Light communication system and illumination apparatus therefor

Details Light communication system and illumination apparatus therefor Light communication system and illumination apparatus therefor

2005-08-26

2009-06-16

Leung, Christina Y (Department: 2613)

Optical communications

Transmitter and receiver system

Including visible light modulation

C398S127000, C398S130000

Reexamination Certificate

active

07548698

ABSTRACT:
An illumination apparatus is used in the light communication system. The apparatus receives electricity from a commercial alternating-current power source and a light-emitting element in the apparatus emits light. The zero passage time of commercial alternating-current power source is detected and signals are transmitted from illumination apparatus, or intercommunications between terminals of communication equipment take place, during a specific reserved time that is in synchronization with this zero passage time.

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