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| Number | Title | Issue Date |
| 8184977 | Optical line terminal capable of active bandwidth allocation for passive optical network system In a GPON system conforming to ITU-T Recommendations G.984.3, an optical line terminal is provided which has an active bandwidth allocation function that preferentially puts small bandwidth signals in a particular segment of a frame, e.g., at a head of the frame, to... | 05/22/2012 |
| 8175458 | Optical ring networks having node-to-node optical communication channels for carrying data traffic Techniques, apparatus and systems for optical communications, including fiber ring networks with protection switching to maintain optical communications when an optical failure occurs and to automatically revert to normal operation when the optical failure is correc... | 05/08/2012 |
| 8116628 | Wavelength-division multiplexed passive optical network for embodying wavelength-independent operation of wavelength-locked Fabry-Perot laser diodes by injecting a low noise broadband light source The present invention relates to a wavelength-division multiplexed passive optical network (WDM-PON) which embodies wavelength-independence of wavelength-locked Fabry Perot-Laser Diode (F-P LD). A WDM-PON of the present invention comprises an optical fiber being use... | 02/14/2012 |
| 8098990 | System and method for providing wireless over a passive optical network (PON) A network system and method include a wireless base station integrated at a central office of a service provider. The wireless base station is configured to provide portable and fixed services to customers. A passive optical network is coupled to the wireless base s... | 01/17/2012 |
| 8086104 | System, method and computer readable medium for providing dual rate transmission on a gigabit passive optical network In a dual rate gigabit passive optical network, an optical line termination (OLT) transmits a first rate (GPON) message frame interleaved with a second rate (NGPON) message frame. An unused ATM partition of the GPON message frame is provided with a header and payloa... | 12/27/2011 |
| 8078056 | Multimedia distribution system using fiber optic lines Generating oscillator signals with which selected signals may be mixed. Such oscillator signals may be generated by dividing a pilot tone, such as a 120 MHz pilot tone found on many cable TV systems. Oscillator signals for demodulating received selected signals may ... | 12/13/2011 |
| 8050562 | Apparatus for implementing electro-optical CATV network and signal processing method used by the apparatus Provided is an apparatus for implementing an electro-optical cable distribution network in which a coaxial cable is replaced with an optical cable in order to provide a service integrating broadcast data and communication data by solving a frequency constraint probl... | 11/01/2011 |
| 8023824 | Wavelength division multiplexed passive optical network Data is transmitted between a central office and customer premises by a wavelength division multiplex passive optical network. Two laser beams with separate wavelengths are transmitted from the central office to an optical network unit in the customer premises. Both... | 09/20/2011 |
| 8023823 | System and method for transmitting upstream traffic in an optical network In accordance with the teachings of the present invention, a system and method for transmitting upstream traffic in an optical network is provided. In a particular embodiment, the method includes transmitting upstream traffic at a first wavelength from a first downs... | 09/20/2011 |
| 8019221 | Systems and methods for broadband transmission of signals Systems and methods which facilitate broadband transmission of signals using a delivery point tuning technique to provide a extended frequency passive optical network (EF-PON) are shown. Embodiments provide an extended frequency optical transition node (EF-OTN) at e... | 09/13/2011 |
| 8014674 | Method for operating pon user terminal and a pon user terminal A method for operating PON (passive optical network) user terminal and a PON user terminal equipment, when there is only few data service request in the PON, the PON user terminal operates in power saving manner which maintains low speed connection, the method compr... | 09/06/2011 |
| 8014675 | Passive optical network communication method and system A passive optical network communication system transmits an optical time-division multiplexed signal from a central office through a passive optical coupler to a number of subscribers, and transmits optical encoded signals from the subscribers through the passive op... | 09/06/2011 |
| 8005363 | Passive optical network with wavelength division multiplexing In one embodiment, a passive optical network is provided that includes: an optical line terminal (OLT) configured to transmit a plurality of downstream signals into a corresponding plurality of passive optical networks and to receive a corresponding plurality of ups... | 08/23/2011 |
