Power Line Communication System Using Hybrid-Fiber Coaxial and Communication Device Used in the System
First Claim
1. A power line communication (PLC) optical network unit of a hybrid fiber coaxial (HFC) communication system, the PLC optical network unit comprising:
- a first communication port unit connecting with a predetermined optical fiber, and receiving a predetermined optical Ethernet signal from a predetermined optical Ethernet device via the optical fiber;
a second communication port unit connecting with at least one coaxial cable;
a medium converter converting the received optical Ethernet signal into an Ethernet signal;
a PLC converter converting the Ethernet signal into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and
a transmission control unit controlling the PLC Ethernet signal to be transmitted to a subscriber location via the at least one coaxial cable that connects with the second communication port unit.
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Accused Products
Abstract
A communication equipment which is utilized in a power line communication (PLC) system utilizing a hybrid fiber coax (HFC) which includes a PLC optical network unit, a PLC trunk bridge amplifier, a PLC distribution amplifier, and a PLC coupling device. In this instance, the PLC optical network unit does not require a PLC protocol conversion of an Ethernet signal by a cable modem and a PLC modem in each subscriber location, and enables a PLC communication between the each subscriber location and a communication terminal utilizing a PLC Ethernet signal as is, by receiving an optical signal from an optical transmitter via an optical fiber, converting the optical signal into the PLC Ethernet signal corresponding to a predetermined PLC protocol, and transmitting the PLC Ethernet signal to at least one subscriber location via a coaxial cable.
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Citations
22 Claims
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1. A power line communication (PLC) optical network unit of a hybrid fiber coaxial (HFC) communication system, the PLC optical network unit comprising:
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a first communication port unit connecting with a predetermined optical fiber, and receiving a predetermined optical Ethernet signal from a predetermined optical Ethernet device via the optical fiber; a second communication port unit connecting with at least one coaxial cable; a medium converter converting the received optical Ethernet signal into an Ethernet signal; a PLC converter converting the Ethernet signal into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and a transmission control unit controlling the PLC Ethernet signal to be transmitted to a subscriber location via the at least one coaxial cable that connects with the second communication port unit. - View Dependent Claims (2, 3, 4, 5)
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6. A PLC trunk bridge amplifier of a hybrid fiber coaxial communication system, the PLC trunk bridge amplifier comprising:
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a first communication port unit connecting with a predetermined optical network unit or an optical Ethernet device via an optical fiber, and receiving a predetermined optical Ethernet signal from the optical network unit or the optical Ethernet device; a second communication port unit connecting with at least one coaxial cable; a medium converter converting the received optical Ethernet signal into an Ethernet signal; a PLC converter converting the Ethernet signal into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and a transmission control unit controlling the PLC Ethernet signal to be transmitted to a subscriber location via the at least one coaxial cable that connects with the second communication port unit. - View Dependent Claims (7, 8, 9)
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10. A trunk bridge amplifier of a hybrid fiber coaxial (HFC) communication system, the trunk bridge amplifier comprising:
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a first communication port unit connecting with a predetermined optical network unit via a coaxial cable and splitting a PLC Ethernet signal, which is transmitted from the optical network unit, into a high band PLC Ethernet signal and a low band PLC Ethernet signal; a second communication port unit connecting with a subscriber location via at least one coaxial cable and splitting a PLC Ethernet signal, which is transmitted from the subscriber location, into a high band PLC Ethernet signal and a low band PLC Ethernet signal; an amplification unit amplifying the high band PLC Ethernet signal, which is split via the first communication port unit, and transmitting the amplified high band PLC Ethernet signal to the subscriber location via the second communication port unit; and a low pass filter unit controlling the low band PLC Ethernet signal, which is split via the first communication port unit or the second communication port unit, to be transmitted to the optical network unit or to the subscriber location. - View Dependent Claims (11)
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12. A PLC distribution amplifier of a hybrid fiber coaxial communication system, the PLC distribution amplifier comprising:
