FTTH system for convergence of broadcasting and communication through switched broadcasting

A fiber to the home (FTTH) system for convergence of digital broadcast and communication signals through a switched broadcast, comprising:

• an optical line terminal (OLT) for receiving a first predetermined number of broadcast signals and an Ethernet signal, converting the received broadcast signals and Ethernet signal into a plurality of converted optical signals, combining the converted optical signals into converged optical signals, and transmitting the converged optical signals by an optical wavelength division multiplexing method;
• an optical network unit (ONU) for receiving and classifying the converged optical signals transmitted from the OLT back into the first predetermined number of broadcast signals and the Ethernet signal, converting the classified signals into electrical signals, and said ONU switching a second predetermined number of broadcast signals from the first predetermined number of broadcast signals according to each subscriber interface unit (SIU) by a channel selection information contained in upstream Ethernet information, switching the Ethernet signal to be transmitted according to each SIU and transmitting the switched second predetermined number of the switched broadcast signals and the switched Ethernet signals in optical;
• and
• an SIU for converting the second predetermined number of broadcast signals transmitted from the ONU into electrical signals, transmitting the second predetermined number of broadcast signals and the Ethernet signal to be transmitted to a subscriber to a corresponding subscriber' terminal, and transmitting the upstream Ethernet information including the upstream Ethernet information for the broadcasting signal to the ONU, wherein the ONU comprises:
• a multiple program transport stream (MPTS) switch for switching the second predetermined number of broadcast signals of the first predetermined number of broadcasting signals according to each SIU by the channel selection information contained in the upstream Ethernet information transmitted from the SIUs;
• a plurality of time division multiplexers for time division multiplexing the second predetermined number of SIU-based broadcast signals so as to transmit the multiplexed signal to a corresponding SIU;
• a first Ethernet switch for switching the Ethernet signal from the OLT from the switched signals to the SIU, and for transmitting the channel selection information contained in upstream Ethernet information from the SIU to the MPTS switch;
• and
• a first transceiver for transmitting the time division multiplexed broadcast signal and the Ethernet signal from the OLT switched by the first Ethernet switch to each SIU, and receiving the upstream Ethernet information from the SIUs to transmit the received information to the first Ethernet switch.

A fiber to the home (FTTH) system for convergence of digital broadcast and communication signals through a switched broadcast, comprising:

• an optical line terminal (OLT) for receiving a first predetermined number of broadcast signals and an Ethernet signal, converting the received broadcast signals and Ethernet signal into a plurality of converted optical signals, combining the converted optical signals into converged optical signals, and transmitting the converged optical signals by an optical wavelength division multiplexing method:
• an optical network unit (ONU) for receiving and classifying the converged optical signals transmitted from the OLT back into the first predetermined number of broadcast signals and the Ethernet signal, converting the classified signals into electrical signals, and said ONU switching a second predetermined number of broadcast signals from the first predetermined number of broadcast signals according to each subscriber interface unit (SIU) by a channel selection information contained in upstream Ethernet information, switching the Ethernet signal to be transmitted according to each SIU and transmitting the switched second predetermined number of the switched broadcast signals and the switched Ethernet signals in optical;
• and
• an SIU for converting the second predetermined number of broadcast signals transmitted from the ONU into electrical signals, transmitting the second predetermined number of broadcast signals and the Ethernet signal to be transmitted to a subscriber to a corresponding subscriber' terminal, and transmitting the upstream Ethernet information including the upstream Ethernet information for the broadcasting signal to the ONU, wherein the ONU comprises:
• an MPTS switch for switching the second predetermined number of broadcasting signals of the first predetermined number of broadcasting signals according to each SIU by channel selection information, contained in the upstream Ethernet information transmitted from the SIUs;
• a first Ethernet switch for switching the Ethernet signal from the OLT so as to transmit the switched signal to the SIU, and transmitting the channel selection information contained in the upstream Ethernet information from the SIU to the MPTS switch;
• a plurality of time division multiplexers for time division multiplexing the second predetermined number of SIU-based broadcasting signals switched by the MPTS switch and the Ethernet signal from the OLT transmitted through the first Ethernet switch to transmit the broadcast signals and the Ethernet signal to a corresponding subscriber;
• and
• a first transceiver for transmitting the time division multiplexed broadcasting signal and the Ethernet signal to each SIU, and receiving the upstream Ethernet information from the SIUs to transmit the received information to the first Ethernet switch.

A method providing convergence of digital broadcast and communication signals through a switched broadcast in a fiber to the home (FTTH) system, said method comprising the steps of:

• (a) receiving a first predetermined number of broadcast signals and an Ethernet signal by an optical line terminal (OLT) for, converting the received broadcast signals and Ethernet signal into a plurality of converted optical signals, combining the converted optical signals into converged optical signals, and transmitting the converged optical signals by an optical wavelength division multiplexing method;
• (b) receiving and classifying the converged optical signals transmitted from the OLT by an optical network unit (ONU) for the first predetermined number of broadcast signals and the Ethernet signal by converting the classified signals into electrical signals, and said ONU switching a second predetermined number of broadcast signals from the first predetermined number of broadcast signals according to each subscriber interface unit (SIU) by a channel selection information contained in upstream Ethernet information, and switching the Ethernet signal to be transmitted according to each SIU so as to transmit the switched signals;
• and
• (c) converting the second predetermined number of broadcast signals transmitted from die ONU into electrical signals by the SIU, transmitting the second predetermined number of broadcast signals and the Ethernet signal to be transmitted to a subscriber to a corresponding subscriber's terminal, and transmitting the upstream Ethernet information including the upstream Ethernet information for the broadcasting signal to the ONU, wherein only the second predetermined number of broadcast signals selected through using the channel selection information is transmitted to the SIU from the ONU.

