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. 22, 2010
Filed:
Jan. 12, 2007
Jeff Nelson, Boulder, CO (US);
Farhad Navid, Boulder, CO (US);
Richard Martin, Longmont, CO (US);
Anton Viktorovich Goldade, Longmont, CO (US);
Jeff Nelson, Boulder, CO (US);
Farhad Navid, Boulder, CO (US);
Richard Martin, Longmont, CO (US);
Anton Viktorovich Goldade, Longmont, CO (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
The present disclosure is directed to spectral analysis of a position error signal. In a particular embodiment, the method includes analyzing a spectral content of a position error signal. The method also includes comparing the spectral content to a threshold. Further, the method includes determining a result based on the comparing the spectral content to the threshold. In another particular embodiment, the spectral content of the position error signal is determined by performing a discrete fourier transform (DFT) on the error signal, determining a magnitude of the DFT output, and low pass filtering the magnitude.