Method and apparatus for signal reception with ambient light compensation
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United States of America Patent
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Oct 6, 2015
Grant Date -
Apr 17, 2014
app pub date -
Oct 15, 2012
filing date -
Oct 15, 2012
priority date (Note) -
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Abstract
A free space communications apparatus includes a first receiving element configured to receive a communication signal and an ambient noise signal and to generate a first current as a function of any and all received signals, a second receiving element electrically coupled with the first receiving element to receive the ambient noise signal and to generate a second current as a function of any and all received signals, and an output signal produced as a function of the communication signal received by the first receiving element. The first and second receiving elements are electrically connected in a circuit that cancels at least a portion of the first current as a function of the second current to produce the output signal.
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