Magnetic media having partitioned and presaturated data tracks
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United States of America Patent
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Jun 19, 2001
Grant Date -
N/A
app pub date -
Apr 27, 1999
filing date -
May 1, 1996
priority date (Note) -
Expired
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Abstract
The present invention provides an apparatus and method of partitioning a recording medium data track into two longitudinal regions and erasing any preexisting signal on each region with a DC bias signal of polarity opposite to that of the other region. Magnetic transitions subsequently recorded over the two track regions will be shifted differently depending on the relationship of the polarity of the signal being encoded to that of the DC bias erase signal applied to each region. The complementary lead/lag errors from the two track regions produce a combined read head waveform in which the timing errors are substantially eliminated, thereby reducing system bit error rates and allowing increased data density on the medium. An apparatus and method of controlling the lateral position of the various heads are also disclosed.
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