Tracking motion using an interference pattern
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United States of America Patent
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Jun 15, 2010
Grant Date -
Apr 21, 2005
app pub date -
Oct 16, 2003
filing date -
Oct 16, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system, method, and device for tracking motion across a surface by creating an interference pattern by reflecting light from the surface. There is produced, as a result of sensor moving across the surface, at least one signal pattern corresponding to a detection of a dimension of the interference pattern. This detected dimension is associated with an assumed dimensional value to determine a distance traveled by the sensor.
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