Bimodal biasing of magneto resistive heads
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United States of America Patent
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Apr 29, 2003
Grant Date -
Mar 14, 2002
app pub date -
Aug 30, 2001
filing date -
Nov 4, 1998
priority date (Note) -
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Abstract
A system and method for selecting between two biasing modes for biasing magneto resistive heads in a disk drive. A mode selector selects either a voltage biasing circuit or a current biasing to supply the bias voltage or bias current, respectively, to a magneto resistive head. The selection can be based on changes in parameters in the disk drive or magneto resistive heads during disk drive operation.
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