DISPLAY LED UNIT AND METHOD FOR CONTROLLING DISPLAY LEDS
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United States of America Patent
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Issued Date -
Nov 1, 2012
app pub date -
Dec 8, 2010
filing date -
Dec 8, 2009
priority date (Note) -
Abandoned
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Abstract
There is provided a display LED unit including at least one light emitting diode having a first and a second operating mode. The LED is operated in the forward mode in a first operating mode and a light signal is emitted in dependence on the forward voltage applied to the LED. The LED is operated in the reverse mode with a reverse voltage in a second operating mode and a voltage signal is output in dependence on the ambient light. The display LED unit further comprises a control unit for controlling the light emission of the LED in the first operating mode in dependence on the ambient light detected by the LED in the second operating mode.
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