Write head collision detection using MR read element in disc drives
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United States of America Patent
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Nov 23, 2004
Grant Date -
Jul 25, 2002
app pub date -
Jun 29, 2001
filing date -
Nov 10, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and associated method for detecting head collision with disc media, or other matter, during a write operation is disclosed. The method and apparatus generally monitor the resistance of an MR element on the head in order to detect a temperature increases indicative of a head collision. The resistance can be compared to a pre-selected threshold to generate an output indicative of head collision.
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