Methods of sampling a surface having a micro-texture
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United States of America Patent
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-
Mar 30, 2004
Grant Date -
Dec 12, 2002
app pub date -
Aug 9, 2002
filing date -
Oct 28, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods of sampling a surface having a micro-texture upon which an optical navigation circuit tracks movement. An embodiment of the method comprises determining a rate for taking samples of the surface, determining an exposure level of the surface, illuminating the surface at the determined rate for taking samples, and illuminating the surface for each of the samples with pulses of light at the determined exposure level.
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