MAGNETIC RECORDING DEVICE, HEAD EVALUATION DEVICE, AND WRITE-POLE-ERASING EVALUATION METHOD
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United States of America Patent
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Issued Date -
Dec 2, 2010
app pub date -
May 26, 2010
filing date -
May 26, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
According to one embodiment, a magnetic recording device includes a write controller to control such that writing first information having a same polarity throughout the first information in a predetermined region including a plurality of tracks in a recording medium, writing second information in a target track located within or close to the predetermined region, and writing third information having, at an end of the writing, a polarity opposite to the polarity of the first information in a region of the target track in which the second information is not written, are performed; a read controller to control such that the second information is read after each of writing of the second information and writing of the third information; and a determiner to determine occurrence of pole erasing based on each second information read under the control by the read controller.
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