| 8000602 | Methods and devices for reducing power consumption in a passive optical network while maintaining service continuity The present invention discloses methods for reducing power consumption in a PON while maintaining service continuity, the method including the steps of: providing an OLT operationally connected to at least one ONU; triggering a sleep request for at least one request... | 08/16/2011 |
| 7995920 | Optical network terminal power failure management Optical network terminal (ONT) power failure management. A system for permitting a customer of a telecommunication company, for whom fiber to the premises (FTTP) has been installed, to control operating features associated with operation of a battery backup unit (BB... | 08/09/2011 |
| 7986880 | Method and system for providing a return path for signals generated by legacy terminals in an optical network A return path system includes inserting RF packets between regular upstream data packets, where the data packets are generated by communication devices such as a computer or internet telephone. The RF packets can be derived from analog RF signals that are produced b... | 07/26/2011 |
| 7978976 | Optical data transmission system An optical data transmission system having a hub, an optical router, and a plurality of optically pumped sources at a curb location, and a plurality of optical network units (ONUs). The ONUs generate and transmit respective data modulated pumping light to the curb l... | 07/12/2011 |
| 7978977 | Frontend baseband digital reverse for a cable modem termination system The present invention is directed towards monitoring and adjusting a power level of reverse subcarrier signals at an input of an optical node as opposed to at an input of a CMTS blade. Advantageously, reverse subcarrier signals are digitally transmitted throughout t... | 07/12/2011 |
| 7974532 | System and method for bandwidth management in ethernet-based fiber optic TDMA networks A system and method for management of bandwidth in a fiber optic, ethernet-based, TDMA communications system. A request/grant process is used to control the use of upstream bandwidth. A sense of time must therefore be shared by a headend and remote end-user devices.... | 07/05/2011 |
| 7953325 | System and method for communicating optical signals between a data service provider and subscribers An optical fiber network can include an outdoor laser transceiver node that can be positioned in close proximity to the subscribers of an optical fiber network. The outdoor laser transceiver node does not require active cooling and heating devices that control the t... | 05/31/2011 |
| 7945163 | Station-side apparatus of wavelength multiplexing PON system, wavelength and network address allotting method and program thereof To achieve a station-side apparatus of a wavelength multiplexing PON system, which is capable of saving the wavelength resource through automatically carrying out allotment of the wavelength and the network address to reduce the complicated work for the setting, and... | 05/17/2011 |
| 7925164 | Method and system for power management control in passive optical networks An optical line terminal (OLT) performs power management control in a passive optical network (PON) by acquiring a respective reception level for each optical network unit (ONU) in the PON and maintaining a reception table that stores the respective reception level ... | 04/12/2011 |
| 7920792 | System and method for managing communication in a hybrid passive optical network In accordance with the teachings of the present invention, a system and method for managing communication in a hybrid passive optical network (HPON) is provided. In a particular embodiment, the method includes transmitting, at a first wavelength, a first configurati... | 04/05/2011 |
| 7917032 | Multi-bit-rate optical communication method, optical network unit, and optical line terminal The present invention relates to a multi-bit-rate optical communication method, optical network units, and an optical line terminal that enable multi-bit-rate transmission of low bit-rate data and high bit-rate data while maintaining compatibility with existing syst... | 03/29/2011 |
| 7912372 | Optical access network using wavelength-locked WDM optical source injected by incoherent light The present invention relates to a passive optical network, which inexpensively improves the spectral efficiency of an access network and is capable of increasing the number of subscribers per channel by using WDM in combination with Time Division Multiplexing (TDM)... | 03/22/2011 |
| 7889990 | Optical line terminal capable of active bandwidth allocation for passive optical network system In a GPON system conforming to ITU-T Recommendations G.984.3, an optical line terminal is provided which has an active bandwidth allocation function that preferentially puts small bandwidth signals in a particular segment of a frame, e.g., at a head of the frame, to... | 02/15/2011 |
