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:
Jan. 13, 2015
Filed:
Feb. 08, 2012
Hokei Lam, Hong Kong, CN;
Cheukman Lui, Hong Kong, CN;
Chiuming Lueng, Hong Kong, CN;
Kaichiu Cheung, Hong Kong, CN;
Wahchun Chan, Hong Kong, CN;
Juren Ding, Hong Kong, CN;
Rongkwang NI, Hong Kong, CN;
Hokei Lam, Hong Kong, CN;
Cheukman Lui, Hong Kong, CN;
Chiuming Lueng, Hong Kong, CN;
Kaichiu Cheung, Hong Kong, CN;
Wahchun Chan, Hong Kong, CN;
Juren Ding, Hong Kong, CN;
Rongkwang Ni, Hong Kong, CN;
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
Abstract
A spectral simulation method during a noise testing for a magnetic head, includes steps of (a1) detecting several first noise profiles for several magnetic head samples under a first frequency bandwidth range by a dynamic testing machine; (b1) separating each first noise profile into at least two noise curves including a first noise curve and a second noise curve at a predetermined frequency bandwidth, wherein the first noise curve has a frequency bandwidth range lower than that of the second noise curve; (c1) fitting several mathematical equations according to the second noise curves; and (d1) establishing a correlative equation among the mathematical equations, so as to simulate the second noise curve for each magnetic head. The present invention can simulate a second noise curve of the noise profile in a higher frequency bandwidth and establishing the correlative equation according to the second noise curve.