USING AMBIENT LED LIGHT FOR BROADCASTING INFO AND NAVIGATION
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United States of America Patent
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Issued Date -
Dec 23, 2010
app pub date -
Jun 18, 2009
filing date -
Jun 18, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A mobile device for receiving modulated light, an apparatus for transmitting information by modulated light and a system as well as corresponding methods are disclosed to be able to use at least parts of an illumination infrastructure for transmitting data to a mobile device. The mobile device comprises a visible light receiver for receiving modulated visible light carrying information corresponding to transmission data modulated onto visible light emitted from at least one light source and for outputting a signal based on the received modulated visible light, and a demodulator for demodulating said signal based on the received modulated visible light to extract said information corresponding to said transmission data.
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