Optical data reader with control mechanism implemented behind the window
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United States of America Patent
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Jul 12, 2005
Grant Date -
N/A
app pub date -
Apr 25, 2000
filing date -
Apr 25, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an optical data reader, light is aimed out through a window at objects located in front of the window, and reflections from the objects and/or the window itself are detected. The amount of detected light is compared to one or more expected levels to determine when an object is present in front of the window and/or whether the window is properly installed. The optical reader is controlled based on this determination. Control functions that may be implemented in this manner include, for example, waking up the data reader when an object is detected in front of the glass, and disabling the data reader if the window is removed.
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