Spatial Detection on an Electronic Device Using Optical Coding
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United States of America Patent
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Issued Date -
Dec 15, 2011
app pub date -
Jun 14, 2010
filing date -
Jun 14, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of detecting motion at an electronics device includes a detector at the device. Light reflects from an object located external to the device and is projected onto a mask. The mask includes a predetermined pattern of light-transmissive and opaque areas that will either allow, or block the reflected light from passing through the mask and forming a light pattern on the light-sensitive surface of a light sensor. The light sensor generates a waveform based on this light-pattern, and a processor processes the generated waveform to detect whether the object is in motion.
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