| 摘要 |
PROBLEM TO BE SOLVED: To provide a new head floating height measuring instrument which does not need a dedicated magnetized pattern. SOLUTION: The head floating height measuring instrument in a disk drive including a reading head includes: a signal reproducing means 300 for reproducing a signal from the reading head; a filter means (320, 322) connected to the signal reproducing means 300 and filtering a reproduced signal; amplitude detecting means 330, 332 connected respectively to the filter means and detecting maximum amplitude or a representative value near the maximum amplitude from the reproduced signal; and a calculating means 340 using the maximum amplitude or the representative value near the maximum amplitude detected by the amplitude detecting means to calculate the floating height of the reading head in the disk drive. COPYRIGHT: (C)2007,JPO&INPIT
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