A method providing convergence of digital broadcast and communication signals through a switched broadcast in a fiber to the home (FTTH) system, said method comprising the steps of:

• (a) receiving a first predetermined number of broadcast signals and an Ethernet signal by an optical line terminal (OLT) for, converting the received broadcast signals and Ethernet signal into a plurality of converted optical signals, combining the converted optical signals into converged optical signals, and transmitting the converged optical signals by an optical wavelength division multiplexing method;
• (b) receiving and classifying the converged optical signals transmitted from the OLT by an optical network unit (ONU) for the first predetermined number of broadcast signals and the Ethernet signal by converting the classified signals into electrical signals, and said ONU switching a second predetermined number of broadcast signals from the first predetermined number of broadcast signals according to each subscriber interface unit (SIU) by a channel selection information contained in upstream Ethernet information, and switching the Ethernet signal to be transmitted according to each SIU so as to transmit the switched signals;
• and
• (C) converting the second predetermined number of broadcast signals transmitted from the ONU into electrical signals by the SIU, transmitting the second predetermined number of broadcast signals and the Ethernet signal to be transmitted to a subscriber to a corresponding subscriber's terminal, and transmitting the upstream Ethernet information including the upstream Ethernet information for the broadcasting signal to the ONU, wherein the ONU comprises:
• a multiple program transport stream (MPTS) switch for switching the second predetermined number of broadcast signals of the first predetermined number of broadcasting signals according to each SIU by the channel selection information contained in the upstream Ethernet information transmitted from the SIUs;
• a plurality of time division multiplexers for time division multiplexing the second predetermined number of SIU-based broadcast signals so as to transmit the multiplexed signal to a corresponding SIU;
• a first Ethernet switch for switching the Ethernet signal from the OLT from the switched signals to the SIU, and for transmitting the channel selection information contained in upstream Ethernet information from the SIU to the MPTS switch;
• and
• a first transceiver for transmitting the time division multiplexed broadcast signal and the Ethernet signal from the OLT switched by the first Ethernet switch to each SIU, and receiving the upstream Ethernet information from the SIUs to transmit the received information to the first Ethernet switch.

The method according to 11, wherein the first transceiver comprises a triplex transceiver including:

• a first optical transmitter for converting each of the time division multiplexed broadcasting signals into an optical signal to provide a plurality of converted optical signals that are transmitted;
• a second optical transmitter for converting the Ethernet signal from the OLT into an optical signal so as to transmit the converted signal along with the plurality of converted optical signals as converged optical signals;
• and
• a first optical receiver for receiving the upstream Ethernet information from at least one SIU so as to transmit the received information to the first Ethernet switch.

A method providing convergence of digital broadcast and communication signals through a switched broadcast in a fiber to the home (FTTH) system, said method comprising the steps of:

• (a) receiving a first predetermined number of broadcast signals and an Ethernet signal by an optical line terminal (OLT) for, converting the received broadcast signals and Ethernet signal into a plurality of converted optical signals, combining the converted optical signals into converged optical signals, and transmitting the converted optical signals by an optical wavelength division multiplexing method:
• (b) receiving and classifying the converged optical signals transmitted from the OLT by an optical network unit (ONU) for the first predetermined number of broadcast signals and the Ethernet signal by converting the classified signals into electrical signals, and said ONU switching a second predetermined number of broadcast signals from the first predetermined number of broadcast signals according to each subscriber interface unit (SIU) by a channel selection information contained in upstream Ethernet information, and switching the Ethernet signal to be transmitted according to each SIU so as to transmit the switched signals;
• and
• (c) converting the second predetermined number of broadcast signals transmitted from the ONU into electrical signals by the SIU, transmitting the second predetermined number of broadcast signals and the Ethernet signal to be transmitted to a subscriber to a corresponding subscriber's terminal, and transmitting the upstream Ethernet information including the upstream Ethernet information for the broadcasting signal to the ONU, wherein the ONU comprises:
• an MPTS switch for switching the second predetermined number of broadcasting signals of the first predetermined number of broadcasting signals according to each SIU by channel selection information contained in the upstream Ethernet information transmitted from the SIUs;
• a first Ethernet switch for switching the Ethernet signal from the OLT so as to transmit the switched signal to the SIU, and transmitting the channel selection information contained in the upstream Ethernet information from the SIU to the MPTS switch;
• a plurality of time division multiplexers for time division multiplexing the second predetermined number of SIU-based broadcasting signals switched by the MPTS switch and the Ethernet signal from the OLT transmitted through the first Ethernet switch to transmit the broadcast signals and the Ethernet signal to a corresponding subscriber;
• and
• a first transceiver for transmitting the time division multiplexed broadcasting signal and the Ethernet signal to each SIU, and receiving the upstream Ethernet information from the SIUs to transmit the received information to the first Ethernet switch.