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a first communication port unit connecting with a predetermined optical network unit, a trunk bridge amplifier, or an optical Ethernet device via an optical fiber, and receiving a predetermined optical Ethernet signal from the optical network unit, the trunk bridge amplifier, or the optical Ethernet device; a second communication port unit connecting with at least one coaxial cable; a medium converter converting the received optical Ethernet signal into an Ethernet signal; a PLC converter converting the Ethernet signal into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and a transmission control unit controlling the PLC Ethernet signal to be transmitted to a subscriber location via the at least one coaxial cable that connects with the second communication port unit. - View Dependent Claims (13, 14, 15)
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16. A distribution amplifier of a hybrid fiber coaxial communication system, the distribution amplifier comprising:
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a first communication port unit connecting with a predetermined optical network unit or a trunk bridge amplifier via a coaxial cable and splitting a PLC Ethernet signal, which is transmitted from the optical network unit or the trunk bridge amplifier, into a high band PLC Ethernet signal and a low band PLC Ethernet signal; a second communication port unit connecting with a subscriber location via at least one coaxial cable and splitting a PLC Ethernet signal, which is transmitted from the subscriber location, into a high band PLC Ethernet signal and a low band PLC Ethernet signal; an amplification unit amplifying the high band PLC Ethernet signal, which is split via the first communication port unit, and transmitting the amplified high band PLC Ethernet signal to the subscriber location via the second communication port unit; and a low pass filter unit controlling the low band PLC Ethernet signal, which is split via the first communication port unit or the second communication port unit, to be transmitted to the optical network unit or to the subscriber location. - View Dependent Claims (17)
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18. A PLC coupling device installed in a subscriber location of a hybrid fiber coaxial communication system, the PLC coupling device comprising:
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a coaxial cable port unit connecting with a predetermined coaxial cable and receiving a predetermined PLC Ethernet signal via the coaxial cable; a power line port unit connecting with at least one communication terminal, which is installed in the subscriber location, via a power line; and a coupling control unit transmitting the PLC Ethernet signal to the at least one communication terminal by coupling the PLC Ethernet signal with the power line. - View Dependent Claims (19)
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20. A PLC system using a hybrid fiber coaxial (HFC) comprising:
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an optical Ethernet device converting an Ethernet signal, which is received from a predetermined IP network, into an optical Ethernet signal; an optical transmitter converting a CATV signal, which is received from a predetermined CATV system, into a CATV optical signal; an optical network unit converting the CATV optical signal, which is received from the optical transmitter via an optical fiber, into a CATV signal and converting the optical Ethernet signal, which is received from the optical Ethernet device, into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and a PLC coupling device receiving the CATV signal or the PLC Ethernet signal from the optical network unit, and controlling the CATV signal to be transmitted to at least one display terminal which is installed in a subscriber location and controlling the PLC Ethernet signal to be transmitted to at least one communication terminal, which is installed in a subscriber location, via a power line.
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21. A PLC system using an HFC comprising:
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an optical Ethernet device converting an Ethernet signal, which is received from a predetermined IP network, into an optical Ethernet signal; a trunk bridge amplifier converting the optical Ethernet signal, which is received from the optical Ethernet device, a predetermined optical network unit or a predetermined optical network unit, into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and a PLC coupling device receiving the PLC Ethernet signal from the trunk bridge amplifier, and controlling the PLC Ethernet signal to be transmitted to at least one communication terminal, which is installed in the subscriber location, via a power line.
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22. A PLC system using an HFC comprising:
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an optical Ethernet device converting an Ethernet signal, which is received from a predetermined IP network, into an optical Ethernet signal; a distribution amplifier converting the optical Ethernet signal, which is received from the optical Ethernet device, a predetermined optical network unit, or a predetermined trunk bridge amplifier, into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and a PLC coupling device receiving the PLC Ethernet signal from the distribution amplifier, and controlling the PLC Ethernet signal to be transmitted to at least one communication terminal, which is installed in the subscriber location, via a power line.
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Specification