MULTIFUNCTIONAL DIGITAL ANTIGLARE DEVICE
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United States of America Patent
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Issued Date -
Jan 23, 2014
app pub date -
Apr 10, 2012
filing date -
Apr 14, 2011
priority date (Note) -
Abandoned
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Abstract
Disclosed herein is a multifunctional digital type anti-glare device which adds various functions such as a timer function, a stopwatch function, a world time display function, and a compass function. The multifunctional digital type anti-glare device includes an optical detection unit, an electromagnetic wave sensor unit, an electromagnetic wave detection unit, a control unit, a light transmission control unit for controlling variation in light transmissivity of an anti-glare plate depending upon an output signal of the control unit, a geomagnetic sensor for detecting an azimuth using the earth's magnetic field, and a compass display unit for displaying points of a compass depending upon the azimuth detected by the geomagnetic sensor.
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