Apparatus and method for adaptively adjusting recording density of a disk utilizing a trapezoidal shaped magnetic head
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United States of America Patent
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Aug 19, 2008
Grant Date -
Jun 7, 2007
app pub date -
Dec 1, 2006
filing date -
Dec 3, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method is provided for storing and retrieving information from a disk in which a TPI (tracks per inch) profile of a disk drive including a write pole having a trapezoidal cross-section is adaptively varied. The method includes comparing the slope angle of sides of a write pole associated with a magnetic head to a skew angle associated with a disk area; and dividing the disk areas into a first area in which the slope angle is greater than the skew angle and a second area in which the slope angle is not greater than the skew angle. Based on this comparison result, different track pitches for the first area and the second area are determined.
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