Spectral simulation method during noise testing for a magnetic head, and noise-testing method for a magnetic head by using the same
US8935132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2012 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Jan 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/048
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.