Optical navigation sensor with variable tracking resolution
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United States of America Patent
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Jun 1, 2010
Grant Date -
Jan 10, 2008
app pub date -
Jul 10, 2006
filing date -
Jul 10, 2006
priority date (Note) -
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Abstract
One embodiment relates to a method of sensing motion of an optical sensor relative to a surface. A first resolution and a second resolution are set. Measurement signals are obtained from a sensor array, and the motion of the optical sensor relative to the surface is tracked using the measurement signals. The tracking of the motion in a first dimension is performed at the first resolution, and the tracking of the motion in a second dimension is performed at the second resolution. Another embodiment relates to an optical sensor apparatus for sensing motion relative to a surface, wherein the tracking of the motion is performed at a variable resolution along each of two axes. Other embodiments and features are also disclosed.
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