| 7885543 | High performance gigabit passive optical network A device determines a bandwidth demand for traffic provided between a line terminal (LT) and multiple optical network terminals (ONTs), and dynamically tunes, based on the determined bandwidth demand, one or more tunable filters provided in the LT and the multiple O... | 02/08/2011 |
| 7877014 | Method and system for providing a return path for signals generated by legacy video service terminals in an optical network A return path system includes inserting RF packets between regular upstream data packets, where the data packets are generated by communication devices such as a computer or internet telephone. The RF packets can be derived from analog RF signals that are produced b... | 01/25/2011 |
| 7865081 | Fiber access architecture capable of being seamlessly upgraded Disclosed is an architecture enabling premium services to be provided over fiber to high-end users/customers. This architecture has a plurality of nodes and a passive optical device inserted prior to one of the nodes. The optical device allows wavelengths provisione... | 01/04/2011 |
| 7848653 | Method and device for transmitting low rate signals over an optical transport network Embodiments of the present invention provide a method for transmitting low rate signals over an optical transport network, including: adapting the low rate signals into low rate optical channel data units of the same rate level with the low rate signals; asynchronou... | 12/07/2010 |
| 7848652 | Wavelength division multiplexing passive optical network system and method of generating optical source A wavelength division multiplexing passive optical network system is provided. A central office generates a multi-mode light having a mode interval equal to a period interval of a multiplexing filter of the remote node and the multi-mode light is used to control a w... | 12/07/2010 |
| 7840137 | Optical line terminal and optical network unit capable of alarm transmission scheme for passive optical network system A station-side apparatus adapted for use in a passive optical network (PON) system is disclosed, which remotely collects inside information of optical network terminals (ONTs) even before completion of start-up of an optical network unit (ONU), permits an obstructio... | 11/23/2010 |
| 7831147 | Fiber and wire communication system This invention provides a new architecture for a communication system between head-ends and end-users which expands bandwidth and reliability of the communication system. A mux-node receives communication signals from a head-end and forwards the received communicati... | 11/09/2010 |
| 7796888 | Secure upstream transmission in passive optical networks A method and system for ensuring confidentiality of signal transmission in a point-to-multipoint data transmission network like Ethernet passive optical network, including at least one hub, at least one transmission medium and at least one station connected to the h... | 09/14/2010 |
| 7783196 | Fiber and wire communication system This invention provides a new architecture for a communication system between head-ends and end-users which expands bandwidth and reliability of the communication system. A mux-node receives communication signals from a head-end and forwards the received communicati... | 08/24/2010 |
| 7778546 | Point-to-multipoint high data rate delivery systems from optical node in HFC systems over existing and advanced coaxial network Methods and apparatus are described for transmitting and receiving data. A method includes a process of transferring data over a coaxial network at a bandwidth above 1000 MHz, wherein the process of transferring data transfers the data between an optical node and a ... | 08/17/2010 |
| 7773880 | Optical access system An optical access system capable of avoiding cutoffs or interruption in the periodically transmitted signals that occur during the ranging time is provided. A first method to avoid signal cutoffs is to stop periodic transmit signals at the transmitter during the ran... | 08/10/2010 |
| 7751711 | Optical network terminal power failure management Optical network terminal (ONT) power failure management. A system for permitting a customer of a telecommunication company, for whom fiber to the premises (FTTP) has been installed, to control operating features associated with operation of a battery backup unit (BB... | 07/06/2010 |
| 7751712 | Passive optical network and data communication method thereof A Passive Optical Network includes: an Optical Line Terminal, an Optical Distribution Network, and an Optical Network Unit or an Optical Network Terminal, wherein the Optical Line Terminal is adapted to exchange data with the Optical Network Unit or the Optical Netw... | 07/06/2010 |
| 7734179 | Fiber/wired communication system A communication system between head-ends and end-users is provided which expands bandwidth and reliability. A concentrator receives communication signals from a head-end and forwards the received communication signals to one or more fiber nodes and/or one or more mi... | 06/08/2010 |
