SG;
Xiong Liu, Singapore, SG;
ChoonKiat Lim, Singapore, SG;
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
Position error values are obtained from a transducer head while following a plurality of servo tracks with a servo loop that band-blocks a frequency range that includes F, a nominal rotation frequency. An estimated difference distribution is derived from the position error values, the difference distribution having a first frequency component at a positive frequency ≦2*F. A scalar track squeeze magnitude indicator is derived from the estimated difference distribution so that the indicator to be transmitted depends on the frequency component.