Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 27, 2007
0Patent Application Number
110943830
Date Filed
March 31, 2005
0Patent Primary Examiner
Patent abstract
A method of monitoring a position of a movable member having a surface is provided. The method includes sensing an image of a portion of the surface of the movable member and identifying a stored image in a memory corresponding to the sensed image. The method further includes identifying a location of the movable member corresponding to the stored image. The stored image is replaced with the sensed image in the memory.
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