Method, apparatus, and system for encoding and decoding visible light signal
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United States of America Patent
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May 30, 2017
Grant Date -
Jun 9, 2016
app pub date -
Jan 31, 2016
filing date -
Jul 31, 2013
priority date (Note) -
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Abstract
The present disclosure provides a method, an apparatus, and a system for encoding and decoding a visible light signal. The encoding method includes the following steps: dividing to-be-transmitted data into a plurality of data units, where each data unit includes one or more bits; converting the data units into a plurality of electrical signal units, where for each electrical signal unit, the number of level transitions is used to represent the one or more bits of a corresponding data unit, and an interval indicated by a predetermined level exists between adjacent electrical signal units, where a level in each electrical signal unit has a first level duration, and the predetermined level between adjacent electrical signal units has a second level duration; combining the electrical signal units to obtain an encoded electrical signal; and transmitting the encoded electrical signal in a visible light signal form.
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