Communication with non-flickering illumination

Details Communication with non-flickering illumination Communication with non-flickering illumination

2006-03-21

2006-03-21

Vo, Tuyet Thi (Department: 2821)

Optical: systems and elements

Light interference

Produced by coating or lamina

C359S298000, C359S307000, C340S289000

Reexamination Certificate

active

07016115

ABSTRACT:
A system for and method of generating electromagnetic radiation in which the radiation has both a first and second utility. The electromagnetic radiation is modulated to produce electronically detectable variations to achieve the second utility, the variations not affecting the first utility. In one embodiment, the electromagnetic radiation is visible light. In this embodiment, the first utility is illumination and the second utility is the transmission of data. In another embodiment, the invention provides a lamp for generating visible light capable of providing illumination and transmitting data to a receiver. Any variations in the visible light resulting from the data transmission are imperceptible by a human eye regardless of the nature of the data being transmitted. In yet another embodiment, a power line carrier modem or wireless network may be used with the present invention to transmit information to the source.

REFERENCES:
patent: 6577080 (2003-06-01), Lys et al.
patent: 6897624 (2005-05-01), Lys et al.

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