Devices and methods of detecting movement between media and probe tip in a probe data storage system
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United States of America Patent
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Jun 24, 2008
Grant Date -
Jul 19, 2007
app pub date -
Feb 2, 2007
filing date -
Dec 18, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A memory apparatus comprises a media, a tip adapted to write information to and read information from said media, a media movement mechanism attached to said media and configured to move said media in response to media control signals, and a capacitive sensor configured to detect an amount of relative movement of said media and said tip in at least an x-axis direction. The capacitive sensor includes a fixed comb having fingers protruding in an x-axis direction, a moving comb connected having fingers protruding in an x-axis direction, and an electrical path connected to said fixed comb and an electrical path connected to said moving comb. The relative movement in at least the x-axis direction is determined at least in part on a change in capacitance between said fixed and moving combs of said capacitive sensor.
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