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Nonlinearity measuring method, nonlinearity measuring unit, magnetic recording/regenerating unit and LSI for magnetic recording/regenerating
Nonlinearity measuring method, nonlinearity measuring unit, magnetic recording/regenerating unit and LSI for magnetic recording/regenerating
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机译:非线性测量方法,非线性测量单元,磁记录/再生单元和用于磁记录/再生的LSI
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摘要
A nonlinearity measuring method capable of measuring NLTS with a higher precision while taking the state of magnetization inversion of a preceding bit string into consideration. A constitution includes a first measuring section measuring a first predetermined higher harmonic component from a regenerated signal of the reference signal magnetically recorded on a medium, a second measuring section measuring a second predetermined higher harmonic component from regenerated signals with respect to plural kinds of signals to be measured magnetically recorded on the medium, and a calculating section calculating NLTS from the first component and the second component corresponding to each of the signals, wherein each of plural kinds of signals to be measured includes a magnetization inversion pattern string P1 preceding the objective bit to be measured of NLTS; thereby NLTS depending on the string P1 can be quantitatively measured easily.
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