Broadcast signal retransmission system and method using illuminating visible-light communication
First Claim
1. A broadcast signal retransmission system using illuminating light communication, comprising:
- one or more visible-light-emitting diode (LED) lighting fixtures, each of which converts a broadcast channel signal received through a power line into a light signal and outputs the converted light signal as illumination light;
one or more smart communicators, each of which performs a request message transmit operation for a desired channel, and decodes the illumination light from a corresponding LED lighting fixture into a reply broadcast signal and outputs the reply broadcast signal; and
a home server for receiving a multi-channel broadcast signal, and for, upon reception of a channel signal request message containing a desired channel index and location reference from a particular smart communicator, setting a signal switching path on the basis of the location reference and transmitting a broadcast channel signal of the requested channel through a power line connected with the signal switching path to an LED lighting fixture installed at the site indicated by the location reference.
1 Assignment
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Accused Products
Abstract
Disclosed herein are a broadcast signal retransmission system and method using illuminating visible-light communication. The broadcast signal retransmission system comprises one or more light-emitting diode (LED) lighting fixtures, one or more smart communicators, and a home server. The home server receives and demodulates a multi-channel broadcast signal and, in reply to a signal request message from a smart communicator, transmits a demodulated broadcast channel signal through a power line to an LED lighting fixture indicated by the signal request message. The LED lighting fixture converts the broadcast channel signal into a light signal. The smart communicator receives the light signal from the LED lighting fixture and decodes the light signal into a broadcast signal. As a result, the user can selectively receive a broadcast signal of a desired channel using a smart communicator via a nearby LED lighting fixture.
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Citations
15 Claims
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1. A broadcast signal retransmission system using illuminating light communication, comprising:
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one or more visible-light-emitting diode (LED) lighting fixtures, each of which converts a broadcast channel signal received through a power line into a light signal and outputs the converted light signal as illumination light;
one or more smart communicators, each of which performs a request message transmit operation for a desired channel, and decodes the illumination light from a corresponding LED lighting fixture into a reply broadcast signal and outputs the reply broadcast signal; and
a home server for receiving a multi-channel broadcast signal, and for, upon reception of a channel signal request message containing a desired channel index and location reference from a particular smart communicator, setting a signal switching path on the basis of the location reference and transmitting a broadcast channel signal of the requested channel through a power line connected with the signal switching path to an LED lighting fixture installed at the site indicated by the location reference. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A broadcast signal retransmission method using illuminating visible-light communication, comprising the steps of:
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a) receiving a multi-channel broadcast signal, and demodulating the received multi-channel broadcast signal into broadcast channel signals by available channels;
b) receiving a channel signal request message containing a desired channel index and location reference from a smart communicator;
c) setting, according to the received channel signal request message, a signal switching path to route a selected one of the broadcast channel signals; and
d) superimposing the selected broadcast channel signal of the requested channel on a power wave carried on a power line connected to the signal switching path, and transmitting the broadcast channel signal through the power line to an LED lighting fixture installed at the site indicated by the location reference. - View Dependent Claims (9, 10, 11)
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12. A broadcast communication signal retransmission system, comprising:
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a server comprising;
means for receiving a multi-channel broadcast signal, and demodulating the received multi-channel broadcast signal into broadcast channel signals by available channels;
means for receiving a channel signal request message containing a desired channel index and location reference from a smart communicator;
means for setting, according to the received channel signal request message, a signal switching path to route a selected one of the broadcast channel signals;
means for superimposing the selected broadcast channel signal of the requested channel on a power wave carried on a power line connected to the signal switching path, and means for transmitting the broadcast channel signal through the power line to the site indicated by the location reference;
at least one visible-light-emitting diode (LED) lighting fixture for converting a broadcast channel signal received through a power line into a light signal and outputs the converted light signal as illumination light; and
at least one communicator for performing a request message transmit operation for a desired channel, and decodes the illumination light from a corresponding LED lighting fixture into a reply broadcast signal and outputs the reply broadcast signal. - View Dependent Claims (13, 14, 15)
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Specification