Systems and methods for determining ambient illumination having a bypass switch
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United States of America Patent
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Aug 8, 2017
Grant Date -
May 5, 2016
app pub date -
Oct 27, 2015
filing date -
Oct 31, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Systems and methods are provided for measuring an ambient light level in a volume that is lighted by a pulsating light source. A first light sensor is configured to generate a first signal based on an amount of light detected in the volume. A bypass switch is configured to bypass the first light sensor at a first point in time when the light source is on and to not bypass the first light sensor at a second point in time when the light source is off. A second sensor is configured to generate a second signal based on an environment in the volume, and a difference circuit is configured to determine a difference magnitude between the second signal and the first signal to generate an ambient light signal.
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