Two-dimensional motion sensor
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United States of America Patent
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Dec 2, 2008
Grant Date -
Mar 15, 2007
app pub date -
Oct 18, 2006
filing date -
Oct 29, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An optical sensor and method of using the same is provided for sensing relative movement between the sensor and a surface by detecting changes in optical features of light reflected from the surface. In one embodiment, the sensor includes a two dimensional array of photosensitive elements, the array including at least a first plurality of photosensitive elements arranged and coupled to sense a first combined movement along a first set of at least two non-parallel axes, and a second plurality of photosensitive elements arranged and coupled to sense a second combined movement along a second set of a least two non-parallel axes.
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